(Exterior Lights Function - GF82.10-P-0003GR)

Model 166 

up to Model year 2016 

Courtesy of MERCEDES-BENZ USA

Vehicle except CODE 615 (Bi-xenon headlamp unit with integrated curve illumination) and except CODE 621 (Intelligent Light System (left-hand traffic)) and except CODE 622 (Intelligent Light System (right-hand traffic)) 

Courtesy of MERCEDES-BENZ USA

Vehicle with CODE 615 (Bi-xenon headlamp unit with integrated curve illumination) or CODE 621 (Intelligent Light System (left-hand traffic)) or CODE 622 (Intelligent Light System (right-hand traffic)), input signals 

Courtesy of MERCEDES-BENZ USA

Vehicle with CODE 615 (Bi-xenon headlamp unit with integrated curve illumination) or CODE 621 (Intelligent Light System (left-hand traffic)) or CODE 622 (Intelligent Light System (right-hand traffic)), output signals 

Function requirements, general 

• Circuit 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 comprise the following subfunctions:

• Function sequence for front lamp unit thermal management (with CODE 610 (Night View Assist)) 
• 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 
• Additional functions for driving lights actuation function (with CODE 615 (Bi-xenon headlamp unit with integrated curve illumination) or CODE 621 (Intelligent light system (left-hand traffic)) or CODE 622 (Intelligent light system (right-hand traffic))) 
• Turn signal light actuation, function 
• Brake lights actuation, function 
• Backup light actuation, function 
• Rear fog light actuation, function 
• Headlight switch off delay, function 
• Substitute lamp control/emergency light actuation function 

Function sequence for front lamp unit thermal management (with CODE 610 (Night View Assist)) 

The light functions for the parking, standing and turn signal lights as well as the cornering lights and infrared light are output via LEDs and controlled by the front actuation modules, LED exterior lighting.

To output the light functions of the parking, standing and turn signal lights, the SAM control unit actuates the front actuation modules, LED exterior lighting (circuit 58, circuit 49).

To output the light functions of the cornering lights and infrared light, the headlamp control unit actuates the front actuation modules, LED exterior lighting via headlamp LIN.

The front lamp units are each equipped with a temperature sensor for each light function, with which the heat development in the area of the actuated LEDs is recorded.

The front actuation modules, LED exterior lighting evaluate the signals of four temperature sensors each.

If the LEDs or the plastic housing of the front lamp units threaten to overheat as a consequence of high outside temperatures or high actuation currents, the front actuation modules, LED exterior lighting reduce the actuation currents for the LEDs and thereby lower the heat development.

In addition to this, the front actuation modules, LED exterior lighting actuate the following components to additionally cool the LEDs or plastic housings of the front lamp units:

• Fan motor 1, left front lamp unit, actuated by left front actuation module, LED exterior lighting
• Fan motor 1, right front lamp unit, actuated by right front actuation module, LED exterior lighting

The fan motors are actuated either immediately or with a delay depending on which particular light function is active.

The active ventilation by means of the fan motors is also used for defrosting and de-icing the front lamp units.

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 SAM control unit can suppress shutoff of the corresponding light function with the aid of the on-board electrical system increase. The SAM control unit requests the minimum voltage required for the corresponding light function for this. 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 light was manually switched on (exterior lights switch set to "standing light" position), it is switched off if the energy management determines that the engine starting capability has been impaired because the on-board electrical system battery has been discharged.

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 t = 60 s. The "Ambient illumination" function is described in the separate document "Headlamp switch-off delay (SWA) function".

	Standing/parking lights actuation, function		GF82.10-P-3060GR
	Headlamp control, function	Model 166 up to Model year 2016 without CODE 615 (Bi-xenon headlamp unit with integrated curve illumination) without CODE 621 (Intelligent Light System (left-hand traffic)) without CODE 622 (Intelligent Light System (right-hand traffic))	GF82.10-P-2009GR
		Model 166 up to Model year 2016 with CODE 615 (Bi-xenon headlamp unit with integrated curve illumination) Model 166 up to Model year 2016 with CODE 621 (Intelligent Light System (left-hand traffic)) Model 166 up to Model year 2016 with CODE 622 (Intelligent Light System (right-hand traffic))	GF82.10-P-2009GRA
	Additional functions for driving lights actuation, function	Model 166 up to Model year 2016 with CODE 608 (Adaptive Highbeam Assist) Model 166 up to Model year 2016 with CODE 615 (Bi-xenon headlamp unit with integrated curve illumination) Model 166 up to Model year 2016 with CODE 621 (Intelligent Light System (left-hand traffic)) Model 166 up to Model year 2016 with CODE 622 (Intelligent Light System (right-hand traffic))	GF82.10-P-3050GR
	Turn signal indicator actuation, function		GF82.10-P-3008GR
	Brake light actuation, function		GF82.10-P-3010GR
	Backup lamp actuation, function		GF82.10-P-3011GR
	Rear fog lamp actuation, function		GF82.10-P-3007GR
	Headlight switch off delay function		GF82.10-P-2011GR
	Substitute lights and emergency lights actuation, function		GF82.10-P-3080GR