Wiper rest heater, function - GF82.30-P-2003S

MODEL 215.### 1#, 220 

Interlinkage of components Illustrated on model 220 

Prerequisites for operation of wiper rest heater:

• Engine: ON

Function 

At outdoor temperatures below 5 °C the windshield is heated directly in the area where the wiper blades rest by the wiper rest heater (R2/10).

If the outdoor temperature increases to above 7°C the wiper rest heater is switched off.

Actuation of wiper rest heater (R2/10) 

When switch-on conditions are fulfilled the left front SAM control module (N10/6) actuates the wiper rest heater relay (K40/6kA) on the left front fuse and relay module (K40/6). The wiper rest heater relay (K40/6kA) then switches on circuit 30 to the wiper rest heater (R2/10).

Required data: 

• Outdoor temperature: 

  The outdoor temperature sensor (B14) is read in directly by the left front SAM control module (N10/6) to check the outdoor temperature.

• Status of circuit 61 (generator): 

  The status of c.61 is read in by the right front SAM control module (N10/7) and relayed to the left front SAM control module (N10/6) via the CAN bus (passenger compartment).

	Left signal-acquisition and actuation module (SAM), location/purpose/design/function		GF54.21-P-4101S
	Outdoor temperature sensor, location/purpose/design/function		GF83.57-P-2103S