Canbus nissan qashqai - MTCD Android Head Units Q&A

Good morning, I ask if anyone is able to visualize data from canbus such as open doors, air conditioning, etc. I have never seen them on my Dasaita (with Nissan Qashqai 2018 car). I know that the program responsible for these displays is the HCTCanbus.apk, it is present in my rom (hal9k) but I don't see anything, apart from when I open the doors and the image of the open door appears. All other data does not appear.

mrgiaco01 said:
Good morning, I ask if anyone is able to visualize data from canbus such as open doors, air conditioning, etc. I have never seen them on my Dasaita (with Nissan Qashqai 2018 car). I know that the program responsible for these displays is the HCTCanbus.apk, it is present in my rom (hal9k) but I don't see anything, apart from when I open the doors and the image of the open door appears. All other data does not appear.
Click to expand...
Click to collapse
I've had different units since 2016 and I have never seen anything else than door warnings. I'll guess they have never implemented the rest of the CAN-bus info.

Related

MTCD KGL PX5 - CanBus problem with VW Golf 6

Hi i've two problem with CanBus on Vw Golf 6.
1. If i open APP for steering weel config i can't see any button and i can't configure anything
2. Doors open/close don't work. I can see Temperature, Oil, RPM but doors doesn't work at all
I've this problem with my actual PX5 KGL and with my old RK3188 unit
Details of my actual unit:
Type KGL
MCU 2.47
ROM Malaysk PX5 2.0
capu81 said:
Hi i've two problem with CanBus on Vw Golf 6.
1. If i open APP for steering weel config i can't see any button and i can't configure anything
2. Doors open/close don't work. I can see Temperature, Oil, RPM but doors doesn't work at all
I've this problem with my actual PX5 KGL and with my old RK3188 unit
Details of my actual unit:
Type KGL
MCU 2.47
ROM Malaysk PX5 2.0
Click to expand...
Click to collapse
1) car specific headunits which Steering wheel buttons control are based on Canbus Box CAN NOT BE MAPPED by the Steering Wheel APP. They are hardcoded to specific Headunit functions. There is a tool MTCDTools from @f1x that could help you to assign new functionalities to your SWC buttons.
2) I don't know why do you report it as a problem. It was promised to you that Doors Opening/Closing shall be working with the canbus box supplied? Each Can-Bus Box is capable to decode specific features of the car. If that functionality was not present on PX3 or PX5 is due to your can-bus CAN'T DECODE (or has not been programmed to decode) the open/close door system.
The CarSettings app just receive which functions are being decoded by your can-bus and show the decoded information received.
Can you point me to the location of the CarSettings app? I can't find it in my newly installed headunit. I couldn't find any in the Google play store.
I found a fix for you problem, capu81, you need to go to factory settings, Canbus and try to change the can bus setting with some other value. The can bus box has the ability to decode some dozen car types, and it's probably not set for your car properly. When this setting is done right the apps that everyone is looking for, the Car info and Car settings are going to be available and should contain all the old settings that were available on your factory head unit. The default password for accessing factory settings is usually 126.
And if the canbus decoder is not supporting your vw golf 6, then go to roadnavi and buy their CAN-bus Decoder and select the right model. Eg: RN Model: C257 Golf 7
Thank you to all for the answer.
The doors signal is not a big problem, l leave it in this way.
Steering Well remapping: with MTCD Tools i can create custom action. For example: i've button for MUTE. If i remap button with MTCD Tools and assign Vocal Google Search to it the action is fine but MTCD became MUTE. There is a way to disable factory action and use only MTCD Action?
I have this problem too (no mapping option) but my steering wheel works on my Ford Focus. Check your CAN Bus box and make sure the model of it matches what's selected in Factory Settings. My CAN Bus box is a Raise 06, likewise it is selected in Factory Settings to match it.
@capu81 I am having this same issue with my doors on my Erisin ES6405V. Currently emailing with Erisin back and forth trying to get this fixed. If there is ever an outcome, I will let you know.
capu81 said:
Thank you to all for the answer.
The doors signal is not a big problem, l leave it in this way.
Steering Well remapping: with MTCD Tools i can create custom action. For example: i've button for MUTE. If i remap button with MTCD Tools and assign Vocal Google Search to it the action is fine but MTCD became MUTE. There is a way to disable factory action and use only MTCD Action?
Click to expand...
Click to collapse
I have same exact issue. Did you find a solution to it?
Hello, I have the exact same problem only the other way around, my steering wheel buttons are mapped and working, car is showing open/closed doors but for oil, rpm, speed battery nothing. I tryed messing with the canbus setup and change to other setting from VWto maybe get it to work but no luck. Any ideas on how I can solve this? I have a MTCD unit px3 2GB 7.1.2
I have also problem with CANBus decoder. The only problem is that when i drive and change shift activate rearview camera, all the other stuff (swc, door signals and also reverse enable the rear view camera) works fine. There is something like update or a settings that works fine. I have a FIAT Bravo model >2007 and in factory settings seems to be all ok
dirty_dty said:
Hello, I have the exact same problem only the other way around, my steering wheel buttons are mapped and working, car is showing open/closed doors but for oil, rpm, speed battery nothing. I tryed messing with the canbus setup and change to other setting from VWto maybe get it to work but no luck. Any ideas on how I can solve this? I have a MTCD unit px3 2GB 7.1.2
Click to expand...
