Mud-club
Vehicle & Technical => Discovery => Topic started by: scooby on January 19, 2008, 14:15:57
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Just changed brake pads on my 96 disco and the abs goes of then comes back on and stays on.
It started to happen when the pads got low the other day. so replaced pads and thought light might go out.
But no it still does the same goes off then comes back on.
Is their anything i sjould look at r does it need to be rest as low pads. If so can you rest it yourself or does it have to go in to be done. Not sure thou if the abs light just come on the same time my pads went low. But i thought to myself that light also indectes its brake pads etting low. Apart from this light the car seems ok and as i say it only started to do this when pads were low.
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abs light or pad warning light coming on?
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It has the abs inside a round disc and shoes on the outside.
not sure if its the brake waring light as pads were low and this is the only light that come up.
But it is the abs light. not sure if it works both.
was told it was the abs light and that it could be a wire broken but was also take it in and have a fualt reader put on it.
but seems funny to come on and stayed on since the pads went low.
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may be a sensor just wants looking at?
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THE ABS light is not the same as the pad wear light. There might also be a handbrake warning (notoriously dodgy things) and a low fluid level warning. The handbrake and low fluid might be the same light, but a few things to check.
The ABS light should come on when you turn on the ignition and stay on until you have reached 5mph at which point it completes it's self-test.
If this light is the one coming on you need to do a blink test to determine what faults it has logged (and clear them) then rectify the fault and see if all is then well.
Common faults are sensors out of range, caused by muck in the sensor ring on the back, loose wheel bearings on any of the 4 wheels (though I'd guess at the front ones) or wiring faults inthe sensors or loom.
Sometimes you find the replacement sensors had a new length of loom because of faults in the loom itself.
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My handbrake light and low level light is in red at the bottom light left handside of the dash board i knw this as i went through this a few weeks ago. But was told pads and abs light was in one.
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ABS lamp will be amber as its got a safe mode and so you can still drive with it lit. Brake wear/handbrake lamp is red as you should stop and investigate with it lit.
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I think the ABS light has to be on it's own, IIRC.
Does the Disco have the same instruments as the soft dash RRC, if so then I think it is, TBH I don't pay much attention but the ABS light is top centre and ther TC light top right. No idea where the brake pad warning is.
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if the light on your dash is red then get it checked straight away, if it is amber then it is there as a warning that something has failed and you need to get it checked at the earliest opportunity. If the abs wng light is on whilst you are driving then you do need to get it checked. although abs circuits generally fail safe, ie, you still have braking without abs, i have discovered with having many faults on my abs that once the light is on you can get unusual brake applications when trying to stop . not quiet fail safe in the disco's case. it is very simple to check but you need to have half an hour or so to go through the process. there is a thread on this site posted some time ago where i got all my info from, if i can find it I'll post a link to it.
to cut a long story short, generally the fault will lie with one of the 4 sensors. either an open circuit in the sensor harness, or it isn't sitting correctly in its housing hence the gap between the end on the sensor and the teeth it picks up its pulse from is too big, or simply the sensor has failed. they are very easy to change but you do need to confirm the fault first as they are not cheap unless you can chance it with a second hand one. RANGE ROVER DO FIT as well as i currently replaced both my front 2 with range rover ones from a nice bloke off this forum.
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http://www.mud-club.com/forum/index.php/topic,48167.0.html (http://www.mud-club.com/forum/index.php/topic,48167.0.html)
hopefully i have posted this link correctly. having checked mine i can assure you there are differences in the colour of wires etc so be careful. if you need more help let me know.
Mick
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My ABS light was staying on and it turned out to be the sensors
A little tap on the top of them (helps them seat correctly) and all is well again
:afro:
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tryed the whole lot know even cleaning the sensors up gone over the whole car and light now does not even go off like it did and comes back instead it on all the time. I think i wll have to find a man with a laptop and pay out to see what that says about it.
As its an amber abs wrn light would it be safe to drive around.
Thanks for the help.
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My abs was frightening-it just would judder when ever it felt like in nomal conditions.
The arse i had brought it off had taken the bulb out.
In the end i just un-pluged the pump under the bonnet and its been fine--no abs though!
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And no brakes either!
If you have a fault in an ABS system you must get it fixed. It should not pass the MOT without it and it certainly isn't roadworthy.
The BAS system on Disco 1 can easily be diagnosed at home using the blink test, it's in the workshop section now.