I had my bodyshop respray my rear bumper due to some minor scratches. The bumper looks great but now the parking sensors do not work anymore. They've tried to fix it for two days, but can't figure out why they don't work.

Symptons: When I put the vehicle in reverse, I get a long beep from the rear then flashing lights on the sensor button switch. None of my sensors are working.

All the sensors are correctly connected. Is there a reset option they need to do?

Any help is greatly appreciated.

 

did the sensors get a fresh coat of paint??
were they sanded in prep for the new paint to adhere?
They might have been damaged during the respray or possibly another connector has come loose in behind the rear lights

 

The sensors were taking off for the respray. They checked all the connections and they are all properly reconnected. My only guess is that one of the sensors got damaged when they took them off the bumper.

Anybody else have a clue?

 

there has to be a way to test the sensors and the car side of the wire harness, I dont have that answer.\
Also FWIW the car side of the harness might have gotten damaged when the sensors were removed,
it might be a good idea to remove the rear lights and inspect it do the right side first

 

Hi, This is BigNige1, My TD6 Rangey has the same problem and I have had no work done to my bumpers, can anyone think of any other reasons this might happen ?

 

test the sensors with a Stethoscope you can hear them buzz