Step 10: Final check
Engage the engine and check if all is working properly. To check the mirror, turn on the engine, cover the rear left side of the mirror on which the light sensor is located, and then press the button. It should be "black". Reverse and must be done as before. If you turn on the ceiling, it will have to be normal again.
To test the light sensor (if it is day), turn on the engine, turn the switch to AUTO and cover the point of the sensor with a dark object. The lights should light up
To control the rain sensor, put the windscreen wipers on an operating ladder and see if they stop after one turn or continue to move. They should now only work if the rain sensor detects drops of water. So, you drop water at the point where the sensor is located and must begin operating.
Also, via a vag-com cable, you can select "Meas. Blocks - 08" (located at 09- Cent. Elect) and dropping water on the sensor to see the values being changed.
To check the automatic closing of sunroofs in rain, lower the windows, open the sunroof, lock the car, wait for 2 minutes and pour water on the sensor. You must have the function activated via the display in front of the steering wheel.
Take a ride on the car so the brain can understand that there is no problem and the bugs will be erased on their own.