1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Brake Squak/Squeal

Discussion in 'Audi S4/A4/A4 Cab (B7 Chassis)' started by IainP, Apr 7, 2009.

  1. IainP
    Offline

    IainP Member

    Joined:
    Sep 25, 2007
    Messages:
    79
    Likes Received:
    0
    [Apr 7, 2009]
    Hi - has anyone had brake squeak/squeal problems? I have a really annoying low speed squeak on my 07 plate A4 Avant. Is de-glazing something that still needs to happen occasionally these days or am I looking at a stuck caliper or something?

    Any suggestions greatfully received before I face a trip to the local stealer! :salute:
    #1
  2. Ads

    Ads

    [Sep 21, 2014]

  3. razza1
    Offline

    razza1 Well-Known Member

    Joined:
    Dec 28, 2008
    Messages:
    1,546
    Likes Received:
    105
    [Apr 7, 2009]
    also have this so keen to know the cause...
    #2
  4. IainP
    Offline

    IainP Member

    Joined:
    Sep 25, 2007
    Messages:
    79
    Likes Received:
    0
    [Apr 9, 2009]
    Off to Edinburgh Audi tomorrow for them to take a look - they have come accross this before aparently.........will let you know how I get on!
    #3
  5. razza1
    Offline

    razza1 Well-Known Member

    Joined:
    Dec 28, 2008
    Messages:
    1,546
    Likes Received:
    105
    [Apr 10, 2009]
    Please do let me know
    #4
  6. IainP
    Offline

    IainP Member

    Joined:
    Sep 25, 2007
    Messages:
    79
    Likes Received:
    0
    [Apr 10, 2009]
    No fault found! They had i out on a road test and on the ramp/brake tester and all OK. They re-greased calipers in case pressure washing had washed away grease just in case - no squeaks on the way home but it did only do it when the brakes were hot. I'll let you know if it comes back.

    Oh, and I got a free oil change/top-up as the low oil light came on while i was on my wat to the dealer, thanks Edinburgh Audi :)
    #5
  7. AndymacA4
    Offline

    AndymacA4 Member

    Joined:
    Oct 1, 2008
    Messages:
    165
    Likes Received:
    0
    [Apr 11, 2009]
    I found that smearing the back of the brake pads and the sliding surfaces on the caliper with copper grease stops squeals, especially in slow traffic.
    #6
  8. Caesium
    Offline

    Caesium My BM is fixed!

    Joined:
    May 26, 2004
    Messages:
    4,879
    Likes Received:
    4
    [Apr 11, 2009]
    The squeaking is the hard compound of the pads, get a softer set of pads or grooved discs.
    Smearing copper ease on the back of the pads wont do jack.

    If someone could explain how putting anti-seize compound on the back of a brake pad will stop it squeaking I'd be interested to hear it.
    Copper ease should be used sparingly only on the moving parts of the pad, anywhere else will only attract the dust.
    #7
  9. razza1
    Offline

    razza1 Well-Known Member

    Joined:
    Dec 28, 2008
    Messages:
    1,546
    Likes Received:
    105
    [Apr 11, 2009]
    Already got grooved discs, not sure what the pads are though
    #8
  10. NHN
    Offline

    NHN Retrofitter - Audi - VW - Skoda - Seat Site Sponsor VCDS Map User

    Joined:
    Jan 14, 2008
    Messages:
    27,320
    Likes Received:
    1,229
    [Apr 11, 2009]
    Chris is correct, but you'll find if the pads bedded into the disk some, then this causes squeaking sometimes, I found the best option was to have the discs skimmed flat again so no ridge as such, soon resolved the problem & as my then discs were £500 on my S3 it was way cheaper, didnt squeak after that
    #9
  11. Caesium
    Offline

    Caesium My BM is fixed!

    Joined:
    May 26, 2004
    Messages:
    4,879
    Likes Received:
    4
    [Apr 12, 2009]
    Try taking the pads out and giving the friction surface a going over with some emery cloth to deglaze them. Sometimes works.
    #10
  12. IainP
    Offline

    IainP Member

    Joined:
    Sep 25, 2007
    Messages:
    79
    Likes Received:
    0
    [Apr 23, 2009]
    Well the car was back at the dealer today as the squeak was as bad as ever a few days after the last visit.........despit this now being the 3rd time they have seen the car for this issue they for the first time said that they had identified the problem as a build up of brake dust/debris and wanted £150 to dismantle/clean etc.!! Oh and by the say this might not work & it might need new pads! It's only done 13k miles since new!

    I told them there was no way I was paying for an investigative clean and after a fairly heated discussion and escalation to the service manager they are doing it for free........i'll let you know how it is when I get it back tomorrow.....
    #11
  13. Richardesty
    Offline

    Richardesty loves quattro

    Joined:
    Oct 10, 2008
    Messages:
    750
    Likes Received:
    16
    [Apr 24, 2009]
    Never had it on the A4 - but on all other car's I've had such noises are caused by a vibration in the pad, in turn caused by a build up of brake dust.

    Removing pads, cleaning them and the caliper/pistons before smearing the back of the pad with copper grease and putting it back together generally cures the problem.

    As a short term fix - take the wheel off and give the brakes a blast with an airline - you'll be amazed at how much dust you get out that way:thumbsup:
    #12
  14. IainP
    Offline

    IainP Member

    Joined:
    Sep 25, 2007
    Messages:
    79
    Likes Received:
    0
    [Apr 24, 2009]
    I'm pretty sure that's what the dealer was going to do and try and charge me £150 for!
    #13
  15. NHN
    Offline

    NHN Retrofitter - Audi - VW - Skoda - Seat Site Sponsor VCDS Map User

    Joined:
    Jan 14, 2008
    Messages:
    27,320
    Likes Received:
    1,229
    [Apr 24, 2009]
    Well if they were removing the wheels, etc on all 4 then thats expected tbh, why cant you do it yourself? These things are wear & tear tbh & if you've been braking hard then this is what happens, not to say you are but regular hard braking can cause these issues.
    #14
  16. razza1
    Offline

    razza1 Well-Known Member

    Joined:
    Dec 28, 2008
    Messages:
    1,546
    Likes Received:
    105
    [Apr 24, 2009]
    apart from the annoying noise does this cause any damage/affect the braking effectiveness?
    #15

Share This Page