Releasing the electric parking brake automatically

The electric parking brake is released automatically when the following conditions are simultaneously fulfilled:
• the engine is running.
• the automatic transmission is in position D or R.
• the hood is closed.
• your seat belt is fastened.
• you depress the accelerator pedal.

If the automatic transmission is in position R, the trunk lid must be closed.

If your seat belt is not fastened, the following conditions must be fulfilled to automatically release the electric parking brake:
• the driver's door is closed.
• you shift out of P or you have previously driven faster than 3 km/h.
• you have shifted out of P or you have previously driven faster than 2 mph (3 km/h).

    See also:

    Safety systems
    Problem Possible causes/consequences and •► Solutions (USA only) (Canada only) The red brake system warning lamp comes on while the engine is running. A warning ...

    Problems with your vehicle
    If you should experience a problem with your vehicle, particularly one that you believe may affect its safe operation, we urge you to contact an authorized Mercedes-Benz Center immediately to h ...

    Trailer load/noseweight
    The trailer load/noseweight affects the gross weight of the vehicle. If a trailer is attached, the trailer load/noseweight is included in the load along with occupants and luggage. The trailer loa ...