Help.
Its is quite cold outside -27-30 degrees C. The c320 has been parked in a garage. When I start it, the speedometer needle seems to rattle or bounce, not bounce from 0 to 50 or anything eratic like that, but lightly bounce from 0 km to maybe 5km. The rattle continues for a few seconds, maybe 8 or so and then it stopped. Automatically the tachometer needle goes tonormal and the gasoline guage / needle alsogoes to normal. When the speedometer was bouncing the gasoline needle didn't move nor did the tachometer needle. Seems like initally the car isn't getting enough power as dash lights seem a bit dim too, but once the needle stops bouncing after 8 seconds the lights seem brighter and everything seems ok. Battery has been checked and it is still very good, battery only about 2 years old.I also notice this when the vehicle has been sitting outside parked for a period of time and then I start it the speedometer acts up again. It is happening more frequently now, which is troubling me.Any suggestions?[/align][/align][/align]