DEONWRIGHT

I GOT A NEW BUMPER COVER INSTALLED ON MY CL500. I WENT TO PICK IT UP AND THE GUY SAYS IT WONT START. PUT THE KEY IN IT AND TURN IT AND GOT NOTHING IT JUST SAYS REMOVE KEY. CHECKED THE BATTERY AND IT'S GOOD. IT JUST STARTED 1 DAY BEFORE. CHECKED THE FUSES THEY ARE GOOD. I AM LOST AND PISSED. I WANT TO FIND OUT AS MUCH AS I CAN SO I DON'T GET TAKEN FOR A VERY EXPENSIVE RIDE! CAN ANYONE HELP WITH SOME TIPS?