When you get to the appropriate place in the manual you will find that you have to turn the key all the way to left and then back right to re-start the car. Lots of us have done that by the way.

Griots has a product that removes wax (must have not been one of the premium brands like P21S or Zymol) from trim. Griot's Garage 1-800-345-5789 - Car Care

There are lots of threads on fixing the thump but one often over looked is the noise the privacy shield makes - searching this site will turn up a few guides for fixing it but I'd go back to the dealer at least once if I had this. Just because you asked them to check it doesn't mean they did.