BenzWorld Junior Member
Date registered: Jun 2010
Vehicle: CLK 270CDI Elegance Auto, 2004
Location: Edinburgh Scotland
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Rear Brake Judder?
I have a CLK 270 CDI - 2004. 82k miles - 5 speed auto
Have had a problem for sometime with a rear braking judder type noise and feeling coming through the body of the car (rather than the steering wheel) when I perfom firm (as against light or hard) breaking from about 40/60 mph (below and above that there is no issue) particular when coming down a slope to stop at a junction.
This has got worse recently - and indeed is now quite alarming with more vibration and noise like I'm running over rumble strips on the road, and it has also just started to do it when braking on long sweeping bends - particularly to the right). However the car does still stop quickly enough. I did notice that it got worse after being laft for a week at the airport (with the parking brake applied - I never normally use it)
The rear tyres are to MB spec (size) and don't appear to be warped, tho they are quite low on tread, but legal. Rear pads quite new, and the discs don't have any markings or scoring on them. Front tyres and pads are new.
So I took it into kwikfit to get a look underneath (for free), they found that both rear springs were broken - at the last turn at the bottom - so I replaced them. They checked the braking performance and found brake pressure on the rear wheels to be constant and balanced. So the discs aren't warped, and I know the pads have plenty of life in them. They also checked all the rear suspension mounts / prop shaft and could find nothing wrong. the symtoms continue.
So any ideas what it can be. I wondered about an ABS fault (a wheel sensor?), but surely that would have shown up in the brake test? I have no dash fault warnings at all.
The mechanic suggested that it could need to have gearbox/torque convertor fluid and filter replacing (he said due at around 80k miles) - I don't understand his reasoning - I have no problems with the gearbox - it changes smoothly and there seems to be no slipping - but I am doubtful about fluid (not the place to start in cost terms alone).
Last edited by alistair260661; 04-15-2012 at 03:55 AM.