Wiper Switch: Description and Operation

GF82.30-P-5002MCC Wiper Switch, Component Description








S4/4 Right wiper switch

Location
The wiper switch is located on the steering column.

Task
The wiper switch is used to activate the following requests:
Windshield
^ Wipe at slow speed
^ Wipe at fast speed
^ Wipe with washer fluid
^ Intermittent wipe

Rear window (with model 451.3)
^ Intermittent wipe
^ Wipe with washer fluid

The windshield washer fluid pump (M5/1) is actuated directly via the wiper switch.

Operation of individual functions (windshield) Wipe
Pressing the wiper switch upwards beyond the first catch point activates a wipe at a slow speed.
Pressing the wiper switch upwards beyond the second catch point activates a wipe at a faster speed.

Wipe with washer fluid
Pulling the wiper switch backwards and holding it there directly actuates the windshield washer fluid pump. The position of the wiper switch is read in by the SAM control unit, which then actuates the wiper motor. After releasing the wiper switch, another 3 wipe cycles are performed.

Intermittent wipe
If the wiper switch is pressed downward beyond the catch point, the intermittent wipe is activated. The intermittent wipe is executed to match the vehicle speed or to match the amount of moisture on the windshield (with code (V54) Rain/light sensor).

Operation of individual functions (rear window) (on model 451.3) Intermittent wipe
If the wiper switch is pressed forward beyond the catch point, the intermittent wipe is activated for the rear window.

Wipe with washer fluid
Pressing the wiper switch forwards and holding it there directly actuates the windshield washer fluid pump.