Ford 1997 Crown Victoria Manual page 19

Normally, the light will glow momentarily as
you turn the ignition key to the ON position. If
it glows continuously:
1. Safely pull off the road as soon as possible.
Turn the ignition key from ON to OFF and
ON again.
2. If the light still glows, check to see if the air
suspension switch is OFF. If it is OFF, push
the switch ON. If it is ON, push the switch
OFF and have the system checked as soon as
possible.
Check Engine Warning Light
This light illuminates when the engine's
Emission Control System requires service. It will
also illuminate when the ignition key is in the
ON position and the engine is off.
The check engine warning light
Turn Signal Indicator Lights
The turn signal arrow will flash to indicate the
direction in which you are going to be turning.
The turn signal indicator light
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