Cadillac escalade ext 2002 ユーザーズマニュアル

The dome lamps will come on when you open a door.

You can also turn the dome lamps on by turning the
thumbwheel, located next to the exterior lamps control,
all the way up. In this position, the dome lamps will
remain on whether the doors are opened or closed.

You can use the DOME OVERRIDE button, located
below the exterior lamps control, to set the dome lamps
to come on automatically when the doors are opened, or
to remain off. To turn the lamps off, press the button 
into the in position. With the button in this position, 
the dome lamps will remain off when the doors are
open. To return the lamps to automatic operation, 
press the button again and return it to the out position.
With the button in this position, the dome lamps will
come on when you open a door.

This feature shuts off the dome, reading, glove box,
cargo and underhood lamps if they are left on for more
than 20 minutes when the ignition is off. This will keep
your battery from running down.

When on, an electrochromic mirror automatically dims
to the proper level to minimize glare from lights behind
you after dark.

The mirror also includes a display in the upper right
corner of the mirror face. The compass reading and the
outside temperature will both appear in the display at the
same time. The dual display can be turned on or off by
briefly pressing either the TEMP or the COMP button.