Buick 2005 Century - Manual (Page 84)

Ignition Positions
With the ignition key in the ignition, the key can be
turned to five different positions:
A (ACCESSORY): This position lets the radio and
windshield wipers operate when the engine is off.
To use ACCESSORY, push in the key and turn
it counterclockwise.
B (LOCK): This is the only position in which the ignition
key can be inserted or removed. This position locks
the ignition and transaxle. It is a theft-deterrent feature.
Notice: If your key seems stuck in LOCK and
you can not turn it, be sure you are using the correct
key; if so, is it all the way in? If it is, then turn the
steering wheel left and right while you turn the
key hard. Turn the key only with your hand. Using a
tool to force it could break the key or the ignition
switch. If none of these works, then your vehicle
needs service.
C (OFF): In this position the engine is off. Use the
OFF position if the vehicle must be pushed or towed.
D (RUN): This position is where the key returns to after
the vehicle is started. This position displays some of
the warning and indicator lights.
E (START): This position starts the engine.
A warning chime will sound when the driver’s door is
opened if the ignition is in OFF, LOCK or ACCESSORY
and the key is in the ignition.
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