Washer nozzles/washer nozzle hose heater, function

P82.35-2205-06

1 Ambient temperature

2 Engine running (circuit 61)

3 Washer fluid hose heater/washer nozzle heater

4 Terminal 15 ON

B14 Ambient temperature display temperature sensor

G2 Generator

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

N73 EIS control module

R2/1 Washer nozzle heater

R2/11 Washer nozzle hose heater

CAN B CAN class B

Washer nozzles and washer nozzle hose heaters, function

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

 Circuit 61 ON (engine running) and

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

Switch off is accomplished automatically when:

 Circuit 61 OFF (engine OFF) or

 an outside temperature of more than 8 °C is detected.

 In the event of no or implausible values (outside temperature, circuit 61) the heating elements are not actuated.

Actuation of heating elements

All heating elements for the washer nozzle heater (R2/1) and washer nozzle hose heater (R2/11) are connected in parallel.

The washer nozzle heater (R2/1) and washer nozzle hose heater (R2/11) are actuated directly by the front SAM control module with fuse and relay module (N10/1). During this process, the front SAM control module with fuse and relay module (N10/1) switches circuit 30 to the heating elements.

Required data

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

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