Operation Manual

Engine Check/Malfunction Indicator Light (MIL)
Yellow Telltale
Light
What It Means
Engine Check/Malfunction Indicator Light (MIL)
The Engine Check/Malfunction Indicator Light (MIL) is a part of an Onboard Diagnostic Sys-
tem called OBD II that monitors engine and automatic transmission control systems. The light
will illuminate when the ignition is in the ON position before engine start. If the bulb does not
come on when turning the key from OFF to ON/RUN, have the condition checked promptly.
Certain conditions, such as a loose or missing gas cap, poor quality fuel, etc., may illuminate
the light after engine start. The vehicle should be serviced if the light stays on through
several typical driving styles. In most situations, the vehicle will drive normally and will not
require towing.
When the engine is running, the MIL may flash to alert serious conditions that could lead
to immediate loss of power or severe catalytic converter damage. The vehicle should be
serviced as soon as possible if this occurs.
164 UNDERSTANDING YOUR INSTRUMENT PANEL