BMW M3 Forum (E90 E92)

BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read


Go Back   M3Post - BMW M3 Forum > E90/E92 M3 Technical Topics > Suspension | Brakes | Chassis
 
BPM
Post Reply
 
Thread Tools Search this Thread
      05-05-2017, 08:43 AM   #1
IanMan
Enlisted Member
IanMan's Avatar
1
Rep
30
Posts

Drives: Alpine White M3 Sedan
Join Date: Nov 2016
Location: Hawaii

iTrader: (0)

Brake Fluid Low Again

Hey all. I'm currently having to refill my reservoir, yet again. I have no idea how my brake fluid got so low. It doesn't leak at all, I'm not seeing any fluids in my parking spot. I had the issue two months ago. I filled it up, and everything was fine. Now I'm getting the light again. Has anyone dealt with this before, and if so, where should I start?
__________________
2008 E90 M3 V8 - Alpine White
2008 E60 M5 V10 - Space Gray - Gone
2006 E90 325i - Sparkling Graphite - Gone
2001 E46 M3- Phoenix Yellow - Gone
1984 E28 533i- Bronzitbeige Metallic - Gone
Appreciate 0
      05-05-2017, 10:28 PM   #2
roastbeef
Major General
roastbeef's Avatar
United_States
1203
Rep
5,399
Posts

Drives: E92 M3
Join Date: Nov 2010
Location: Orange County, CA

iTrader: (1)

i haven't had to deal with this, but maybe your seals/dust boots are shot and its leaking onto the pads/rotors and getting burned off.
__________________
Appreciate 0
      05-06-2017, 11:32 AM   #3
VictorH
Captain
91
Rep
913
Posts

Drives: '09 M3
Join Date: Dec 2007
Location: SC

iTrader: (3)

It's leaking, you just need to find where. I'd start at the calipers and then work back. Take off the wheels and remove the pads at each corner, look at each piston, bleeder and brake line fitting. Check all of the brake lines including the middle ones in the back left side. If that's all dry then you'll need to move all the plastic from the master cylinder, not just the cover but the surrounding parts (it's not hard), look under the master and the ABS unit. Also, look inside the car near the brake pedal to make sure no brake fluid is tracking into the passenger compartment. Beyond that I'm not sure what else you can do, if still no luck then I guess you're off to the shop.
Appreciate 1
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 -4. The time now is 05:26 AM.




m3post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
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