Brake Sensor ... again - K-Bikes.com - Excellence in Motion
Reply
 
LinkBack Thread Tools Display Modes
post #1 of 11 (permalink) Old Sep 19th, 2008, 5:39 pm Thread Starter
Would rather be riding
 
bonafidebob's Avatar
 
Join Date: Sep 2007
Location: Mountain View, CA, USA
Posts: 537
Brake Sensor ... again

It appears my brake pad wear sensor wire has broken again, 'cause the light is back on. This is the 3rd time! First was at 700 miles, wire replaced. 2nd was at about 13K miles, wire also replaced at the last service a couple of weeks ago. The 2nd time they didn't put any heat shrink tubing over the wires, which makes them look weird -- maybe that's a contributing factor to this new failure. I'll know after the 30th.

I asked about fixing it myself, but they want to have a look and in any case you need the computer (or a GS911) to clear the fault code and make the light go off. Oh well, visual inspection shows the pads are fine and the brakes work as expected, so no worries.

Maybe they should add another indicator to indicate when the brake indicator wire is broken...
bonafidebob is offline  
Sponsored Links
Advertisement
 
post #2 of 11 (permalink) Old Sep 19th, 2008, 6:31 pm
Veteran
 
Join Date: Jun 2006
Location: , ,
Posts: 2,680
Quote:
Originally Posted by bonafidebob
I asked about fixing it myself, but they want to have a look and in any case you need the computer (or a GS911) to clear the fault code and make the light go off.
Has anyone established whether the GS-911 will clear the brake fault code?

I thought this was still up-in-the-air?

Mack
GMack is offline  
post #3 of 11 (permalink) Old Sep 19th, 2008, 7:39 pm
IBR# 366
 
Meese's Avatar
 
Join Date: Apr 2007
Location: Oxnard, CA, USA
Posts: 3,143
Quote:
Originally Posted by GMack
Has anyone established whether the GS-911 will clear the brake fault code?
It doesn't yet, but they're working on it.

Ken
Pacific NorthWet
'13 Dark Graphite Metallic K16GTLD, 24K miles and counting...
'09 Magnesium Beige Metallic K13GT, 60K miles miles and counting...
'02 Mauve Metallic K12LTC, 106K miles and sold
BMWLT#145, IBA# 366, MOA# 111996, SCMA# 24032

All lower 48 states plus Alaska on the K13GT in two weeks . . .

Some people see the gas tank as half empty. Some see it as half full. All I care is that I know where the next tankful is coming from...
Meese is offline  
Sponsored Links
Advertisement
 
post #4 of 11 (permalink) Old Sep 21st, 2008, 10:50 pm
Addict
 
Join Date: May 2007
Location: , ,
Posts: 646
Quote:
Originally Posted by GMack
Has anyone established whether the GS-911 will clear the brake fault code?

I thought this was still up-in-the-air?

Mack

The gs911 will not clear or even read brake fault codes but they are working on it. Search and you will find info on that I posted a couple weeks ago.
Brahma is offline  
post #5 of 11 (permalink) Old Sep 22nd, 2008, 3:12 am
Enthusiast
 
®win's Avatar
 
Join Date: May 2006
Location: Republiek Hollands Midden, , NL
Posts: 246
Quote:
Originally Posted by bonafidebob
It appears my brake pad wear sensor wire has broken again, 'cause the light is back on. This is the 3rd time! First was at 700 miles, wire replaced. 2nd was at about 13K miles, wire also replaced at the last service a couple of weeks ago. The 2nd time they didn't put any heat shrink tubing over the wires, which makes them look weird -- maybe that's a contributing factor to this new failure. I'll know after the 30th.

I asked about fixing it myself, but they want to have a look and in any case you need the computer (or a GS911) to clear the fault code and make the light go off. Oh well, visual inspection shows the pads are fine and the brakes work as expected, so no worries.

Maybe they should add another indicator to indicate when the brake indicator wire is broken...
Give your dealer the hint to reposition the zip ties, or you'll be having this problem over and over again....

