brake fail and rapid flashing warning light - BMW Luxury Touring Community
 
LinkBack Thread Tools Display Modes
post #1 of 4 Old May 3rd, 2009, 3:51 am Thread Starter
Junior Member
 
Join Date: Jun 2008
Location: Novi Sad, , Serbia
Posts: 18
brake fail and rapid flashing warning light

Hi have had a search cant find anything can anyone help please

Riding my Servo LT at 90 brake fail light comes on and I try the brakes and nothing. I cost to a halt reset and after 50m they fail again. I check fluids and switches all seem fine.

At one point the brake lights were stuck on but now are fine.
servo sounding all the time gets louder when brakes applied
Get recovered to BMW and they plug in and it in. Pressure to high in front system is found
Hed checks levels and switches
Tech guy pushes back front brake pistons and the brakes reset and work. He says it must be sticking front pistons.
So I ride home and srtip the pistons out front and rear and they are all fine I can push them back in with my fingers.

So as you turn on brake fail light flashes slowly for a few seconds and then flashes rapidly and sometimes the servo sounds.

so any ideas please

Last edited by itsallpoo; May 3rd, 2009 at 3:52 am. Reason: spelling
itsallpoo is offline  
Sponsored Links
Advertisement
 
post #2 of 4 Old May 3rd, 2009, 3:54 am
Senior Member
 
Join Date: Oct 2006
Location: Savannah, GA, USA
Posts: 1,893
Re: brake fail and rapid flashing warning light

I had the same thing a little while ago. The battery was dieing.
Morley is offline  
post #3 of 4 Old Sep 17th, 2009, 10:06 am Thread Starter
Junior Member
 
Join Date: Jun 2008
Location: Novi Sad, , Serbia
Posts: 18
Re: brake fail and rapid flashing warning light

Hi did your brakes actualy fail due to a failing battery ?
itsallpoo is offline  
 
post #4 of 4 Old Sep 17th, 2009, 10:20 am
Wrencher Extraordinaire
 
jzeiler's Avatar
 
Join Date: May 2004
Location: Hazel Green, AL, USA
Posts: 13,212
Re: brake fail and rapid flashing warning light

The servo system must have enough available current to run the pumps up to pressure. A low voltage will cause that to fault out. The BMW test should have been more conclusive as to the cause of the problem. Typically it is in the ABS unit (electronic brain) and not a caliper issue.


Has the system been flushed with new fluid regularly? That can have an impact on internal faults. The brake light switches (handle bar and foot) feed the electronic ABS brain which then drives the brake light relay. If one of these is making contact all the time that can overheat the servo (and cause the brake light to stay on). Make sure they both are adjusted correctly.

John
2009 K1300GT Red Rocket
2009 R1200GS (Gone)
2005 K1200LT Ocean Blue Blue Wizard 110 K and counting...
2006 Bushtec Turbo+2 Spell
2004 330 Ci Convertable
K4AN

Have ridden a Motorcycle in all 48
But lack DE, MA, RI and CT with the 2005 LT

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
jzeiler is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the BMW Luxury Touring Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may 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
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome