Toyota 2009 Avalon Owner's Manual page 93

1-3. Adjustable components (seats, steering wheel, mirrors)
To prevent sensor error (vehicles with auto anti-glare inside rear view
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mirror)
CAUTION
While driving
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Do not adjust the position of the mirror.
Doing so may lead to mishandling of the vehicle and an accident, or result-
ing in death or serious injury.
66
To ensure correct functioning of the sen-
sors, do not touch or cover the sensors.