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 lampBattery Tester Charger Kit -GRX3000VAS- Troubleshooting
Sometimes the display shows the malfunction or the messages
based on the condition.
The following is a list of the most frequent displayed
messages together with suggested solutions.
Note
Refer to the Batt ...
Safety Precautions
General Safety Precautions
As per VBG 20, German industrial liability insurance
association.
Follow the instructions for the workplace. They should be
displayed in the workplace.
...
Indicator lamp in the vehicle key
Fig. 20 Indicator lamp in the vehicle
key
First read and observe the introductory information
and safety warnings
If a button on the vehicle key is pressed briefly, the indicator lamp (arrow)
flashes once. The lamp will flash several times if the button is pressed and held,
e.g. convenien ...