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      12-18-2010, 07:42 AM   #1
mikeouk
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driving stability controls failiure lights

driving in bad snow last night, had the DTC working, then it started spinning and the abs and brake warning lights came on. Is this a component failure or has the computer just thrown up error lights that can be reset?
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      12-18-2010, 12:09 PM   #2
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I had precisely the same problem this afternoon while trying to get my car out of deep snow. After giving up (!) and parking the car, it picked up ABS/DBC/Flat tyre monitor etc "control system failure"

I had been switching between DSC off and DSC + DTC off a few minutes before this happened.

Puzzled!

Last edited by ASR1; 12-18-2010 at 01:43 PM.
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      12-18-2010, 02:49 PM   #3
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Maybe the wheel was packed with snow and upset the sensor?
How deep are we talking here?
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      12-18-2010, 02:51 PM   #4
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Sounds like it's shit the bed because it couldn't work out what was going on with the wheels and has thrown an error because it thinks it's got a duff sensor or similar.

If you leave the car off for a while and then go and fire it up do the errors still come up?
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      12-18-2010, 02:51 PM   #5
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Around 6 inches?

Car wasn't stuck because of depth of snow, more because the tyres compressed the snow into ice - which is not ideal if your driveway is uphill...
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      12-18-2010, 02:53 PM   #6
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Quote:
Originally Posted by toxicnerve View Post
Sounds like it's shit the bed because it couldn't work out what was going on with the wheels and has thrown an error because it thinks it's got a duff sensor or similar.

If you leave the car off for a while and then go and fire it up do the errors still come up?
Suspect so too, but it was still throwing the same error when restarting after an hour.
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      12-19-2010, 07:44 AM   #7
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Problem seems to have gone away by itself -- I guess it was a frozen/ blocked sensor somewhere...

Last edited by ASR1; 12-19-2010 at 12:14 PM.
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      12-20-2010, 01:11 PM   #8
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Mine rectified it's self also,,so haven't a clue why it happened
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      12-20-2010, 05:58 PM   #9
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Quote:
Originally Posted by mikeouk View Post
Mine rectified it's self also,,so haven't a clue why it happened
I'd guess that there is logic in the ECU that basically decides that the constant differential between front and rear tyre speeds cannot be true and that a sensor has failed. When you are back driving normally it sees that everything is actually ok and resets.

The same sort of behaviour is seen when a car is on a dyno. I have also managed to trip the tyre pressure monitor with excessive exuberance whilst exiting a junction (loan car - which is always faster than yours )
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      12-20-2010, 07:34 PM   #10
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^^ what he said. As I suspected the DSC controller had got it's knickers in a twist and now the car has been driven normally again it's reset and happy.
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      12-20-2010, 09:10 PM   #11
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As others have already said, its a ECU fault given the amount of spin the tyres are doing [and the car not going anywhere]. There is no actual failure - if you switch the car off and leave it, everything resets itself happily.

All in all, nothing to be worried about given the weather.
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