Recently had my rear tail lamp assembly in my 2017 CX5 replaced by a local mechanic (it was cracked and wouldn't pass inspection). I just noticed that the Rear Cross Traffic Alert has stopped working since it was replaced. Thinking he accidentally disconnected something or somehow blocked the sensor. Before I go back and ask him to fix that, I wanted to know for myself where the sensor is, and where the connection is (something I can easily fix?) I can't find anything in the manual other than how the RCTA works, and that it's connected to the rear BSM system. Anyone here know? Car is still under warranty but really don't want to go to the dealer since I didn't use them to replace the light (they wanted almost twice as much to replace)
TIA.
TIA.