Famous 2003 Toyota Highlander Check Engine Light Blinking Ideas. If you have a flashing check engine light, turn off the engine immediately to prevent potential motor damage. If your toyota highlander has a flashing check engine light means that there is a catalyst damaging misfire (it can damage the catalytic converter and o2 sensors).
The flashing light is a warning that the vehicle should not be driven and should be serviced immediately. Web how do i reset the check engine light form a 2003 toyota highlander 6 cyl. Web flashing check engine light means you have a misfire, hence why it shakes.
