Dasaita Head Unit steering button issue

[keithbribac]

My car is a 2017 WRX STI with Harman kardon system. I know the dasaita is not designed to work with it but I've put my own amp, wired new speakers and made it work. I was having issue with turning on my amp and backup camera when I put my car in reverse. However I was able to map all my steering wheel buttons correctly. Then after that, I was able to figure out how to turn on my amp by moving one of the wiring pins in the harness and connect directly to my remote turn on lead to the amp. Also I was able to provide power to the backup cam when I put my car in reverse and now it works. My issue now is that my directional buttons on the steering wheel doesn't work anymore. Other buttons work like the mute button. Anyone have a wiring harness diagram for the steering wheel buttons from dasaita? I had an Android head unit before and that one I had no issue with it recognizing the steering wheel button commands.

 

[maxiauer]

With "directional buttons" you mean up/down (prev/next) right?
So, the Android units do not have too many choices. You either use the CanBus provided by Dasaita (or several 3rd party) for your vehicle "family" (usually same CanBus shared among different car models and brands) and you live with whatever is supported (usually only Vol +/-, Mute, Prev/Next), or you connect your steering wheel buttons to the "Key-1" and "Key-2" cables on the unit and you configure/program the unit to execute an action when buttons are pressed.

For using Key-1 and Key-2 cables:
1) You need to verify that your steering wheel buttons are restive (pressing a button changes the resistance seen by the unit)
2) You need the diagram of your steering wheel as different sections are connected to different units on the car and so use different cables. As an example, on my Mazda:
- Perv/Next, Vol +/-, Mute are one resistance bridge that goes to the stereo (one cable, as the "-" is always chassis)
- Talk, Pick-up, Hang-down is another cable that goes to the Bluetooth unit (again one cable, and the bluetooth unit then connects to the Aux of the stereo)
- Up/Down/Left/Right and Enter (the other side of the steering wheel) goes to the Computer Display (have not played with this one, no idea if it is one cable or more)

In my case I left the Vol/Mute/Prev-Next alone as it was working via the CanBus, but I cut the cable going from the steering wheel to the Bluetooth Unit and connected it to Key2 in a PX5 MTC-D Dasaita unit and configured those keys to handle phone calls + Google Assistant. I guess I still have Key-1 if one day I want to completely kill the factory "computer display" that any way only shows basic statistics.

Hope this helps. I can share the Mazda Steering Wheel circuit so you can see what you should be looking for (most probably Subaru will use other color code for the cabling)

 

[dodis827]

Key 1 Key 2

I bought some external buttons that I want to connect Android car stereo dasaita can you indicate the cables key 1 key 2 where to connect?