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Old 09-30-2012, 11:06 PM   #1
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Angry ABS light

We have had our 2001 Monaco Diplomat thoroughly checked over mechanically and although the brake system is fine, the abs light won't go off. Anyone else had this problem and what do I do? Have been to a certified shop(2) and they can't shut off the light either.
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Old 10-01-2012, 04:45 AM   #2
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It is more than likely a wheel sensor. Very common for that year unit,just need to have agood tech check them
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Old 10-01-2012, 07:33 AM   #3
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A 'certified' shop not being able to kill a ABS light? Shocking..

You need to find one that can (and care) actually work on the brakes... The light is not on for just no reason. Something is wrong regardless of what the lazy boys say..
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Old 10-02-2012, 11:50 PM   #4
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ABS LIght

Hear tell that if the tires are miss matched or differ in air pressure past a certain threshold or if you drive over rough road, the ABS system shuts off. The brakes are still good but the ABS system is shut off. Generally when driving on dirt roads or unpaved surface the ABS will turn off. The idiotic system design requires one to cycle the ignition off and on after reaching the paved smooth road for it to turn on again!

All the above is barring any inherent mechanical or electronic issues with the system itself.
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Old 10-03-2012, 12:08 AM   #5
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We have a 2005 Southwind doing the same thing. ABS light came on about 5000 miles ago. The entire system has been checked. Yep. All's well. But that light is still on. Was told it was just a sensor (Well, duh. How bout we fix it while its in the shop? Wasn't on work order. Duh.) Anyway.

I know the ABS is working. We had the opportunity to check it out. A pick up truck came at us from across the median and I locked er' down at 65 MPH. Six full sliding tires for about 100 feet straight as an arrow. And a change of drawers. And put the dinette set back where it belongs.

But the light still comes on.
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Old 10-03-2012, 09:08 AM   #6
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Tires dont slide with ABS working..
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Old 10-04-2012, 02:39 AM   #7
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Oh. OK I lied.
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Old 10-04-2012, 12:07 PM   #8
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Originally Posted by SteveCal View Post
Oh. OK I lied.
Didnt say you lied.. I said the ABS wasnt working...
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Old 10-04-2012, 12:14 PM   #9
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Maybe the directions need to be followed in this PDF.
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Old 10-04-2012, 12:20 PM   #10
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The ABS design is such that it will disable itself after a hick up but keep the brakes fully functional but in the old school way. If on ice pump and if you want to be able to steer while braking then don't lock up therefore pump again. When its working it in essence is pumping to the max limits without out fully locking up the brakes there by leaving you with a steerable vehicle. The crazy system from the late 90s on is/was such that while leaving a CG it would disengage due to rough road and then stay that way! Same generally happens if you pull off the highway and there are some rough spots the system again decouples, it has done the same on rough patches of the interstate as well.

The ABS designers should have made the system so that after a threshold of smooth surface the system should reset to operational status. In most of the vehicles I have seen the system stays on stand by till the next cycle. I believe the latest new systems in cars now reset to operational status and if not then give you a fault notice for diagnosis. Mercedes stability program button will turn the system off for a set amount of time only and then re-engage by itself.
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Old 10-04-2012, 12:29 PM   #11
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Quote:
Originally Posted by 007";1329509]Maybe the directions [B][URL="http://www.irv2.com/forums/f22/both-abs-and-brake-fluid-lights-are-on-120016.html#post1135592
need to be followed in this PDF.[/URL][/B]
Looks like the brake system version of the cold re-boot!
Its amazing how many times similar dances have to be performed for the cable or satellite company. Thankfully lately the computer operating systems have been rather stable. The modem and routers still suffer from unstable processes.

The ABS operations version of the cold boot !
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Old 10-04-2012, 12:31 PM   #12
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OO7 that there is a cold boot for the whole ABS system including the giggle the box or hit it on the side or tap it with a stick procedure. Great find. Thanks will have to remember it.
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Old 10-14-2012, 10:49 AM   #13
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I've seen an ABS light come on if the system voltage gets high.
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