See also:

Safety
The 2012 M-Class was deemed a Top Safety Pick by the Insurance Institute for Highway Safety, meaning it received the top score of Good in front- and side-impact crash tests, as well as for roof st ...

Changing the battery
You require a CR 2025 3 V cell battery. Take the mechanical key out of the SmartKey. Press mechanical key 2 into the opening in the SmartKey in the direction of the arrow until battery t ...

Resetting
Reset the sliding sunroof if it does not move smoothly. •► Turn the SmartKey to position 2 in the ignition lock. •► Raise the sliding sunroof fully at the rear. •► Keep the s ...