Parking assist back proximity sensors stopped working

Parking assist back proximity sensors stopped working

My wife just got back home and the parking sensors are not detecting anything. They can detect the vehicles next to ours but nothing on the back. We already rebooted both screens because earlier the main screen was not responding, but now the rear sensors are not nothing. Any ideas? | January 12, 2019

Possibly a fuse, but sounds more like the module that processes the rear sensors has died. Sounds like a service call will be necessary. Let us know what you find out.

jflores1312 | January 12, 2019

Will do. Thanks for the reply

sr.smr | January 13, 2019

I thought the rear sensors failed because I did not see any cars behind me on the screen above the steering wheel. Cars were detected on the sides and front. So I parked, put the car in reverse and had a friend walk around the rear bumper and noticed the red warning indicators moved in the direction my friend was walking around the car. Then I did a second reboot and for some odd reason I starting seeing cars behind me again. I'll keep an eye on it in the meantime. By the way, the sensors are a little bit dirty so maybe that has something to do with it.

murphyS90D | January 14, 2019

The sensors are ultrasonic. They send out a sound pulse and measure the time until a reflection is received. Dirt would affect their operation since it would reduce the signal strength in both directions.

PrescottRichard | January 14, 2019

Are all the models using the same parking sensor tech? I thought cars after 2014 or so used their LIDAR (is that right?) or something else.

Still, whichever tech they use Murphy makes a good point. Also- When in doubt- reboot. | January 14, 2019

No LIDAR in any Tesla (not sure LIDAR is in any production car yet from any maker as LIDAR is still super expensive).

With AP2, the ultrasonic sensors provide increased range, up to 30 feet, where AP1 could only detect up to 15 feet. For parking, it doesn't go out to the full range and is limited by software to something like 5 feet on all cars so it's not constantly alerting. Longer range is used as part of AP operations and summon.

PrescottRichard | January 14, 2019

Thanks TT, knew there was a difference but wasn’t sure what kind of difference.