Interior illumination (IBL) function

P82.20-2990-12

1 Central locking system unlock request

2 Driver or front passenger door status

3 Rear-end door status (with model 451.3)

4 Rear-end door status (with model 451.4)

5 Actuation of interior lamp

E15/4 Front interior lamp

E15/4s1 Interior lamp switch

N10/10 SAM control unit

S17/8 Trunk lid rotary tumbler microswitch

S87/6 Right door rotary tumbler microswitch

S87/7 Left door rotary tumbler microswitch

S88/9 Rear-end door handle switch

A Transmitter key

Interior illumination (IBL) function

The interior illumination provides the illumination for the vehicle interior. The master control unit for this is the SAM control unit.

The following operations are possible

 Switching on and off manually

 Switching on automatically

 Automatic switch off

Switching on and off manually

 by operating the interior lamp switch

Switching on automatically

 when unlocking the vehicle via the transmitter key

 when opening the driver or front passenger door

 when opening the top rear-end door (with model 451.3)

 when opening the bottom rear-end door (with model 451.4)

 when an alarm is triggered (with code (V01) Anti-theft alarm system (FFO))

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 The interior lamp is only automatically switched on if the interior lamp switch has been pushed towards the rear.

Automatically switched on when the vehicle is unlocked using the transmitter key

The "unlock central locking system" request from the transmitter key is read in by the SAM control unit. The SAM control unit then actuates the interior lamp.

Automatically switched on when a door is opened

The opening of the driver or front passenger side door is detected by the respective door rotary tumbler microswitch.The SAM control unit reads in the door rotary tumbler microswitch signals DIRECTLY and then actuates the interior lamp.

Automatically switched on when the rear-end door is opened

The opening of the rear-end door is detected by the rear-end door handle switch (with model 451.4) or the trunk lid rotary tumbler microswitch (with model 451.3). The SAM control unit reads in the signals and then actuates the interior lamp.

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Automatically switched off after a door has been opened

 Immediately after circuit 15 On

 After 15 s with door closed and circuit 15 Off

 after 10 min if the door is open

Automatically switched off after locking/unlocking using the transmitter key

 With circuit 15 On

 12 s after locking

 30 s after unlocking if the doors remain closed