See also:

Notes on selecting, mounting and replacing tires
Only mount tires and wheels of the same type and make. Only mount tires of the correct size onto the wheels. After mounting new tires, run them in at moderate speeds for the first 60 miles ( ...

Transfer case
The vehicle has permanent 4-wheel drive (4MATIC). Power is always transmitted to both axles. Performance tests may only be carried out on a 2-axle dynamometer. The brake system or transfer ca ...

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 trigge ...