Courtesy Lamp: Description and Operation
FUNCTIONAL DESCRIPTION
General
When the optional extra "interior light package" is installed, the interior lights are controlled by means of the central locking module II (ZVM II).
Operation
The interior lights can be switched by means of the interior light switch to "permanent light", "OFF" or "automatic" (control by the ZVM II).
Permanent light: Ground is applied directly to the LB lamps via the interior light switch
OFF: Interior light switch prevents the lamps being switched on by the module.
Automatic: The central locking module II switches ground to the lamps via a power transistor (in the module). The ON time is influenced by the door contacts, ignition switch position, central locking system, outer door handles and time sequences.
Automatic Mode
Switch-on conditions
- Doors open (door contact active).
- Turn ignition switch to position 0 (terminal R OFF) when terminal 58 (parking light) was switched on for at least 2 minutes beforehand.
- Raise outside door handle (terminal R OFF).
- Signal from crash sensor.
Switch-off conditions
Immediate switch-off:
- Doors closed and switch on ignition (terminal R or 15).
- Doors closed and lock vehicle.
Delayed switch-off:
- Doors open longer than 16 minutes.
- When LB switched on with outside door handle, deactivation after 8 seconds.
- Close doors, switch-off after 20 seconds.
- When interior lights activated by terminal R OFF and terminal 58 ON, switch-off after 16 seconds.
Door Handle Contact
The door handle contact is only installed in conjunction with the optional extra door lock heating. In addition, the function "interior lights via door handle contact" can be suppressed by coding (country-specific). *D* test procedure indicates whether the door handle contact has an influence on the interior lights.
Repeat Lockout
The interior lights can only be switched on 3 times within 16 minutes by way of the outer door handle. Further switch-on operations are ignored. The lockout is reset by opening and closing the driver's door.