How do CAN Bus messages make it into the unit?

How do CAN Bus messages make it into the unit? - MTCB Android Head Units Q&A

Hi,
After some reading in the forums here there is isn't much info on how CAN bus messages get into the unit.
My unit (Eonon GA5180F) comes with a GM Canbus decoder which works an decodes the ignition, lights, reverse into hardware signals i.e. all the normal inputs. But other data also makes it into the headunit e.g. steering wheel angle changes the reverse overlay and the doors opening/closing shows up on the display.
Would someone be able to point me to a more detailed description of how the can bus messages get decoded in the unit both hardware (does it go in via Key1 wire?) and software. Interestingly with all of the functions that do work my steering wheel controls don't - so I need to figure it out.
Thanks for any help!
Regards
Glenn

I am also interested in such a thing.
I wonder where the principle works show the climate, open doors....and similar messages that can be displayed on android car unit.
Something like this
FF to 0:55 min
https://www.youtube.com/watch?v=ttZVhiLqAEw

Hi,
In fact, there is a can-BUS decoder box, that is read.written through serial port on Android.

Nova8316 said:
Hi,
In fact, there is a can-BUS decoder box, that is read.written through serial port on Android.
Click to expand...
Click to collapse
Hi,
I recently bought an Erisin ES2507B unit for my car.
I installed it and it works perfectly except an annoying
Issue with the swc. In general it works, but if for example i want to switch between screens in the car's dashboard, using the swc, and if i run the radio or another app that can be controlled with the swc, it also changes the radio station or the cd track. So i change the screen in the dash and the radio station at the same time. Annoying isnt it?
So as a developer i decided to try and "fix" that issue, somehow. The unit came with an external canbus decoder which i installed.
I am trying to find out how the headunit reads/writes to this decoder box.
Is this box a serial to canbus converter?
Is it a canbus to canbus converter, ie changes the car protocol to the HU protocol?
Is it a canbus to analog converter that converts the canbus messages in analog voltage? I think that the KEY1 and KEY2 are voltage inputs? (Not connected in my HU).
So if i am correct and this is a serial to canbus converter, how can i read/write to it?
The carservice app is not what suits in my case.
The ideal thing would be an app that catches the correct canbus messages and triggers the correct actions in the HU and HU transmitting to car dashboard.
Can you provide some info on my questions please?
Thank you in advance

Can Bus decoding
Have a look at this guys work on CANBUS control in a mercedes.
honeysw.com/canproject.php
This mat give you a helping hand to get started or realise that it may be bigger than what you think.
Anthony

Aj240 said:
Have a look at this guys work on CANBUS control in a mercedes.
honeysw.com/canproject.php
This mat give you a helping hand to get started or realise that it may be bigger than what you think.
Anthony
Click to expand...
Click to collapse
Well compared to my everyday job, this is nothing. I have been analysing vehicle canbus protocols the last few years so this is not the hard part for me. The hard part is that i dont know where to start in the head unit. How does it handle the canbus? How can i set the baudrate, the filters, the 11bit or 29bit. There are no clues on that, or at least i havent found any yet. That is why i am asking for help.
My everyday job is the development of ecu tuning tools.

psychegr said:
Well compared to my everyday job, this is nothing. I have been analysing vehicle canbus protocols the last few years so this is not the hard part for me. The hard part is that i dont know where to start in the head unit. How does it handle the canbus? How can i set the baudrate, the filters, the 11bit or 29bit. There are no clues on that, or at least i havent found any yet. That is why i am asking for help.
My everyday job is the development of ecu tuning tools.
Click to expand...
Click to collapse
I can only give some hints. Looking at the lower part of the picture I've uploaded you will see TXD RXD. Which most likely
is the series bus going from the can-bus decoder to the head unit. In my loom for KLD there are two wires going
from the can-bus decoder to the HU. One green, one white, ground is also supplied. Looks like a RS-232-bus. They are
present in the big black main connector. You should be able to catch that stream if you have the can-bus decoder for your
car.
Don't look at the upper part because this is a non can-bus version. Normally in Hyundai/KIA it's pin 1-13 or 2-14
being Can H and Can L.

halloj said:
I can only give some hints. Looking at the lower part of the picture I've uploaded you will see TXD RXD. Which most likely
is the series bus going from the can-bus decoder to the head unit. In my loom for KLD there are two wires going
from the can-bus decoder to the HU. One green, one white, ground is also supplied. Looks like a RS-232-bus. They are
present in the big black main connector. You should be able to catch that stream if you have the can-bus decoder for your
car.
Don't look at the upper part because this is a non can-bus version. Normally in Hyundai/KIA it's pin 1-13 or 2-14
being Can H and Can L.
Click to expand...
Click to collapse
I am attaching a photo of the wiring diagram of my unit. You can clearly see that it says CANRX and CANRX. So i guess that this has a canbus tranceiver in the board and the external canbus decoder only transforms the vehicle canbus protocol to the HU canbus protocol. Or it is serial rx/tx and it transforms the canbus to serial.
First thing is to figure out what the CANRX and cantx signals really are and then how these are handled from the HU.
Thank you for your time.
Edit : I cant upload the photo.

saw this
http://m.eonon.com/Accessories/Kits-Harness/A0575.html

I open my can bus decoder (VW) and only have one canbus transceiver, the CANRX, CANTX from head unit connect directly to MCU (STM32F072C8T6) USART1 pins (PB6, PB7) on can bus decoder. I'm able to replicate can bus messages with arduino and MCP2515 can bus board, but I can't figure what protocol for serial comunication use the head unit yet.

