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 ML55 AMG "All Activity Module" May Cause Multiple Electrical Malfunctions
Mercedes-Benz ML55 AMG Problem
Visitor, 2001 Mercedes-Benz ML55 AMG, 120,000 mi
AAM caused automatical central locking, remote locking, and front fog lights to stop working. Cost $700 to replace AAM and get new keys programmed.