Mercedes-Benz M-Class (W164)
Engines
Click the links below to see common problems specific to the engines available on this vehicle.
- Mercedes-Benz M113 (ML500 MY06-07)
- Mercedes-Benz M156 (ML63 AMG)
- Mercedes-Benz M272 (ML350)
- Mercedes-Benz M273 (ML500 MY08+, ML550)
- Mercedes-Benz OM642 (ML320 BlueTEC, ML320 CDI, ML350 BlueTEC)
Problems
All Vehicles
- Harsh downshifts from 2nd to 1st gear – may require a software upgrade and/or revised valve body
- Upper steering shaft bearing – causes snapping or groaning noises from steering column when turning
- Dashboard warnings about the suspension and brakes may be due to abrasion of the front wheel speed sensor wires
- Steering wheel buttons – may stop working because of an internal short circuit, requires a replacement steering wheel
- Door mirrors – may not fully open or retract due to a loose electrical connection or lack of lubrication
- Interior temperature may differ from the climate control system because the sun sensor needs to be adjusted
Certain Vehicles
- Vehicles with heated front seats: Signal acquisition module can fail
- Vehicles with Airmatic air suspension:
- Can experience miscellaneous hardware failures
- Wiring harness insulation can rub off and cause short-circuiting
- Vehicles with power liftgate: Liftgate may reverse directions when closing due to a loose bolt on the gas strut