Toyota Avalon Check Engine Light and VCS Light. Now pressing the button again would turn on both the systems and light will turn off, the systems are re-engaged now. whats up bro, I've got a 03 T4R sport my VSC trac, VSC off lights are on also check engine light was on but Auto Zone turned it off and told me cat was bad. The lights stayed on the entire fifty mile trip home. It runs smooth. I observed the van but no unusual driving condition detected. For some reason on Toyota and some Lexus vehicles certain check engine light CEL issues also result in the ECU lighting up the vsc trac and vsc off lights. My Avalon check engine light, vsc light and vsc off light came on following me driving through about 4 inches of water on the road. Local repair shop ran diagnostics for free…said I had a small emission leak…we replaced the gas cap and the shop turned off … I have at 2005 Toyota Highland with 175,000 miles. ... VSC automatically turns off by default with a check engine light/condition. If you notice the TRAC OFF light come on your Toyota dashboard, that means you have pressed the TRAC OFF button, likely located on the left side of the steering wheel. Sometimes the VSC OFF light doesn’t get off, and you can still see it lit; it could be because of some issues with your system. I was driving today with my 2005 Toyota Sienna XLE limited and all of a sudden I got Check Engine Light, VSC and TRAC OFF light. I have a 2003 Toyota Sienna. HI! gfoster1 Posts: 1. Check engine light and VSC light on 1 Answer. What s … read more Once the TRAC OFF and VSC OFF indication illuminates, it means that both the systems have turned off. But my mechanic asked me to $700 to repair it. I have pre-owned 2006 Avalon Limited with 78k miles on it. 0. The VSC, TRAC OFF and CHECK engine light came on. Toyota dealership wanted $85 to run the diagnostics. On some vehicles, the “skidding vehicle” or “TRAC OFF” light may also be lit as well. I recently had a similar issue In making a short turn on gravel the tire spun a bit and shortly after the VSC and check engine light came on. It is likely that “Traction Control” will not work while this light is illuminated. VSC VSC off & Engine light on I just had this same thing happen on my 2001 Toyota Avalon with about 82,000 miles. I have a question. Its check engine, VSC and trac off lights turned on a couple of days ago. The ECU actually switches these anti skid and anti lock brake systems off and the lights are to remind you that they are disabled. I discovered this after I had finished a visit and was headed home. Autozone told me the trouble code is P0135. The next morning I disconnected the battery for about 15 minutes, then hooked it back up. 3 days back (after 200 miles drive) I found both the lights - Check engine and VSC in ON condition. Most Toyota owners will find that when the Check Engine and VSC lights are lit, there is a problem with an O2 Sensor or gas cap. 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