VSC TRAC and VSC OFF lights always on

[lionrampant]

Folks,

Another question - the VSC TRAC and VSC OFF lights are always on even when the engine management light is not on. I think this happened after I took it to Toyota and they did an emission test to try and diagnose p0420 code.

Is there anyway of resetting these warning lights to off? I want to see if they have been set on somehow or whether they are tripping everytime i start the car,

Cheers,

Malcolm.

 

[Layonnn]

Your center diff isn't locked is it?
Dealership might have accidentally done that.

 

[Wilsil]

I have the same after trying the scangauge what couldn't be connected.
CDL is not engaged.

 

[Austin LC]

Doesn't make sense after reading this thread but mine did that when my catalytic converter was acting up...

 

[Dwight S]

I haven't checked for the LC, but I know there is a procedure you can do to reset the VSC/Trac lights on the Highlanders. The VSC system will sometimes disable when a check engine light comes on. My wife's Highlander threw a code and the VSC light came on. I researched the internet and found a way to reset it. Never had any more issues.

 

[Puerto Rico 4x4]

I had the same problem and the it was the Yaw Rate Sensor. I replaced the sensor and still need to reset the steering angle sensor to get rid of the lights.