As a new Saab owner, I love my car, a low milage (37 k) 2000 9-3 conv. however as the weather began getting colder I started using the heated seats. The problem began yesterday. When I turn the heated seat on as it warms-up a popping or clicking sound begins and gets worse as the seat continues to heat, furthermore it continues to make the sound after the car is turned off until the seat itself cools down. Also the sound is accompanied by an actual popping on the seat, so I can feel a pop concurrently with the noise. Any ideas?