Quote:
Originally Posted by Ethan_1evy
where do i check this?
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Actually, I'm assuming your "upgraded carplay head unit" is an Android Monitor with carplay. If so, go to the SETTINGS in your Android Monitor. Did you install it yourself?
I agree with @RL18, I would definetly get a new one just in case, cheap on ebay. But pg.2 of that thread I linked showed how to reactivate the Aux In with bimmercode...if not the bad port or settings in the monitor.