Tony686
Member Since: 23 Oct 2007
Location: Essex
Posts: 636
  
|
| Changed pads but Warning still on dash |
|
Changed the rear pads as they were really warn. Have replaced the sensor, but the warning light is still on and the inforamtion panel still says 'check brake pads'.
Am i supposed to do anything else, like a bedding in procedure or anything, did do it the last time i changed them?
Have ordered a new pad sensor just in case.
Tony CLUB DEFNER
|
 28th Oct 2009 3:37 pm |
|
|
DiscoDunc
Member Since: 08 May 2006
Location: Bristol
Posts: 16390
 
|
what are the front pads like ?? do they need changing. try disconnecting the rear sensor then the front and see if the message goes away.
i have both my sensors disconnected and no adverse messages Duncan
-----------------------------------------------------
If I'd known I was going to be so thirsty this morning I'd have drunk more beer last night.
FFRR Autobiography 4.4 SDV8 MY17
D4 HSE MY13 SOLD
FFRR 3.6 Vogue TDV8 SOLD
D4 HSE MY10 SOLD
D4 SE TECH MY15 SOLD
D4 XS MY12 SOLD
D4 HSE MY10 SOLD
D3 HSE MY06 - Re-Cycled Worldwide
|
| 28th Oct 2009 3:40 pm |
|
|
beast
Member Since: 15 Aug 2009
Location: UK
Posts: 5
 
|
If pads wear so that pad warning is activated then the pad warning sensor wire is cut by the rotation of the disc .... no electrical circuit means ...pad warning on... new sensor needed!!!
|
| 29th Oct 2009 8:54 am |
|
|
AndrewS
Tarquin of the Desert
Member Since: 06 May 2005
Location: Y...... because I can
Posts: 10441
|
| Re: Chaned pads but Warning still on dash |
|
Tony686 wrote: Have replaced the sensor,
beast wrote:new sensor needed!!!
Hi Chap have you damaged the new sensor  In the Beginning there was nothing, which exploded.
|
| 29th Oct 2009 10:10 am |
|
|
catweasel
Member Since: 05 May 2006
Location: Bundaleer
Posts: 4805
|
beast wrote:If pads wear so that pad warning is activated then the pad warning sensor wire is cut by the rotation of the disc .... no electrical circuit means ...pad warning on... new sensor needed!!!
I believe the disc bridges out the wiring when worn so causes an input to the appropriate ECU. disconnection open ccts them removing the warning.
|
| 29th Oct 2009 12:54 pm |
|
|
PaulP
Member Since: 04 May 2007
Location: Barcelona
Posts: 4317
|
A 'worn' wear sensor will present an open circuit to the IP which it detects as worn pads and flashes up the warning message/bing (or was it bong).
Either way, it sounds like what you've been told......either the rear pads are also worn or you've damaged the sensor when installing the front pads.
The sensors are very brittle once they've been on the car a while, but new ones should take a knock or two without falling apart. 2006 Discovery 3 TDV6 SE Auto Buckingham Blue
2007 Golf GT DSG
|
| 29th Oct 2009 2:13 pm |
|
|
catweasel
Member Since: 05 May 2006
Location: Bundaleer
Posts: 4805
|
PaulP wrote:A 'worn' wear sensor will present an open circuit
you are correct and my initial finding wrong. the two sensors are wired in series and when either go open the amber dash light illuminates. so it could be a faulty damaged new sensor or the other pads are low or the brake fluid could be low.
|
| 29th Oct 2009 2:14 pm |
|
|
10forcash
Member Since: 09 Jun 2005
Location: Ubique
Posts: 16534
|
Or the sensor could not be connected properly to the vehicle loom?
|
| 29th Oct 2009 2:35 pm |
|
|
AndrewS
Tarquin of the Desert
Member Since: 06 May 2005
Location: Y...... because I can
Posts: 10441
|
When I had the annoying bing or bong I simply cut the sensor off and joined the wires together. Bit of a bodge I know but I had silence in the cab on the way to get new parts In the Beginning there was nothing, which exploded.
|
| 29th Oct 2009 2:41 pm |
|
|
craig
Member Since: 08 Aug 2006
Location: Home of LR.
Posts: 2545
|
Did exactly the same as AndrewS, when my cable snapped. Shorted the cable onto itself and annoying bong/bong went.
Check the loom as TFC has said.
|
| 29th Oct 2009 3:44 pm |
|
|
maltesenick
Member Since: 25 Jul 2008
Location: Tullibody - where the F's that??
Posts: 148
|
At my last service the dealership "advised" me that my front pads were worn about 80% and had about 8000mls life left in them. Is there actually a specified depth/thickness measurement that can be checked ( on the rear as well as the front ) to allow changing just before the warning comes up and thus cuts out the need for replacing the sensor cable/s as well as the pads?
|
| 3rd Nov 2009 5:19 am |
|
|
Roel
Member Since: 16 Aug 2008
Location: home
Posts: 1215
 
|
I believe that the sensor gets worn if the pads are down to about 3 to 4 mm.
So with checking the pads regulary you can prevent wearing through a sensor. Or buy them cheap at ebay.
You have to check your brake pads anyway as the sensors are only at one pad in the back and one in the front so only 2 out off the 8 brake pads.
The pads on one axle should wear more or less equal but if you car gets older you will see that's not always the case. Roel
1997 Camel Trophy Disco ex-P101JWK (traded it for a Britains 42101)
1984 90 TD5
2005 G4 Disco 3 BN55WPT
Also member of club MTR
and Club Faultmate
Interested in my 4x4 history see my website: www.mudmachine.webklik.nl
Sorry it's in Dutch and with google translator it gets funny.
|
| 3rd Nov 2009 12:10 pm |
|
|
maltesenick
Member Since: 25 Jul 2008
Location: Tullibody - where the F's that??
Posts: 148
|
Thanks for that Roel, looks like its time to get the micrometer and the spectacles with the thick lenses out!
|
| 4th Nov 2009 8:36 am |
|
|
Vidvandre
Member Since: 03 Feb 2011
Location: Oslo
Posts: 21
 
|
Have same problem now.
Changed brake pads and sensors front and rear.
No 'bing' but still a yellow warning light and message.
Any ideas? Anything I have to get reset in ECU?
|
| 11th Apr 2012 6:06 pm |
|
|
bp
Member Since: 06 Jan 2010
Location: Stuck On The High Road
Posts: 1325
|
sounds daft but check you plugged them in properly they can be a bu66er Don’t worry it is supposed to sound like that...honest
|
| 11th Apr 2012 6:33 pm |
|
|
