Ford Mercury Villager 1997 Owner's Manual page 90

Ignition
Understanding the Positions of the Ignition
Your vehicle's ignition has four positions. They are:
The ignition positions
OFF/LOCK allows you to shut off the engine and all
accessories and locks the gearshift lever. Removing the key then
locks the steering wheel.
ACCESSORY allows you to operate some of your vehicle's
electrical accessories while the engine is not running. For example,
you can use ACCESSORY to turn on the radio, windshield
wipers, or operate the cigarette lighter without starting the engine.
ON allows you to test your vehicle's warning lights to make
sure they work before you start the engine. The key returns to the
ON position once the engine is started and remains in this
position while the engine runs.
START cranks the engine. Release the key once the engine starts
so that you don't damage the starter. The key should return
to the ON position when you release it.
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