My rear window defroster does not seem to be working anymore. Can someone out there give me tips on what to check for before I bring it into the dealership? Someone mentioned a microswitch up front somewhere, but I can't find the thread. Looked all over the border of the windshield for a microswitch, but didn't see anything I recognized. If you have a photo of it, I'd appreciate it. Also, what to do with it once I locate it? Hoping it's something simple. Love this car.

Thanks in advance!