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Old 11-15-2010, 10:38 PM   #1
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ABS Light

While driving my motorhome the other day the ABS light started coming on intermittently. It went on and off irregularly several times while driving. The breaks functioned normally. Anyone know what this means?

Anyone have the service manual for the HydroMax break system?
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Old 11-15-2010, 10:59 PM   #2
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It means there is a problem in the ABS system. Nothing wrong with the brakes, but the ABS function will not work, so under extremely hard braking, wheel lock up is possible. Get it scanned. It is usually a wheel sensor, or a broke wire near a wheel sensor. Could also be an under inflated tire. And just for clarification, "breaks" are what you take at work. Brakes are what stops your vehicle.
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Old 11-15-2010, 11:41 PM   #3
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Thanks for the grammar help. LOL

OK anyone have any info the ABS unit. I haven't seen anything about it anywhere so I assumed it was part of of HydroMax system. Does it come with the chassis?

When you say "have it scanned" are you referring to reading the stored errors in the ODB II? I've been looking for an excuse to buy an ODB reader.
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Old 11-16-2010, 10:19 AM   #4
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Quote:
Originally Posted by jsutherl View Post
Thanks for the grammar help. LOL

OK anyone have any info the ABS unit. I haven't seen anything about it anywhere so I assumed it was part of of HydroMax system. Does it come with the chassis?

When you say "have it scanned" are you referring to reading the stored errors in the ODB II? I've been looking for an excuse to buy an ODB reader.
you will need an OBDII scanner with the proper software for your rig. If the ABS lilght is on there is an electrical problem with the ABS portion of the brake system. Could be a wheel sensor or even the ABS computer may have a problem.

As for the scanner it will only give you the code, you may still need to do further troubleshooting to determine the cause of the problem that is setting the code.
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Old 11-16-2010, 11:02 AM   #5
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If it is intermittent it is most likely a loose connector or a wire in the wiring harness that has rubbed through the insulation. Since the ABS light is not on constantly there is also a good chance there are no codes set.
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Old 11-16-2010, 11:28 AM   #6
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Don't be quick to buy that scanner. Just an OBD scanner won't do it. You will have to get one that will do ABS Diagnostics for you chassis. That usually adds at least $100 more.
It will give you the code, but you will have some diagnostics to do. Any decent garage should be willing to scan it for $20 or so. Not sure if Advance Auto or the others can do ABS, but they will do a "Check Engine" light for free, and give you the code.
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