Lincoln 1997 Continental Owner's Manual page 18

This light illuminates every time you turn the
ignition to the ON or START position (engine off).
The light should go off when the engine starts and
the alternator begins to charge.
If the light stays on or illuminates when the engine
is running, have the electrical system checked as
soon as possible.
Turn Signal Indicator Lights
When you push the turn signal lever up before
making a right turn, the right side arrow on the
instrument panel flashes.
When you push the turn signal lever down before
making a left turn, the left side arrow on the
instrument panel flashes.
Usually, the turn signals turn off automatically after
you turn your vehicle. If the turn signal continues
to flash after you have made the turn, push the
lever back to the OFF position.
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If one or both of your turn indicators do not flash
or stay on continuously, have them serviced as soon
as possible. In the meantime, be sure to use the
accepted hand signals.
Service Engine Soon 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.