Unlocking the driver's door (mechanical key)

If the vehicle can no longer be unlocked with the SmartKey, use the mechanical key.

If you use the mechanical key to unlock and open the driver's door, the anti-theft alarm system will be triggered.

the SmartKey. Take the mechanical key out of the SmartKey.
lock of the driver's door as far as it will go. Insert the mechanical key into the lock of the driver's door as far as it will go.

Turn the mechanical key

counterclockwise to position 1. Turn the mechanical key counterclockwise to position 1.
The door is unlocked.
remove it. Turn the mechanical key back and remove it.
SmartKey. Insert the mechanical key into the SmartKey.

    See also:

    Replacing the windshield wiper blades
    Removing the wiper blades Remove the SmartKey from the ignition lock or turn it to position 0 (KEYLESS-GO). Fold the wiper arm away from the windshield until it engages. Set the wiper blade ...

    Vehicle remote opening
    If you have unintentionally locked your vehicle (e.g. the SmartKey is still in the vehicle) and a replacement SmartKey is not available, the vehicle can be opened by a Mercedes-Benz Customer A ...

    Important safety notes
    WARNING When leaving the vehicle, always remove the SmartKey from the ignition lock. Always take the SmartKey with you and lock the vehicle. Do not leave children unsupervised in the vehicle ...