Famous 2002 Toyota Highlander Flashing Check Engine Light 2023. Also had the check engine light flash me going up a steep grade at 50mph in 3rd gear. When the check engine light is flashing in highlander, it indicates that there is a significant problem with the engine that requires immediate attention.
Whereas a steady check engine light may mean you merely need to tighten you gas cap next time you stop in order to reset the service. Recently purchased 2002 highlander v6 with 113k miles. No leaks no noises nothing out of the ordinary.
