How Many Sensors Does a Car Have?
A former calibration tech counts the sensors packed into a modern car, group by group, from engine to airbags.
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sensors
How Modern Driver-Assist Systems Work
The sensors, the individual features, and the honest limits of the helpers built into every new car, from someone who calibrated them.
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The Cameras and Radar Behind ADAS
The cameras, radar, and ultrasonic sensors behind every driver-assist feature, mapped out in plain English.
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ADAS Calibration: The Complete Guide
A former calibration technician maps out when ADAS calibration is needed, how it is done, and what a proper job should cost you.
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How Car Radar Sensors Work
A clear, hands-on explanation of the radar units that power adaptive cruise, automatic braking, and blind spot alerts.
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Ultrasonic Parking Sensors Explained
How the little round sensors in your bumpers judge distance with sound, and why they beep when nothing is there.
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Radar Sensor Behind the Bumper Guide
Your forward radar hides low behind the bumper skin, and knowing why explains half the warnings it throws.
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Blind Spot Radar Sensors, Explained
The amber mirror light comes from two small radar units in your rear bumper corners, and here is how they think.
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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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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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