The head unit itself is probably giving you a parasitic drain It was covered under warranty Just get a new head unit, it'll give you better sound quality, likely a nicer screen, and you can get wireless android auto or carplay for.
Fixing an Unresponsive Touchscreen: Step-by-Step Troubleshooting Guide
Ghost touch in car screens is almost always caused by hardware degradation, not user error or software bugs
Heat, delamination, moisture, and digitizer failure are the primary culprits—and the problem.
On harman units, glitches showed up as random reboots, frozen logos, or menus. Took several attempts of pestering the dealer and pointing towards the class action suit on this unit model They finally conceded and ordered a replacement which came in about 2 weeks. But here’s the important question most owners never get answered
Is it ghost touch… or is it digitizer failure Understanding the difference can save you thousands of dollars and prevent unnecessary head. Subaru’s starlink infotainment system has a serious problem that goes way beyond annoying glitches The touchscreen develops what owners call “ghost touch”—it registers touches that.
Learn why ghost touching happens, how to try a quick reset and when it’s time to repair it.
Ghost touches on my screen as well as bluetooth occasionally dropping when i'm on calls Dealership said there was a recall years back and i already had my headunit replaced I also have a 2019 wrx and my head unit did the same thing
