This chapter contains information on the following subjects:
→ Indicator lamp
→ Description of the central locking system→ Locking and unlocking the vehicle from the outside
→ Locking and unlocking the vehicle from the inside→ 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.
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
Indicator lampA/C Refrigerant Low Pressure Switch -F73
Note
For switching pressures, removing and installing switches
and switch arrangement and version, see vehicle-specific
refrigerant circuit.
Refer to
→ Rep. Gr.87.
...
Cleaning wheels
First read and observe the introductory information
and safety warningsCleaning steel wheels
An industrial cleaner is needed to remove accumulated brake dust. Steel wheels
should therefore be cleaned regularly with a separate sponge.
Any damage to the paint on steel wheels should be touched u ...
Vents
Fig. 128 In the dash panel: vents
First read and observe the introductory information
and safety warnings The vents should be left
open to ensure that the vehicle interior is sufficiently heated, ventilated and
cooled.
Turn the relevant thumb wheel (magnified view) in the required ...