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Old 12-04-2014, 10:02 AM   #1
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Random traction control disable?

Anyone else have this problem? In the morning at about 6:30 when I leave for work my traction control will turn off for like half a mile and then back on just randomly for no reason


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Old 12-04-2014, 10:20 AM   #2
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I'm hearing more and more of this recently. A few people have mentioned their TC acting funny. Weird.

Maybe it has something to do with the cooler weather??
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Old 12-04-2014, 02:45 PM   #3
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... the machines are beginning to become sentient.

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Old 12-04-2014, 02:57 PM   #4
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I'm shooting from the hip here, but heres what i'm thinking.

Part of the way the computer measures "traction" is by using a Hal Effect Sensor
( Hall effect sensor - Wikipedia, the free encyclopedia )
At the rear hubs to measure wheel speed. Basically, with it being cold, i can only guess that these sensors are becoming unhappy some how. Maybe if theres snow, salt, grime, crap, ice? Or just some other junk in there, its losing signal and becoming unhappy. We've seen this happen on cars before that remove the under tray and the Crankshaft Position Sensor (also a Hal Effect) will get dirty and the engine goes all sorts of haywire. Perhaps then, as you drive and warm the car up the sensor regains signal?

Total shot in the dark, but it wouldn't take but a couple of minutes to jack the rear of the car up and slide under there and take a peak. If i remember correctly they're located opposite the Caliper. For example, if the (rear) caliper were located at 3:00, the sensor should be around ... mmm 7:00 or 8:00, perpendicular to the hub. Cant miss it.
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Old 12-06-2014, 09:48 PM   #5
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Time to get the jack and stands haha


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Old 12-09-2014, 09:28 AM   #6
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This does seem to be happening a lot lately. This shouldn't even be happening. I'm sure ford has a recall coming at some point.
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Old 12-10-2014, 11:49 AM   #7
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I have had issues with it deciding to reactivate advancetrac and traction control without warning, but that has only happened when I was on track, never on the street. Always exciting when the car decides to apply braking force to one or more wheels at 120 with pads that are way stickier than it expects...
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Old 12-10-2014, 12:31 PM   #8
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^^ Do you just push the button, or hold it for 10+ seconds? My road course tune also has traction control completely disabled, my dash looks like a Christmas tree with all the lights on haha.
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Old 12-10-2014, 01:59 PM   #9
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I hold until the dashboard says advance trac disabled. A PCM tune will not have an effect on advancetrac, that lives entirely within the ABS module. Trying to determine the SCCA legality of going to the BOSS 302S ABS module (that module fixes the advancetrac issues by completely eliminating it, also does not have any form of ice mode). It is obviously not covered under the /backdate clause, as it is not off a road vehicle, but off the factory race car. I guess it comes down to interpretation of "replacement or reprogramming of a computer module is allowed in certain circumstances". I may need to send in a request for rules clarification...
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Old 12-11-2014, 07:35 AM   #10
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I know a lot of the guys on BOSSMustangsOnline - Index run that module, may be some better clarification there.
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Old 12-11-2014, 07:44 AM   #11
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Happens too me sometimes as well!


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Old 12-13-2014, 11:05 PM   #12
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Quote:
Originally Posted by Cooolbreeez View Post
This does seem to be happening a lot lately. This shouldn't even be happening. I'm sure ford has a recall coming at some point.

Ford's not even willing to look at it, the problem has been occurring since 2011 and the one case that was resolved, ford did not pay for.


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