Lexus GS300 1998 Owner's Manual page 135

COMFORT ADJUSTMENT
16L017-1
" 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.
If the engine is not running, the key must be in the "ACC"
position for operation of the power rear view mirror.
122
NOTICE
If ice should jam the mirror, do not operate the control or
scrape the mirror face. Use a spray de–icer to free the
mirror.