How long they good for in terms of calibration? Does anyone know what the score is,I mean do they go off after a certain amount of time or would it be such a small deterioration that it for Joe P, it wouldn't matter. Also why can't I sleep tonight?
Will just cost you about 30mins of your time.
Clean out the window motor - Mine was like this. Cleaned it the other week, working perfectly fine now
There's a guide on here somewhere