Buick Regal 1997-2000

Malfunction Indicator Light


Dashboard Warning Lamp

The primary function of the dash warning lamp (properly called the Malfunction Indicator Lamp, or MIL) is to advise the operator and that a fault has been detected, and, in most cases, a code stored. Under normal conditions, the dash warning lamp will illuminate when the ignition is turned ON . Once the engine is started and running, the PCM will perform a system check and extinguish the warning lamp if no fault is found.