Welcome to Bimmerfest -- The #1 Online Community for BMW related information! Please enjoy the discussion forums below and share your experiences with the 200,000 current, new and past BMW owners. The forums are broken out by car model and into other special interest sections such as BMW European Delivery and a special forum to voice your questions to the many BMW dealers on the site to assist our members!

Please follow the links below to help get you started!

Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > X Series > X5 E53 (1999 - 2006)

X5 E53 (1999 - 2006)
The X5 SAV Forum

Reply
 
Thread Tools Display Modes
  #1  
Old 04-30-2013, 12:28 PM
ebrockman ebrockman is offline
Registered User
Location: Pittsburgh, PA
 
Join Date: Mar 2013
Posts: 5
Mein Auto: 2005 X5 (e53)
Help! No resistance in brake pedal

I was driving around town today when all the sudden when a "Brake fluid low" message displayed on my dash. I still had braking power, but I noticed that the pedal when depressed would slowly drift to the floor. I got home safely, but by then I've noticed there's no resistance or braking power until it gets all the way to the floor, then I will get braking power. The fluid reservoir was about 2 inches below the "low" line. I've looked, but haven't readily found an obvious place brake fluid is leaking in my lines. To be honest, I've never really checked the brake fluid level in a couple years (yes I deserve a flogging for that) so I don't know if the low fluid level is new or a chronic issue. Do I most likely have a leak, or is the low fluid level misleading and its actually a failed master cylinder? Could someone please weigh in on the most likely issue? Thanks!!
Reply With Quote
Ads by Google
  #2  
Old 04-30-2013, 01:48 PM
boramkiv's Avatar
boramkiv boramkiv is offline
Propellers Up Front
Location: Chesapeake, VA
 
Join Date: Jan 2011
Posts: 1,775
Mein Auto: Some Bavarian car outside
Sounds like a definite leak. Could be anywhere in the entire system. Don't worry about that neglect, no one will haggle you. That's the most commonly neglected car system. BTW my '00 Jetta is a manual and went twelve years before its first pads and rotor change.

If you've never changed the fluid, moisture and contaminants could harm the seals in the master cylinder and recirculate without a leak noticeable.
Reply With Quote
  #3  
Old 04-30-2013, 02:36 PM
ebrockman ebrockman is offline
Registered User
Location: Pittsburgh, PA
 
Join Date: Mar 2013
Posts: 5
Mein Auto: 2005 X5 (e53)
Thanks, I think you're exactly right. I took down the shroud under the drivers side and it looks like both right and left lines are in horrible shape. Not sure which is the culprit, but they both need to be changed. Thanks!
Reply With Quote
  #4  
Old 05-01-2013, 01:05 PM
TechWrench TechWrench is offline
Registered User
Location: Glenville, NY
 
Join Date: Nov 2011
Posts: 20
Mein Auto: '99 540i, '02 X5 3.0i
Quote:
Originally Posted by ebrockman View Post
Thanks, I think you're exactly right. I took down the shroud under the drivers side and it looks like both right and left lines are in horrible shape. Not sure which is the culprit, but they both need to be changed. Thanks!
Unfortunately, the E53's have a known rust issue with the brake lines and connectors. I already answered your post in the 'other' forum. Good Luck.
Reply With Quote
Reply

Bookmarks


Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > X Series > X5 E53 (1999 - 2006)
Today's Posts Search
Thread Tools
Display Modes

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 On



Forum Jump


All times are GMT -7. The time now is 12:39 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
© 2001-2011 performanceIX, Inc. All Rights Reserved .: guidelines .:. privacy .:. terms