Mercedes-Benz ML320 Problems

"All Activity Module" May Cause Multiple Electrical Malfunctions on Mercedes-Benz ML320

Problem Description and Possible Solution

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.

(20 people reported this problem)

Mercedes-Benz ML320 Vehicles With This Problem

RepairPal Verified
Average mileage: 136,777 (60,000–226,000)
6 model years affected: 1998, 1999, 2000, 2001, more2002, 2003
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Viewing 1-6 of 6 comments
All power is lost due to all activity module failure. Alternator fails to recharge battery and engine will not crank without an alternate power source
All of the gauges go down and if I don't take foot off gas all the lights turn on the dash starting from left to right. I haven't had it diagnosed yet. If I keep foot on gas the car will stall. It will restart fine. I'm not sure what is causing this.
my breaklight bulbs are constantly burning out, the door locks are going up and down, constantly replacing light swith ESP/bas, problems with crankshaft position
I kinda think that might be a reference to what my problem is we're kind of the same thing all the gauges will just drop all the lights on the dashboard trun on but the motor keeps running and it keeps driving but if it has to change gears that doesn't happen and basically you have to cut it off and turn it back on for the resume normal function..