Exterior Lights Function - GF82.10-P-0003RD

Model 172.4 up to model year 2017 

Courtesy of MERCEDES-BENZ USA

Vehicles except CODE 615 (Bi-xenon headlamp with active curve lights) and except CODE 621 (Intelligent Light System (left-hand traffic)) and except CODE 622 (Intelligent Light System) 

Courtesy of MERCEDES-BENZ USA

Vehicles with CODE 615 (Bi-xenon headlamps with active curve lights) or CODE 621 (Intelligent Light System (left-hand traffic)) or CODE 622 (Intelligent Light System) 

Function requirements, general 

• Terminal 30 ON

Exterior lights (ABL), general 

The exterior lights control all the safety and comfort-relevant functions of the front, side and rear lights of the vehicle.

The exterior lights system includes the following subfunctions:

• Function sequence, on-board network increase 
• Function sequence for switching off the exterior lights 

Further subfunctions are described in separate documents:

• Standing/parking lights actuation function 
• Headlamp control function 
• Intelligent Light System, function (with code 615 (Bi-xenon headlamps with active curve lights) or code 621 (Intelligent Light System (left-hand traffic)) or 622 (Intelligent Light System)) 
• Adaptive High Beam Assist, function (with CODE 608 (Adaptive High Beam Assist)) 
• Front fog light actuation, function 
• Turn signal light actuation function 
• Brake lights actuation function 
• Backup light actuation function 
• Headlight switch off delay function 
• Substitute lights/emergency light control function 

Function sequence, on-board network increase 

When the on-board electrical system voltage is decreased by the energy management below the minimum voltage of a light function during normal driving operation, the front SAM control unit can suppress shutoff of the corresponding light function with the aid of the on-board electrical system increase. To do so, the front SAM control unit requests the minimum voltage required for the corresponding light function. The light functions for which the on-board electrical system increase is activated can be defined at the end of production.

The following functions can be coded:

• Actuation of low beams in dark
• High-beams actuation
• Turn signal light actuation
• Backup light actuation
• Rear fog lights actuation

Function sequence for switching off the exterior lights 

By switching off the exterior lights, the on-board electrical system load by the active standing or parking lights actuation is reduced.

Discharge of the on-board electrical system battery (G1) is prevented.

The low beams may be switched on due to the auto on/off driving lights, the daytime running lights or manually via the exterior lights switch. A prerequisite for this is that the status of circuit 15 is On.

If circuit 15 is Off, the low beams are switched off.

The standing lights may be switched on because the low beams have been manually switched on, because of the auto on/off driving lights or manually via the exterior lights switch. If the standing lights have been switched on manually (exterior lights switch to the "Standing lights" position), the standing lights are not switched off.

If the standing lights have been activated because of the manually activated low beams, auto on/off driving lights or daytime running lights and the driver door is opened with the status circuit 15C On, the standing lights are switched off.

If the "Ambient illumination" function is activated via the instrument cluster, it automatically switches itself on when the engine is turned off. The low beams and the standing lights remain switched on for a fixed time interval of t = 60 s.

The ambient illumination function is described in the headlamp switch-off delay (SWA) subfunction.

	Standing/parking lights actuation, function		GF82.10-P-3060RD
	Headlamp control, function	Model 172.4 up to model year 2017 except code 615 (Bi-xenon headlamps with active light function) except code 621 (Intelligent Light System (left-hand traffic)) except code 622 (Intelligent Light System)	GF82.10-P-2009RD
		Model 172.4 up to model year 2017 with code 615 (Bi-xenon headlamps with active light function) with code 621 (Intelligent Light System (left-hand traffic)) with code 622 (Intelligent Light System)	GF82.10-P-2009RDA
	Function of Intelligent Light System	Model 172.4 up to model year 2017 with code 615 (Bi-xenon headlamps with active light function) with code 621 (Intelligent Light System (left-hand traffic)) with code 622 (Intelligent Light System)	GF82.10-P-3090RD
	Function of Adaptive High Beam Assist	Model 172.4 up to model year 2017 with code 608 (Adaptive High Beam Assist)	GF82.10-P-3091RD
	Front fog light actuation, function		GF82.10-P-3070RD
	Turn signal indicator actuation, function		GF82.10-P-3008RD
	Brake light actuation, function		GF82.10-P-3010RD
	Backup lamp actuation, function		GF82.10-P-3011RD
	Headlight switch off delay function		GF82.10-P-2011RD
	Substitute lights and emergency lights actuation, function		GF82.10-P-3080RD