Click to collapse
j0nnymoe said:
@capu81 I am having this same issue with my doors on my Erisin ES6405V. Currently emailing with Erisin back and forth trying to get this fixed. If there is ever an outcome, I will let you know.
Click to expand...
Click to collapse
These are not "problems" - CAN Bus support depends on your car model, the manufacturer of the CAN Bus box and whether MTC/HCT have written the software for these things. If youve played araound with all the CAN Bus settings and not every function works then there is nothing you can do . . . apart from get hold of the CAN Bus protocol for your vehicle,, the MTCD MCU protocl and then write and app for it. There are 1000s and 1000s of cars on the market (and 1000s no longer made) it would be far too costly to make full CAN Bus support for EVERY car on sale, so only the most popular cars are supported and even then not all models and/or all functionality.
@j0nnymoe - dont waste your time contacting Erisin, they are a seller not a manufacturer and theres nothing they will be able to do.
@typos1 do you think maybe it can be fixed if I update the MCU to the latest version? It just seam strage for it to work in open/closed doors but not for the rest, I'm thinking maybe a mismatch of canbus and software and maybe that is why it dose not work. (Just a wild guess)
dirty_dty said:
@typos1 do you think maybe it can be fixed if I update the MCU to the latest version? It just seam strage for it to work in open/closed doors but not for the rest, I'm thinking maybe a mismatch of canbus and software and maybe that is why it dose not work. (Just a wild guess)
Click to expand...
Click to collapse
Updating the MCU may certainly help.
@typos1 that is good to know, I can keep my hopes high for a bit longer but I am sceptic about the MCU update [email protected] gave me.. He did not test it and there is nobody else I could find that updated to the latest version of XRC to confirm it is the right one.
dirty_dty said:
@typos1 that is good to know, I can keep my hopes high for a bit longer but I am sceptic about the MCU update [email protected] gave me.. He did not test it and there is nobody else I could find that updated to the latest version of XRC to confirm it is the right one.
Click to expand...
Click to collapse
What do you mean "the right one" ?
If you remember on the other thread, he just attached a dmcu file of the latest MCU for my XRC unit and said he did not tested it.
dirty_dty said:
If you remember on the other thread, he just attached a dmcu file of the latest MCU for my XRC unit and said he did not tested it.
Click to expand...
Click to collapse
I cant see any reason to doubt him.
@j0nnymoe - dont waste your time contacting Erisin, they are a seller not a manufacturer and theres nothing they will be able to do.
Yea I gave up on that a while ago. I've had a couple of these units before from other sellers (xtrons/eonon) and the canbus on those units worked fine. I suspect the KGL unit's doesn't like my car for some reason. I toyed with the idea of getting another canbus decoder..maybe if I can get one cheap enough I might try it.
j0nnymoe said:
@j0nnymoe - dont waste your time contacting Erisin, they are a seller not a manufacturer and theres nothing they will be able to do.
Yea I gave up on that a while ago. I've had a couple of these units before from other sellers (xtrons/eonon) and the canbus on those units worked fine. I suspect the KGL unit's doesn't like my car for some reason. I toyed with the idea of getting another canbus decoder..maybe if I can get one cheap enough I might try it.
Click to expand...
Click to collapse
Did you try another canbus decoder?
I've got an a3 and I'm using a kgl unit and nothing shows on my dis screen on the dash but when I've had a unit from xtrons before that did work.. I'm guessing kgl must use cheaper canbus decoders and I've been thinking like you and we're thinking of buying another decoder from xtrons to try

(resolved) Seicane unit keeps rebooting/powering off

*******Edit: I was able to resolve most of the issues I've been experiencing with my Android Unit. *******
Incorrect Time- I needed to update my firmware, as suggested by users in the forum. The seller was able to send me an updated version at the time.
SWC- My resolution mentioned down below. I may change it back to CAN key and see if the CANBUS connection issue I had was the real culprit.
Random Power cycling- User error. I didn't realize I didn't plug the power cable completely into the unit.
A/C Display- I have @brettf to thank for this. I initially switched cables like he mentioned below, but found they didn't work THE FIRST TIME I did this, so I switched the cables back to their original [incorrect] positions. The second time around, ie. yesterday, I decided to try it again, but this time, I took into account my CANBUS settings. I changed the CANBUS controls to the last ACCORD_7(Chan........) setting and it finally worked for my system. So, now I understand what most users have been talking about in regards to the temperature only being in Celsius. If there's a fix for this that I may have missed, I'd highly appreciate it.
GPS signal- Lol unintentional user error this time, without realizing I even made a mistake. My unit wasn't labeled with which SMA connector was which for the GPS antenna or Bluetooth antenna, so I had accidentally switched them around during my initial installation. I decided to actually take a look at the diagram on AliBaba's seller page and lo and behold, they were indeed switched around. Previously, it would take over 5 minutes for a signal to be fixed and there was no guarantee it would be stable even on a clear day, but after the switch, the GPS signal is strong and fixes immediately to a signal now.
