Windshield intermittent wiping, function - GF82.30-P-3003PP

WARNING: This page does not describe the selected car, but rather 25 other vehicles, including the 2007 Mercedes-Benz C350, 2007 Mercedes-Benz C280, 2007 Mercedes-Benz C230, 2006 Mercedes-Benz C55, and 2006 Mercedes-Benz C350. However, it is still accessible from the selected car via links, so may be relevant.

MODELS 203.0 /2 /7 up to 23.4.04

Fig 1: Windshield Intermittent Wiping Function Diagram - Models 203.0 /2 /7 Up To 23.4.04

Shown on rain sensor (B38) up to 31.5.03

Function prerequisites:

Circuit 15R ON
Engine hood and front doors closed

Operating procedure

The intermittent wiping function can be switched on by turning the combination switch (S4) to position "I".
The position of the combination switch (S4) is read by the EIS control unit (N73) or the steering column module (N80) and is relayed as a message to the CAN-B.
The front SAM control unit with fuse and relay module (N10/1) receives this message and triggers a wiping cycle (if the wipers were already in motion, this wiping operation is first completed).
After a wiping cycle the wiper motor (M6/1) is braked.
The intermittent pause is started.
After expiration, the intermittent pause of the next wiping operation is started.

Control of wiper motor

The front SAM control unit with fuse and relay module (N10/1) actuates the wiper motor (M6/1) via the wiper stage 1 and 2 relay (N10/1kL) and the wiper ON/OFF relay (N10/1kQ) so that the wipers are operating in speed 1.

Interruption of intermittent pause

If another wiper function is requested during an intermittent pause, this function is executed without taking the intermittent pause into consideration. After completion of this function, the intermittent pause is started again.

Intermittent pause function on vehicles without code (345a) rain sensor

Regardless of the wetting degree the intermittent pause time is approx. 5 s

Intermittent pause function on vehicles with code (345a) rain sensor

The intermittent pause is dependent on the degree of wetting of the windshield. In order to achieve this, the front SAM control unit with fuse and relay module (N10/1) evaluates the data from the rain sensor (B38) or the rain/light sensor (B38/2).

The data exchange between the front SAM control unit with fuse and relay module (N10/1) and the rain sensor (B38) or the rain/light sensor (B38/2) takes place via the CAN-B. The overhead control panel control unit (N70) serves as interface.

If the rain sensor (B38) or the rain/light sensor (B38/2) fail, then the intermittent time is set to approx. 5 s.

Slowing down wiper motor, function		GF82.30-P-4007PP
Anti-block device for wiper motor, function		GF82.30-P-4008PP
Combination switch, location/task/design/ function		GF82.30-P-2100PP
Wiper motor, location/task/design/function		GF82.30-P-4104PP
Rain sensor, location/task/design/function	On vehicles with code (345a) rain sensor up to 31.5.03	GF82.30-P-4103S
Rain/light sensor location/task/function	On vehicles with code 345a rain sensor as of 6/1/03	GF54.21-P-4123PQ
Electronic ignition switch control unit, location/ task/design/function		GF80.57-P-4102PP
Steering column module location/task	On vehicles as of 1.7.02	GF54.21-P-4125Q
Overhead control panel control unit, location/ task/design		GF82.20-P-4110A
Front SAM control unit with fuse and relay module location/task/design		GF54.21-P-4108PP