ABS Light and Traction Control Light Going Off and On - Focus Fanatics
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Old 03-14-2013, 07:18 PM   #1
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ABS Light and Traction Control Light Going Off and On

I have a 2006 Focus ZX3 I bought used since last year, the ABS Light has been going off this past month (traction as well)

It all started at night, I live near San Francisco so it has been cold and windy at night. the lights went off when driving.

held on for a week then disappeared as I drove in the day for 4 days then came back on again at night.

I had my regular service coming up and the light disappeared before going to the dealer and they found nothing and had nothing to diagnose.

It came back on a week later, I finally had chance to take it to the dealer, they said its just an intermittent issue? and they checked all speed sensors and readings and everything was reading correctly, they cleaned the sensor a bit and just reset the ABS.

it then went off 2 days later again then I was about to take it back, but then it went back to normal again, so I didnt feel I should bring the car back to diagnose since the lights were back to normal.

I checked the wiring and it all looks fine, car has 30K miles. levels and brakes are good per dealer.

I notice others having them go off and on in other threads, but could this be more related to cold weather?

But here is another issue, since I bought the car, at low speeds during park to drive gear change from a parking spot or on slow speed roads starting out from an intersection, the car would make a grinding or creaking sound when I attempted to turn the wheels, mostly to left. then eventually the noise goes away, no adverse effects in turning or any gauge lights would go off.

this happened intermittently maybe once a week or so since buying the car.

could that be a good piece of evidence in support to the ABS sensor?

power steering and break fluid were checked to be full and fluid was clean.


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Old 03-20-2013, 12:02 AM   #2
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The ABS light and Traction light were okay during Sunlight, then went off at night. then went back to normal in daytime. not so sure I can relate it to daytime/night or cold/warm

Here is the note from the Mechanic

Trouble Code C1236-Left Rear Speed Sensor input circuit fault scan

intermittent issue.

so can I safely say I need to focus on the left rear wheel sensor for a repair?
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Old 03-20-2013, 12:41 AM   #3
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Yeah, if that code was stored that's the corner to look at...

For that noise, have someone turn the wheel while you look at the strut. You're looking, listening (maybe even "feeling" if you put a hand on the spring) for a vibration or noise in that area. It's possible that the strut bearing at the top of that assembly isn't moving smoothly anymore. If so, it'll tend to bind & release leading to the noise & a vibration that can be seen/felt in the spring area.

Guessing at that area first, just 'cause it's the closest match to the described symptoms.

Always hard to "hear it" long distance, so this is just a first guess at something to check!

Luck!
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Old 06-25-2013, 04:20 PM   #4
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FIXED

Replaced the rear left wheel with a new ABS sensor

Problem FIXED
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Old 06-25-2013, 08:19 PM   #5
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Hmmm... I was hoing my issue was as simple as yours; but the groaning noise mi e makes is uber-disconcerting! Good deal that you got yours fixed up, though!

I'm gonna be tearing mine apart this weekend and inspecting the drum and shoes on the side I heard the groaning. Meanwhile, the ABS & traction are disabled.
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Old 07-04-2013, 12:22 AM   #6
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Driver's side rear drum was loose!!! Same shit the f/r wheel did: the axle nut loosened and the improper air gap threw the ABS & traction systems off.
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Old 08-28-2013, 07:21 PM   #7
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You figure this out? What was it?!
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Old 08-29-2013, 12:00 PM   #8
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Replaced the ABS Sensor on the driver side rear wheel and it was 100% fixed

code was throwing out speed issue with driver side rear wheel sensor, so completely replacing it made the problem never come back
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