GF82.10-P-0003FL Exterior Lights, Function

GF82.10-P-0003FL Exterior Lights, Function
MODEL 212.0/ 2

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 system includes the following subfunctions:
^ Function sequence for on-board electrical system increase
^ Function sequence for switching off the exterior lights
Further subfunctions are described in separate documents:
^ Standing/parking lights actuation, function
^ Driving lights actuation, function
^ Additional functions for driving lights actuation, function (with code (615) Bi-xenon headlamp unit with integrated curve illumination or code (616) Bi-xenon headlamp unit with integrated asymmetrical curve illumination or code (621) Intelligent Light System (left-hand traffic) or code (622) Intelligent Light System (right-hand traffic))
^ Front fog light actuation, function
^ Turn signal light actuation, function
^ Brake lights actuation, function
^ Backup light actuation, function
^ Headlight switch off delay, function
^ Emergency light actuation, function

Function sequence for on-board electrical system increase
When the on-board electrical system voltage is decreased by the on-board electrical system management below the minimum voltage of a light function during normal driving operation, the front SAM control unit with fuse and relay module (N10/1) can suppress shutoff of the corresponding light function with the aid of the on- board electrical system increase. For this purpose, the front SAM control unit requests the minimum voltage necessary 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:
- Low beams actuation during darkness (without code (615) Bi-xenon headlamp unit with integrated curve illumination and without code (616) Bi-xenon headlamp unit with integrated asymmetrical curve illumination and without code (621) Intelligent Light System (left-hand traffic) and without code (622) Intelligent Light System (right-hand traffic))
- Backup light actuation
- Front fog lamp actuation (with code (498) Japan version or without code (615) Bi-xenon headlamp unit with integrated curve illumination and without code (616) Bi-xenon headlamp unit with integrated asymmetrical curve illumination and without code (621) Intelligent Light System (left-hand traffic) and without code (622) Intelligent Light System (right-hand traffic))
- Rear fog lamp actuation (model 212.0 except 212.077 up to 30.11.09, model 212.077, 212.2 and model 212.0 as of 1.12.09 without code (460) Canada version and without code (494) USA version)

Function sequence for switching off the exterior lights
Switching off the exterior lights prevents the on-board electrical system battery (G1) from being discharged by the active low beam and standing light actuation.
The low beams may be switched on because of the auto on/off headlamps, the daytime running lights or manually via the exterior lights switch (S1).
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 on due to the low beams having been manually switched on, due to the auto on/off headlamps or the daytime running lights, or they can be switched on manually via the exterior lights switch.
If the standing lights are activated due to the manual switching on the low beams, the auto on/off headlamps or the daytime running lights and the driver door is then opened with a circuit status of circuit 15C On, the standing lights are switched off.
If the standing lights were manually switched on (exterior lights switch set to the standing lights position) then on vehicles up to 31.5.11, they are not switched off.
In vehicles as of 1.6.11 the standing lights are switched off when the on-board electrical system management determines that the engine's starting capability is impaired through the discharged on- board electrical system battery.
If the "Ambient illumination" function has been activated via the instrument cluster (A1), it automatically switches itself on when the engine is turned off. The standing lights remain switched on for an adjustable time interval of no more than t = 60 s.
The "Ambient illumination" function is described in the "Headlamp switch-off delay (SWA) function" document.