ABS fault light

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Tigdlo
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ABS fault light

Post by Tigdlo » Thu May 28, 2020 12:49 pm

My Puma has been parked off the road for over a year now since the last MOT expired, and I have periodically started it up and run it until running temperature was reached. Each time I’ve done this, all the dash warning lights have behaved normally.
The other day, I thought it would be a good idea to jack each front wheel up in turn, and run the car in gear with the brakes lightly applied in order to clean the very light rust from the front discs. Unfortunately, the ABS and traction control lights are now showing on the dashboard.
My question is, when I eventually get to drive the car for it’s next MOT, will the lights sort themselves out, or have I got to reset anything?
Thanks.
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red
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ABS fault light

Post by red » Thu May 28, 2020 1:54 pm

You need to get over 15mph for the ABS self test to complete. Potentially when you drive and this happens the lights will go out.
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Tigdlo
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ABS fault light

Post by Tigdlo » Thu May 28, 2020 2:05 pm

Thanks red, that is what I am hoping.
It would be rather awkward arriving for the MOT with the warning lights on!
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grogee
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ABS fault light

Post by grogee » Thu May 28, 2020 2:55 pm

I seem to remember mine doing something like this when I span the front wheels in the air and not the rears. I think it got confused and threw the light. Then cleared when I drove it properly on the road again.
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Wild E. Coyote
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ABS fault light

Post by Wild E. Coyote » Thu May 28, 2020 5:08 pm

Yes, the system monitored that front wheels have been spinning, but the rears not. ABS does not know that the car was jacked up and so concludes that the rear sensors are potentially dead. Hence the warning light. Once you reach 20 kph speed, the ABS will trigger self test and erase the DTC and put out the warning light
Last edited by Wild E. Coyote on Thu May 28, 2020 8:14 pm, edited 1 time in total.
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Tigdlo
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ABS fault light

Post by Tigdlo » Thu May 28, 2020 7:21 pm

Thanks all!
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Wild E. Coyote
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ABS fault light

Post by Wild E. Coyote » Thu May 28, 2020 8:12 pm

Wrong button, no post!
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zinc2000
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ABS fault light

Post by zinc2000 » Wed Jun 03, 2020 12:04 pm

Just jumping in here as I have similar ABS problem
Replaced front sensors as one had shorted out by rubbing on wheel, took car down track, lights still on
Checked rear sensors and the rings in the drums were caked in crap, cleaned, replaced but lights still on
Does the car need to move and perform the self check to put the lights out following a fault or should the lights go out as soon as fault is fixed
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red
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ABS fault light

Post by red » Wed Jun 03, 2020 1:30 pm

afaik it needs to re-perform the test to put the light out
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Wild E. Coyote
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ABS fault light

Post by Wild E. Coyote » Wed Jun 03, 2020 5:08 pm

red wrote:
Wed Jun 03, 2020 1:30 pm
afaik it needs to re-perform the test to put the light out
Yes, you need to reach 20 kph for the system to perform self test and then it will put the light out if all is as it should be
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zinc2000
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ABS fault light

Post by zinc2000 » Mon Jun 08, 2020 5:34 pm

Thanks guys, guess I need to uncover it again then and see if I can get the light out before I give up and scrap it!
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red
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ABS fault light

Post by red » Tue Jun 09, 2020 9:24 am

You know we don't appreciate the 's' word here zinc :o
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