Bluetooth - Even though I'm not an audiophile, the music played from A2DP sounds even better following the aforementioned sma switch around. Tbh, I'm not tech savvy enough to understand how either the GPS or bluetooth have been working at all after all this time since my initial installation, but it works like it's supposed to now.
Mic- I ordered another external mic, so whenever it comes in, I'll try to update and see if there are any improvements with the quality, as I've realized my old mic sounded "distant" before when it was connected to my iSimple device.
Initial issue mentioned below:
Hello. I recently purchased this Seicane unit:
[Alibaba (**dot**) com/product/62132856562/10-1-Inch-Android-9-0.html?tracelog=null
I've been having the usual issues that I kind of anticipated with these Chinese head units *(ie. time was not set correctly when I initially installed it but I was able to fix it with an update, steering wheel controls no longer work(fixed), climate settings I press on the unit do not display on the screen but the A/C still works (fixed), just to name a few examples). But one problem I didn't anticipate was, my unit continuously reboots/powers off after I turn on the car and/or the screen may not come on unless I turn the ignition on and off again (fixed). With that being said, the Bluetooth cuts in and out as well and microphone quality is subpar at best, even after using an external mic from a previous isimple unit used with my original navigation unit.
So far, I honestly like this Seicane unit and I don't have buyer's remorse, but these little annoyances are starting to add up. Is there anyway I can fix these issues, especially the annoying rebooting? Thank you.
I recorded what I'm talking about earlier after work today:
youtu (**dot**) be/VvQnOBJGmWM
Anything at all?
chewybits95 said:
Anything at all?
Click to expand...
Click to collapse
Have you tried returning it, or lodging a dispute with the reseller?
marchnz said:
Have you tried returning it, or lodging a dispute with the reseller?
Click to expand...
Click to collapse
I didn't want to go that route yet until I troubleshoot it myself. Plus, shipping to China is expensive, so that'll be my last ditch solution if I'm not able to figure out these menial issues.
Others here have experienced these problems you should be able to find their threads. From what I've read before the rebooting was linked to the HU losing internet access but those were units with a SIM card port. Setting airplane mode helped when they had no SIM and/or were connected to the phone hotspot. But if there's a problem with a SIM in relocating the antennas was needed otherwise the unit needs repair.
For the HVAC display you need a CANbus decoder specific to your car. It's not unusual for a seller to not include it unless you told them you need it. You have to be very literal and specific with them. One guy received the wrong one and only fixed it by convincing another seller (Dasaita) to sell him one. In your case it worked before and no more after the update then you may need to try different settings in the CANbus menu. Did you get your update from Seicane? If not you should ask them for one.
nic2k said:
...
For the HVAC display you need a CANbus decoder specific to your car. It's not unusual for a seller to not include it unless you told them you need it. You have to be very literal and specific with them. One guy received the wrong one and only fixed it by convincing another seller (Dasaita) to sell him one. In your case it worked before and no more after the update then you may need to try different settings in the CANbus menu. Did you get your update from Seicane? If not you should ask them for one.
Click to expand...
Click to collapse
I don't think this is the case here. I have the same unit as OP.
Check this thread regarding the Climate Control display issue: https://forum.xda-developers.com/an...1-android-8-2003-accord-t3923783/post79786553
brettf said:
I don't think this is the case here. I have the same unit as OP.
Check this thread regarding the Climate Control display issue: https://forum.xda-developers.com/an...1-android-8-2003-accord-t3923783/post79786553
Click to expand...
Click to collapse
How would I go about actually changing the wires around though? Do I just pull them out of the harness? Lol, I'm not an electrician, so I would prefer not to break the unit.
I may have figured out the rebooting issue: when I went back to finally check the back of the unit, I found the power cable with the blue harness wasn't completely connected to the unit. Whoops, lol!
I'll test it out whenever I drive my accord again and see if this definitely fixed the rebooting issue.
chewybits95 said:
How would I go about actually changing the wires around though? Do I just pull them out of the harness? Lol, I'm not an electrician, so I would prefer not to break the unit.
Click to expand...
Click to collapse
Just pop them out of the connector. There's a little tab on the metal bit inside the connector. If you press it and pull the wire softly, it will pop out.
brettf said:
Just pop them out of the connector. There's a little tab on the metal bit inside the connector. If you press it and pull the wire softly, it will pop out.
Click to expand...
Click to collapse
I was able to pop them out like you mentioned, but no changes. Luckily the a/c still works, so I guess I'll just leave it as is for now... Thank you for the guidance.
Follow up- so I was able to diagnose and fix the majority of the issues I listed thanks to you guys.
