Why Rain Disables Driver-Assist Sensors
Rain switches your driver-assist systems off on purpose, and knowing why keeps a stormy dashboard from rattling you.
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Cameras, Radar and Sensors
Behind every driver-assist feature sits a small network of eyes: a forward camera near the mirror, radar hidden in the grille, ultrasonic sensors in the bumpers, and sometimes corner radars too. Cameras, Radar and Sensors explains what each one does, where it lives on your car, and what blinds it. Rain, road salt, a stone chip, a cheap windshield, even a slightly bent bracket can be enough to trigger a fault. We show you how to spot which sensor is unhappy, what a blocked or misaligned sensor looks like from the driver seat, and which problems you can solve with a microfiber cloth versus which ones need a technician. Know the hardware and the warning lights stop being a mystery.
20 guides in this hub
Snow and Ice on ADAS Sensors
Winter warnings usually mean snow or ice is sitting on a sensor, not that anything expensive has broken.
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How Lidar Differs From Radar
Both measure distance by timing a reflection, but one uses radio waves and one uses lasers, and that changes everything.
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The Camera Behind Your Rearview Mirror
That small black box tucked behind your mirror is the eye behind most of your car's safety features.
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Corner Radar Sensors: What They Do
The sensors tucked in your rear bumper corners are the reason your mirror lights up when a car sneaks up beside you.
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How ADAS Sensors Fail Over Time
Cameras and radar rarely die overnight; they degrade in specific, predictable ways you can learn to spot.
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Front Grille Emblem and Hidden Radar
That shiny badge on your grille might be the one part of your car you must never replace with chrome.
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Cleaning ADAS Sensors the Right Way
A microfiber cloth and two minutes can fix more driver-assist complaints than most drivers realize.
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