Lexus ES-300 2001 Manual page 152

Adjust the mirror so that you can just see the rear of
your vehicle in the mirror.
Pushing the switch changes the mode between
"AUTO" and "DAY".
The indicator comes on when the "AUTO" mode is
selected.
"DAY" mode: The mirror surface is normal.
"AUTO" mode: If the mirror detects light from the
headlights of the vehicle behind you, the mirror
surface darkens slightly to reduce the reflected
light.
When the inside rear view mirror surface changes, the
driver's side outside rear view mirror surface will also
become darker.
When the ignition key is inserted and turned on, the
inside rear view mirror always turns on in the "AUTO"
mode.
CAUTION
Do not adjust the mirror while the vehicle is moving. It
may cause the driver to mishandle the vehicle and an
accident may occur resulting in death or serious
injuries.
When the outside air temperature is low, it may take a
little longer for the mirror to darken in response to the
detection of headlights.
COMFORT ADJUSTMENT
135