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

Model 217, 222 

Courtesy of MERCEDES-BENZ USA

Model 222 except CODE 640 (Dynamic SAE right-hand traffic LED headlamp) and except CODE 641 (Dynamic left-hand traffic LED headlamp) and except CODE 642 (Dynamic right-hand traffic LED headlamp) 

Courtesy of MERCEDES-BENZ USA

Model 222 as of 01.06.2017 with code 640 (Dynamic SAE right-hand traffic LED headlamp) or code 641 (Dynamic left-hand traffic LED headlamp) or code 642 (Dynamic right-hand traffic LED headlamp) 

Courtesy of MERCEDES-BENZ USA

Model 222 up to 31.05.2017 with code 640 (Dynamic SAE right-hand traffic LED headlamp) or code 641 (Dynamic left-hand traffic LED headlamp) or code 642 (Dynamic right-hand traffic LED headlamp) 

Courtesy of MERCEDES-BENZ USA

Model 217 

Function requirements, general 

• Circuit 30 ON

Exterior lights, general 

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

For active transport mode, rolling mode or production mode, several exterior lights functions are available to a limited extent only.

A differentiation is made between the following versions of the front lamp units in accordance with the vehicle equipment:

• LED version lamp unit (static) 

  (except CODE 640 (Dynamic SAE right-hand traffic LED headlamp) and except CODE 641 (Dynamic left-hand traffic LED headlamp) and except CODE 642 (Dynamic right-hand traffic LED headlamp))

• LED version lamp unit (dynamic) 

(with CODE 640 (Dynamic SAE right-hand traffic LED headlamp) or CODE 641 (Dynamic left-hand traffic LED headlamp) or CODE 642 (Dynamic right-hand traffic LED headlamp))

The exterior lights contain the following functions:

• Function sequence for thermal management of front lamp unit (with CODE 640 (Dynamic SAE right-hand traffic LED headlamp) or CODE 641 (Dynamic left-hand traffic LED headlamp) or CODE 642 (Dynamic right-hand traffic LED headlamp), model 217) 
• Function sequence for switching off the exterior lights 

Further functions are described in separate documents:

• Standing/parking lights actuation function 
  • Standing lights actuation
  • Lights on warning
  • Parking lamp actuation
• Headlamp control function 
  • Low beam actuation
  • High beam actuation (high beams, headlamp flasher)
  • Daytime running lamps actuation
  • Auto on/off driving lights (via rain/light sensor with additional functions or wiper activities)
• Intelligent Light System, function (with CODE 640 (Dynamic SAE right-hand traffic LED headlamp) or CODE 641 (Dynamic left-hand traffic LED headlamp) or CODE 642 (Dynamic right-hand traffic LED headlamp), model 217) 

• Cornering illumination
• Active curve illumination

• Active light distribution (motorway lights, extended fog light function) (with CODE 641 (Dynamic left-hand traffic LED headlamp) or CODE 642 (Dynamic right-hand traffic LED headlamp))

• Adaptive Highbeam Assist, function (with CODE 608 (Adaptive Highbeam Assist) or CODE 628 (Adaptive Highbeam Assist Plus)) 
  • Optical headlamp range adjustment
  • Automatic high beams
  • Partial high beam (with CODE 628 (Adaptive Highbeam Assist Plus))
• Fog light actuation, function (model 222, except CODE 460 (Canada version) or except CODE 494 (USA version), model 217) 
• Turn signal light actuation function 
  • Turn signaling (left turn signal, right turn signal, one-touch turn signaling)
  • Hazard warning flashing
• Brake lights actuation function 
• Backup light actuation function 
• Ambient illumination, function 
  • Headlamp switch-off delay (outer OFF delay time)
  • Locator lighting
• Substitute lamp control/emergency light actuation function 

Function sequence for thermal management of front lamp unit (with CODE 640 (Dynamic SAE right-hand traffic LED headlamp) or CODE 641 (Dynamic left-hand traffic LED headlamp) or CODE 642 (Dynamic right-hand traffic LED headlamp), model 217) 

The front lamp units have temperature sensors that are used to sense the heat development in the area of the actuated LEDs. If the LEDs or plastic housings of the front lamp units threaten to overheat as a consequence of high outside temperatures or high actuation currents, the actuation currents of the LEDs are reduced, thereby minimizing heat development.

