E Class, brake judder?
Discussion
Over the past 4 weeks my E AMG Line has developed a vibration when braking, I know the E is prone to this issue.
the car has 56k on the clock, it’s been an intermittent issue for many months, but it was very faint.
Over this past few weeks it’s been quite pronounced! Over 50mph-70mph is where it’s felt, there no feeling in the brake pedal or steering wheel, it’s through the car seat and it’s when you apply the brake pedal with very gentle braking to normal braking.
Driving the car from cold is fine, it’s once the brakes have been applied and there’s some temperature in them that the issue starts.
If the front discs have warped, wouldn’t this be felt in the brake pedal/steering wheel?
the car has 56k on the clock, it’s been an intermittent issue for many months, but it was very faint.
Over this past few weeks it’s been quite pronounced! Over 50mph-70mph is where it’s felt, there no feeling in the brake pedal or steering wheel, it’s through the car seat and it’s when you apply the brake pedal with very gentle braking to normal braking.
Driving the car from cold is fine, it’s once the brakes have been applied and there’s some temperature in them that the issue starts.
If the front discs have warped, wouldn’t this be felt in the brake pedal/steering wheel?
Sounds like rears if you are feeling it in the seat.
Jaguar XF have also been prone to brake judder, I got judder and solved it by stripping and cleaning the brakes. My discs were almost new so I left them alone. I suspect it could have been my caliper guide pins sticking and subsequent effect on the pads. My rear o/s pin was sticking and squealing whilst driving. It was a combination of slight corrosion in the guide pin holes and possibly someone using copper grease which had swelled the rubber bushes.
Here's what I did:
1. Buffed caliper slide pin holes using a Dremel and wire brush attachment and also any surface rust from the calipers etc.
2. Carefully buffed caliper slide pins (had black crude on them) using Dremel with mild sandpaper attachment.
3. Replaced slide pin bushes.
4. Lubed up guide pins using Mintex Ceratec (excellent stuff). It's debatable whether or not to do this but I decided to do it. Don't use copper grease as it will swell the rubber bushes.
5. Put new brake pads on and lubed up using Mintex Ceratec.
6. Bedded in using the gentle procedure.
Squealing gone, judder gone and brakes have a perfect progressive feel and work great. Very satisfying job afterwards.
Jaguar XF have also been prone to brake judder, I got judder and solved it by stripping and cleaning the brakes. My discs were almost new so I left them alone. I suspect it could have been my caliper guide pins sticking and subsequent effect on the pads. My rear o/s pin was sticking and squealing whilst driving. It was a combination of slight corrosion in the guide pin holes and possibly someone using copper grease which had swelled the rubber bushes.
Here's what I did:
1. Buffed caliper slide pin holes using a Dremel and wire brush attachment and also any surface rust from the calipers etc.
2. Carefully buffed caliper slide pins (had black crude on them) using Dremel with mild sandpaper attachment.
3. Replaced slide pin bushes.
4. Lubed up guide pins using Mintex Ceratec (excellent stuff). It's debatable whether or not to do this but I decided to do it. Don't use copper grease as it will swell the rubber bushes.
5. Put new brake pads on and lubed up using Mintex Ceratec.
6. Bedded in using the gentle procedure.
Squealing gone, judder gone and brakes have a perfect progressive feel and work great. Very satisfying job afterwards.
ninjag said:
Sounds like rears if you are feeling it in the seat.
Jaguar XF have also been prone to brake judder, I got judder and solved it by stripping and cleaning the brakes. My discs were almost new so I left them alone. I suspect it could have been my caliper guide pins sticking and subsequent effect on the pads. My rear o/s pin was sticking and squealing whilst driving. It was a combination of slight corrosion in the guide pin holes and possibly someone using copper grease which had swelled the rubber bushes.
Here's what I did:
1. Buffed caliper slide pin holes using a Dremel and wire brush attachment and also any surface rust from the calipers etc.
2. Carefully buffed caliper slide pins (had black crude on them) using Dremel with mild sandpaper attachment.
3. Replaced slide pin bushes.
4. Lubed up guide pins using Mintex Ceratec (excellent stuff). It's debatable whether or not to do this but I decided to do it. Don't use copper grease as it will swell the rubber bushes.
5. Put new brake pads on and lubed up using Mintex Ceratec.
6. Bedded in using the gentle procedure.
Squealing gone, judder gone and brakes have a perfect progressive feel and work great. Very satisfying job afterwards.
Thanks for the informative reply.Jaguar XF have also been prone to brake judder, I got judder and solved it by stripping and cleaning the brakes. My discs were almost new so I left them alone. I suspect it could have been my caliper guide pins sticking and subsequent effect on the pads. My rear o/s pin was sticking and squealing whilst driving. It was a combination of slight corrosion in the guide pin holes and possibly someone using copper grease which had swelled the rubber bushes.
Here's what I did:
1. Buffed caliper slide pin holes using a Dremel and wire brush attachment and also any surface rust from the calipers etc.
2. Carefully buffed caliper slide pins (had black crude on them) using Dremel with mild sandpaper attachment.
3. Replaced slide pin bushes.
4. Lubed up guide pins using Mintex Ceratec (excellent stuff). It's debatable whether or not to do this but I decided to do it. Don't use copper grease as it will swell the rubber bushes.
5. Put new brake pads on and lubed up using Mintex Ceratec.
6. Bedded in using the gentle procedure.
Squealing gone, judder gone and brakes have a perfect progressive feel and work great. Very satisfying job afterwards.
The car goes in tomorrow for its B service at Mercedes, I have asked them to check the discs, and lower control arm bushes, it’s due it’s brake fluid change also.
If all seems fine, then I will check the callipers myself.
New discs and pads with sensors from Mercedes Newcastle for the AMG Line drilled are £250.
Thanks
PLuKE said:
Thanks for the informative reply.
The car goes in tomorrow for its B service at Mercedes, I have asked them to check the discs, and lower control arm bushes, it’s due it’s brake fluid change also.
If all seems fine, then I will check the callipers myself.
New discs and pads with sensors from Mercedes Newcastle for the AMG Line drilled are £250.
Thanks
Ouch! But I guess that's OEM for you! I'd be very surprised at warped discs, I'm sure that's not easy to do and often it's pad transfer reassembling it instead, but you never know. The car goes in tomorrow for its B service at Mercedes, I have asked them to check the discs, and lower control arm bushes, it’s due it’s brake fluid change also.
If all seems fine, then I will check the callipers myself.
New discs and pads with sensors from Mercedes Newcastle for the AMG Line drilled are £250.
Thanks
PLuKE said:
Mercedes said “ rear pads are at 4mm and the rear discs have a lipped edge now. And that’s the issue, apparently! The car has covered 56k
Does your car have wear sensors? I'd be double checking myself anyway. Could be worth asking them to check the movement of the slide pins whilst they are in there, although I'd be surprised if they actually bothered. Gassing Station | Suspension, Brakes & Tyres | Top of Page | What's New | My Stuff