In terms of the steering wheel controls, Seicane's engineers failed to switch the steering wheel control settings in the factory settings to "SWC keys" before shipping it out. I found this setting only after attempting to install a universal SWC remote myself, so now I was able to retain both my original controls and the newly installed remote, which is a nice addition now. If you guys ever have issues with the car's original SWC settings when installing your unit, check your settings by going to:
CAR (Driving, navigation some settings) -> Factory Settings (passcode 126) -> Other -> Steering wheel keys assign -> ***Switch to SWC Keys if it's set to Can key***
Note- I'm not sure if the settings will differ per android software, but my unit is Android 9.0
chewybits95 said:
I was able to pop them out like you mentioned, but no changes. Luckily the a/c still works, so I guess I'll just leave it as is for now... Thank you for the guidance.
Click to expand...
Click to collapse
You should also make sure your car profile is "116 Accord 7" under factory settings - canbus
chewybits95 said:
*******Edit: I was able to resolve most of the issues I've been experiencing with my Android Unit. *******
Incorrect Time- I needed to update my firmware, as suggested by users in the forum. The seller was able to send me an updated version at the time.
SWC- My resolution mentioned down below. I may change it back to CAN key and see if the CANBUS connection issue I had was the real culprit.
Random Power cycling- User error. I didn't realize I didn't plug the power cable completely into the unit.
A/C Display- I have @brettf to thank for this. I initially switched cables like he mentioned below, but found they didn't work THE FIRST TIME I did this, so I switched the cables back to their original [incorrect] positions. The second time around, ie. yesterday, I decided to try it again, but this time, I took into account my CANBUS settings. I changed the CANBUS controls to the last ACCORD_7(Chan........) setting and it finally worked for my system. So, now I understand what most users have been talking about in regards to the temperature only being in Celsius. If there's a fix for this that I may have missed, I'd highly appreciate it.
GPS signal- Lol unintentional user error this time, without realizing I even made a mistake. My unit wasn't labeled with which SMA connector was which for the GPS antenna or Bluetooth antenna, so I had accidentally switched them around during my initial installation. I decided to actually take a look at the diagram on AliBaba's seller page and lo and behold, they were indeed switched around. Previously, it would take over 5 minutes for a signal to be fixed and there was no guarantee it would be stable even on a clear day, but after the switch, the GPS signal is strong and fixes immediately to a signal now.
Bluetooth - Even though I'm not an audiophile, the music played from A2DP sounds even better following the aforementioned sma switch around. Tbh, I'm not tech savvy enough to understand how either the GPS or bluetooth have been working at all after all this time since my initial installation, but it works like it's supposed to now.
Mic- I ordered another external mic, so whenever it comes in, I'll try to update and see if there are any improvements with the quality, as I've realized my old mic sounded "distant" before when it was connected to my iSimple device.
Initial issue mentioned below:
Hello. I recently purchased this Seicane unit:
[Alibaba (**dot**) com/product/62132856562/10-1-Inch-Android-9-0.html?tracelog=null
I've been having the usual issues that I kind of anticipated with these Chinese head units *(ie. time was not set correctly when I initially installed it but I was able to fix it with an update, steering wheel controls no longer work(fixed), climate settings I press on the unit do not display on the screen but the A/C still works (fixed), just to name a few examples). But one problem I didn't anticipate was, my unit continuously reboots/powers off after I turn on the car and/or the screen may not come on unless I turn the ignition on and off again (fixed). With that being said, the Bluetooth cuts in and out as well and microphone quality is subpar at best, even after using an external mic from a previous isimple unit used with my original navigation unit.
So far, I honestly like this Seicane unit and I don't have buyer's remorse, but these little annoyances are starting to add up. Is there anyway I can fix these issues, especially the annoying rebooting? Thank you.
I recorded what I'm talking about earlier after work today:
youtu (**dot**) be/VvQnOBJGmWM
Click to expand...
Click to collapse
Glad I could help!
chewybits95 said:
Follow up- so I was able to diagnose and fix the majority of the issues I listed thanks to you guys.
In terms of the steering wheel controls, Seicane's engineers failed to switch the steering wheel control settings in the factory settings to "SWC keys" before shipping it out. I found this setting only after attempting to install a universal SWC remote myself, so now I was able to retain both my original controls and the newly installed remote, which is a nice addition now. If you guys ever have issues with the car's original SWC settings when installing your unit, check your settings by going to:
CAR (Driving, navigation some settings) -> Factory Settings (passcode 126) -> Other -> Steering wheel keys assign -> ***Switch to SWC Keys if it's set to Can key***
Note- I'm not sure if the settings will differ per android software, but my unit is Android 9.0
Click to expand...
Click to collapse
IF i switch to SWC Key, i cant assign the keys anymore
Solutions?
EGOiST1991 said:
IF i switch to SWC Key, i cant assign the keys anymore
Solutions?
Click to expand...
Click to collapse
Switch it back to Can Key and see if it you assign the key configurations.
SWC worked before I figured out the two CANBUS wires needed to be switched around but I don't feel the need to test if this will work in my car, so see if that may help.
Sent from my LM-V350 using Tapatalk
CanBus works fine. Every Function works on the 78 Protokoll. Only the Steering Wheel buttons get a "double Input" but i only press once.
And if i switch to protokoll 46 the Steering Wheel Button works perfect but everything else from canbus does not work (Settings for the car)
chewybits95 said:
*******Edit: I was able to resolve most of the issues I've been experiencing with my Android Unit. *******
Incorrect Time- I needed to update my firmware, as suggested by users in the forum. The seller was able to send me an updated version at the time.
