Having trouble diagnosing a door switch problem on the rear hatch - hatch unlocks and locks but doesn't register as open so it auto locks it self if you unlock the car and open it, it doesn't trigger the lights either. the switch on the DS rear door triggers the lights so the power is fine to there, and I didn't see anything in the wiring that suggest that there is a short or bad wire from there back. has anyone had the rear switch fail?