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.
Car Problem Reports
Mercedes-Benz ML430 "All Activity Module" May Cause Multiple Electrical Malfunctions
Mercedes-Benz ML430 Problem
Average Mileage: 134,378 mi (98,000 mi - 170,756 mi)
Visitor, 2001 Mercedes-Benz ML430, 170,756 mi
EVERYTHING GOING HAYWIRED
The module simply quit and I was told it would be very expensive to fix so I didn't fix it.
Visitor, 1999 Mercedes-Benz ML430
AC works some times so they jump wire it.now it stays on heat no matter where you put the swicth