Fig. 83 Windscreen wiper lever: setting the rain sensor Ⓐ
Fig. 84 Sensitive surface of the rain sensor
When the rain sensor is activated, it automatically controls the frequency of the wiper intervals, depending on the amount of rain . The sensitivity of the rain sensor can be adjusted manually. Manual wipe .
Push the lever to the desired position :
Adjusting the sensitivity of the rain sensor:
The rain sensor will remain active after the ignition is switched off and back on again and will function again if the windscreen wiper lever is in position ① and if the vehicle is travelling at speeds higher than approximately 16 km/h (10 mph).
Changes to the functioning of the rain sensor
Possible causes for faults and misinterpretations concerning the sensitive surface for the rain sensor could be:
WARNING
At regular intervals, clean the sensitive surface of the rain sensor and check the windscreen wiper blades for damage (arrow).
We recommend you use an alcohol-based glass cleaner to remove wax and polish.
Volkswagen Touran Service Manual. Wheel, Balancing on Stationary Balancing Machine
Before beginning balancing, the following requirements must
be fulfilled.
The tire pressure must be OK.
The tire profile must not be worn on one side. The tire
profile must be at least 4 mm.
...
Volkswagen Touran Service Manual. Working on Airbag System
WARNING
When working on the airbag system (pyrotechnic
components, Airbag Control Module -J234-, wiring), the
ground cable must be disconnected with the ignition
switched on.
...