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ABS kicking in over uneven pavement at low speeds?

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Old 04-19-2016 | 05:59 PM
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ABS kicking in over uneven pavement at low speeds?

Hey Guys,

Have noticed the ABS will kick in at low speeds over uneven pavement. I know it'll kick in if it feels difference in traction between wheels while braking, but these situations seem odd. The car's rather stiff, eibach sways and PSS10's....but this doesn't seem normal to me (never had another car do it).


Anyone run into this?
 
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Old 04-19-2016 | 06:16 PM
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Yep, mine comes on all the time. I've heard it's very sensitive but I attribute the excess to either my coilover dampers needing a rebuild or the bigger 6 pot front brakes or a combination of both in my case.
 
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Old 04-19-2016 | 06:18 PM
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Happens to me occasionally. I thought it was kind of strange but just chalked it up to the traction control being aggressive.
 
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Old 04-19-2016 | 07:21 PM
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Do you get it while braking or just driving around? It only happens on occasion for me when braking at low speed on uneven ground. At first I thought something was wrong with the brakes but it's just the ABS.
 
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Old 04-19-2016 | 07:24 PM
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Originally Posted by FI_FTW
Do you get it while braking or just driving around? It only happens on occasion for me when braking at low speed on uneven ground. At first I thought something was wrong with the brakes but it's just the ABS.
Only while braking for me. Not necessarily hard breaking though.
 
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Old 04-19-2016 | 07:40 PM
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Originally Posted by Jeanmarcboilard
Only while braking for me. Not necessarily hard breaking though.
Same here!
 
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Old 04-19-2016 | 08:05 PM
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Originally Posted by FI_FTW
Same here!
Same

Glad to hear it's normal
 
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Old 04-19-2016 | 08:09 PM
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Yep. Normal operation.
 
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Old 04-20-2016 | 10:10 AM
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mine never activates unless under extreme braking conditions. i tilt my head in wonder at anyone who thinks that "normal" driving and abs activation is considered "normal".

it might be normal when you're driving like a maniac? but it sure wouldn't be "normal" for ANY sedate and within the speed limit and during the course of day to day and "legal" driving.
 
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Old 04-20-2016 | 10:33 AM
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Keep tilting.

Happens at speeds as low as 1 mph (no hard braking required) if you are going down a steep mountain grade on hard packed gravel and gravel strewn paved roads. I know, I drive these types of roads regularly when playing in the mountains.

The key is in the OP's post where he references uneven pavement. I would include gravel littered pavement as well as uneven pavement.
 

Last edited by Shadetree996; 04-20-2016 at 11:19 AM.
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Old 04-20-2016 | 11:04 AM
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yea, usually going over pot holes, etc at speeds below 10 mph.


Maybe we've all got broken cars. ,but it's good to hear others seem to be dealing with the same thing.
 
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Old 04-20-2016 | 11:11 AM
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Shadetree996 is infamous around these parts
One time at band camp I had this happen as I was creeping down a steep mountain cabin driveway.



The ABS kicked in and popped up this rock (it was buried for the most part at that time) at an angle that snapped the tie rod along with other carnage.
It was a freak shot but ended up causing $3,500 worth of overall damages. My speed at the time .... probably 1 mph.

 

Last edited by Shadetree996; 04-20-2016 at 11:18 AM.
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Old 04-20-2016 | 12:09 PM
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Keep in mind that this can also happen if a wheel bearing is about to fail.
 
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Old 04-20-2016 | 02:02 PM
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Thats not normal at all. Even on the race track i hardly see the PSM kicking in.
Do you guys run oem tire sizes? If not, that could trigger the PSM and damage your 4wd.
 
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Old 04-20-2016 | 02:57 PM
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Absolutely normal if you understood the slope angles and traction issues at hand. Think about it ... why would ABS NOT kick in if it sensed wheel spin abnormalities?
 


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