Washer nozzles/washer nozzle hose heater, function

P82.35-2337-06

B14 Ambient temperature display temperature sensor

G2 Alternator

N10/1 Front SAM control unit with fuse and relay module

N73 DI control unit

R2/1 Washer nozzle heater

R2/11 Washer nozzle hose heater

CAN-B Controller area network bus class B (interior compartment) (CAN B)

Washer nozzles and washer nozzle hose heaters, function

The washer nozzle heaters (R2/1) and washer nozzle hose heaters (R2/11) are switched on automatically when:

 Circuit 61 on (engine: on) and

 an outside temperature of less than 5 °C is detected.

Switch off is accomplished automatically when:

 Circuit 61 off (engine: off) or

 an outside temperature greater than 8 °C is detected.

 If the values are missing or implausible (outside temperature, circuit 61) the washer nozzle heater (R2/1) and the

washer nozzle hose heater (R2/11) are not actuated.

Actuation of heating elements

The heating elements of the washer nozzle heater (R2/1) and the washer nozzle hose heater (R2/11) are switched in parallel.

The washer nozzle heater (R2/1) and the washer nozzle hose heater (R2/11) are actuated directly by the front SAM control unit with fuse and relay module (N10/1). In this case, the front SAM control unit with fuse and relay module (N10/1) switches term. 30 onto the heating elements.

Required data

 The outside temperature is recorded by the outside temperature indicator temperature sensor (B14). The front SAM control unit with fuse and relay module (N10/1) directly reads in the sensor.

 The status of circuit 61 of the alternator (G2) is read in directly by the front SAM control unit with fuse and relay module (N10/1).