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How Does My Windshield Know It’s Raining?
Jun 21, 2018

How does my windshield know it’s raining?

 

Your car’s sensors can tell it is raining by measuring how many rain drops are on the windshield. The sensor detects the light reflected back internally by the windshield glass, so if there were more raindrops on the windshield, the less light would be reflected back to the sensor.

Here’s how your car windshield rain sensors work: The vehicle senses how much rain is on the windshield, speeding up the windshield wipers according to the amount of rain it detects. The sensor itself is mounted on a special bracket behind the vehicle’s rearview mirror and wired through the roof. 

What happens when your windshield experiences a chip or crack and needs repair? If the rain sensor is intact when you’re receiving auto glass services, be sure to tell your auto glass specialist so they can reattach it when replacing the windshield.

How does my windshield know it’s raining?How does my windshield know it’s raining?How does my windshield know it’s raining?




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