As far as I saw there is a process running on the unit responsible for canbus
Sent from my H60-L02 using XDA-Developers mobile app

bcostea said:
As far as I saw there is a process running on the unit responsible for canbus
Sent from my H60-L02 using XDA-Developers mobile app
Click to expand...
Click to collapse
This is what I know about my KLD unit with mcu.img MTCB-KLD2-v2.77.
Note: my head unit (Pumpkin KD-C0235) is a "generic" version which supports resistive-ladder type steering wheel buttons. My unit as sold does NOT support CANbus. However the main board is the same board used on many other models and I believe the MTCB-KLD2-v2.77 image will support CANbus.
1) There is a standard RS232 serial port, 38.4 k baud which is present on the main black connector (pins 2 and 12?) on the back of the unit. If you connect a terminal to this you can see data packets go out the TXD line when you power up and power down the unit.
2) The basic format of a data packet is a start byte (often 0x2E, but other values are possible too) followed by a "command" byte, then a byte count "n" followed by a block of "n" bytes, and terminated with a checksum across the command and data bytes.
3) This data packet format is apparently very common. You can see it in the Android apks for mtc serial interface (even though the actual serial connection to Android does NOT use packets of this format). You can also see it in the STC tools for programming the mcu itself.
4) The mcu software can receive and process packets of this format. Depending on the packet's command and data bytes, the packet can change mcu variables directly, or it can send a command to the Android CPU.
5) The mcu software also supports a second, PWM-encoded serial interface. If enabled, it comes in on the same wire as the UART TXD signal. The basic format is a start sequence, followed by 32 bits where a "1" is detected as a "long" pulse and a "0" is a shorter pulse width. If the format of the PWM frame does not in any way meet the timing spec, the entire frame is ignored.
6) The mcu can also send similar 32 bit PWM blocks out another wire; I believe it is pin 5 of connector "E" on my unit. The format of these PWM blocks is essentially the same as what can come in on the UART TXD line.

GlennLogan said:
My unit (Eonon GA5180F) comes with a GM Canbus decoder which works an decodes the ignition, lights, reverse into hardware signals i.e. all the normal inputs. But other data also makes it into the headunit e.g. steering wheel angle changes the reverse overlay and the doors opening/closing shows up on the display.
Click to expand...
Click to collapse
Can you post some pics of the steering wheel angle features, specifically how it changes the reverse overlay?
I'm asking because my car (BMW e53 X5) also has a steering angle sensor) and I want to see if it's possible to show steering angle overlay on the backup camera on my HU (which is an XTRONS unit for the BMW models - one of the newer oct-core ones).

Mazda 6
I have a Mazda 6 2gen and a headunit with Canbus input. One wire CANRX and one CANTX. I’m wondering if I can connect directly can-/+ from car to those wires?
The unit came with the decoder box for Mazda 6 but as far as I see there goes only reverse and brake wires to the head unit from the decoder. Steering wheel controls does not work, even if you try to connect K1 K2 wires from decoder to key1/2 or canrx/tx in the unit.
From the factory setting of the unit you can choose the Canbus protocol so is the decoder basically useless?
There are tons of topics about steering wheel controls and it’s not what I’m looking for. I want to see those climate and door opening infos on the screen.
How have you guys wired the Canbus to the unit?

Kheissi said:
I have a Mazda 6 2gen and a headunit with Canbus input. One wire CANRX and one CANTX. I’m wondering if I can connect directly can-/+ from car to those wires?
The unit came with the decoder box for Mazda 6 but as far as I see there goes only reverse and brake wires to the head unit from the decoder. Steering wheel controls does not work, even if you try to connect K1 K2 wires from decoder to key1/2 or canrx/tx in the unit.
From the factory setting of the unit you can choose the Canbus protocol so is the decoder basically useless?
There are tons of topics about steering wheel controls and it’s not what I’m looking for. I want to see those climate and door opening infos on the screen.
How have you guys wired the Canbus to the unit?
Click to expand...
Click to collapse
Sorry to bump this old thread. This is exactly what I want to know!
Why is there a list to chose protocols in HU settings when they give an external box which is said to be specific for a car maker?
I just bought the new PX6 unit for my VW T5 (2009 with CAN H & L wires in the harness).
The can box decoder (model: "Raise") doesn't interpret any CAN message correctly, not even the ignition on/off and I just don't know which protocol to chose in the HU settings or if that would make a difference at all...
Please help ?

cflaviu said:
Sorry to bump this old thread. This is exactly what I want to know!
Why is there a list to chose protocols in HU settings when they give an external box which is said to be specific for a car maker?
I just bought the new PX6 unit for my VW T5 (2009 with CAN H & L wires in the harness).
The can box decoder (model: "Raise") doesn't interpret any CAN message correctly, not even the ignition on/off and I just don't know which protocol to chose in the HU settings or if that would make a difference at all...
Please help
Click to expand...
Click to collapse
What did the reseller suggest the unit be set to?

