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www.toyota-4runner.org/.../4164-check-engine-light-vsc-trac-trac-off-li... Jun 6, 2004 - I just bought it, and a few days later the check engine light, VSC TRAC, and TRAC OFF lights all came on. I took it to a dealership and was told ...
check engine light is obviously telling you that you need to take to a lexus approved mechanic who will have the diagnostic equipment for your age of vehicle which is known as OBDI , there are many reasons for these symptoms mostly electronic so would need to actually be with vehicle to help better
That code relates to a crankshaft position sensor signal. It you have a check engine light come it disables the VSC and Trac system. Until you get that sensor fixed the VSC and the TRAC system will be inop. So whenever you have a check engine light come on that is what you will see. Even though you cancel the check engine light the fault still exists and the VSC/ TRAC light will come back on. That is a sure way to tell that something is wrong.
You have to know what code is stored to fix the problem. Toyota's will generally display a Check Engine light, VSC and TRAC light all at the same time, even if it's a simple problem with an oxygen sensor (for example). You can disconnect the negative battery cable for a few minutes, even though you should a scan tool should be used, to clear out the code.
This could be two seperate problems but the trac and vsc lights can come on when the check engine light does for a number of codes. Have the check ngine light scanned to diagnose the problem. When the problem that caused the engine light to come on is resolved and the code cleared the tra and vsc lights should turn off as well. Rarely they will stay on in which case your toyota dealer may have to do a "zero point calibration".