I have a 2002 s60. I dont know if this has anything to do with it but I was recently in a wreck where someone hit me, they turned in front of me and it knocked out my headlight, dented my front bumper and the hood. The car was still driveable after but now all of a sudden the gas guage is not working, the fuel door wont open and the button to let the headrests down is not working as well. Any idea on what it could be? I live in a small town where no mechanics want to work on my car mostly because they don't know what they are doing. So any input would be helpful!

 

Start by checking your fuses - its possible you shorted a wire when you got hit (particularly if you were running the lights at the time). note you probs have two different fuse panels - under the hood and under the dash so check the owners manual for what fuses are where.