I remember that I tried the same on a ES2709ge some years ago. I used list open files (lsof) to find out the port that the canbus app uses. Was something under /dev like you'd normally expect.
Second thing was to read from that port using cat or cu. When you kill the canbus app you immediately need to open the port yourself, otherwise the canbus app will reopen the port as it is restarted automatically. No need to know the serial parameters (baud, stop, ...) when yoir reader just reuse the previous settings. But as we don't know the serial communication it is hard to use it in a custom way.
I'd like to forward Google maps notifications to my car's KI menu, but right now I'd say it is easier to connect a second canbus controller (hardware) to SPI, I2C or another UART, instead of understanding and rewriting the default canbus app communication.

cflaviu said:
Sorry to bump this old thread. This is exactly what I want to know!
Why is there a list to chose protocols in HU settings when they give an external box which is said to be specific for a car maker?
I just bought the new PX6 unit for my VW T5 (2009 with CAN H & L wires in the harness).
The can box decoder (model: "Raise") doesn't interpret any CAN message correctly, not even the ignition on/off and I just don't know which protocol to chose in the HU settings or if that would make a difference at all...
Please help
Click to expand...
Click to collapse
My Uniway / Asottu PX6 unit came with a red CANBUS/SPDIF box and I was curious how to know which protocol to choose - then I noticed that the plastic has the brand name molded into it. In my case, SimpleSoft, which was an option in the CAN settings. Maybe just look on the box for a brand?

So did you find out something in the end?

Chinese radio has TXD and RXD on the little white 8 pins connector on the back. These wires go to CAN box, that translates messages between RS232 TTL and CANBUS sides. Key1 and key2 use resistors with a different value for each button. Different radios require different resistor values and that is because Android radios have a learning dialog.

Related

Malaysk rom: how to startup app into background and cannot change steering buttons

Hi,
Ik use Malaysk rom (version RK3188) on an seicaneunit in my Mini Cooper R56.
I have some issue's/problems which i cannot solve or get an aswer to...
1.
I want to run the app 'flitsmeister' (a app for traffic info and speed traps warnings). This apps runs in background and popups when it detects traffic or a speed trap, this works OK. But when i start it on boot it stays on top until i press home etc. I would like to start this app on boot and it should run in the background or the home button should be 'pressed' automaticly after a few seconds.
Is there a way to do this in this rom?!
2.
I cannot change the steering buttons control, when i open the menu and press the key to assign it simply performs the default assigned function, i cannot change this in anyway. How can i change the behavour of the steering wheel controls and save this?
3.
Is there a update for a newer android version (5 or 6) for this unit which i can use?

Steerling wheel functionality works through a canbus which most newer cars have. Seicane eonon etc all use canbus.. however thats if your vehicle have one which it should. Problem one.. your missing a canbus..
If you have a canbus 2 issues possible.
Canbus is picky and eah make speaks their own language.. now most chinese aftermarket HU use a multi purpose canbus decoder which your vehicle may not pick up or you have a faulty canbus.
2. Canbus wiring.. now alot of makes run wiring through the oem harness.. depending the hu in the modle of car.. like running a stock crappy system vs an alpine, inifinte, bode system where multipul components talk.. but that then becomes a sound issues differet topic.
The canbus wiring itself could be wrong off the new HU harness you'll have to check seicanes crappy wiring diagram matching to your oem harness. Where the canbus connection is use a multimeter with the car off.., on accessory and started.
Future reference..
Seicane eonon etc have messed up the wiring giving the canbud power even when the car is off.. meaning they ran the power off the battery live wire.. vs just the accessory and on power wire.. draining the battery of your vehicle. Simple fix youll have to just switch the power wire to the correct wire being accessories and on.
At the end of the day you most likely need the canbus for the steering wheel functions to work. Ifcyou have it do soke trouble shooting

Android 7.1.2 PX3, MTCE_MX_V2.74_1 - Peugeot 407 2005-2008

Hi Guys,
Can anyone recommend a CAN bus decoder for this head unit as the one supplied with the radio is great receiving messages from the car, but the head unit / CAN bus decoder combi has very, very limited functionality controlling the car settings (only Auto headlights ON/OFF works).
At the moment the car is stuck in KPH (K/100l) and °F - would really like to get the car back to °C and MPH (MPG). I don't know the CAN bus decoder manufacturer as there is no obvious external markings -
CAN BUS DECODER
MH (PA-SS-07) 20171013
SS-PA073271010-1
For: PEUGEOT 407
P/N: 1814600028
Software: PSA V1.00.012BYPS
Thank for any help
Mobi

