The interior lights on mine didn't work either. Add no rear doors unlock and hatch unlock. Plus, the BC button didn't work either. Plus a battery drain on F60. Check for voltage drop on F60. All those symptoms were fixed with a replacement GMIII. My Foxwell 520Pro helped me eliminate switches and buttons by trying bidirectional control.

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'06 X5 3.0i - bought @143,123 miles (12/26/20)