driving stability controls failiure lights - BMW 3-Series (E90 E92) Forum

mikeouk · 12-18-2010, 07:42 AM

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?

ASR1 · 12-18-2010, 12:09 PM

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!

m1bjr · 12-18-2010, 02:49 PM

Maybe the wheel was packed with snow and upset the sensor?
How deep are we talking here?

toxicnerve · 12-18-2010, 02:51 PM

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?

ASR1 · 12-18-2010, 02:51 PM

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...

ASR1 · 12-18-2010, 02:53 PM

Quote:

Originally Posted by toxicnerve

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.

ASR1 · 12-19-2010, 07:44 AM

Problem seems to have gone away by itself -- I guess it was a frozen/ blocked sensor somewhere...

mikeouk · 12-20-2010, 01:11 PM

Mine rectified it's self also,,so haven't a clue why it happened

mjh93sa · 12-20-2010, 05:58 PM

Quote:

Originally Posted by mikeouk

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

)

toxicnerve · 12-20-2010, 07:34 PM

^^ 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.

ihpj · 12-20-2010, 09:10 PM

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.

12-18-2010, 07:42 AM	#1
mikeouk Second Lieutenant Drives: 2007 E92 325i m sport Join Date: Oct 2010 Location: cumbria Posts: 225 iTrader: (0)	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? __________________ 2007 E92 325i M SPORT black sapphire, cream leather 19" LM-R RIMS , PERFORMANCE GRILLS
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12-18-2010, 12:09 PM	#2
ASR1 Member Drives: 330i Join Date: Nov 2009 Location: London Posts: 106 iTrader: (0)	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.

12-18-2010, 02:49 PM	#3
m1bjr LSD - No, you're not seeing things Drives: RS250 CUP Join Date: Mar 2010 Location: Somerset UK Posts: 3,239 iTrader: (4)	Maybe the wheel was packed with snow and upset the sensor? How deep are we talking here? __________________

12-19-2010, 07:44 AM	#7
ASR1 Member Drives: 330i Join Date: Nov 2009 Location: London Posts: 106 iTrader: (0)	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.

12-20-2010, 01:11 PM	#8
mikeouk Second Lieutenant Drives: 2007 E92 325i m sport Join Date: Oct 2010 Location: cumbria Posts: 225 iTrader: (0)	Mine rectified it's self also,,so haven't a clue why it happened __________________ 2007 E92 325i M SPORT black sapphire, cream leather 19" LM-R RIMS , PERFORMANCE GRILLS

12-18-2010, 02:51 PM	#4
toxicnerve Colonel Drives: E92 335d M-Sport Join Date: Jul 2009 Location: UK Posts: 2,834 iTrader: (2)	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?

12-20-2010, 07:34 PM	#10
toxicnerve Colonel Drives: E92 335d M-Sport Join Date: Jul 2009 Location: UK Posts: 2,834 iTrader: (2)	^^ 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.

12-20-2010, 09:10 PM	#11
ihpj Private First Class Drives: BMW E90 330d M Sport Join Date: Oct 2010 Location: BUCKS Posts: 181 iTrader: (0)	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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