See also:

Adjusting the angle of the head restraints
WARNING   Vehicles with Rear Seat Entertainment System: When adjusting the head restraint, make sure your fingers do not become caught between the head restraint cushion and the monitor ...

Unlocking the driver's door (mechanical key)
If the vehicle can no longer be unlocked with the SmartKey, use the mechanical key. If you use the mechanical key to unlock and open the driver's door, the anti-theft alarm system will be trigg ...

Exterior
Measuring an inch shorter than the BMW X5 and 3.6 inches shorter than the RX 330, the four-door M-Class is 182.6 inches long overall and rides on a 111-inch wheelbase. At 71.7 inches tall, the M-C ...