Grtz,
Erwin

'14 R1200GS Adventure LC - Racing Red uni matt - full options - Nav V ... where the road ends Adventure begins ...
'13 320dA Touring - Mineralgrau metallic ... Freude am Fahren ...
®win is offline  
post #6 of 11 (permalink) Old Sep 22nd, 2008, 11:20 am
Enthusiast
 
aj7840's Avatar
 
Join Date: Dec 2006
Location: Rockford, MI, USA
Posts: 365
Garage
Friday, the brake pad indicator light came on again, about 350 miles after it was fixed. Checked the pads again, still lots of life left. (How would I use the pads up in 350 miles).

Saturday morning, with 160 mile round trip to do, started the bike, the indicator light is on, go close the barn door and come back, the light is off.
540 miles later, light is still off. ?????

'07 K1200GT Crystal Gray Metalic
'00 Ducati 900 Monster
aj7840 is offline  
post #7 of 11 (permalink) Old Sep 22nd, 2008, 11:25 am Thread Starter
Would rather be riding
 
bonafidebob's Avatar
 
Join Date: Sep 2007
Location: Mountain View, CA, USA
Posts: 537
Quote:
Originally Posted by ®win
Give your dealer the hint to reposition the zip ties, or you'll be having this problem over and over again....
Good tip, I'll definitely make a bigger deal about it this time and ask some pointed questions about where the wire is breaking. Or is it shorting? Is this a circuit that's normally closed and opens to indicate failure, or is it the other way round?
bonafidebob is offline  
post #8 of 11 (permalink) Old Sep 22nd, 2008, 11:36 am
IBR# 366
 
Meese's Avatar
 
Join Date: Apr 2007
Location: Oxnard, CA, USA
Posts: 3,143
Quote:
Originally Posted by bonafidebob
Is this a circuit that's normally closed and opens to indicate failure
Yes. In normal operation, an exposed wire loop rubs against the rotor until it wears through, thus breaking the circuit and so the light comes on.

If the wire breaks anywhere along its length (due to being zip tied too tight, for example) then that also breaks the circuit and trips the lights regardless of the condition of the pads.

It is also possible for the wire to break inside the sheath, but maintain some contact at the broken point. That can give an intermittent reading where the light sometimes comes on then later goes off by itself.

If your dealer would pull the BMW Service Bulletin, it would show them exactly where the problem is from the factory. Or they could use a little intelligence and actually check the wire path carefully, paying particular attention to flexing as the suspension moves up and down.

Ken
Pacific NorthWet
'13 Dark Graphite Metallic K16GTLD, 24K miles and counting...
'09 Magnesium Beige Metallic K13GT, 60K miles miles and counting...
'02 Mauve Metallic K12LTC, 106K miles and sold
BMWLT#145, IBA# 366, MOA# 111996, SCMA# 24032

All lower 48 states plus Alaska on the K13GT in two weeks . . .

Some people see the gas tank as half empty. Some see it as half full. All I care is that I know where the next tankful is coming from...
Meese is offline  
post #9 of 11 (permalink) Old Sep 22nd, 2008, 1:06 pm
Senior Member
 
MdTbone's Avatar
 
Join Date: Oct 2007
Location: Dunkirk, MD, USA
Posts: 144
I had mine fixed a month ago, a week ago a nice person in a car who needed to talk with his friend and occupy the same space on the road as I, tested my flexes and the stopping ability of the bike. After a dip and bounce back, the brake light is on again.


I need tires in the next month and will have it all done then.

Wish BMW would add driver with car phone warning light.

Terry


2007 K1200 GT
1998 R1100 RT traded in
MdTbone is offline  
post #10 of 11 (permalink) Old Sep 22nd, 2008, 2:23 pm
Addict
 
Join Date: May 2007
Location: , ,
Posts: 646
mine is being looked at too rght now with the exact same intermittant symptmos.
Brahma is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the K-Bikes.com - Excellence in Motion 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










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
ABS power Brake Problem Solved The Fllash Technical, Repair and Maintenance 2 Aug 7th, 2010 9:33 pm
The best way to brake K bikes TiMax K12/1300GT (Next Gen) 11 Sep 11th, 2008 1:01 am
BRAKE ! LED Fails After Software Update panhard K12/1300R/R-Sport 0 Jul 20th, 2008 4:09 pm
Brake Failure - BAD robelliott K12/1300S 8 Jun 9th, 2008 1:42 pm
Brake problems ManfredH K12/1300S 1 Nov 2nd, 2005 9:03 am

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