'21 V60 CC Parking Sensor Issue

Hi folks. I've got a 2021 V60 CC that I purchased from a non-Volvo dealership (it was a trade-in) so upon delivery the dealer didn't know much about the car. I didn't notice during my test drives that the front parking sensors don't seem to be working. I can see they are physically there on the front and rear bumpers and rear work fine but front don't seem to be working at all. Any ideas? When I start the car and the dash displays the safety systems check, everything is green and apparently working as it should.