alanw
Posts: 2
Joined: 6/26/2007
Status: offline
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I had the same on my C Class C220 CDI - W203, It turned out to be a Blue clip had broken that holds the handbrake cable up under the tunnel underneath, it stops the HB cable dropping down onto the prop shaft, it was really difficult to work out as it was intermittent and only clicked after I had been driving a while, the reason for that being that when the hanbrake was applied, e.g. when parked, it tensioned the cable away from the prop shaft, obviously, after driving for a while the cable lost it's tension and dropped back down onto the propshaft, and yes it clicked rotationally like a wheel does, it also sounded like it was coming from under the dash.
The solution : Remove plastic cover from under the engine and gearbox, replace clip or if enough of the clip is left, strap it back up onto the clip with a couple of decent cable ties (I did and it has lasted 2 years up to now), the whole job, about an hour and a half maximum.
Hope this helps
alanw
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clicking noise - 
