Just another data point -- my '06 stays off too.

 

SC 430 Sam, I tried yesterday, hold the button down for about 3 seconds (or longer) the system will go off and stay off. The lights on the dash will indicate this. I have an 07 so aparently the newer models automaticaly turn off at 30 mph unless you override by holding down for the 3+ seconds.

This was a new discovery for me. Hope it workd for you. Surt

 

Maybe this has been where I have been making my mistake. In my old IS I just had to click it once, and it would stay off. I will hold mine for 3 seconds and see if that makes it permanent (I have just been clicking it to this point).

Thanks.

 

I am wondering on my 2004 SC, what does the VSC actually do to help with stability? ...Im having issues with it coming on after my tire changes to the rear wheels.

Alert Alert:
Just in!!! the tire guy says the film thats on new tires caused the slppage and I am fine! 4 new tires and back to normal!