SWC- My resolution mentioned down below. I may change it back to CAN key and see if the CANBUS connection issue I had was the real culprit.
Random Power cycling- User error. I didn't realize I didn't plug the power cable completely into the unit.
A/C Display- I have @brettf to thank for this. I initially switched cables like he mentioned below, but found they didn't work THE FIRST TIME I did this, so I switched the cables back to their original [incorrect] positions. The second time around, ie. yesterday, I decided to try it again, but this time, I took into account my CANBUS settings. I changed the CANBUS controls to the last ACCORD_7(Chan........) setting and it finally worked for my system. So, now I understand what most users have been talking about in regards to the temperature only being in Celsius. If there's a fix for this that I may have missed, I'd highly appreciate it.
GPS signal- Lol unintentional user error this time, without realizing I even made a mistake. My unit wasn't labeled with which SMA connector was which for the GPS antenna or Bluetooth antenna, so I had accidentally switched them around during my initial installation. I decided to actually take a look at the diagram on AliBaba's seller page and lo and behold, they were indeed switched around. Previously, it would take over 5 minutes for a signal to be fixed and there was no guarantee it would be stable even on a clear day, but after the switch, the GPS signal is strong and fixes immediately to a signal now.
Bluetooth - Even though I'm not an audiophile, the music played from A2DP sounds even better following the aforementioned sma switch around. Tbh, I'm not tech savvy enough to understand how either the GPS or bluetooth have been working at all after all this time since my initial installation, but it works like it's supposed to now.
Mic- I ordered another external mic, so whenever it comes in, I'll try to update and see if there are any improvements with the quality, as I've realized my old mic sounded "distant" before when it was connected to my iSimple device.
Initial issue mentioned below:
Hello. I recently purchased this Seicane unit:
[Alibaba (**dot**) com/product/62132856562/10-1-Inch-Android-9-0.html?tracelog=null
I've been having the usual issues that I kind of anticipated with these Chinese head units *(ie. time was not set correctly when I initially installed it but I was able to fix it with an update, steering wheel controls no longer work(fixed), climate settings I press on the unit do not display on the screen but the A/C still works (fixed), just to name a few examples). But one problem I didn't anticipate was, my unit continuously reboots/powers off after I turn on the car and/or the screen may not come on unless I turn the ignition on and off again (fixed). With that being said, the Bluetooth cuts in and out as well and microphone quality is subpar at best, even after using an external mic from a previous isimple unit used with my original navigation unit.
So far, I honestly like this Seicane unit and I don't have buyer's remorse, but these little annoyances are starting to add up. Is there anyway I can fix these issues, especially the annoying rebooting? Thank you.
I recorded what I'm talking about earlier after work today:
youtu (**dot**) be/VvQnOBJGmWM
Click to expand...
Click to collapse
The chassis was touching bare wires for random **** I didn't have so it kept resetting. Took me an hour to figure it out. You don't need to spend money just get some tape and make sure all the wires are connected or covered
Ahardyg93 said:
The chassis was touching bare wires for random **** I didn't have so it kept resetting. Took me an hour to figure it out. You don't need to spend money just get some tape and make sure all the wires are connected or covered
Click to expand...
Click to collapse
Lol 420 tho I was smoking too
hello friends, I was wondering if you can help me, my CANbus looks like its working and the steering wheel works too, however, the stereo reboots every 3-4 minutes... the thing is that if I connect something it gets frozen, and a couple of seconds it reboots, if I open an app it gets frozen, if I click on any button of the stereo it will work one or three times but then it gets frozen and reboots it again, I'm not able to listen to anything because the stereo reboots all the time many times... I tried with android 9 same error I updated to android 10 still the error, please can you help me with some ideas, I really believe it is a hardware issue and not software. regards

Steering Wheels buttons problem

Hi there:
Car is 2016 Nissan Qashqai J11 TS. I have installed a Wanqi HU Android 8 and after installing my steering wheels buttons stopped working. I changed the Canbus protocol to Xtrail/Qashqai but still unable to make the buttons working. Can anyone recommends me a way to solve this problem?
Best Regards
You should talk to the seller and have him confirm if the canbus is the one that corresponds to your Nissan model...
upload a photo with the code of the can bus, maybe some Nissan user can confirm whether it is correct or not, and in turn that protocol has worked well.
Try this:
https://www.youtube.com/watch?v=jM-VKUhaGUs
If it doesn't work, then probably you have something with can bus reading.

For W211/203 owners with Headunits - I've ported MBUX with full CAN data to android!

This has been a little lockdown project for myself.
DISCLAIMER: I am not responsible for ANY distractions caused by the shiny new interface, or any bricking of peoples tablets caused by flashing a custom ROM!
For those who don't know, MBUX is the new UI design language that Mercedes uses in the W205 models and up.
I decided to have a go at porting the interface to my MTCE tablet, using assets pulled from reverse engineered cluster firmware for the W213 E class.
Currently, this application works as a new home launcher, being the exclusive application running on the device. There is no way to browse other applications currently (I need to integrate that into the interface), however, it decodes data from CANBUS, and displays a TON of information!
Limitations currently (Early developement)
1. Volume controls and brightness doesn't work. We are bypassing the stock headunit canbus decoder box! (Reasons below)
2. The app will crash on first launch due to USB permissions
Current data shown on interface
1. Fuel data (Consumption per second, Average + Current MPG)
2. Transmission status for 722.x transmissions - Gears, oil temp, Torque converter status and more
3. Climatronics data (Get to see interior and exterior temps, as well as current fan speed, AC work load, Refrigerant pressure, flap statuses)
Future additions
1. Sending track data to Instrument cluster display - full name supported, as well as play duration
2. Phone support on IC display (Show current caller name, as well as call duration)
3. LOADS more sensor data - I have full access to every module on the cars as well as all the messages on canbus and their containing data!
4. Possible 0-60 lap timer?
5.
Why bypass the stock canbus box?
1. The stock decoder box with headunits spam data to the instrument cluster. I've reverse engineered the cluster protocol in these cars, so i can display a lot more text on the display!
2. The stock decoder box triggers the headunit to force show the reverse screen when the car is in reverse. I want the app to be in control of what happens, not the headunit.
3. The arduino required for this project talks to BOTH Canbus C and B, so no need for the headunits own box (Which i found out was filtering data)
What you'll need to try it
1. Malysk ROM installed (Root is required to run it, and Malysk has WIFI ADB debugging enabled for ease of development!)
2. Arduino Uno with 2x CANBUS shields (We will bypass the Headunits own canbus box for our own!
3. Suitable wires for running the Arduino to the 2 CAN systems on the car (see below)
Installation
1. Connect your Arduino to CANBUS C. I have 2 wires running to behind the instrument cluster. These plug into the 2 green wires on the cluster harness (Green is CAN L, Green+White is CAN H):
2. Connect your Arduino to CANBUS B. I have 2 wires running to the hub connector, accessible by removing the panel on top of the driver's pedals. (Brown is CAN L, Brown+Red is CAN H)
3. Connect your Arduino to a laptop, and upload the code found in UNO_CODE in the code repository
4. Connect the Arduino to the headunit with a USB cable.
5. Compile and upload the APK to the headunit, and choose "MERCEDES UI" as your new home screen.
6. Enjoy!
Code repository: https://github.com/rnd-ash/MBUX-Port
Ha - you the man.
First project Ive come across for my car.
However couple of Qs.
1, what is this project for, just to display car info with MB launcher?
I know this is good but without normal control of headunit apps there's not much point.
Could you not easily achieve the same with torque and a similar launcher thats similar
.
2nd. My px5 has a built in canbus, no way to bypass or disable it. Could it still work with the limitations / further research?
Does this have to be run on malaysk rom. Can it not be run as an app or on Hal9ks?
Anyway fantastic news and well done for having a go. Let me know if I can test anything for you.
203 or 211?
Currently, it's still in early stages! But I've been documenting it all on twitter: https://twitter.com/rndashm/status/1286652539337940992?s=19
You can disable canbus. If your using the factory harness (big black thing with loads of wires going out of it), what I did was to simply tape up the male canbus pins on the headunit, so they don't make contact
And as for using existing canbus. No you have to use a dedicated shield. The MTC headunits seem to filter a ton down by the time the Android OS connects to the MCU controller, so there is hardly anything useful there to see. Not to mention that same onboard MCU controller spams canbus with messages for the instrument cluster display from power on, and can't be turned off. Hence I had to bypass that as well in order to render text on the instrument cluster display (I plan to show track names playing on the AUDIO page and, if you have the telephone page, allow you to dial a contact from there! (Ive done this with a prototype project on my GitHub account called W203-Canbus).
For now, I don't think you can test anything as such but I suggest you get some wires ready for both can B and can C, and buy an Arduino Uno and 2x canbus shields
Great Job !!!
I was desperately looking for CANBUS related info for my use case on a mercedes car (2009 W164) where i receive very limited CANBUS info and found this thread.
Comparing folks with Audi/VW/SKODA where they are able to see pleanty of info (AC, Parking Sensors, door open etc) with my situation on a mercedes vehicle made me mad for not able to have those info available.
Keep up
Thx, Alexis
Thanks!
I'm making a series showing how I'm building the whole interface FYI - you can see all the interface progress as I'm designing the system:
@UKSFM99 how's it going, it's been a while since you posted these... ?

Question NaviFly 7862 steering wheel controls not working

Hi
I have purchased an Android HeadUnit for my Renault Megane 2 (2007) from AliExpress. Every function works except the steering wheel controls. The unit has the UIS7862 CPU @1.8Ghz, 6gb Ram and 128gb storage. I have installed the CanBox correctly and tried many CanBox settings in factory menu, but I cannot get the control app to enter learning mode. Does anyone have any idea? Maybe the built in key map application is at fault (com.syu.steer).
Did you find a solution to your problem yet?
