Help with 2020 STI steering wheel control wires

davew012 · 12-31-2021, 05:16 PM

I recently installed an Alpine ILX-W650 head unit and want to retain the factory steering wheel audio controls. I have the Axxess ASWC-1 universal adapter and made the following connections: green/orange to pin 21 brown/black, green/black to pin 22 blue/yellow and then grounded pin 23 yellow. I also connected the ground and switched +12v to the ASWC-1. It goes through the programming and does indicate it’s connected to an Alpine head unit but some controls are wrong. The volume- actual turns the volume up and volume up scans the presets on the radio. The center mute button turns the volume down. Has anyone tried this in a 2019 or 2020 WRX or STI?

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davew012 · 01-01-2022, 10:05 PM

I’m ditching the ASWC-1 and going to try the idatalink maestro universal SW module. I already flashed it and will install tomorrow.

davew012 · 01-03-2022, 10:39 PM

Quote:

Originally Posted by davew012

I’m ditching the ASWC-1 and going to try the idatalink maestro universal SW module. I already flashed it and will install tomorrow.

Just in case anyone else wants to do this on their 2019+ WRX/ STI the maestro universal steering wheel module worked perfectly. The software is easy to use and shows you exactly which wires need to be connected.

GoFrogs · 01-04-2022, 12:39 AM

Quote:

Originally Posted by davew012

Just in case anyone else wants to do this on their 2019+ WRX/ STI the maestro universal steering wheel module worked perfectly. The software is easy to use and shows you exactly which wires need to be connected.

awesome, thanks for the heads up.

12-31-2021, 05:16 PM	#1
davew012 Scooby Newbie Member#: 423130 Join Date: Jun 2015 Chapter/Region: NESIC Location: Derry, NH Vehicle: 2020 STI Ice Silver	Help with 2020 STI steering wheel control wires I recently installed an Alpine ILX-W650 head unit and want to retain the factory steering wheel audio controls. I have the Axxess ASWC-1 universal adapter and made the following connections: green/orange to pin 21 brown/black, green/black to pin 22 blue/yellow and then grounded pin 23 yellow. I also connected the ground and switched +12v to the ASWC-1. It goes through the programming and does indicate it’s connected to an Alpine head unit but some controls are wrong. The volume- actual turns the volume up and volume up scans the presets on the radio. The center mute button turns the volume down. Has anyone tried this in a 2019 or 2020 WRX or STI? * Registered users of the site do not see these ads.

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01-01-2022, 10:05 PM	#2
davew012 Scooby Newbie Member#: 423130 Join Date: Jun 2015 Chapter/Region: NESIC Location: Derry, NH Vehicle: 2020 STI Ice Silver	I’m ditching the ASWC-1 and going to try the idatalink maestro universal SW module. I already flashed it and will install tomorrow.