Cool Check Engine Light On Toyota Highlander Ideas. Turn on the ignition but don’t start the engine. The three check engine light issues reported to repairpal help offer some insight into the common highlander problem.

For example, if the cause of your check engine light coming on was a loose gas cap, if it's tightened, the light will turn itself off. If you have a flashing check engine light, turn off the engine immediately to prevent potential motor damage. If both the abs and vsc lights are on, there is likely a problem with your brakes that is also affecting the traction.





