ABS making banging sound

by **Rad-Daljac** » Fri Jul 17, 2015 5:36 pm

Hey guys!
Having a bit of a problem with my Liberty that getting to worry me so in need of advice if anyone has encountered this before.
I haven't really been driving my car recently due to getting a lift to work but the other night when I did drive it I went to brake leaving the driveway and the brake peddle started to bounce back up and made a really loud banging bouncing sound every time I tried to brake. I continued to drive the car to try identify what it was but then it stopped and the traction and ABS lights came on in the dash. I took it to a mechanic that I know well and he plugged in his snap on diagnostic tool and it said no error code match which was a massive worrie for my self. But also on the tool it shows each wheels individual wheel speed and it said the rear left wheels speed is going a ridiculous speed compared to the other three wheels.
What could be a cause and what is the best solution?

by **McDoof** » Fri Jul 17, 2015 7:05 pm

AFAIK ABS codes do not come up on normal diagnotic tools. I would say that you may have a failed abs sensor or tone ring (a magnetic ring attached to the wheel hub)
I had a failed sensor a while ago and the brakes made a knocking noise until the ABS light came on. It would reset back each time I started the car.

by **Rad-Daljac** » Sat Jul 18, 2015 6:30 am

McDoof wrote:AFAIK ABS codes do not come up on normal diagnotic tools. I would say that you may have a failed abs sensor or tone ring (a magnetic ring attached to the wheel hub)
I had a failed sensor a while ago and the brakes made a knocking noise until the ABS light came on. It would reset back each time I started the car.

Is the ABS sensor on the hub? Or seperate
How much did it cost you to repair?

by **McDoof** » Sat Jul 18, 2015 8:40 am

The sensor is separate from the hub. It is attached through the hub assemble behind the brake disk like a plug. There is a 10mm bolt holding it in. I replaced mine with a used one from the local breakers for NZ$120
The part looks like this

Its about a 15 min job to replace

by **Rad-Daljac** » Sat Jul 18, 2015 11:02 am

McDoof wrote:The sensor is separate from the hub. It is attached through the hub assemble behind the brake disk like a plug. There is a 10mm bolt holding it in. I replaced mine with a used one from the local breakers for NZ$120
The part looks like this

Its about a 15 min job to replace

Thanks heaps man! Very helpful!
I'll let you know how I go

by **BillyCorgi** » Sat Jul 18, 2015 12:45 pm

The ABS codes are readable using Subaru Select Monitor or FreeSSM.
I have read ABS codes using FeeSSM.

by **McDoof** » Sun Jul 19, 2015 6:18 pm

I think on the post FL you can get the ABS fault codes from the dash cluster too. Check this post
http://www.subaruoutback.org/forums/99-do-yourself-illustrated-guides/19053-06-09-how-read-diagnostic-trouble-codes-dtcs.html#/forumsite/20514/topics/19053

ABS making banging sound

ABS making banging sound

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