See also:

Remote vehicle locking
If you forget to lock your vehicle but are no longer in the vicinity of the vehicle, it can be locked for you by the Mercedes-Benz Customer Assistance Center. The vehicle can be locked remotely ...

Steering wheel heating
Switching on/off The steering-wheel heating heats the leather areas of the steering wheel. ► Make sure that the SmartKey is in position 2 in the ignition lock. ► To switch on/off: ...

Vehicles with manual transmission
Shift to either first gear or reverse gear R. Turn the SmartKey to position 0 in the ignition lock and remove it. The immobilizer is activated. Apply the parking brake firmly. ...