Why does the VSC Warning Light come on on my 2005 Lexus RX330?

SOURCE: 2004 lexus rx330 what does vsc light indicate

VSC is Vehicle Stability Control. This is and electronic sensing which monitors and combines performance of braking, wheel slippage and handling, ect.
If this light comes on along with check engine light, it can be caused by a loose gas cap or faulty o2 sensor.

SOURCE: VSC and Malfunction Indicator came on and stays on

When you say malfunction indicator , do you mean `check engine`` light.
These paired lights can indicate a change in engine air flow and fuel mixture. Try a fresh tank of premium fuel, but first a unscrew and re-screw the gas cap until it ratchets into place. The lights can be triggered by a loose gas cap, a fouled O2 sensor, and several other emission related problems including sticking throttle body components, etc.
This can sometimes be sprayed with carb cleaner inserted in the snorkle area of the air intake where teh snorkle meets the metal intake.

Testimonial: "Thanks for the reply, it was a loose gas cap once tightened it all cleared. This was very helpful."

SOURCE: How do I reset the VSC trac warning light on my

see my RX and GX posts earlier today for same symptom

SOURCE: 2001 lexus ls430: warning

yaw sensor is out of calibration, most likely from hoisting vehicle in air. sensor needs to be calibrated before light will go out. jump pin 3 and 5 of dlc under driver side dash. connect jumper wire with ignition off, turn ignition on, vsc light should flash, let it flash for awhile (10 sec). turn ignition off and disconnect jumper wire.(do this with vehicle station on ground).

SOURCE: VSC warning light and check engine code 786 on

The VSC warning light, Trac Off and check engine is probably an easy fix. If you look under the air filter/cleaner box there is probably a rubber hose that has been disconnected from a steel line. This is common if you have had the oil changed recently, the tech will check the ail filter and doesn't realize the hose has been disconnected.