General notes

If the vehicle can no longer be locked or unlocked with the SmartKey, use the mechanical key.

If you use the mechanical key to unlock and open the driver's door or the trunk lid/ tailgate, the anti-theft alarm system will be triggered.

There are several ways to turn off the alarm:

•► To turn the alarm off with the SmartKey: press the button or on the SmartKey. button on the SmartKey.
or
•► Insert the SmartKey into the ignition lock.
or
•► To deactivate the alarm with KEYLESSGO: press the Start/Stop button in the ignition lock. The SmartKey must be in the vehicle.
or
•► Lock or unlock the vehicle using KEYLESSGO.

The SmartKey must be outside the vehicle.

If you unlock the vehicle using the mechanical key, the fuel filler flap will not be unlocked automatically.

•► To unlock the fuel filler flap: insert the SmartKey in the ignition lock.

    See also:

    Loading guidelines
    WARNING Always fasten items being carried as securely as possible using fastening materials appropriate for the weight and size of the load. In an accident, during hard braking or sudden m ...

    Locking the vehicle (mechanical key)
    If the vehicle can no longer be locked with the SmartKey, use the mechanical key. Open the driver's door. Close the front-passenger door, the rear doors and the trunk lid. Press the locking ...

    Transfer case
    This section is only valid for vehicles with 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 ...