See also:

Unlocking the trunk (mechanical key
The trunk lid swings upwards when opened. Therefore, make sure that there is sufficient clearance above the trunk lid. If the trunk cannot be unlocked with the SmartKey or KEYLESS-GO, use th ...

Problems with the engine
Problem Possible causes/consequences and - Solutions The engine does not start. The starter motor can be heard.  - There is a malfunction in the engine electronics. ...

Utility
With all that power under the M-Class' hood, along with its sporty nature and comfortable cabin, it's easy to forget this is still an SUV. That means the M-Class better do a good job of hauling th ...