Hello I have a 2013 xc90 and just had u-haul install a trailer hitch and lights. As I left I noticed the airbag notice on my dash. Any chance this is related?

 

quite possible they may have set a code if they disconnected the battery or unplugged a connector during the install. You'd need to get a shop to do a code scan to see whether they can simply clear the code or if the code points to a specific device. Note not all OBD2 scanners will read chassis codes so you may need to rent/borrow a fully featured unit from Autozone etc or go to a shop who can read/clear for you. If there's a true fault, the code will just reset and then you'll need a diagnosis.