check engine light VSC off, etc.
Go to auto parts store and try a new gas cap for $15-$20, disconnect battery to delete lights and will probably be good to go, if not probably need some other service at the Toyota garage.
check engine VSC off
First time followed owner manual and took to Toyota for service, ended up paying about $100 for a gas cap. 2nd time 40,000 miles later went to auto parts store and purchased a gas cap for $14.00, disconnected battery to delete codes, problem solved.