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Steering Wheel Control Wiring (2015 WRX/Levorg)


ToomTom

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Hi,

I am not the greatest with wiring but I have done my best... I got a new headunit for my 2015 Levorg and managed to wire it all in  and replace the Japanese Panasonic unit which is great. However im stuck on the steering wheel control section.

I have a 20 pin connector and took pins 4,14 and 13 and wired it to the 3.5mm adapter. This got my source, mute, and both phone buttons working (after i mapped them in the headunit), but i cant for the life of me figure out how to get volume up/down and the skip buttons working. When i try to map them it doesnt detect it. 

Are the signals sent through the same wire and I need a controller? or are there additional wires im missing? I also loosely referred to this http://ae64.com/20-pin-pinout.htm 

Is anyone able to help?

Cheers!

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Did you ever do it on the STI? It should be pretty similar.

I had issues with mine as the button resistances were too close together so it would often volume down when clicking up which I've never really resolved. 

 

It might be easier to trace it back to behind the wheel and test it out there. Or even with a multimeter at the plug behind the HU

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