Wiper Switch: Notes

The wiper switch on the steering column stalk does not lock in position. It always returns to its start position after every operation. The button for the rain/lights/solar/condensation sensor also returns to its starting position after every operation. The wiper-stage switch does lock in position.

The following functions are switched on with the wiper switch on the steering column stalk:

• Automatic wipe with rain/lights/solar/condensation sensor
• Continuous wipe, stage 1
• Continuous wipe, stage 2
• Flick wipe
• Wash windscreen

The signals from the wiper switch on the steering column stalk are sent from the steering column switch cluster via the FlexRay to the central gateway module. From the central gateway module, the signal is transmitted to the junction box electronics via the KCAN2. The junction box electronics evaluates the signals and actuates the wiper motor via the LIN bus. The junction box electronics also monitor the wipe function via the LIN bus. To do so, the junction box electronics cyclically request the status of the wiper motor.