The car: a 2003 CLK240. I recently had a new battery fitted. Reset the the windows, no need of a new code for the radio - all good. But....after the engine starts, there is a 'knocking' sound coming from somewhere behind centre console. I can only like the knock to one hitting an empty tin can with a pen - but here's the thing, it is alsways 50 'knocks' and then it stops. It is always 50 knocks, never 49 or 51.
Any ideas what's causing it and how to stop it? Needless to say, it has only appeared since the battery was fitted.
Any ideas what's causing it and how to stop it? Needless to say, it has only appeared since the battery was fitted.