Headlight Switch Off Delay Function - GF82.10-P-2011KJ

MODEL 453.0/3/4 

Function requirements, general 

• No overvoltage or undervoltage
• Combination switch (S4) in "AUTO" position

Headlamp switch-off delay, general 

The headlamp switch-off delay is designed to facilitate reliable location of the vehicle in the dark.

Headlamp switch-off delay function sequence 

Depending on the version of front illumination, a distinction is made between:

• H4 halogen headlamps with LED light strip (code P25 (LED & sensor package))
• H4 halogen headlamps with single LED (standard equipment)

General function sequence 

The status of the combination switch is evaluated by the driver-side SAM control unit (N10/11) and transmitted by the latter over the interior CAN (CAN B) to the center SAM control unit (N10/10).

When the center SAM control unit receives the request "Release central locking" from the transmitter key, it actuates the following component for a duration of approx. t = 20 s. When a vehicle door is opened or closed, the function starts again for t = 20 s. The trunk lid is assessed as a vehicle door.

Headlamp switch-off delay (with code P25 (LED & sensor package))

• Left front ambient light (E1e23)
• Right front ambient light (E2e23)

Headlamp switch-off delay (without code P25 (LED & sensor package))

• Low beams indicator lamp (A1e67) in instrument cluster (A1) via interior CAN
• Left low beam (E1e2)
• Right low beam (E2e2)
• If an engine start (except model 453.091/391/491) or the status "Drivetrain operational, READY" (model 453.091/391/491) is detected within t = 20 s a switch is made from the headlamp switch-off delay to the auto on/off driving lights function.

More detailed information about the auto on/off driving lights can be found in the "driving lights control" function description.

	Electrical function schematic, headlamp switch- off delay (SWA)		PE82.10-P-2058-97BBA
	Overview of exterior lights system components		GF82.10-P-9998KJ