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Ultrasonic Sensor

5.1K views 2 replies 2 participants last post by  ccollins.krvv  
#1 ·
For days, I've gotten the warning that my ultrasonic sensor has failed and driver safety functions are disabled.

Adaptive cruise works, and when it shows the car in overhead, it has an x on the front right sensor.

I'll take it into service, but just seems odd. Not sun or snow, as it happens in the dark too.

Outside the sensor looks fine. I cleaned them all and the windshield, as I thought the ultrasonic was behind the mirror.

Anyone else have failed sensors that triggered this. The only issue it gives me is that it doesn't beep for front proximity.
 
#2 ·
Yeah, stuff just breaks occasionally :)

The sensor hind the mirror is visual based. The ultrasonic sensors are audio based (i.e. "ultrasonic ") and are the 1/2" "dots" you see on the bumper. Being ultrasonic, they are not affected by sunlight, and not much by rain. Snow buildup could cause issues, though.