Multiple Electrical failures (nav system, folding seats, mirrors, etc)

Hello, we have sienna limited 2006 and recently had some body work done on rear bumper after which multiple issues occurred. The list of issues: Nav system is totally blank, the folding seats got stuck in the folded position, mirrors cannot be adjusted with buttons, AC is not working... Mechanically car seems to run fine. Went to auto parts store to read any possible codes which didn't show any codes. Any input is greatly appreciated. Thank you.