This chapter contains information on the following subjects:
→ Description of the central locking system
→ Locking and unlocking the vehicle from the outside→ Locking and unlocking the vehicle from the inside
→ Locking and unlocking the vehicle with→ SAFELOCK mechanism
→ Anti-theft alarm→ Interior monitoring system and anti-tow alarm
The central locking system will only work correctly when all doors and the tailgate are properly closed. The vehicle cannot be locked with the key if the driver door is open.
In vehicles with the Keyless Access locking and starting system, the vehicle can only be locked when the ignition has been switched off and the driver door is closed.
If the vehicle is unlocked and not used for a long time (e.g. in your own garage) the vehicle battery could discharge or the engine may not start.
Additional information and warnings:

WARNING
Description of the central locking systemLocking the front passenger door and rear doors manually
Fig. 210 In the end face of the right-hand
door: manual lock covered by a rubber seal
Fig. 211 Manually locking the vehicle with
the vehicle key
First read and observe the introductory information
and safety warningsThe front passenger door and the rear doors can be locked
manually. This ...
Charging refrigerant circuit using air conditioner service station
WARNING
High-voltage on high-voltage system. Danger of
electric shock on air conditioner compressor!
Models with a high-voltage system: now de-energise
the high-voltage system
...
Removing and installing rear side airbag crash sensor -G256-/-G257-
Removing
WARNING
Observe safety instructions for
pyrotechnic components → Chapter.
...