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ABS WARNING LIGHT
Posted: Sat Aug 09, 2008 9:20 pm
by Quanger
Car failed MOT for warning light/operation defective on a 1991 325i
How do you rectify this fault?
Thanks for any replies
Re: ABS WARNING LIGHT
Posted: Sat Aug 09, 2008 9:22 pm
by march109
Posted: Sat Aug 09, 2008 9:23 pm
by e30325itourer
in what way defective?staying on all the time or not coming on with ignition?
Re:
Posted: Sat Aug 09, 2008 9:24 pm
by march109
Read the link for common problems and work arounds.
Re:
Posted: Sat Aug 09, 2008 10:00 pm
by Quanger
Not coming on with ignition.
Re:
Posted: Sat Aug 09, 2008 10:05 pm
by march109
Someone has disconnected it then or the bulb has blown as per article,
The article also in a roundabout way tells you how to get round it too. I know I wrote the article.
Re:
Posted: Sat Aug 09, 2008 10:41 pm
by Quanger
Re:
Posted: Sat Aug 09, 2008 10:44 pm
by march109
Re:
Posted: Sat Aug 09, 2008 10:44 pm
by Jon_Bmw
Usually signs of previous owners bodges. Sounds like he had a wheel sensor fault, which made the abs come on intermitantly and can seriously reduce braking force
He then removed the relay to disengage it and took the abs light out of the dash to 'cover' his tracks.
Thats my guess anyway. Would you like to know the bodge to get it through the MOT as its possibly a sader issue than just replacing a wheel sensor.
Re:
Posted: Sat Aug 09, 2008 10:46 pm
by march109
Couldn't tell your pictures don't work for me, but some basic info would help!
Age of car please?
Any relays at all under the cover on the pump?
So far there is nothing here which isn't covered in the article link I posted.
Re:
Posted: Sat Aug 09, 2008 10:50 pm
by Quanger
Jon_Bmw wrote:Usually signs of previous owners bodges. Sounds like he had a wheel sensor fault, which made the abs come on intermitantly and can seriously reduce braking force
He then removed the relay to disengage it and took the abs light out of the dash to 'cover' his tracks.
Thats my guess anyway. Would you like to know the bodge to get it through the MOT as its possibly a sader issue than just replacing a wheel sensor.
Yes please
Re:
Posted: Sat Aug 09, 2008 10:53 pm
by march109
Quanger wrote:Jon_Bmw wrote:Usually signs of previous owners bodges. Sounds like he had a wheel sensor fault, which made the abs come on intermitantly and can seriously reduce braking force
He then removed the relay to disengage it and took the abs light out of the dash to 'cover' his tracks.
Thats my guess anyway. Would you like to know the bodge to get it through the MOT as its possibly a sader issue than just replacing a wheel sensor.
Yes please
AGAIN its in the article!
Wire the abs bulb to the battery bulb it will behave just as expected (but not actually mean anything!)
Re:
Posted: Sat Aug 09, 2008 10:55 pm
by Brianmoooore
Would be a better idea to get some relays and a bulb, plug them in, and see what happens.
The original reason for failure will be flagged up for the tester to see when the car is submitted for a retest, so the usual bodge may not be successful.
Re:
Posted: Sat Aug 09, 2008 10:56 pm
by Jon_Bmw
Quanger wrote:Jon_Bmw wrote:Usually signs of previous owners bodges. Sounds like he had a wheel sensor fault, which made the abs come on intermitantly and can seriously reduce braking force
He then removed the relay to disengage it and took the abs light out of the dash to 'cover' his tracks.
Thats my guess anyway. Would you like to know the bodge to get it through the MOT as its possibly a sader issue than just replacing a wheel sensor.
Yes please
And this is why cars fall apart!
Not that I would ever condone such a thing...
As march said, you can do it to the oil pressure one if you'd prefer.
Posted: Sat Aug 09, 2008 11:01 pm
by Quanger
is the pic working now, are my relays missing?
Re:
Posted: Sat Aug 09, 2008 11:03 pm
by march109
yes, also looks to be the later system.
Plug the relays in and watch the light come on instantly and never go out again.
Re:
Posted: Sat Aug 09, 2008 11:06 pm
by Quanger
ok thanks guys. think i know what to do now.
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