Various electrical problem may develop due to a failed "all activity module". Our technicians tell us that proper diagnoses is required to be sure any electrical faults are being caused by the failed module.
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EVERYTHING GOING HAYWIRED
The module simply quit and I was told it would be very expensive to fix so I didn't fix it.
Entire electronic panel lights up. Returned to local Mercedes Benz Dealership. It took two-weeks to resolve problem, and the final cost $4,800. Now the door locks rapidly goes up and down; the keyless entry no longer works. The estimated repair cost for this annoyance was quoted as $1,500. No thanks, I'll live with the noise.!
AC works some times so they jump wire it.now it stays on heat no matter where you put the swicth