Wiper/Washers For The Windshield/Rear Window/ Headlights
Rear window wiper and washer are only available on C30 and V50.
The windshield wipers are powered by a motor positioned under the cowl. There are also washer nozzles on the hood and bumper cover for cleaning the windshield and headlamps. For cars with five doors, there is also a wiper and washer nozzle for the rear windshield. The washer nozzles are connected to two different pump motors on the windshield washer reservoir at the front right of the engine compartment. One pump motor is for high-pressure cleaning of the headlamps. The other pump is for washing the front and rear windshields (5 door).
The windshield wipers are operated using the right-hand control stalk. There are three positions:
- intermittent
- low speed
- high speed.
The time between strokes for intermittent wiping is adjusted using a ring on the control stalk.
Pull the control stalk towards the steering wheel to clean the windshield. The washers for the headlamps are activated simultaneously.
The washers for the headlamps are activated in two short intervals. Then the washer for the windshield must be activated 5 times before a further two short headlamp washes take place. Alternatively the interval is 10 minutes. The headlamp washers are not activated if the level in the windshield washer reservoir is below 0.7 liters.
Push the control stalk away from the steering wheel to clean the rear windshield. There is a button at the end of the control stalk to control the rear wiper.
Information about the position of the control stalk is transmitted to the central electronic module (CEM) on the controller area network (CAN). The central electronic module (CEM) also receives a signal from the wiper motor if the wipers are in the park position.
The central electronic module (CEM) also monitors the windshield washer reservoir level via a level sensor in the reservoir. The switch in the level sensor closes if the level falls below 0.7 liters. A text message indicating that the windshield washer fluid needs to be topped up then lights in the driver information module (DIM).
The wiper motor module (WMM) is powered directly via a 30-supply.
The washer motor for the front and rear windshields is powered via directly connected relays which are on the central electronic module (CEM). The headlamp washers are supplied via a relay in the combined relay and fusebox in the engine compartment.
There are diagnostics for the wiper motor module (WMM) and the relays for the washer pump motors.