Automatic locking feature
The vehicle locks automatically when the ignition is switched on and the wheels of the vehicle are turning at a speed of more than 9 mph (15 km/h).
You could therefore be locked out when:
- the vehicle is being pushed.
- the vehicle is being towed.
- the vehicle is being tested on a dynamometer.

•► To deactivate: press and hold button 1 for about five seconds until a tone sounds.
•► To activate: press and hold button 2 for about five seconds until a tone sounds.
i If you press one of the two buttons and do not hear a tone, the relevant setting has already been selected.
You can also switch the automatic locking function on and off using the on-board computer
See also:
Important safety notes
Consult an authorized Mercedes-Benz Center if you require information on approved
and recommended tires and wheels for summer and winter operation. Advice on purchasing
and caring for tires is als ...
Cleaning the wheels
Do not use acidic wheel cleaning products
to remove brake dust. This could damage
wheel bolts and brake components.
Do not park the vehicle for an extended
period straight after clean ...
Important notes
In order to prevent the vehicle's battery from
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except for when the SmartKey is in position
2 in the i ...
