Cadillac 1999 Seville Owner's Manual page 72

NOTICE:
If your key seems stuck in OFF and you can't
turn it, be sure you are using the correct key; if
so, is it all the way in? Turn the key only with
your hand. Using a tool to force it could break
the key or the ignition switch. If none of this
works, then your vehicle needs service.
ACC: This position lets you use things like the radio
and the windshield wipers when the engine is off. Use
ACC if you must have your vehicle in motion while
the engine is off (for example, if your vehicle is
being pushed).
ON: This is the position for driving.
START: This position starts the engine.
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Retained Accessory Power (RAP)
The following accessories on your vehicle may be used
for up to 10 minutes after the ignition key is turned from
ON to OFF:
D
Cellular Phone (If Equipped)
D
Radio
D
Power Windows
D
Steering Wheel Controls (If Equipped)
D
Sunroof (Option)
Power to these accessories stops after 10 minutes or if
any door is opened. If you want power for another
10 minutes, close all the doors and turn the ignition key
to ON and then back to OFF. If the cellular phone is
being used while Retained Accessory Power is in effect,
the timer is suspended (to avoid interruption of the call).
The timer resets to 10 minutes at the end of the call.
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