hi , was wondering if anyone else has had a problem with the heated rear window not stopping on intermittently, the wife noticed it the other day, when she presses the button the amber light comes on first for about 30 secs then goes off and then if you try to put it back on the light goes out almost immediatley , though sometimes it will stay on for the duration of the timer , all fuses etc are ok ... am i missing something lol cheers mark