Switch dome lamps on/off, function - GF82.20-P-2033T

MODELS 211.0/2/6

Networking of components

Fig 1: Networking Of Switch Dome Lamps ON/OFF Components

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Switching on and off manually

Via the dome lamp ON and OFF switch (N70s4) in the overhead control panel control unit (N70), the front dome lamp (N70e1) is switched on dimmed.

Switching-off dimmed is effected by resetting this switch or to preserve the battery capacity automatically 30 minutes after the data bus rests.

Prerequisite for the 1st automatic function:

Automatic driving light actuation is switched on via the instrument cluster (A1).
The door contact ON and OFF switch (N70s3) is switched on.
The rain/light sensor (B38/2) has recognized "night".

Prerequisite for the 2nd automatic function:

Automatic driving light actuation is switched off via the instrument cluster (A1).
The door contact ON and OFF switch (N70s3) is switched on.

If the lamp is switched on manually, no automatic functions can be carried out.

Automatic functions for the dome lamp:

By opening a door, the front dome lamp (N70e1) is switched on dimmed.

Switching off is effected by "circuit 15 ON" dimmed and immediately after closing the last door or automatically 30 minutes after opening the last front door. Likewise switching off is effected by "circuit 15 OFF" dimmed after 8 seconds after closing the last door, or automatically 5 minutes after opening the last door.

If the vehicle is unlocked, the dome lamp is switched on dimmed. Switching-off is effected dimmed 30 seconds after unlocking. After removing the transmitter key (A8/1), the front dome lamp (N70e1) is switched on dimmed.

Switching off is effected automatically after the OFF delay time of the interior light adjusted in the instrument cluster (A1).

Provision for adjustment of the OFF delay time is from 0 to 20 seconds in a 5 second cycle.

If "circuit 15" is switched on while an automatic light function is active, then the dome lamp is automatically switched off dimmed. If there is a change to the requirements (position of door contact on/off switch or light sensor information) during an automatic function, this change is immediately taken into account.

ATA alarm

In the event of an ATA alarm the lamp is switched on immediately without dimming.

Actuation

The lamp is actuated internally in the overhead control panel control unit (N70), in which the front dome lamp (N70e1) and the dome lamp ON and OFF switch (N70s4) are integrated.

The overhead control panel control unit (N70) receives the following information on this:

The brightness, the rain/light sensor (B38/2) is read in directly by the overhead control panel control unit (N70).
The status of the left front door contact switch (S17/3) and right front door contact switch (S17/4); these are read in directly from the rear SAM control unit with fuse and relay module (N10/2) and passed on via the interior CAN.
The adjusted OFF delay time of the interior light; it is passed on from the instrument cluster (A1) via the interior CAN to the overhead control panel control unit (N70).

If an undervoltage or overvoltage exists, the lamp is switched off immediately without dimming. As soon as the correct voltage is restored, the lamp is switched on without dimming.

If an ATA alarm is triggered, the lamp is not switched off.

In Model 211.6, depending on equipment and special body, the number and position of the interior lamps may vary.

Interior lighting dimming, function	GF82.20-P-3002T
Exterior light-dependent control of interior lighting, function	GF82.20-P-3003T