[2017M240i]

In another discussion, I described an intermittent speaker signal issue that is either the amp or wiring. The dealership shop foremen thinks its probably a short in the wiring somewhere if it's not a loose wire from the amp harness. Because the problem is not occurring right now they say it's hard to diagnose.

BUT they are flagging the car with BMW engineers. They say it's BMW policy to void warranties for any aftermarket parts including speakers. They made me put back in the factory speakers before they'd even look at the car. I informed them of the Moss act but they tell me I'll have to sue BMW to get the warranty coverage. This is Advantage BMW in Houston.

Has anyone had this experience with BMW or dealerships? These are speakers made to work with the factory amp, plug and play, not even cutting a single wire, with the proper ohm loads.