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Old Aug 28, 2016 | 07:23 PM
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Default Brake System

I have a 2009 V-Rob Muscle, with only 6k miles on it. About a month ago the back brake pedal would not go in, so I put all my weight on it and still nothing. I believe I have narrowed it down to the ABS system. The master cylinder is good, the caliper is good, and the lines are good. I broke each section apart separately and narrowed it down. If I put pressure on the pedal and break the seal on the line going into the ABS block thing it instantly gives and sprays fluid, if I do the same but on the line coming out of that block going to the caliper I get nothing.

First time posting, any help at all would be much appreciated.
 
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Old Aug 28, 2016 | 07:32 PM
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Sounds like your ABS modules has frozen and failed. No fix other than replacing, or converting to Non-ABS.
 
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Old Aug 28, 2016 | 08:45 PM
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That is what I was thinking but I wanted a few secons opinions before I started buying parts. Thanks for your help!
 
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Old Aug 29, 2016 | 03:38 AM
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No worries man.
 
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Old Aug 29, 2016 | 07:00 AM
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Originally Posted by skid_pimp
Sounds like your ABS modules has frozen and failed. No fix other than replacing, or converting to Non-ABS.
And another one. But all the guys here "in the know" say this doesn't happen. All those statistics don't change the fact that the OP lost one of his brakes.

OP,

Report the failure to NHTSA, there is an open investigation.

You'll need an ABS HCU which is a dealer only item (in the neighborhood of $600.00).
 
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Old Aug 29, 2016 | 08:02 AM
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Originally Posted by Nomadmax
And another one. But all the guys here "in the know" say this doesn't happen. All those statistics don't change the fact that the OP lost one of his brakes.

OP,

Report the failure to NHTSA, there is an open investigation.

You'll need an ABS HCU which is a dealer only item (in the neighborhood of $600.00).
Dude parts fail, in planes trains and automobiles too. That particular part, can fail in three different ways. Front Brake only (like his case), rear brake only, or in the middle where both would still work. NHTSA is welcome to investigate, as are you are welcome to complain. But there is no perfect part that can never fail....
 
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Old Aug 29, 2016 | 09:27 AM
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Originally Posted by skid_pimp
Dude parts fail, in planes trains and automobiles too. That particular part, can fail in three different ways. Front Brake only (like his case), rear brake only, or in the middle where both would still work. NHTSA is welcome to investigate, as are you are welcome to complain. But there is no perfect part that can never fail....

You're right, except...

When everybody else's ABS systems fail they don't reduce residual braking capacity, they only lose the ABS function. This isn't a manufacturing issue, it's an engineering issue. More importantly, it's unacceptable and creates a hazard for anyone who is affected.
 
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Old Aug 29, 2016 | 10:03 AM
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Originally Posted by Nomadmax
You're right, except...

When everybody else's ABS systems fail they don't reduce residual braking capacity, they only lose the ABS function. This isn't a manufacturing issue, it's an engineering issue. More importantly, it's unacceptable and creates a hazard for anyone who is affected.
Akwardly enough, not only am I a mechanic that knows better than your statement, but I also know how to Google. If you care to give it a try, you'll see that when ABS modules fail, they can fail in the three ways I described above. With slight variations depending on the manufacturer of the module. Keep in mind it is uncommon in modern times for an auto or motorcycle manufacturer to design and test their own module, they most often utilize one from a speciality manufacturer that suits their needs. Keep in mind that it is extremely rare that brakes, or any other hydrolic component for that matter, suddenly fails, they almost always give indications of impending failure long before they fail, that often goes ignored by the operator... That of course is assuming use, if the component goes unused, then all bets are off, especially if the unused component utilizes fluid that is hygroscopic.
 
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