I have the same one and it works good. In Car settings I switched it to C and KM

I wish I had a MPG option to chose from and the temperature unit is stuck as °C but displays °F on the display (car settings)

Mobi01 said:
I wish I had a MPG option to chose from and the temperature unit is stuck as °C but displays °F on the display (car settings)
Click to expand...
Click to collapse
mam ten sam problem na px5 xtce mx2 v2.27_2

I used to have a separate CAR SETTINGS apk to set the i-cockpit info language of my Peugeot.
Can anyone send me a backup of the car setting apk?
I have lost it when I update the mtcd firmware so now I can't set my peugeot car language and it's in French.
I want to change the language back to English. Many thanks.

canbus apk is only visible when the canbus profile matches your car make n model.
Id try changing the profiles back and forth and see if this fixes it.

Xorit said:
canbus apk is only visible when the canbus profile matches your car make n model.
Id try changing the profiles back and forth and see if this fixes it.
Click to expand...
Click to collapse
I have tried to use Canbus 61 PSI Simple for my peugeot 3008 steering wheel control is working.
The control settings apk showed up but not much I can change in there and also there is no language option in there so I can't change the language to English.
I also tried Canbus 50 for Peugeot 3008 rise but nothing is work so look like not much I can do to change the language unless use the old original radio control but it is too much hassle to take this android unit out and reconnect the original radio. Thanks anyway.

Same problem, have you solved it?

Dasaita V600 Head Unit not switching to reverse camera

Finally installed a reverse camera on my BMW E46, all cables are right connected and the camera is working during a test on workbench.
My Dasaita V600 head unit (MCU updated to last 2.80 version) dont have a "reverse signale cable" but is supposed to switch in reverse camera through the canbus (E39-E46 software V1.0) so my camera is only connected to "CAM-IN yellow" cable for HU.
Putting reverse gear (motor running or not) the head units dont auto switch to "CAM IN" input for showing images from camera. Anyone had this issue? Any help?
P.S.: If the camera is connected to "AUX Video IN" and manually started AVIN app images are on screen, so no troubles with camera and/or connections.
Thank you in advance

What did the reseller advise you when you contacted them for support?

marchnz said:
What did the reseller advise you when you contacted them for support?
Click to expand...
Click to collapse
I'm waiting a reply from Dasaita support

iRcKenny said:
I'm waiting a reply from Dasaita support
Click to expand...
Click to collapse
Hi, have you been able to correct this issue ?

tmarto said:
Hi, have you been able to correct this issue ?
Click to expand...
Click to collapse
Solved by myself and taking a little risk

had a similar problem, turns out you have to enable 'prohibit reverse' in factory settings

k0sTi said:
had a similar problem, turns out you have to enable 'prohibit reverse' in factory settings
Click to expand...
Click to collapse
The options was enabled by default on my unit. Tried all options and deep searching for a "software solution" without luck.
Only working thing i find was cutting a wire from canbus box and direct connect the other side from my HU to reverse signal wire from my auto.
I think that was caused from BMW E46 I-BUS signals not fully decoded from canbus, i have retained all steering wheels controls but not doors open warnings, if they are supposed to show on HU display.
If anyone have some advices they are welcome.
P.S.: In my case working for steering wheel controls setting are NO CANBUS. If i try to select another BMW voice from list i lose steering wheel controls.

iRcKenny said:
The options was enabled by default on my unit. Tried all options and deep searching for a "software solution" without luck.
Only working thing i find was cutting a wire from canbus box and direct connect the other side from my HU to reverse signal wire from my auto.
I think that was caused from BMW E46 I-BUS signals not fully decoded from canbus, i have retained all steering wheels controls but not doors open warnings, if they are supposed to show on HU display.
If anyone have some advices they are welcome.
P.S.: In my case working for steering wheel controls setting are NO CANBUS. If i try to select another BMW voice from list i lose steering wheel controls.
Click to expand...
Click to collapse
Can you tell me what wire you cut and connected the blue from reverse light?
BL/GE - Blue/Yellow wire
I understood that it was a wire between the headunit and the canbus decoder.
(on Automatic Gear Box it seems it works just fine)
I know that the data is send and it works The Ibus is able to detect the msg, this decoders just don't catch on older veicules with Manual Gear Box.

Napas2199 said:
Can you tell me what wire you cut and connected the blue from reverse light?
BL/GE - Blue/Yellow wire
I understood that it was a wire between the headunit and the canbus decoder.
(on Automatic Gear Box it seems it works just fine)
I know that the data is send and it works The Ibus is able to detect the msg, this decoders just don't catch on older veicules with Manual Gear Box.
Click to expand...
Click to collapse
If i remember well i think it was the Blue/Yellow wire (my is the touring version) but easy is checking with the help of a multimeter

iRcKenny said:
If i remember well i think it was the Blue/Yellow wire (my is the touring version) but easy is checking with the help of a multimeter
Click to expand...
Click to collapse
Sorry i did not explain correctly.
The BL/GE - Blue/Yellow wire is the one i'm going to connect to a specific wire that is cut from the headunit
What Reverse/Back wire did you cut to get the reverse signal on the HeadUnit+Canbus decoder?

