1999 Lexus LX 470 Owners Manual - Page 191
1999 Lexus LX 470 Manual
Page 191 highlights
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 outside rear view mirror surfaces 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. Adjust it before driving so that the rear view is the best. 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. 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 personal injuries.