Headlamp cleaning system, function - GF82.15-P-3000CE

MODEL 204.0/2 with CODE (600) Headlamp cleaning system as of model year 2009/YoM 08 

MODEL 204.3 with CODE (600) Headlamp cleaning system 

MODEL 204.9 with CODE (600) Headlamp cleaning system 

Function requirements, general 

• Low beam ON
• "Engine running" or "drive train operational" signal on

The low beams can be switched on by the auto on/off headlamps function, the daytime running lights function or manually. The front SAM control unit with fuse and relay module (N10/1) generates the "low beams ON" status corresponding to the pending request. The CDI control unit (N3/9) (with diesel engine) or the ME-SFI [ME] control unit (N3/10) (with gasoline engine) sends the "Engine running" or "Drivetrain ready" signal via chassis CAN (CAN E) to front SAM control unit.

Headlamp cleaning system, general 

The headlamp cleaning system cleans cover plates for the headlamps using a high-pressure water jet.

Any soiling is removed from the cover plates.

Function sequence for headlamp cleaning system 

If the low beams are switched on and the windshield washer system is activated for the tenth time, the cover plates for the headlamps are cleaned by the headlamp cleaning system.

Steering column tube module control unit (N80) reads in position of combination switch (S4) directly and sends this via chassis CAN to front SAM control unit. Front SAM control unit then actuates headlamp cleaning system pump (M5/2). The telescopic nozzles are extended and the washer fluid cleans the cover plates of the headlamps.

After ten more wash requests, headlamp cleaning system pump is actuated again.

The number of washing requests is recorded by a counter in the front SAM control unit.

An automatic counter reset occurs when the ten wash requests have been reached or manually by switching off circuit 15.

The electronic ignition lock control unit (N73) sends the status of circuit 15 to the front SAM control unit over the interior CAN (CAN B).

	Electrical system function schematic for headlamp cleaning system (HCS)		PE82.15-P-2050-97FAA
	Overview of system components, wiper system (WSA)		GF82.30-P-9997CE