Napas2199 said:
Sorry i did not explain correctly.
The BL/GE - Blue/Yellow wire is the one i'm going to connect to a specific wire that is cut from the headunit
What Reverse/Back wire did you cut to get the reverse signal on the HeadUnit+Canbus decoder?
Click to expand...
Click to collapse
i used the wire number 2 labeled "reverse" on HU side, but you need to be sure that your HU is a Dasaita for BMW E46.
Check the wire/connection label on your HU for confirmation.
P.S.: On kmy case the wire was orange

iRcKenny said:
i used the wire number 2 labeled "reverse" on HU side, but you need to be sure that your HU is a Dasaita for BMW E46.
Check the wire/connection label on your HU for confirmation.
P.S.: On kmy case the wire was orange
Click to expand...
Click to collapse
I don't think it's strictly Dasaita, as this is the same for Eonon as well. I had to tap into the blue wire between the HU & CANBUS converter. I have the power for the camera tapped into the reverse light.
I too have an E46 Touring. I'm curious, where did you mount your camera? I put mine right above the licence plate dead center of the hatch release button. It's a perfect spot! I removed the torx screws and slid it behind the plate light bracket and ran the wires through there as well. It works fantastic in this location and it even assists when connecting a trailer because it's close to the hitch.

ChrisFromSH said:
I don't think it's strictly Dasaita, as this is the same for Eonon as well. I had to tap into the blue wire between the HU & CANBUS converter. I have the power for the camera tapped into the reverse light.
I too have an E46 Touring. I'm curious, where did you mount your camera? I put mine right above the licence plate dead center of the hatch release button. It's a perfect spot! I removed the torx screws and slid it behind the plate light bracket and ran the wires through there as well. It works fantastic in this location and it even assists when connecting a trailer because it's close to the hitch.
Click to expand...
Click to collapse
installed mine on license plate light.
A question if i can: your HU is capable to show opened doors? Im not able to find that option on my factory settings and also on my unit on Canbus options i have set "No canbus", if i set another bmw choice i lose swc controls.

iRcKenny said:
installed mine on license plate light.
A question if i can: your HU is capable to show opened doors? Im not able to find that option on my factory settings and also on my unit on Canbus options i have set "No canbus", if i set another bmw choice i lose swc controls.
Click to expand...
Click to collapse
I've seen cameras that replace one of the lights. I thought about 3D printing an adapter but I went the route I did to keep both lights and have the camera dead center.
Yes, but you need the I-BUS interface to do that. The Canbus converter doesn't do much. With the I-BUS interface & I-BUS app you're able to see what doors and windows are open, what lights are on, and you can code your car as well.

[Help] SWC only works 50% bottons Alfa Romeo 159

Hi
My auto radio version is:
px3-userdebug 7.1.2 NHG47L eng.hct20180
MTCE_XRC_V2.80_1
2Gb/ 16Gb
https://es.aliexpress.com/item/Isud...452.html?spm=a2g0s.9042311.0.0.215563c05GDxho
My Car: Alfa Romeo 159
Since a month ago, I´m trying to resolve my problem. Only 50% buttons swc are working:
My android radio has canbus box. I have accessed and configured canbus in "factory settings tap" but my problem continue ( by default canbus wasn´t configured ).
The app to remap the buttons does not detect any button on the steering wheel, it only shows "Reset" and "Save" but I can not do anything with it.
I have reading a lot of post... Is possible that I need to connect wire Key1 and wire Key2? How should I connect "key1" and "key2"? Could it be the solution?
Any kind of help is welcome. Thank you very much

moreno_cos said:
Hi
My auto radio version is:
px3-userdebug 7.1.2 NHG47L eng.hct20180
MTCE_XRC_V2.80_1
2Gb/ 16Gb
https://es.aliexpress.com/item/Isud...452.html?spm=a2g0s.9042311.0.0.215563c05GDxho
My Car: Alfa Romeo 159
Since a month ago, I´m trying to resolve my problem. Only 50% buttons swc are working:
My android radio has canbus box. I have accessed and configured canbus in "factory settings tap" but my problem continue ( by default canbus wasn´t configured ).
The app to remap the buttons does not detect any button on the steering wheel, it only shows "Reset" and "Save" but I can not do anything with it.
I have reading a lot of post... Is possible that I need to connect wire Key1 and wire Key2? How should I connect "key1" and "key2"? Could it be the solution?
Any kind of help is welcome. Thank you very much
Click to expand...
Click to collapse
Check that allí connectors from/to canbus and to the headunit are well connected (sometimes they require some force press to really be plugged)
On the link you provided there is a guy that commented that everything worked as expected including the SWC so....if you can't fix it contact your seller for support
Enviado desde mi SM-G950F mediante Tapatalk

