Initiating rain sensor

This function is used to adapt the rain sensor to the windshield. The initialization does not affect the low beam sensor's function.
Note:
Only perform an initiation if it is determined that a rain sensor is installed in the vehicle, this is verified in the function.
Test conditions:
Procedure:
  1. Start the function and follow the instructions in the program.
  2. Function complete.
If the initialization fails several times, the rain-/light-/sun-/steam sensor must be replaced.