Heating wiper support, function - GF82.30-P-2003LA

MODEL 216.3, 221.0/1 as of model year 09/YoM 08

Function requirements, general

Circuit 61 ON
Outside temperature T < 5 °C

Heated wiper park position, general

The wiper park position heater is used to ensure that the wiper blades are not frozen onto the windshield.

Heated wiper park position function sequence

With the engine running (circuit 61 On) and at an outside temperature of T < 5 °C the wiper park position heater (R2/10) is switched on by the front SAM control unit with fuse and relay module (N10/1) via the wiper park position heater relay (N10/1kK).

The wiper park position heater is switched off automatically if one of the conditions below is met:

Wiper system is not operated within t = 25 min. at a coolant temperature of T < 70 °C
Wiper system is not operated within t = 15 min. at a coolant temperature of T > 70 °C
Wiper system is not operated within t = 10 min. when the vehicle is at a standstill

The coolant temperature is recorded by the coolant temperature sensor (B11/4). The CDI control unit (N3/9) (for diesel engine) or the ME-SFI [ME] control unit (N3/10) (for gasoline engine) records this signal and places the current value on the chassis CAN. The central gateway control unit (N93) routes the signal from the chassis CAN to the interior CAN, where it is then read in by the front SAM control unit.

The outside temperature is read in via the outside temperature indicator temperature sensor (B14) directly by the front SAM control unit.

Electrical function schematic for heated wiper park position	Model 216	PE82.35-P-2053-97CAA
Component description for CDI control unit	N3/9 Model 221 with engine 629.9	GF07.16-P-6000OA
Component description for CDI control unit	Model 221 with engine 642.9	GF07.16-P-6000OHL
ME-SFI [ME] control unit, component description	N3/10 On engine 156	GF07.61-P-6000MAS
	On engine 272 (model 221)	GF07.61-P-6000MIS
	On engine 273	GF07.61-P-6000MLS
	On engine 275	GF07.61-P-6000MOS
Front SAM control unit with fuse and relay module, component description	N10/1	GF54.21-P-6070LE
Central gateway control unit, component description	N93	GF54.21-P-4170LE