VSC TRAC off, Check engine light - Toyota Nation Forum : Toyota Car and Truck Forums
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#1 Old 02-01-2009, 12:54 PM
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VSC TRAC off, Check engine light

I have a manual 2009 Corolla and I accidentally stalled my car trying to get out of the snow. The VSC and TRAC are now off and the check engine light is on. This has happened a couple times before and it usually corrected itself after a day or so but this time it doesnt seem to be fixing itself. Any ideas what is wrong or how to fix it?
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#2 Old 02-01-2009, 01:01 PM
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Have you tried completely disconnecting your battery?
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#3 Old 02-01-2009, 02:56 PM
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an obd-ii scanner will tell you why the check engine light is on.
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#4 Old 02-01-2009, 03:07 PM
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as per my local dealer, the vsc/trac systems are automatically disabled when the check engine light is on...

when my xrs was 3 days old this happened, turned out to be nothing more then a loose gas cap...

if the gas cap is the culprit the check engine light is suppose to reset after a set period of driving (there is a sensor that detects fuel vapour leakage from the tank), there is no need to disconnect the battery or pull the ecu fuse...

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#5 Old 02-01-2009, 03:26 PM
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Quote:
Originally Posted by pinoyesv6 View Post
an obd-ii scanner will tell you why the check engine light is on.

What does an OBD - ii scanner do?

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#6 Old 02-01-2009, 10:02 PM
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My friend said to disconnect the battery also but I haven't had time to do it yet but will try tomorrow.
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#7 Old 02-01-2009, 10:03 PM
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Quote:
Originally Posted by Wild.Joker View Post
What does an OBD - ii scanner do?
it reads the diagnostic codes that are causing the check engine light to come on.
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#8 Old 02-02-2009, 05:04 PM
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disconnecting the battery did not help
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#9 Old 02-02-2009, 05:33 PM
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You need a code reader to reset the computer.

Take it to the dealer if under warranty.
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#10 Old 02-02-2009, 06:06 PM
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disconnecting the battery only works if the light came up and the problem came away. if the problem is still there, you can disconnect the battery all you want and as soon as the computer detects the problem, the light will turn back on.

same goes with using a code reader to erase the code. u can erase it all u want but if the problem is still there then the light will come back up.

use the code reader to get the code and that will point you to your problem. many auto parts stores scan codes for free. if you're under warranty and you don't feel like getting your hands dirty, take it to the dealer.
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#11 Old 02-02-2009, 07:10 PM
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How deep was the snow? There is a chance you may have broke a abs sensor behind the wheel which the vsc and trac systems use. Many things could be it. Its under warranty, take it to the dealer for them to deal with it. A scan will tell you if that is the case and if so, which one it is.

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