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Brake pad warning light - problem
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CarGuru > Open discussion > Brake pad warning light - problem 1 May 2005 16:28:46

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Brake pad warning light - problem

Jim Lad 1 May 2005 16:28:46
 I have a Rover 75 2.0 CDT and the brakepad warning light does not extinguish
The pads are new and the leads and connections to the pads are ok
Any ideas re likely fault may be ?

Regards to all and TIA



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Jim Lad 30 April 2005 00:22:04 permanent link ]
 I have a Rover 75 2.0 CDT and the brakepad warning light does not extinguish
The pads are new and the leads and connections to the pads are ok
Any ideas re likely fault may be ?

Regards to all and TIA




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SimonJ 30 April 2005 01:30:18 permanent link ]
 
I have a Rover 75 2.0 CDT and the brakepad warning light does not
extinguish> The pads are new and the leads and connections to the pads are ok> Any ideas re likely fault may be ?>
Its not a dealer reset thing is it?


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Johnny 30 April 2005 02:30:50 permanent link ]
 "Jim Lad" <JimLad@somewhere.c­om> wrote in message
news:15WdncAzr-vyCu­_fRVnyjQ@eclipse.net­.uk...>I have a Rover 75 2.0 CDT and the brakepad warning light does not >extinguish> The pads are new and the leads and connections to the pads are ok> Any ideas re likely fault may be ?>
Regards to all and TIA>
I'm not at all familiar with the Rover 75, but I'd guess that they use a
similar system to what BMW use (not that I'm familiar with those either!!!).
BMWs have sensors in the pads that must be replaced (unless you changed your
pads before the sensor triggered).


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Jim Lad 30 April 2005 13:39:15 permanent link ]
 I'm told that it isn't ... but I will check with main dealer
Incidentally I was assuming that the circuit used the worn pad as a
connection to earth but apparently it works the opposite way.
i.e. A worn pad creates an open circuit

"SimonJ" <me@mine.net> wrote in message
news:d4u91a$dfk$1@n­wrdmz02.dmz.ncs.ea.i­bs-infra.bt.com...>>­ I have a Rover 75 2.0 CDT and the brakepad warning light does not> extinguish>> The pads are new and the leads and connections to the pads are ok>> Any ideas re likely fault may be ?>>
Its not a dealer reset thing is it?>


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Jim Lad 30 April 2005 13:43:58 permanent link ]
 Hmm ... well that is something I had not even considered
The light came on when I was working away from home ... Not sure if it was a
fault or worn pads
I dropped vehicle into ATS and they changed the pads and also the front
discs (they were scaled)
The light didn't extinguish and they suggested it was a faulty connection on
the front pad - I have checked it and it seems ok


"Johnny" <n@spam.com> wrote in message
news:4272b5b9_3@mk-­nntp-2.news.uk.tisca­li.com...> "Jim Lad" <JimLad@somewhere.c­om> wrote in message > news:15WdncAzr-vyCu­_fRVnyjQ@eclipse.net­.uk...>>I have a Rover 75 2.0 CDT and the brakepad warning light does not >>extinguish>> The pads are new and the leads and connections to the pads are ok>> Any ideas re likely fault may be ?>>
Regards to all and TIA>>
I'm not at all familiar with the Rover 75, but I'd guess that they use a > similar system to what BMW use (not that I'm familiar with those > either!!!). BMWs have sensors in the pads that must be replaced (unless > you changed your pads before the sensor triggered).>


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Dave Plowman 30 April 2005 15:04:51 permanent link ]
 In article <4272b5b9_3@mk-nntp­-2.news.uk.tiscali.c­om>,
Johnny <n@spam.com> wrote:> I'm not at all familiar with the Rover 75, but I'd guess that they use a> similar system to what BMW use (not that I'm familiar with those> either!!!). BMWs have sensors in the pads that must be replaced (unless> you changed your pads before the sensor triggered).

On my E39 BMW, after changing pads and sensors, you have to leave the
ignition on without starting the engine for a few minutes to re-set the
warning light. If you don't it will take several days - by adding up the
times the ignition is on before starting to make up the couple of minutes.

--
*A day without sunshine is like... night.

Dave Plowman dave@davenoise.co.u­k London SW
To e-mail, change noise into sound.
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SimonJ 30 April 2005 15:15:03 permanent link ]
 
Hmm ... well that is something I had not even considered> The light came on when I was working away from home ... Not sure if it was
fault or worn pads> I dropped vehicle into ATS and they changed the pads and also the front> discs (they were scaled)> The light didn't extinguish and they suggested it was a faulty connection
the front pad - I have checked it and it seems ok>
Ah, ATS, that explains it! They did fit new sensors, didn't they? (wear
sensors wear with the pads, and are not reusable.)

Take it back to them, let them sort it.


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Dave Plowman 30 April 2005 16:32:50 permanent link ]
 In article <8NKdnb63dt_wzu7fRV­nygQ@eclipse.net.uk>­,
Jim Lad <JimLad@somewhere.c­om> wrote:> I'm told that it isn't ... but I will check with main dealer> Incidentally I was assuming that the circuit used the worn pad as a > connection to earth but apparently it works the opposite way.> i.e. A worn pad creates an open circuit

If it's the same as BMW you have a sort of electrical wire loop covered in
plastic. This fits into a cutout in the pad, but is about the height of
the minimum pad thickness. When the pad wears enough, the disc cuts
through the plastic and earths the wire, latching the light on. The idea
of the loop is that it forms part of the warning light 'hold off' circuit.
Break the loop - by say not fitting a sensor - and the light will stay on.

--
*The man who fell into an upholstery machine is fully recovered.*

Dave Plowman dave@davenoise.co.u­k London SW
To e-mail, change noise into sound.
Add comment
Grizzly 30 April 2005 18:11:06 permanent link ]
 On Sat, 30 Apr 2005 12:04:51 +0100, "Dave Plowman (News)"
<dave@davenoise.co.­uk> wrote:
In article <4272b5b9_3@mk-nntp­-2.news.uk.tiscali.c­om>,> Johnny <n@spam.com> wrote:>> I'm not at all familiar with the Rover 75, but I'd guess that they use a>> similar system to what BMW use (not that I'm familiar with those>> either!!!). BMWs have sensors in the pads that must be replaced (unless>> you changed your pads before the sensor triggered). >
On my E39 BMW, after changing pads and sensors, you have to leave the>ignition on without starting the engine for a few minutes to re-set the>warning light. If you don't it will take several days - by adding up the>times the ignition is on before starting to make up the couple of minutes.

It must work in a similar way on the Audi A6. When the front brake
pads were changed the light stayed on until the following day.

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John 1 May 2005 16:28:46 permanent link ]
 
"Jim Lad" <JimLad@somewhere.c­om> wrote in message
news:15WdncAzr-vyCu­_fRVnyjQ@eclipse.net­.uk...>I have a Rover 75 2.0 CDT and the brakepad warning light does not >extinguish> The pads are new and the leads and connections to the pads are ok> Any ideas re likely fault may be ?>
Regards to all and TIA>
I'm not familiar with the Rover, but the brake fluid level sensor is worth a
look. A lot of cars use the same w/light for pads and fluid level.

JOhn


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CarGuru > Open discussion > Brake pad warning light - problem 1 May 2005 16:28:46

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