Rain sensor function test
| WARNING | Danger of crushing or trapping with wipers running! |
> Make sure the wipers are switched on when performing this test.
1. Lock the vehicle and unlock it again.
2. Switch on the ignition and set the pot. on the wiper switch for the windscreen wiper to the lowest position.
3. Set the wiper switch to position 1 and then move the pot. one position higher on each occasion. Actuation of the rain sensor is confirmed by one wiping stroke.
4. Switch the ignition on and put the wiper switch in position 1, moisten your finger with water, and move it over the area of the rain sensor on the outside of the windscreen. The wiper switches on.
5. Connect Porsche System Tester. Select the Wiper menu and read out fault memory.