I'm a proud new owner of a '03 MCS!!I turned the car off today after a short 10 min drive and a very loud ticking sound from what seemed to be under the front passenger seat started.It lasted about 5 seconds then stopped then 1 min later it did the same thing? My car has the navigation package and I think the cd drive is under the seat sounded almost like a cd trying to eject!!HELP!!!

 

yes the NAV cd drive is there.

Have you moved the seat forward and look at the drive to see if it was trying to eject something?