Functions and Operating Principles: Interference

Rain sensor might malfunction due to the interferences listed below.

1. Dust on the measuring surface and other surfaces on the light path (surface of light emitting diodes and photo diodes, fiber optics, bracket, and glass surface of windshield joint area) weakens the received light.
2. Movement of windshield and bracket
3. Movement of bracket due to vibration
4. Damaged wiper blade
   NOTE: When the integrated rain sensor does not operate or malfunctions, the driver should operate the wiper switch manually.