Mercedes Benz C-Class (W204) 2007 - 2014 Training Manual: Open luggage compartment

Use the emergency key if the trunk can no longer be unlocked with the key or KEYLESS-GO.

Note: The anti-theft alarm signal is triggered if you unlock the trunk with the emergency key.

There are several options to stop the alarm:

Press the button or on the key or
Insert the key in the ignition lock or
Press the KEYLESS-GO button
Turn the emergency key up to the stop on the left to position 2.
The trunk will automatically open.
Turn the emergency key back to position 1 and remove it.

Legend

Trunk lock

Mercedes Benz C-Class. Emergency Operations

Mercedes-Benz C-Class (W205) 2015 - 2021 Owners Manual > Seat belts: Fastening and adjusting the seat belts
If the seat belt is pulled quickly or sharply, the seat belt retractor locks. The seat belt strap cannot be pulled out any further. Always engage seat belt tongue 2 of the seat belt into seat belt buckle 1 of the corresponding seat. Press and hold the seat belt outlet release and slide seat belt out ...