moreno_cos said:
Hi
My auto radio version is:
px3-userdebug 7.1.2 NHG47L eng.hct20180
MTCE_XRC_V2.80_1
2Gb/ 16Gb
https://es.aliexpress.com/item/Isud...452.html?spm=a2g0s.9042311.0.0.215563c05GDxho
My Car: Alfa Romeo 159
Since a month ago, I´m trying to resolve my problem. Only 50% buttons swc are working:
My android radio has canbus box. I have accessed and configured canbus in "factory settings tap" but my problem continue ( by default canbus wasn´t configured ).
The app to remap the buttons does not detect any button on the steering wheel, it only shows "Reset" and "Save" but I can not do anything with it.
I have reading a lot of post... Is possible that I need to connect wire Key1 and wire Key2? How should I connect "key1" and "key2"? Could it be the solution?
Any kind of help is welcome. Thank you very much
Click to expand...
Click to collapse
On 1st photo the 3 "red" buttons are only working with the "original" factory installed "blue&Me" equipment, no other hardware can use or decode them.
On 2nd photo the 2 "red" button are only working with the original factory installed "blue&Me" equipment ad use to switch information on Factory Magneti Marelli multimedia/navigation unit during calls, with standard "simply" Alfa Romeo car stereo they are only working on charging disc from official CD Charger; no other hardware can use or decode them.
On some cases "non standard hard coded manufacturer swc" have funny responses; in my case Voice command button open the app carousel in my HU and the Open/close a phone call button activate the Mute function.
Check you Alfa Romeo Use and Maintenance Guide and Blue&Me User manual thaere was all the info provided by me.
So the other SWC are working like expected!

iRcKenny said:
On 1st photo the 3 "red" buttons are only working with the "original" factory installed "blue&Me" equipment, no other hardware can use or decode them.
On 2nd photo the 2 "red" button are only working with the original factory installed "blue&Me" equipment ad use to switch information on Factory Magneti Marelli multimedia/navigation unit during calls, with standard "simply" Alfa Romeo car stereo they are only working on charging disc from official CD Charger; no other hardware can use or decode them.
On some cases "non standard hard coded manufacturer swc" have funny responses; in my case Voice command button open the app carousel in my HU and the Open/close a phone call button activate the Mute function.
Check you Alfa Romeo Use and Maintenance Guide and Blue&Me User manual thaere was all the info provided by me.
So the other SWC are working like expected!
Click to expand...
Click to collapse
On 1st photo: I agree with you. My alfa romeo is a car of 2007 and it hasn´t blue&me installed. I did not know if I could use these buttons with the new radio
On 2nd photo: The buttons were working with my original radio. I could change the memorized radio programs. I've seen in some YouTube video, how this function is still operational with the android radio car and I would like use its.
Thank you very much for your help

moreno_cos said:
On 1st photo: I agree with you. My alfa romeo is a car of 2007 and it hasn´t blue&me installed. I did not know if I could use these buttons with the new radio
On 2nd photo: The buttons were working with my original radio. I could change the memorized radio programs. I've seen in some YouTube video, how this function is still operational with the android radio car and I would like use its.
Thank you very much for your help
Click to expand...
Click to collapse
Try long pressing the ones for "skip tracks/seek radio stations". My units acts like this. Try also all "Alfa Romes" canbus entries on Factory Settings

iRcKenny said:
On 1st photo the 3 "red" buttons are only working with the "original" factory installed "blue&Me" equipment, no other hardware can use or decode them.
On 2nd photo the 2 "red" button are only working with the original factory installed "blue&Me" equipment ad use to switch information on Factory Magneti Marelli multimedia/navigation unit during calls, with standard "simply" Alfa Romeo car stereo they are only working on charging disc from official CD Charger; no other hardware can use or decode them.
On some cases "non standard hard coded manufacturer swc" have funny responses; in my case Voice command button open the app carousel in my HU and the Open/close a phone call button activate the Mute function.
Check you Alfa Romeo Use and Maintenance Guide and Blue&Me User manual thaere was all the info provided by me.
So the other SWC are working like expected!
Click to expand...
Click to collapse
iRcKenny said:
Try long pressing the ones for "skip tracks/seek radio stations". My units acts like this. Try also all "Alfa Romes" canbus entries on Factory Settings
Click to expand...
Click to collapse
Long pressing not working, and I´ve tried to configure canbus tap but it not resolve de issue
Thank you again

Hi!!
My Alfa 159 works like yours, only 4 buttons are working. I had one unit android 5.1 before the 7.1.2 and everything from swc work.
If you have the solution please MP

Ruiroach said:
Hi!!
My Alfa 159 works like yours, only 4 buttons are working. I had one unit android 5.1 before the 7.1.2 and everything from swc work.
If you have the solution please MP
Click to expand...
Click to collapse
The seller send me a rom update, but I don´t sure to update the radio... Will it solve the problem or will it further damage it...
I can send you the rom if yo want it

moreno_cos said:
The seller send me a rom update, but I don´t sure to update the radio... Will it solve the problem or will it further damage it...
I can send you the rom if yo want it
Click to expand...
Click to collapse
I dont think it will make any difference, there is a way that MTCDTools can remap SWC on cars with CAN Bus, @ikerg can tell you how to do it or what thread its in.

