Washer nozzles/washer nozzle hose heater, function - GF82.35-P-3003GM

MODEL 164.1 as of model year 09/YoM 08 model refinement package with CODE (875) Heated windshield washer system 

MODEL 164.8, 251.0/1 as of model year 09/YoM 08 with CODE (875) Heated windshield washer system 

General function requirements 

• Circuit 61 ON

Washer nozzle/washer nozzle hose heater, general 

The washer nozzle heater and washer nozzle hose heater prevent the washer fluid from freezing in the washer nozzles and in the washer nozzle hose.

Function sequence for washer nozzle/washer nozzle hose heater 

The AAC [KLA] control and operating unit (N22) (without code (581) Comfort automatic air conditioning) or the Comfort AAC control and operating unit (N22/7) (with code (581) Comfort automatic air conditioning) records the outside temperature via the outside temperature indicator temperature sensor (B14).

This value is transmitted by the operating and control unit to the front SAM control unit (N10) via the interior CAN.

If the outside temperature is T < 5 °C, the

• Center washer nozzle heater (R2/1)
• Left heated windshield washer nozzle (R2/2)
• Right washer nozzle heater (R2/3)
• Washer nozzle hose heater (R2/11)

are switched on by the front SAM control unit.

If the outside temperature increases to T > 8 °C, the washer nozzle heater and the washer nozzle hose heater are switched off immediately by front SAM control unit.

	Electrical function diagram for washer nozzle/washer nozzle hose heater	Model 164	PE82.35-P-2052-97MAA
		Model 251	PE82.35-P-2052-97RAA
	Front SAM control unit, component description	N10	GF54.21-P-7010GM
	Automatic air conditioning control and operating unit, component description	N22 Without code (581) Comfort automatic air conditioning	GF83.40-P-3000GM
	Comfort automatic air conditioning control and operating unit, component description	N22/7 with code (581) Comfort automatic air conditioning	GF83.40-P-3010GM