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

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.

RepairPal Verified
Average mileage: 136,777 (60,000–226,000)
6 model years affected: 1998, 1999, 2000, 2001, more2002, 2003
18 people reported this problem
Get Your Car Fixed at a RepairPal Certified Shop.
We certify shops based on expertise, quality work, and verified customer reviews
Viewing 1 - 5 of 5 problem details
2002 Mercedes-Benz ML320 226,000 mi,
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
2001 Mercedes-Benz ML320 60,000 mi,
Some lights don't work.
2003 Mercedes-Benz ML320 145,000 mi,
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.
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..
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