I'm stuck at the exact same scenario, same unit. The support over at AliExpress mention to me to select "XP" for canbox settings. However, my canbus module is by Raise, hence I should be using the "RZC"
Also, my reverse cam doesnt work too.
Pls share your findings. Thank you!
I got the steering wheel keys to work with a custom controller made by an engineer in my country specifically for my car and my HeadUnit. The controller is connected directly to the wheel controls and the "key" wire on my HeadUnit. I had to disassembly the steering wheel base and route the cable around the original one. Now I can map every key to an action in the Key Learning app. For the backup camera, because I used a wireless kit, I couldn't use the "back" camera wire to trigger the HeadUnit to switch to it. The kit came with a receiver which only had power wires and a yellow RCA cable. I wired the receiver's power cables to the ACC power so that the receiver only powers on when the engine is running and I managed to map a button on the steering wheel to switch to the RCA input. Now when I want to use back up camera, I just need to press a button to see the image. The camera's transmitter is wired to the license plate bulb and I managed to fit it in the rear bumper.
This wasn't a "plug and play" experience that the Chinese seller promised, but overall I can say I am pretty happy with the end result. The audio quality is wayyy better than the stock HeadUnit. I didn't know that my stock speakers could get that loud and have so much bass. The DSP chip does it's job wonderfully. Also the radio reception is better than with the stock unit. The Android HeadUnit is fast and snappy. Apps open almost instantly and those 6gb of ram really help. I could compare the overall user experience with my OnePlus 7 phone. The unit also cold boots very quickly. The wifi reception is pretty poor. The unit shows 75% signal when my phone is in the car. It doesn't bother me because I put a Sim card in the unit and the mobile reception is as good as on my phone.
andrei-2200 said:
I got the steering wheel keys to work with a custom controller made by an engineer in my country specifically for my car and my HeadUnit. The controller is connected directly to the wheel controls and the "key" wire on my HeadUnit. I had to disassembly the steering wheel base and route the cable around the original one. Now I can map every key to an action in the Key Learning app. For the backup camera, because I used a wireless kit, I couldn't use the "back" camera wire to trigger the HeadUnit to switch to it. The kit came with a receiver which only had power wires and a yellow RCA cable. I wired the receiver's power cables to the ACC power so that the receiver only powers on when the engine is running and I managed to map a button on the steering wheel to switch to the RCA input. Now when I want to use back up camera, I just need to press a button to see the image. The camera's transmitter is wired to the license plate bulb and I managed to fit it in the rear bumper.
This wasn't a "plug and play" experience that the Chinese seller promised, but overall I can say I am pretty happy with the end result. The audio quality is wayyy better than the stock HeadUnit. I didn't know that my stock speakers could get that loud and have so much bass. The DSP chip does it's job wonderfully. Also the radio reception is better than with the stock unit. The Android HeadUnit is fast and snappy. Apps open almost instantly and those 6gb of ram really help. I could compare the overall user experience with my OnePlus 7 phone. The unit also cold boots very quickly. The wifi reception is pretty poor. The unit shows 75% signal when my phone is in the car. It doesn't bother me because I put a Sim card in the unit and the mobile reception is as good as on my phone.
Click to expand...
Click to collapse
Thank you for explaining your solution. Seems like quite a bit of work.
I managed to get my steering controls working finally. Got the correct canbus setting and corrected a connection.
Now, I'm stull stuck with the reverse cam issue. The +12V does energize when I am in reverse gear - I tested this when I connected my cam to DV-in and cam turns on only when in reverse.
But I just don't understand why the Android won't switch to Cam in during reverse gear.
Will continue to seek help from the manufacturer. Otherwise, it's a great HU as you said. Awesome speed!
MasK said:
Thank you for explaining your solution. Seems like quite a bit of work.
I managed to get my steering controls working finally. Got the correct canbus setting and corrected a connection.
Now, I'm stull stuck with the reverse cam issue. The +12V does energize when I am in reverse gear - I tested this when I connected my cam to DV-in and cam turns on only when in reverse.
But I just don't understand why the Android won't switch to Cam in during reverse gear.
Will continue to seek help from the manufacturer. Otherwise, it's a great HU as you said. Awesome speed!
Click to expand...
Click to collapse
You connected the reverse wire?
Maybe this triggers the camera view of it doesn't work via the canbus.
Well, it does work via canbus, just doesnt switch to cam input automatically. Perhaps its some software settings.
MasK said:
Well, it does work via canbus, just doesnt switch to cam input automatically. Perhaps its some software settings.
Click to expand...
Click to collapse
Not all canbus provide the reverse signal. So maybe you have to provide the reverse signal on the separate input.
TorstenH said:
Not all canbus provide the reverse signal. So maybe you have to provide the reverse signal on the separate input.
Click to expand...
Click to collapse
I feel that the HU knows when I am referring (CANBUS might be working here), because the 12V turns on when Im in reverse. The only issue is the HU doesnt switch to the cam automatically. Looks to me like a SW issue. Still awaiting reply from manufacturer.
Also, I realised my backward/forward buttons are swapped. Why is it I can't re-learn them?
