Electrochromatic wing mirror error

[entscheidend 0]

Both sides of the 540i were damaged, so I repaced them both with brand new, autodipping, heated aspherical phase 2's.

Both installed and tested - passenger side works great, drivers made the glass turn yellow and doesnt dim out headlights from behind.

I then switched them around, this time the other glass went from dark blue to yellow and the one that was not working on the drivers side is now dark blue.

So the problem is not the actual glass's, where could I look to find why the drivers side is not dipping/working?

I have noticed the drivers side speaker (the intergrated one next to air vent at top of door) is not working, is there the control module for all this inside the door - should I look there first?