Toyota 2009 4runner Owner's Manual page 98

Auto anti-glare inside rear view mirror
In automatic mode, sensors are used to detect the headlights of
vehicles behind and automatically reduces the reflected light.
n To prevent sensor error (vehicles with auto anti-glare inside rear view
mirror)
1-3. Adjustable components (seats, mirrors, steering wheel)
To ensure that the sensors operate prop-
erly, do not touch or cover them.
Press the button for longer
than 3 seconds to turn auto
mode ON/OFF.
The indicator comes on when
automatic mode is turned on.
The mirror will revert to the
automatic mode each time the
engine switch is turned on.
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