What Causes Automatic Wiper Failure?

[OBrynlee]

Automatic wiper failure is typically caused by issues with the rain sensor. Here's an explanation of the related components: 1. System: The rain sensor is an infrared-band optical system consisting of an emitter component that sends out infrared light. When the windshield surface is dry, nearly 100% of the light gets reflected back, allowing the sensor to receive strong reflected signals. The system then interprets this as clear weather and keeps the wipers deactivated. 2. Function: Automatic rain-sensing wipers detect precipitation levels and automatically adjust wiping speed, eliminating manual adjustment. This hands-free operation continuously maintains optimal driver visibility, ensuring safer and more comfortable journeys while enhancing driving comfort and safety.