I park in a garage that uses an RFID tag for entry and exit. It is read by a transponder above the car when the car is stopped underneath it. Today for the very first time I took the MS to the garage and discovered that the transponder would not read the tag when it was inside the windshield. I had to open the sunroof and wave the tag with my hand sticking out. Very embarrassing given that cars were piling up behind me waiting for the gate to open. Is the MS RF proof?