Exterior lights, function - GF82.10-P-0003MCU

MODEL 451.3 /4 

The exterior lights comprise the following functions: 

• Standing lights actuation
  • Standing lights actuation
  • Light warning
• Driving lights actuation
  • Low beams
  • High beam and headlamp flasher
  • Daytime running lights (with code (K06) Daytime running lights)
  • Auto on/off driving lights (with code (V54) Rain/light sensor)
• Turn signal light actuation
  • Turn signaling
  • Hazard warning flashing
  • Hazard warning flashing when airbag deployed
• Ambient illumination actuation (with code (V54) Rain/light sensor)
• Stop lamp actuation
• Front fog lamp actuation (with code (V07) Front fog lamps (FFO))
• Backup lamp actuation

The SAM control unit (N10/10) is a subscriber in the Controller Area Network (data bus/CAN bus) (CAN) and the master control unit for the exterior lights and all flashing functions.

The following switches are read in directly by the SAM control unit:

• Combination switch (S4)
• Cockpit switch group (S6/1)
• Stop lamp switch (S9/1)

The following sensor is read in by the SAM control unit via the Local interconnect network, interior 1 (LIN B):

• Rain sensor / light sensor (B38) (with code (V54) Rain/light sensor)

The following information is read in and transmitted by the SAM control unit via CAN:

• Crash signal from the restraint systems control unit (N2/7)
• Feedback to the instrument cluster (A1)

The SAM control unit actuates the following components:

• Left front lamp unit (E1)
• Right front lamp unit (E2)
• Left taillamp (E3)
• Right taillamp (E4)
• Center high-mounted stop lamp (E21)
• Left additional turn signal lamp (E22/1)
• Right additional turn signal lamp (E22/2)
• Left license plate lamp (E19/1)
• Right license plate lamp (E19/2)
• Left front fog lamp (E5/1) (with code (V07) (Front fog lamps (FFO))
• Right front fog lamp (E5/2) (with code (V07) (Front fog lamps (FFO))

Front fog lamp actuation 

Function requirements 

• Standing lights or driving lights on
• Circuit 15 On

Function 

The request is made via the front fog lamps switch (S6/1s8) in the cockpit switch group and is read in by the SAM control unit, which actuates the front fog lamps.

The feedback is provided by the LED integrated in the front fog lamps switch.

Backup lamp actuation 

Function requirement 

• Circuit 15 On

Function 

The selector lever module control unit (N15/5) reads in the status of the integral backup light switch and actuates the left backup light (E3e3) and the right backup light (E4e3) when reverse gear is engaged.

	Exterior lights, location of components		GF82.10-P-0003-02MCU
	Block diagram of exterior lights		GF82.10-P-0003-03MCU
	Exterior lights wiring diagram		PE82.10-P-2000MCU
	Wiring diagram of brake lights and turn signal/hazard warning lights		PE82.10-P-2220MCU
	Standing light actuation, function		GF82.10-P-3000MCU
	Headlamp control, function		GF82.10-P-2009MCU
	Turn signal indicator actuation, function		GF82.10-P-3008MCU
	Stop lamp actuation, function		GF82.10-P-3010MCU
	Headlamp range adjustment (HRA) headlamp function		GF82.10-P-1001MCU
	Ambient illumination actuation function	For vehicles with code (V54) Rain/light sensor	GF82.10-P-2013MCU