New 2009 2010 BMW Z4 - ZPOST
BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read


Go Back   New 2009 2010 BMW Z4 - ZPOST > BMW Z4 Forum (E89) > 2009-Current Z4 Forum (E89) General Discussion

Post Reply
 
Thread Tools Search this Thread
      11-29-2011, 04:15 AM   #1
s2000jan
Second Lieutenant
Belgium
11
Rep
217
Posts

Drives: E89 - sDrive 35is
Join Date: Dec 2009
Location: Belgium - Antwerp area

iTrader: (0)

Brake/Brake Pedal problems

I have a 35is which has the following problem: when the car has stood still for several hours (half a day, full day), the brake pedal gets very very hard in 8 out of 10 cases.

As I need to depress it to start, the car even moves a bit during starting...

After starting, everything is ok, brakes function fine.

Someone told me it is a leak in the vacuum part of the brakes (I'm not a technician so I know not much about it)

I took it to the dealer who just greased the rubbers of the pedal (wtf!?): "probably due to cold weather the pedal gets hard"

NOT !

So now the dealer has no clue and he suggests to replace the thing that helps you brake (sorry, can't seem to find the proper word, I'm dutch speaking you know - brake booster??)

So what do you think?
Anyone experienced the same problem?

Thanks!
__________________
2012 - F30 - 330d M-pack - Glacier Silver
1999 - Honda S2000 - Silverstone
Appreciate 0
      11-29-2011, 10:59 AM   #2
ChuckB
Lieutenant
ChuckB's Avatar
United_States
17
Rep
448
Posts

Drives: 2020 X2 2.0i
Join Date: Mar 2008
Location: Hockenheim, Germany (APO)

iTrader: (0)

Could be either the brake booster itself, or a check valve which retains vacumn. Doens't sound like a vacumn leak - in any case needs to be checked by the dealer, and quickly before you loose all braking.
Appreciate 0
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 07:25 AM.




zpost
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST