Actuate Rear Fog Light, Basic Function - GF82.10-P-1021A

Model all (CAR) 

Overview 

This document contains the following information:

• General 
• Function requirement 
• Function 

General 

The rear fog light identifies the rear area of the vehicle in poor weather conditions. The rear fog light is operated via the rear fog light button on the exterior lighting switch.

Function requirement 

• Low beam or daytime running lights on

Function 

The exterior lighting control unit (dependent on vehicle either the central signal acquisition and actuation module or the front signal acquisition and actuation module) actuates the rear fog light itself or requests its actuation. This takes place depending on the network architecture of the vehicle.

Vehicles with trailer hitch 

The rear fog light on the vehicle is not actuated during trailer operation. Instead, the rear fog light on the trailer is actuated. The exterior lighting control unit requests actuation of the rear fog light on the trailer. The trailer recognition control unit implements this request.

	Function schematics
	Function schematic, actuate rear fog light	Model 118 177 243 247	PF82 10-P-2514-97A
		Model 167Model 293	PE82.10-P-2514-97B
		Model 206, 232, 297	PE82.10-P-2514-97C
		Model 213, 238, 257, 290 as of model year 2021	PE82.10-P-2514-97D
		Model 223	PE82.10-P-2514-97E
	Control units
	Trailer recognition control unit, basic function	Model all (CAR) with code 550 (Trailer coupling)	GF31.19-P-9890A
	Basic function of signal acquisition and actuation module	Model 118, 177, 243, 247	GF54.21-P-9895A
	Basic function of signal acquisition and actuation module at front	Model 167, 206, 223, 293, 297 Model 213, 238, 257, 290 as of model year 2021	GF54.21-P-9896A
	Components
	Rear lamp unit, basic function		GF82.10-P-2004A
	Exterior lights switch, basic function		GF82.10-P-2022A