typos1 said:
I dont think it will make any difference, there is a way that MTCDTools can remap SWC on cars with CAN Bus, @ikerg can tell you how to do it or what thread its in.
Click to expand...
Click to collapse
any ideas please?

moreno_cos said:
any ideas please?
Click to expand...
Click to collapse
pm @ikerg or search the forums, hes deffo mentioned how to do it on CAN Bus units before.

typos1 said:
pm @ikerg or search the forums, hes deffo mentioned how to do it on CAN Bus units before.
Click to expand...
Click to collapse
Found said posts and they were for car which communicate with resistive signals via canbus (or something ), so wiring the canbus from car harness directly to key1/2 gives access to the buttons.
If Alfa uses no resistive signals, you wont get away with this.
GM cars like mine have the buttons via hardcoded addresses via canbus and you can only try to find those codes in android or mod MCU profile it seems... too nub to do so in my case.. trying hard

Xorit said:
Found said posts and they were for car which communicate with resistive signals via canbus (or something ), so wiring the canbus from car harness directly to key1/2 gives access to the buttons.
If Alfa uses no resistive signals, you wont get away with this.
GM cars like mine have the buttons via hardcoded addresses via canbus and you can only try to find those codes in android or mod MCU profile it seems... too nub to do so in my case.. trying hard
Click to expand...
Click to collapse
Theyre not the posts I was talking about - pretty certain theres a way to programme CAN Bus SWC.
Alfa 159s have CAN Bus SWC.

I've had a similar problem with my Alfa 159 when I installed a PX3 unit. However, for me all the SWC buttons except the centre button on the left set work (i.e. pic 1) and only the left and right SWC buttons on the right set (i.e. pic 2). It is weird as the buttons that do not work mimic the other buttons for some reason so it's like crossing of signals or decoding it wrong.
As I didn't find anyone else having a problem I assumed it was either the CAN bus decoder (I opened it up and flipped switch 4 which helped I think but maybe it isn't suitable?) or the connection behind the steering wheel is loose. I haven't got round to checking the connection (apparently it's simple to open) as I can still control most things.
BTW, my car had the blue&me installed from factory.

SWC on Alfa Romeo 159
H all, I just installed a new Android head unit in my Alfa Romeo 159 SW (2006) and all the SWC's work and I can map them from the app. Below I will explain how I did it, hope this will help.
My head unit:
Xtrons TE706PL
PX 5 octacore 4GB 32BG Android 8
My car:
Alfa Romeo 159 SW
Upgraded from original radio (so not the navigation unit)
My car did not have Blue&Me
Required hardware:
Dedicated CANBUS adapter
Connect2 (company that make it) CTSAR002.2 (product number)
Patch lead to go with canbus adapter
Connect2 (company that make it) CTMULTILEAD.2 (product number)
I ordered both from Amazon Germany from seller NIQ. The patch lead was included with the CANBUS adapter, just make sure to select the correct one meant for Chinese head units. Price was 60 euros.
Installation
The CANBUS adapter is connected between the original car connections and the head unit. This looks confusing at first (it has connections on three sides), but in the end everything only fits one way. On one side connect the patch lead, on the other side it is connected to the head unit and on the last side it is connected to the original car plugs. All these connections are very simple with plugs that only fit one way. (I did need quite some force to push in the 2 of the 3 original plugs into the CANBUS adapter)
As mentioned, the patch lead is connected to the CANBUS adapter on one side. On the other side you need to connect it to the KEY 1, KEY 2 and GROUND wire coming from the head unit. This was the only connection that is not made with plugs, so either crimp them together (which I did, very simple, but you need a crimping tool), solder them, or make another good wire to wire connection.
Important notes:
The connection need to be made in a specific order!
First connect KEY 1, KEY 2 and GRND wires
Second connect the CANBUS adapter to the head unit
Last step is to connect the CANBUS adapter to the car connections
My car did not have Blue&Me, so I don't know if this changes anything. I think I read somewhere you can just leave it in the car and not connect it. But maybe do a little research.
All this is also specified in the manuals provided with the products. Connects2 has some nice youtube videos on the CANBUS adapters, just google them.
I did quite some research myself before I figured it out, but now all is installed and working perfectly! I reprogrammed all the keys to my own preferences, including google assistant speech activation button.
Hope this helps!