For active ventilation, the following additional components are integrated into the front lamp units:

• Fan motor 1, front left lamp unit, actuated by left headlamp control unit
• Left front lamp unit fan motor 2, in model 217 and in model 222 up to 31.05.2017 actuated by left front LED exterior lighting actuation module, in model 222 as of 01.06.2017 actuated by left front lamp unit LED matrix control unit
• Fan motor 1, right front lamp unit, actuated by right headlamp control unit
• Right front lamp unit fan motor 2, in model 217 and in model 222 up to 31.05.2017 actuated by right front LED exterior lighting actuation module, in model 222 as of 01.06.2017 actuated by right front lamp unit LED matrix control unit

Both fan motors are always actuated in a front lamp unit. The fan motors are either actuated immediately or with a time delay, depending on the active light function. The active ventilation through actuation of the fan motors is used simultaneously for defrosting and de-icing the front lamp units at low outside temperatures.

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 because of the auto on/off driving lights, the daytime running lights (only in vehicles with code 498 (Japan version)) and LED version lamp unit (static) or manually via the exterior lights switch and are switched off with circuit 15 OFF if the engine was previously turned off and the vehicle speed is v < 3 km/h. The standing lights may be switched on because of the manually switched on low beams, the auto on/off driving lights, the daytime running lights (only on vehicles with code 498 (Japan version) and LED lamp unit (dynamic)) or manually via the exterior lights switch. If the driver door is opened with terminal 15R ON or if the driver door is closed when terminal 15C is switched off, the standing light is switched off.

As soon as the energy management detects that the starting capability of the engine is impaired, the standing light is switched off.

If the "Outer OFF delay function" is activated via the COMAND controller unit (model 217 up to 30.11.2017, model 222 up to 31.05.2017) or via the head unit (model 217 as of 01.12.2017, model 222 as of 01.06.2017), then this switches on automatically after the engine has been switched off. The standing light remains on for the configured period from the point at which the last door or the trunk was closed. The "Outer OFF delay time" function is described in the "Ambient illumination, function" document.

	Standing/parking lights actuation, function		GF82.10-P-3060LF
	Headlamp control, function	Model 222 as of model year 2018 with code 640 (SAE dynamic LED headlamps right-hand traffic) Model 222 as of model year 2018 with code 641 (Dynamic LED headlamps, left-hand traffic) Model 222 as of model year 2018 with code 642 (Dynamic LED headlamps, right-hand traffic)	GF82.10-P-2009LFM
		Model 217 Model 222 except code 640 (SAE dynamic LED headlamps, right-hand traffic) except code 641 (Dynamic LED headlamps, left-hand traffic) except code 642 (Dynamic LED headlamps, right-hand traffic) Model 222 up to model year 2018 with code 640 (SAE dynamic LED headlamps right-hand traffic) Model 222 up to model year 2018 with code 641 (Dynamic LED headlamps, left-hand traffic) Model 222 up to model year 2018 with code 642 (Dynamic LED headlamps, right-hand traffic)	GF82.10-P-2009LFA
	Function of Intelligent Light System	Model 222 as of model year 2018 with code 640 (SAE dynamic LED headlamps right-hand traffic) Model 222 as of model year 2018 with code 641 (Dynamic LED headlamps, left-hand traffic) Model 222 as of model year 2018 with code 642 (Dynamic LED headlamps, right-hand traffic)	GF82.10-P-3090LFM
		Model 217 Model 222 up to model year 2018 with code 640 (SAE dynamic LED headlamps right-hand traffic) Model 222 up to model year 2018 with code 641 (Dynamic LED headlamps, left-hand traffic) Model 222 up to model year 2018 with code 642 (Dynamic LED headlamps, right-hand traffic)	GF82.10-P-3090LF
	Function of Adaptive Highbeam Assist	Model 217, 222 with code 608 (Adaptive Highbeam Assist) Model 217, 222 with code 628 (Adaptive Highbeam Assist Plus)	GF82.10-P-3091LF
	Front fog light actuation, function	Model 217 Model 222 except code 460 (Canada version) except code 494 (US version)	GF82.10-P-3070LF
	Turn signal indicator actuation, function		GF82.10-P-3008LF
	Brake light actuation, function		GF82.10-P-3010LF
	Backup lamp actuation, function		GF82.10-P-3011LF
	Ambient illumination, function		GF82.10-P-2014LF
	Substitute lights and emergency lights actuation, function		GF82.10-P-3080LF