It may not be the same for the Navifly, but on my unit, G5 must get the proper voltage to "detect" the car has been put in reverse. I'm re-using my factory rear view camera and it's a 6.5V camera. However, I had to up the voltage to 8.6V so that G5 go that voltage...then the rear image showed up. I reused the car wiring and that's why I had to do this.
Check the voltage that G5 is getting. With a canbus module, I believe there is a wire from the canbus going to G5. If no voltage, make sure the pins are in properly.
FYI, if you are using a canbus and the steering wheel controls go through the canbus, then I believe that you cannot remap the keys.
The 12 V from the reverse wire are coming from your car (or in some cases from the canbox if the information gets transmitted from car to the box via canbus).
My suggestion is:
There is a separate reverse connection (usually a brown wire) on the head unit which triggers the radio to open the app which shows the image of the reverse cam.
You could even connect ACC or B+ to the reverse connection for testing purposes.
mastrv said:
It may not be the same for the Navifly, but on my unit, G5 must get the proper voltage to "detect" the car has been put in reverse. I'm re-using my factory rear view camera and it's a 6.5V camera. However, I had to up the voltage to 8.6V so that G5 go that voltage...then the rear image showed up. I reused the car wiring and that's why I had to do this.
Check the voltage that G5 is getting. With a canbus module, I believe there is a wire from the canbus going to G5. If no voltage, make sure the pins are in properly.
FYI, if you are using a canbus and the steering wheel controls go through the canbus, then I believe that you cannot remap the keys.
Click to expand...
Click to collapse
Absolutely correct.
Thanks guys, but there is no other brown wire for this.
I have a discussion abt this on this thread too:
Medeke/Navifly 7862
Hi, Recently received above unit for my 2006 RS4. everything is great (much better then the M400 I had before) apart from the radio. It seemed to work for the first 2 days, then worked intermittently and now not at all. I have tried...
forum.xda-developers.com
My "cam12V" wire is from the HU and it turns on when I am in reverse. Does this mean that this signal might be coming from my canbus? If so, is there another input back to the HU to trigger the screen to display the video feed? Only other wires I see are AMP related
Give 12V to pin 2 and check if the app to display the image of the cam will start:
TorstenH said:
Give 12V to pin 2 and check if the app to display the image of the cam will start:
View attachment 5374441
Click to expand...
Click to collapse
Yes! It took me a while to figure this out.. mainly because I'll have to cut the wire (wasn't very confident in that)
and also.. the wires at Pin2 didn't make sense! They were more like Battery12V. I did cut and tested that.
So.. it turns out its a pink wire at pin3!
I realized this as I looked at my old Dasaita wires from the canbus connector. Since canbus is a standard, they should be comparable. That reverse wire went into Pin3.
I'm really surprised that Mekede and Navifly has this pin layout printed in all their listings.. but it's just wrong.
Thanks alot for the help!
That means it works now? I think you had to cut the ACC wire according to the manual because the "ignition on" information is provided by the can box.
TorstenH said:
That means it works now? I think you had to cut the ACC wire according to the manual because the "ignition on" information is provided by the can box.
Click to expand...
Click to collapse
Yes it works now. Check out the images. The Pin2 (red) is probably ACC or batt 12V as there was no power when cut. I then cut the wire opposite it (pin10) in case I was looking at the connector wrongly. That turned out to be the headlight sensor.
After tracing the wire and comparing to my old Daisata, it turns out Pin3 (pink) is the reverse IN.
Excellent. Thanks for the clarification.
That means it makes sense to get the wiring diagram from the old radio of the car and compare it with the description of the new head unit.
In my case I had to completely rewire the harness (just if someone is interested):
Junsun V1 MTK8259 - the adapter battle (Kia Ceed Jd) / OEM camera usage / reference thread
I bought the Junsun V1 head unit but my Kia Ceed JD had a OEM nav unit which isn't directly compatible to Junsun V1. So I re-wired the wiring harness based on the pins description of my original OEM navigation unit. I'm only modifying the wiring...
forum.xda-developers.com
The only thing that I could compare to (between old and new HUs) is the canbus connectors. Rest cannot be compared as they're all different.
Oh well..
Anyways, the current Mekede I have has Radio chip NX6686. My old Dasaita PX5 also has a NX6686. However, the radio reception is absolutely trash in the new one. I dont listen to radio that often (I can resort to streaming radio) but my dad takes the car occasionally and he's already complained about it
Your experience on the harness rewiring is pretty intense!
Update: Turns out my Antenna connector was a tad loose and I had to do a re-connect. The radio reception is all good now
MasK said:
Thank you for explaining your solution. Seems like quite a bit of work.
I managed to get my steering controls working finally. Got the correct canbus setting and corrected a connection.
Now, I'm stull stuck with the reverse cam issue. The +12V does energize when I am in reverse gear - I tested this when I connected my cam to DV-in and cam turns on only when in reverse.
But I just don't understand why the Android won't switch to Cam in during reverse gear.
Will continue to seek help from the manufacturer. Otherwise, it's a great HU as you said. Awesome speed!
Click to expand...
Click to collapse
So you found correct canbus settings and connections .. i cant find anything about you sharing them

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