VSC light is on and my mechanic doesnt know where to start. Can you help??

If you are a do it yourself mechanic, the following link suggests a procedure, but otherwise car may need to be towed in for repair.

https://repairpal.com/check-engine-light-vsc-lights-872

Not sure if this will help, but my 2002 LEXUS sc430 had this issue, and it turns out that if you plug any scan tool other than the dealer unit in, it will cause this VSC lights to come on. It requires that you reset the "zero point calibration" for the skid system, which is done by first: have car on level ground with less than 1% slope in any direction. Next, follow these directions:

If you receive the "VSC" and "VSC Off" lights on the dashboard after a visit to a mechanic (often an independent mechanic using non-Lexus ODBII equipment), this means your "Zero Point Calibration" has been erroneously reset by a non-Lexus specific ODBII tool. This might especially happen if your state requires state inspection via ODBII, and you take your Lexus to a no-name place (like a Jiffy Lube or something). Follow the steps described in Post #6 in this thread to resolve this issue:
http://www.clublexus.com/forums/gs-2...d-vsc-off.html
Note that where you see a reference to a tool called the "SST 09843--18040", substitute that "tool" for a simple jumper cable (such as a short speaker wire) or a paperclip.
Here is the relevant excerpt from the above thread:
"The solution consists of approximately 15 step .
NOTE:While performing the Zero Point Calibration, do not tilt, move or shake the vehicle.
The vehicle must remain in a stationary condition throughout the entire process.
Be sure to perform the procedure on a level surface with an inclination of less than 1%.
Explanation of symbols:
SST (4-inch wire)
DLC3 (OBD-II connector under the dash)
TS (on the top row,pin number 3)
CG (on the bottom row,pin number 5)
(See picture below)
1. Ensure the shift lever is in the ''P'' range.
2. Turn the ignition switch Off.
3. Using SST 09843--18040, repeat a cycle of short and open between terminals Ts and
CG of DLC3 4 times or more within 8 seconds (refer to the specific vehicle EWD for
TS and CG pin location in the DLC3).
4. Turn the ignition switch ON, do not start.
5. Verify that the VSC indicator light is lit indicating the recorded zero point is erased.
6. Turn the ignition switch OFF.
7. Be sure the terminals Ts and CG of DLC3 are disconnected.
8. Turn the ignition switch ON, do not start.
9. Check that the VSC warning light goes off about 15 seconds after the ignition switch
is turned ON.
10. After ensuring that the VSC warning light remains OFF for 2 seconds, turn the ignition
switch OFF.
11. Connect terminals Ts and CG of DLC3 using SST 09843--18040.
12. Turn the ignition switch ON, do not start.
13. After turning the ignition switch ON, check that the VSC warning light is lit for about
4 seconds and then starts quick blinking at 0.13 second intervals.
14. After ensuring the blinking of the VSC warning light for 2 seconds, turn the ignition
switch OFF.
15. Remove the SST from terminals Ts and CG of DLC3.
16. Drive the vehicle for at least 5 minutes to confirm Zero Point Calibration is complete."
Attached images

Engine Cranks But Wont Start - Professional Mechanics ...

www.2carpros.com/articles/car-cranks-but-wont-startJul 15, 2015 - Step 1 - A fuel pump operation failure will cause the engine to not startdue to ... The power distribution center of a vehicle houses fuses which .... Works atCVS ... I have a 1991 ford f150 the motor turn over fine but it won't start.

Car won't start - check VSC light - Club Lexus Forums

www.clublexus.com/.../is.../519132-car-won-t-start-check-vsc-light.html

Aug 13, 2010 - Car won't start - check VSC light IS - 2nd Gen (2006-2013) ... Carmakes an exaggerated version of the engine startup noise. Hard to describe the noise, but the one that sounds like .... It stopped accelerating, the VSC check & check enginelights came on. I immediately pulled over. Waited a few minutes.

you will need to hook up a scan tool, I know many parts stores will loan you one or let you use it in the parking lot, VSC could have something to do with a wheel mounted speed sensor, did you hit something? any noises, try this and see if it goes away

1. • 1 Shut off the vehicle's engine and apply the parking brake to protect yourself while working on the vehicle.
     
   • 2 Open the vehicle's hood and examine the engine compartment. Locate the air filter box mounted to the left of the engine. The air filter box features a black exterior, square in shape, and a large ribbed intake hose.
     
   • 3 Check all of the small black vacuum lines surrounding the air filter box. Reconnect any disconnected or loose vacuum lines you find.
     
   • 4 Start the engine and drive the vehicle to clear the "VSC" warning light displayed on the dashboard. If the VSC light fails to go out after driving the vehicle normally, proceed to the next step.
     
   • 5 Park the vehicle, turn off the engine and set the parking brake. Open the vehicle's hood and disconnect the battery's negative cable for 15 seconds, using an appropriate size socket. Disconnecting the negative battery cable will reset the vehicle's computer and clear the "VSC" warning.
     

Many possibles, but first check gas cap for torn gasket or just being loose. The VSC light is related to emissions issue and can be leaking vac hose, bad purge valve and other such.

dirty sensors in each wheel and dirty pick up in each wheel .

Check your gas cap, it may not be sealing properly that's why your getting the VSC light on the dashboard. Eventualy the light will go out after you fix. Good luck.

My 2000 Lexus GS 400 just had the VSC/VSC off light and the check engine light come on. I would have to push the accelarator peddle all the way down to get it to go. Took it to the Toyota dealer and the code pulled up as the Throttle Position Sensor was out. Purchased one and having it put in. Will update if this fixes the problem.

2003 Toyota 4Runner - just noticed the Check engine light was on flowed by the VSC TRAC and TRAC OFF lights stay. Any Solutions?