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 ...

Storing and maintaining the current speed
You can store the current speed if you are driving faster than 20 mph (30 km/h). Accelerate the vehicle to the desired speed. Briefly press the cruise control lever up 1 or down 2. Remove ...

Bead
The tire bead ensures that the tire sits securely on the wheel. There are several steel wires in the bead to prevent the tire from coming loose from the wheel rim. ...