See also:

Vehicle Overview
Mercedes-Benz’s conventionally styled luxury sport utility vehicle gained a larger 3.7-liter V-6 engine midway through the 2003 model year, which prompted the automaker to change the designation o ...

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 ...

Mechanical key
General notes 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 ...