it kinda sounds like a bad ground you should do a voltage drop test here is a video to show you how to do it if you dont know http://realfixesrealfast.com/realfixesr … sting.html
You willl need to find some wiring diagrams to help fix this one. I would start with the hazard switch seeing as that area seems to remedy this issue. I would be looking for some common grounds that may be sh
I can’t tell you how many times I’ve seen something like this after a body shop repair, they’re really good at making the outside look good but the fact is that they don’t get paid to repair anything electrical so normally they tape it up and ship it which is about the point it ends up in my bay. That said the ‘ground’ theory is a good one to start with as freshly painted surfaces do not conduct electricity well but in your case I’d also be looking at the lighting circuits because perhaps a wire or connector was crushed during the collision and was never repaired. Personally I’d be pulling up the wiring diagrams for the effected circuits and seeing if I could find areas of commonality for places to start looking such as any wiring or connectors that ran in the area of the collision. Sorry there’s no ‘magic bullet’ on this one, it’s more ‘like a box of chocolates’ unfortunately. You COULD take it back to the body shop if it hasn’t been too long but in my experience you’re probably better off taking it to a mechanic that specializes in electrical repair.