Mercedes Benz C-Class (W204) 2007 - 2014 Training Manual: Manually releasing the park pawl (vehicles with automatic transmissions)

In the case of an electrical malfunction, the selector lever can be manually released from the P position, e.g. if the vehicle is to be towed.

Firmly push down on the parking brake.
Press the selector lever cover 1 to the left and pull out from above.
Press the release 2 down and move the selector lever from the P position at the same time.
The selector lever can now be moved freely until it is again brought to "P" position.

Legend

Mercedes Benz C-Class. Emergency Operations

Mercedes-Benz C-Class (W205) 2015 - 2021 Owners Manual > System settings : Activating/deactivating PIN protection
Multimedia system: System → PIN Protection Setting the PIN Select Set PIN. Enter a four-digit PIN. Enter the four-digit PIN again. If both PINs match, PIN protection is active. Changing the PIN Requirements A current PIN must be set. Select Change Settings. Enter the current PIN. Select Change PIN ...