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Next: E39 - Snow & Snowsocks
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External
Since: Sep 15, 2006
Posts: 2
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(Msg. 1) Posted: Fri Sep 15, 2006 12:17 pm
Post subject: brakes sticking -- any clues?
Archived from groups: alt>autos>bmw (more info?)
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The brakes on my 2002 325cic sometimes fail to release. They apply
light, increasing pressure until you can really feel it from within the
vehicle. Rolling to a stop becomes impossible, the brakes grab and
even prevent me from rolling backwards on slight inclines. It's an
intermittent issue -- one usually associated with warmer weather.
I'm stuck because my dealer (Dryer Reinbold in Indy) won't do anything
unless they can re-create the issue. So unless it happens again while
a)I'm close to their dealership, b) they're open, c) my mechanic is
available, d) I don't have to stop and let them cool before getting
there I'm hosed.
I did manage to get it there once while it was happening, got the
mechanic in the car long enough for him to notice it -- but just for a
second, as soon as he backed up and stopped they released. I understand
the dealer won't fix what they can't clearly diagnose themselves -- but
with winter approaching the car will be unsafe on snow or ice with the
brakes as they are.
Any clues as to what could be causing them to fail to release properly?
Recently I did have them replace the parking brake kit as it failed
and had brake matter stuck in the brake caliper...
b |
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External
Since: Aug 19, 2006
Posts: 5
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(Msg. 2) Posted: Sat Sep 16, 2006 12:47 am
Post subject: Re: brakes sticking -- any clues? [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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indyliberal.RemoveThis@gmail.com wrote:
> The brakes on my 2002 325cic sometimes fail to release. They apply
> light, increasing pressure until you can really feel it from within the
> vehicle. Rolling to a stop becomes impossible, the brakes grab and
> even prevent me from rolling backwards on slight inclines. It's an
> intermittent issue -- one usually associated with warmer weather.
>
> I'm stuck because my dealer (Dryer Reinbold in Indy) won't do anything
> unless they can re-create the issue. So unless it happens again while
> a)I'm close to their dealership, b) they're open, c) my mechanic is
> available, d) I don't have to stop and let them cool before getting
> there I'm hosed.
>
> I did manage to get it there once while it was happening, got the
> mechanic in the car long enough for him to notice it -- but just for a
> second, as soon as he backed up and stopped they released. I understand
> the dealer won't fix what they can't clearly diagnose themselves -- but
> with winter approaching the car will be unsafe on snow or ice with the
> brakes as they are.
>
> Any clues as to what could be causing them to fail to release properly?
> Recently I did have them replace the parking brake kit as it failed
> and had brake matter stuck in the brake caliper...
Is there a chance that your car is equipped with a manual transmission
and the "hill assist" (or whatever it is called by BMW) option?
If so, I wonder if it could be a malfunction of the system so that it
thinks the car is rolling back so it applies the brakes?
If not, well... hmmm...
Cheers, Bob |
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External
Since: Apr 11, 2005
Posts: 126
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(Msg. 3) Posted: Sat Sep 16, 2006 12:59 am
Post subject: Re: brakes sticking -- any clues? [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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<indyliberal.TakeThisOut@gmail.com> wrote in message
news:1158347835.305537.322160@m73g2000cwd.googlegroups.com...
> The brakes on my 2002 325cic sometimes fail to release. They apply
> light, increasing pressure until you can really feel it from within the
> vehicle. Rolling to a stop becomes impossible, the brakes grab and
> even prevent me from rolling backwards on slight inclines. It's an
> intermittent issue -- one usually associated with warmer weather.
>
> I'm stuck because my dealer (Dryer Reinbold in Indy) won't do anything
> unless they can re-create the issue. So unless it happens again while
> a)I'm close to their dealership, b) they're open, c) my mechanic is
> available, d) I don't have to stop and let them cool before getting
> there I'm hosed.
>
> I did manage to get it there once while it was happening, got the
> mechanic in the car long enough for him to notice it -- but just for a
> second, as soon as he backed up and stopped they released. I understand
> the dealer won't fix what they can't clearly diagnose themselves -- but
> with winter approaching the car will be unsafe on snow or ice with the
> brakes as they are.
>
> Any clues as to what could be causing them to fail to release properly?
> Recently I did have them replace the parking brake kit as it failed
> and had brake matter stuck in the brake caliper...
Sounds like it might be a fault in the master cylinder.
Seems unlikely, but if some crud (technical term) is intermitantly
preventing the fluid returning through the m/c back into the reservoir,
pressure could be building up in the brake lines.
My first thaught would be to change the brake fluid, giving it a good flush
though at the same time. If it is what I suspect, that would offer a
reasonable chance of clearing the crud out of the system.
Mike. >> Stay informed about: brakes sticking -- any clues? |
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External
Since: Sep 12, 2004
Posts: 53
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(Msg. 4) Posted: Sat Sep 16, 2006 7:22 am
Post subject: Re: brakes sticking -- any clues? [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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Nedavno indyliberal DeleteThis @gmail.com pise:
| The brakes on my 2002 325cic sometimes fail to release. They apply
| light, increasing pressure until you can really feel it from within
| the vehicle. Rolling to a stop becomes impossible, the brakes grab
| and even prevent me from rolling backwards on slight inclines. It's
| an intermittent issue -- one usually associated with warmer weather.
|
| Any clues as to what could be causing them to fail to release
| properly? Recently I did have them replace the parking brake kit as
| it failed and had brake matter stuck in the brake caliper...
