SmartKey

See also:

Safety
As it should be, the M-Class is full of standard safety features like an electronic stability system, antilock brakes, traction control, side curtain airbags, and side-impact airbags for the front ...

Important safety notes
Do not leave the SmartKey in the trunk. You could otherwise lock yourself out. WARNING When leaving the vehicle, always remove the SmartKey from the ignition lock. Always take the SmartKey w ...

Correct use of the seat belts
WARNING USE SEAT BELTS PROPERLY - Seat belts can only work when used properly. Never wear seat belts in any other way than as described in this section, as that could result in serious injuri ...