I had a person back yo and cracked my tail light with their mirror. They bought me a new taillight but in the meantime water go inot the light and ruined the sensor. Another cost for that. Very expensive fix.
Took it to the dealer. they couldn’t get it to communicate so had to order a new sensor. The cost with labor for the sensor came to 852.00. I think they also included the two hours of trying to make the old sensor to work. It did get wet while waiting for the lens Maybe that ruined the sensor.