SJ1977 said:
H all, I just installed a new Android head unit in my Alfa Romeo 159 SW (2006) and all the SWC's work and I can map them from the app. Below I will explain how I did it, hope this will help.
My head unit:
Xtrons TE706PL
PX 5 octacore 4GB 32BG Android 8
My car:
Alfa Romeo 159 SW
Upgraded from original radio (so not the navigation unit)
My car did not have Blue&Me
Required hardware:
Dedicated CANBUS adapter
Connect2 (company that make it) CTSAR002.2 (product number)
Patch lead to go with canbus adapter
Connect2 (company that make it) CTMULTILEAD.2 (product number)
I ordered both from Amazon Germany from seller NIQ. The patch lead was included with the CANBUS adapter, just make sure to select the correct one meant for Chinese head units. Price was 60 euros.
Installation
The CANBUS adapter is connected between the original car connections and the head unit. This looks confusing at first (it has connections on three sides), but in the end everything only fits one way. On one side connect the patch lead, on the other side it is connected to the head unit and on the last side it is connected to the original car plugs. All these connections are very simple with plugs that only fit one way. (I did need quite some force to push in the 2 of the 3 original plugs into the CANBUS adapter)
As mentioned, the patch lead is connected to the CANBUS adapter on one side. On the other side you need to connect it to the KEY 1, KEY 2 and GROUND wire coming from the head unit. This was the only connection that is not made with plugs, so either crimp them together (which I did, very simple, but you need a crimping tool), solder them, or make another good wire to wire connection.
Important notes:
The connection need to be made in a specific order!
First connect KEY 1, KEY 2 and GRND wires
Second connect the CANBUS adapter to the head unit
Last step is to connect the CANBUS adapter to the car connections
My car did not have Blue&Me, so I don't know if this changes anything. I think I read somewhere you can just leave it in the car and not connect it. But maybe do a little research.
All this is also specified in the manuals provided with the products. Connects2 has some nice youtube videos on the CANBUS adapters, just google them.
I did quite some research myself before I figured it out, but now all is installed and working perfectly! I reprogrammed all the keys to my own preferences, including google assistant speech activation button.
Hope this helps!
Click to expand...
Click to collapse
Thanks for the info, but what unit do you have ? - "TE706PL" is a made up name, your MCU will tell us what unit it is, I m guessing a GS ?

typos1 said:
Thanks for the info, but what unit do you have ? - "TE706PL" is a made up name, your MCU will tell us what unit it is, I m guessing a GS ?
Click to expand...
Click to collapse
Sorry, I was not near my car, so couldn't find my MCU version. But here it is:
MTCE_GS_V2.88_3
Jun 12 2018 11:17:36

I have a PX5 and have the same issue.
I see people talking about their chinesses mtcd/e read all the can protocols (open doors, all the swc, radio info to main pannel...)
Talking to my seller, he told me that may be the can decoder. Offers me a refund but I want one that works 100%.
¿Someone have the full functional decoder?

bantroi said:
I have a PX5 and have the same issue.
I see people talking about their chinesses mtcd/e read all the can protocols (open doors, all the swc, radio info to main pannel...)
Talking to my seller, he told me that may be the can decoder. Offers me a refund but I want one that works 100%.
¿Someone have the full functional decoder?
Click to expand...
Click to collapse
More likely that its just not supported, some cars have even less support.

bantroi said:
I have a PX5 and have the same issue.
I see people talking about their chinesses mtcd/e read all the can protocols (open doors, all the swc, radio info to main pannel...)
Talking to my seller, he told me that may be the can decoder. Offers me a refund but I want one that works 100%.
¿Someone have the full functional decoder?
Click to expand...
Click to collapse
That's what Im trying to find, a canbus decoder with more options.
I had the alfa 159 android 5.1 unit and It shows temperature, doors and full keys function. I upgraded to a new unit android 7.1 and now I haven't temperature, doors and only half of keys are working.

PX5- steering wheel control issue & reverse camera blinking

Hello everyone,
I have a Dasaita PX5 and Android 8.0 for my Jeep Compass 2018. Problem is that (1) steering wheel controls have stopped working. Used to work for a while when the unit was first installed then one day just ceased to function. And (2) reverse camera video is blinking after driving for around 20-30 mins (doesn’t blink when engine is on and not running)
I've updated both the MCU (V3.45) and system update (20190731) to the latest ones in hopes of fixing it. I also went to factory settings and tried all canbus that had "Jeep" on it and selected the right model of the car but SWC still not working including the controls at the back of the steering wheel. The only thing that's working is the right side of the steering wheel which is the cruise control function.
I had an auto electrician check it and said “there's no problem with electrical side“ and now he's saying maybe the switches are broken (which I doubt) cos when the car battery was changed not long ago (SWC already not working this time), SWC came back to life but only for short period of time.
Please help me figure this out. Any advice would be greatly appreciated.
PS: also posted on android head unit thread. I wasn’t sure if I was posting in the right one. Thanks!

I'd try to disconnect the car battery for some minutes and see if the steering wheel controls return to work at least for some time.
If so, the head unit canbus adapter might be faulty,

I'd say there's a loose connection in the power feed of the CANbus decoder. More likely the ground wire is the problem. It could be loose or broken at either ends (including inside the decoder box) or along the length. Your electrician should know how to test for that.

Thanks for the reply guys. I’ll check this out and inform my electrician. Do you think the camera issue is related to this as well? I might need to order a new canbus adapter..

The HU gets the transmission is in reverse signal from the CANbus box so if the box kicks in and out so will the backup camera.

I put back the factory unit back in (factory unit worked without issues) but the steering wheel buttons still didn't work. Does this mean that the problem lies in the steering wheel buttons and not in the CANbus decoder?

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