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Old 05-01-2006, 05:14 PM   #1
TKDKracker007
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Default ABS light wierdness.. Faulty ABS Sensor?

I searched and came up with nuthin.

My ABS light will come on sporadically, maybe every 4th-5th time I drive my car. It will come on, stay on for a drive or two, and then go off after driving again. I reset my ECU to clear it, and popped up after 130ish miles. Went off again.

Where is the sensor, in the rear end maybe? I recently did my rear pads, and there was a clip on the pass side rear pad. I have no idea what this was, I just put it on the new pad anyway. The light was never an issue prior to the pads being changed.

Ideas? Car is an '02 WRX, 54k miles. Rears were original and were just starting to get thin.

Thanks
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Old 05-01-2006, 08:42 PM   #2
TKDKracker007
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C'mon, nobody else has had this issue?
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Old 05-04-2006, 11:52 PM   #3
Patrick Olsen
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You can have the dealer pull the code from the ABS unit, although it apparently takes a bit more work than pulling the ECU codes for the engine. Unplugging the battery does not clear the codes from the ABS unit (or at least it didn't in my case - when they pulled the codes, it still showed a bad left front sensor, despite the fact I had replaced it a while back and had definitely unplugged the battery in the interim).

I've had an intermittent ABS light on mine for about 5 months now. It's very intermittent, only seems to come on maybe once a month or so. I had the codes pulled a few months back and apparently I have a relay going bad, but it's so infrequent that I haven't bothered to fix it yet.

Note that (from what I was told) the ABS light must be on for them to pull the codes. I guess the ABS unit will store old codes until it's reset by the dealer, but they can't pull the codes unless the light is on. Now that I think about it, if that is true, if your intermittent light isn't on when you take it to the dealer, just unplug one of the ABS wheel sensors and that'll turn it on for sure.

Pat Olsen
'97 Legacy 2.5GT sedan
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Old 05-05-2006, 12:07 AM   #4
BonesXMahones
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When changing the rear pads, that "clip" is simply an audible signal that your brake pads are low and it's time to change them once more. I would be suspect and try to remember if you hit something, crimped something, or knocked something out of place. Or do what Pat says and take it to the dealer and try and get the code pulled. Maybe it doesnt even have anything to do with your pads being changed and a relay is just starting to go. I would start with where you worked and just look around simply becuase it's free!
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Old 05-05-2006, 11:49 AM   #5
TKDKracker007
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Thanks for the replies.

I took another look at everything and all appears status-quo. The light hasn't come back on since I posted originally, so I guess I'll just let it go for now. Being as it's intermittent and all, no biggie.
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Old 05-05-2006, 11:33 PM   #6
ninethreeeleven
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There was an ABS ECU "recall" for 2002 model WRXs. It's not really a recall, they call it a Notice or Posting or something similar (they = Subaru).
I had a problem with my ABS, mainly the ABS kicked in when it shouldn't. When I would come to a stop and there were bumps (NY potholes) I would feel the ABS kick in. I brought the car in after finding out about this recall and they changed the chip. I have not had any problems since then and have actually tried to make it occur many times since I got the service done.
Although I never had my ABS light come on, but you might want to give it a shot.
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Old 05-06-2006, 12:33 PM   #7
TKDKracker007
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I remember a notice about that, I think they reflash the ECU, the issue was that ABS would sometimes kick in when not needed. I could be wrong on that. My light hasn't come back on in the last week, and I logged about 1300mi. I guess its ok, I'm not very concerned.

Thanks guys-
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