Brake light actuation, function - GF82.10-P-3010G

MODEL 463.306 /336 /346 as of model year 2011 /YoM 10 

MODEL 463.202 /222 /236 /237 as of model year 2009 /YoM 08 

MODEL 463.247 /248 /249 /254 up to 31.8.08 as of model year 2007 

MODEL 463.270 /271 /303 /340 /341 as of model year 2007 

Function requirements: 

• Circuit 15 On

Brake light actuation function sequence 

Operation of the service brake is detected by the brake light switch and read-in directly by the ESP control unit.

The ESP control unit then sends the "Brake light ON" request to the EZS control unit via the drive train CAN (CAN C). This routes the request via the interior CAN (CAN B) and it is then read in by the rear SAM. The "Brake light ON" request is then sent redundantly to the rear SAM via a direct line.

The rear SAM then actuates the brake lights and the center high-mounted brake lamp.

The request is also forwarded via the interior CAN to the trailer recognition control unit, which then actuates the brake lights on the trailer via the trailer hitch socket (13-pin).

For vehicles with a gasoline engine, operation of the service brake is also detected by the BAS release switch and read in directly by the ESP control unit. This signal is transmitted directly to the rear SAM.

	Component description for rear SAM control unit with fuse and relay module	N10/2	GF54.21-P-6030G
	Component description for trailer recognition control unit	N28/1 With code (Q55) Trailer hitch with reinforced low ball head	GF31.19-P-4050G
	Electronic ignition/starter switch control unit (EZS), component description	N73	GF80.57-P-6000G
	Brake light switch, component description	S9/1	GF42.10-P-2010G