How do you reset vsc warning lite 2003 highlander?

If you are sure that it is the VSC (Variable Skid Control) warning light - it is not a warning light that you "re-set" like the service reminder, or the air pressure reminder, lights. It is a true warning light that something with either the braking system, or the skid detection system, is not functioning correctly. The only way to shut it off is to correct the problem. Get it to a dealer ASAP to get it checked.