Exterior spare tire sensor failure
 

We have a '05 turbo with the optional exterior spare tire. It looks like the sensor failed and shows as the spare tire frame not being closed (like the door). The problem is this pretty much over rides the other warning lights, and even changing the clock time. So, I can't put it off any longer. Has anyone replaced one, or did you take it to a shop? Do you have a part number. It looks like the sensor is below the bottom hinge. Thanks for any help.