Similar situation happened to me few years ago, only more drastic.
After driving (Audi, not BMW) for an hour or so it was like I was
trying to brake and accelerate at the same time. All four wheels
(brake rotors) were (very) hot.
It turned up to be brake master cylinder. And it all started to happen
after I went to a mechanic for some unrelated job, and he noticed that
my brake fluid level was low (but it was only not at max), and added
some. After that I had to change clutch hydraulic cylinder, and brake
master cylinder. He must have added wrong brake fluid.
But this was a independent mechanic, not Audi dealer, BMW dealership
should knew what is correct brake fluid for your car.
--
___ ____
/__/ / \ ** Registrovani korisnik Linuksa #291606 **
/ / \/ /\ \ ** Registered Linux user #291606 **
/__/\____/--\__\ ** http://counter.li.org/ ** >> Stay informed about: brakes sticking -- any clues? |
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External
Since: Sep 03, 2006
Posts: 8
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(Msg. 5) Posted: Sat Sep 16, 2006 9:16 pm
Post subject: Re: brakes sticking -- any clues? [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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<indyliberal.RemoveThis@gmail.com> wrote in message
news:1158347835.305537.322160@m73g2000cwd.googlegroups.com...
> The brakes on my 2002 325cic sometimes fail to release. They apply
> light, increasing pressure until you can really feel it from within the
> vehicle. Rolling to a stop becomes impossible, the brakes grab and
> even prevent me from rolling backwards on slight inclines. It's an
> intermittent issue -- one usually associated with warmer weather.
>
> I'm stuck because my dealer (Dryer Reinbold in Indy) won't do anything
> unless they can re-create the issue. So unless it happens again while
> a)I'm close to their dealership, b) they're open, c) my mechanic is
> available, d) I don't have to stop and let them cool before getting
> there I'm hosed.
>
> I did manage to get it there once while it was happening, got the
> mechanic in the car long enough for him to notice it -- but just for a
> second, as soon as he backed up and stopped they released. I understand
> the dealer won't fix what they can't clearly diagnose themselves -- but
> with winter approaching the car will be unsafe on snow or ice with the
> brakes as they are.
>
> Any clues as to what could be causing them to fail to release properly?
> Recently I did have them replace the parking brake kit as it failed
> and had brake matter stuck in the brake caliper...
>
Just passing through. 
This reminds me of a fairly similar fault I once came across on a UK made
truck. It was caused by a faulty valve (air/vacuum) in the brake vacuum
servo. Of course, I don't know if your vehicle uses such a brake servo
(there are so many different ones used). It's often too easy to assume that
the fault must be in the brake master cylinder.
Sylvain.
> b
> >> Stay informed about: brakes sticking -- any clues? |
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External
Since: Jun 01, 2006
Posts: 4
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(Msg. 6) Posted: Mon Sep 18, 2006 10:18 am
Post subject: Re: brakes sticking -- any clues? [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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indyliberal.TakeThisOut@gmail.com wrote:
> The brakes on my 2002 325cic sometimes fail to release. They apply
> light, increasing pressure until you can really feel it from within
> the vehicle. Rolling to a stop becomes impossible, the brakes grab
> and even prevent me from rolling backwards on slight inclines. It's
> an intermittent issue -- one usually associated with warmer weather.
Does it behave like the problem described here:-
http://www.brakesint.co.uk/technical.html#techNote301
?
Andrew >> Stay informed about: brakes sticking -- any clues? |
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External
Since: Sep 03, 2006
Posts: 8
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(Msg. 7) Posted: Mon Sep 18, 2006 10:56 am
Post subject: Re: brakes sticking -- any clues? [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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"Andrew Morton" <akm DeleteThis @in-press.co.uk.invalid> wrote in message
news:4n77hgF8ulc1U1@individual.net...
> indyliberal DeleteThis @gmail.com wrote:
>> The brakes on my 2002 325cic sometimes fail to release. They apply
>> light, increasing pressure until you can really feel it from within
>> the vehicle. Rolling to a stop becomes impossible, the brakes grab
>> and even prevent me from rolling backwards on slight inclines. It's
>> an intermittent issue -- one usually associated with warmer weather.
>
> Does it behave like the problem described here:-
> http://www.brakesint.co.uk/technical.html#techNote301
>
That's a very good fault-finding guide. All you car drivers should _archive_
it.
Sylvain.
> ?
>
> Andrew
> >> Stay informed about: brakes sticking -- any clues? |
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External
Since: Sep 15, 2006
Posts: 2
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(Msg. 8) Posted: Thu Sep 21, 2006 11:55 am
Post subject: Re: brakes sticking -- any clues? [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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All,
Thanks for the advice and ideas. The issue is now resolved. It took
six visits to the shop, but they finally pulled and tested my calipers
and found that the driver's-side rear caliper wasn't releasing
properly. A new caliper and a brake fluid flush / fill / bleed has
hopefully solved the problem.
The only lingering frustration is that the brake issue is why I took it
in in the first place -- specifically the left rear brake. I
understand the difficulty in resolving intermittent issues, but wish
the dealer had taken the time to check the calipers on one of the first
five visits to their shop...
b >> Stay informed about: brakes sticking -- any clues? |
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