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Automatic interior lights control, function - GF82.20-P-2200CW

MODEL 204.0 /2 except CODE (414) Power glass tilting/sliding roof 

Function requirements for automatic interior lights control, general 

Automatic interior lights control, general 

The automatic interior lights control implements the actuation of all components of the interior illumination as well as the warning and exit illumination.

The corresponding requests are generated automatically. The master control unit for the automatic interior lights control is the front SAM control unit with fuse and relay module (N10/1).

The automatic interior lights control feature comprises the following subfunctions:

Additional function requirements for locator lighting 

Locator lighting function sequence 

The following signals are read in and evaluated by the front SAM control unit for controlling the locator lighting feature:

The overhead control panel electronics (N70/3) are supplied with power via the front SAM control unit.

The components for the locator lighting listed below are therefore actuated indirectly by the front SAM control unit:

Furthermore, the front SAM control unit on vehicles with code (954) Avantgarde or code (955) Elegance actuates the following components in accordance with the set brightness value for the symbol illumination:

If the function is requested by unlocking the central locking, all the lamps are switched off after t = 40 s or immediately, if the vehicle is locked again within t = 3 s of unlocking it. If the function is requested by intentionally leaving the vehicle, all the lamps are switched off after t = 15 s. The duration of the OFF delay time is adjustable and is supplied to the front SAM control unit by the instrument cluster (A1) via the interior CAN.

Additional function requirements for warning and exit illumination 

Function sequence for warning and exit illumination 

The following signals are read in and evaluated by the front SAM control unit for controlling the warning and exit illumination:

The front SAM control unit transmits the request to switch on the warning and exit illumination as well as the interior illumination via the interior CAN to the following control units:

The following components of the warning and exit illumination are actuated directly according to the door status:

The following components of the interior illumination are actuated indirectly through the power supply for the overhead control panel electronics via the front SAM control unit corresponding to the status of the interior lamp automatic function switch (N70/3s3):

Furthermore, all the footwell lamps are actuated by the front SAM control unit at a brightness value of 100 %.

If all the vehicle doors are closed again and the circuit status circuit 15 On has been supplied by the electronic ignition lock control unit on the interior CAN, then the interior lights are switched off.

The footwell lamps are then actuated again at the set brightness value for the symbol illumination.

IMPORTANT To preserve the on-board electrical system battery (G1), with circuit 15 Off all the activated lamps are switched off after t = 5 min when a vehicle door is open and t = 8 s after the closing of the last vehicle door.

Additional function requirements for load compartment illumination 

Function sequence for load compartment illumination 

The following signal is read in and evaluated by the front SAM control unit for controlling the load compartment illumination:

The front SAM control unit transmits the request to switch on the load compartment illumination via the interior CAN to the rear SAM control unit, which then actuates the following components of the load compartment illumination:

IMPORTANT To preserve the on-board electrical system battery, the ambient lamps and the trunk lamps are switched off t = 10 min after the trunk lid or liftgate was opened.

The status of the front doors is supplied to the rear SAM control unit by the front door control units and the current circuit 15 circuit status is supplied on the interior CAN by the electronic ignition lock control unit, so that the load compartment illumination can be activated again at the end of a journey with the trunk lid or liftgate open.

The ambient lamps and the trunk lamps are switched off after the trunk lid or the liftgate is closed.

Additional function requirements for interior illumination with ATA [EDW] alarm 

Function sequence for interior illumination with ATA [EDW] alarm 

The rear SAM control unit transmits the "ATA [EDW] alarm triggered" signal via interior CAN to the front SAM control unit. The following components of the interior illumination are actuated indirectly by the front SAM control unit through the power supply for the overhead control panel electronics:

Furthermore, the front SAM control unit actuates the footwell illumination.

Additional function requirements for interior illumination following an accident with airbag deployment 

Function sequence for interior illumination following an accident with airbag deployment 

The interior illumination is actuated in order to provide better orientation for the occupants and the first aiders following an accident.

The supplemental restraint system control unit places the "Crash event" information on the chassis CAN. The front SAM control unit receives this information and evaluates it.

The overhead control panel electronics are supplied with power via the front SAM control unit. The components for the interior illumination listed below are therefore actuated indirectly by the front SAM control unit:

Furthermore, the front SAM control unit actuates the footwell illumination.

The interior illumination function following an accident with airbag deployment is deactivated under the following conditions:

  Instrument cluster, component description A1
Without code (442) Comfort multifunction steering wheel		 GF54.30-P-6000CWA
With code (442) Comfort multifunction steering wheel GF54.30-P-6000CWB
  Transmitter key, component description A8/1 GF80.57-P-6010CW
  Infrared remote control receiver, component description A26/1 GF80.30-P-6000CW
  Door lock, component description A85, A85/1, A85/3 and A85/4 GF80.20-P-4124CW
  Light sensor component description B38/1
Without code (345) Rain sensor		 GF54.21-P-6001CW
  Rain/light sensor, component description B38/2
With code (345) Rain sensor		 GF54.21-P-6000CW
  Trunk lid central locking motor, component description M14/7
Model 204.0		 GF80.20-P-4123CW
  Liftgate central locking motor, component description M14/7
Model 204.2		 GF80.20-P-4126CW
  Supplemental restraint system control unit, component description N2/10 GF91.60-P-4068CW
  Front SAM control unit with fuse and relay module, component description N10/1 GF54.21-P-6070CW
  Rear SAM control unit with fuse and relay module, component description N10/2 GF54.21-P-6030CW
  Left front door control unit, component description N69/1 GF72.29-P-6001CW
  Right front door control unit, component description N69/2 GF72.29-P-6009CW
  Rear door control unit, component description N69/3, N69/4 GF72.29-P-6021CW
  Electronic overhead control panel component description N70/3 GF82.20-P-5217CW 
  Upper control panel control unit, component description N72/1
With code (873) Left and right front seat heater,
with code (220) Parktronic system (PTS),
with code (540) Electric roller blind for rear window or
with code (483) ADVANCED AGILITY package		 GF54.21-P-6040CW
  Electronic ignition switch control unit, component description N73 GF80.57-P-6001CW
  Component description for the steering column module control unit N80 GF54.21-P-6051CW
  Exterior lights switch component description S1 GF82.10-P-4107CW 
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