Lexus 2004 GX470 Owner's Manual page 220

CAUTION
D Do not adjust the mirror while the vehicle is moving.
Doing so may cause the driver to mishandle the
vehicle and an accident may occur, resulting in death
or serious injuries.
D Since the mirror surfaces can get hot, do not touch
them when the outside rear view mirror defogger
switch is on.
STEERING WHEEL AND MIRRORS
Power rear view mirror control
"
1 Master switch 2 Control switch
To adjust the power rear view mirror, first place the master
switch at "L" (left) or "R" (right), and push the control
switch on the desired side.
The power rear view mirrors can be adjusted when the key is
in the "ACC" or "ON" position.
When the automatic transmission selector lever is shifted
into "R" position with the master switch in the "L" or "R"
position, the rear view mirrors automatically down to help
backing up.
The mirrors return to the previous position in the following
operations.
D Shift the transmission lever out of "R" position.
D Place the master switch in the neutral position.
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