Ford 1996 Crown Victoria Manual page 55

For more information about adding oil, see
Engine Oil Recommendations in the Index.
The Electronic Cluster
The electronic cluster works only when your
ignition is in the ON position. Each time you
start your vehicle, the displays go through a
self-test by flashing on and off once before the
actual readings are displayed. (Neither the turn
signals nor the high beam indicator light will
flash like the other indicators do for the
self-test.) Some of the warning lights will flash
on and remain on (will not immediately flash
off) until the normal cluster display is lit. This
self-test is used to indicate that all of the
warning/indicator lights are working properly.
Your electronic cluster tells you about the
condition of your vehicle by using two types of
equipment:
warning lights and gauges
message center
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