[Android Head-Units] jdwis:
Hi guys

A friend of mine who is not technical, wanted to go for an Android Head Unit, I did some research and advised him Xonrich, so he went and bought it from AliExpress.

Head unit specs: Brand name - XONRICH, 2GB + 32GB, 7", Android ver 9, RDS, GPS.. No CANbus Box, SD Card slot.. and some extras, nothing so specifically special.

First of all I tried testing the unit, making sure all functionality works as it should be.

Apart from few gotchas, I narrowed it down and now it has 2 major problems.

1 - SD Card is not working any more. It did work as I checked and played the songs through the SD Card, it also showed to Eject message (if i wanted to) but don’t know when it stopped working, doesn’t show any Eject message or not even recognising the presence of the card, neither any File Manager recognises the card as well. - Starting another thread for this as I do not want to mix 2 issues together.

2 - Steering Wheel Controls: Now this is higher priority to fix it as there is still some argument going on with the seller but I don’t think seller is going to agree to anything. The seller showed in the advert that CANbux Box is provided with the unit, so I thought it would be easy to hook it up and shouldn’t be any issue. But seller didn’t send one and he argues that he is not going to, so the dispute is ongoing anyway.

Regardless, I explained my friend that he would need one anyways to use Steering Wheel Control. He already has one in his car from Connetcs2 so I thought we could use that for time being.

Now I am not very savvy in fixing SWC with its adapter/decoder whatever we call it, so here I am for your help.

The car is Merc, current 1 Din stereo is Alpine with SWC Stalk Control Adapter, which is Connects2 (CTSMC004.2). All SWC buttons working fine as expected.

The following I tried to make it work with this bl**dy Chinese head unit and it just doesn’t want to give up.

Connects2 (CTSMC004.2) unit comes with a Patch Lead as well for altering the connection as per specific stereo (including Chinese models)

As per the manual (Patch Lead pic attached), I made sure Orange, Green & Purple are all connected to its specific pins.

There comes 3 wires from head unit - Key-1, Key2 & GND

Connected those to match it with Patch Lead - Key-1, Key-2 & GND.

Now in the Factory settings (Head unit) there is an option for CANbus, which was set as NO (meaning no inbuilt CANbus?? Or No CANbus attached?? - No idea), I left this NO option as it is to begin with.

The keys on the steering I could use are - Vol +, Vol -, Phone ON, Phone Off, Next & Prev (total 6 buttons)

Using the app came with the unit - WheelKey Study - I tried to assign the steering wheel keys, but whenever I press any key e.g. Vol+, the program (WheelKey Study) would register that key, then trying to assign 2nd key, the program would overwrite the first assigned key, though I never SAVED the studied material, still trying to add the new assignments, but the prog would pick only 1 key, and not consider to go for 2nd key.

No matter how many times I save and open and try to add 2nd assignment, the prog would just keep only last assigned option.

I tried changing the CanBus option in Factory Setting and changed to different Merc model but still issue persists.

Can anyone please help on this?