Chevrolet impala 2000 ユーザーズマニュアル

Your vehicle has a feature to help prevent you from
draining the battery in case you accidentally leave the
interior courtesy lamps, reading/map lamps, visor vanity
lamps, trunk lamp or glove box lamps on. If you leave
any of these lamps on, they will automatically turn off
after 10 minutes, if the ignition is in OFF. The lamps
won’t come back on again until you:
D turn the ignition on,
D turn the lamp switch off, then on, or
D open a door.
Note that if your vehicle has less than 15 miles (25 km)
on the odometer, the battery saver will turn off the lamps
after only three minutes.

Battery rundown protection will also work if the
headlamps are left on. After having been left on for 
10 minutes, the headlamps and the parking lamps will
flash three times. They will remain on for one more
minute before being turned off automatically.

With retained accessory power, your power windows,
audio system and sunroof will continue to work up to 
10 minutes after the ignition key is turned to OFF and
none of the doors are opened.

Adjust all the mirrors so you can see clearly when you
are sitting in a comfortable driving position.

To reduce glare from lamps behind you, pull the lever 
at the bottom of the mirror toward you (to the night
position). To return the mirror back to the day position,
push the lever away from you.