Rolling with the engine switched off

There is no power assistance for the steering WARNING
There is no power assistance for the steering and the brake when the engine is not running.
Steering and braking requires significantly more effort and you could lose control of the vehicle and cause an accident as a result.
Do not turn off the engine while the vehicle is in motion.

    See also:

    Override feature for the rear side windows
    WARNING When children ride on the vehicle's rear seats, activate the override switch. Otherwise, the children could be injured, e.g. by trapping themselves in the rear side window. ...

    Towing a vehicle with both axles onthe ground
    When having your vehicle towed, observe the important safety notes. WARNING   The power assistance for the steering and the brake force booster do not work when the engine is not runnin ...

    Snow chains
    For safety reasons, Mercedes-Benz recommends that you only use snow chains which have been specially approved for your vehicle by Mercedes-Benz, or are of a corresponding standard of quality. ...