Feature · 2 min read
Rain-Sensing Wipers Explained
Adjust wiper speed automatically based on how hard it's raining.
What are Rain-Sensing Wipers?
Rain-sensing wipers turn themselves on, off and faster or slower depending on the amount of water on the windscreen — no need to fiddle with the stalk.
How do they work?
A small optical sensor behind the rear-view mirror bounces infrared light off the inside of the windscreen. Water on the outside scatters that light; the more scatter, the more rain, and the faster the wipers run.
What does it feel like?
A passing shower triggers a single sweep, then nothing. As the rain gets heavier, the wipers speed up smoothly all the way to full speed.
Benefits
- ✓One less thing to think about in changing weather
- ✓Smoother response than manual intermittent
- ✓Better visibility in sudden downpours
Limitations
Can over-react to spray from lorries or to washer fluid. The sensor must stay clean — a smear on the inside of the glass right behind the mirror will confuse it.
Heads up: Carautonomy is for general guidance only. Always check your vehicle handbook for model-specific details and limitations.