Toyota Avensis Owner's Manual page 311

CAUTION
 When using the rear view monitor system
Observe the following precautions to avoid an accident that could result in
death or serious injuries.
 Never depend solely on the monitor system when reversing.
 Always check visually and with the mirrors to confirm your intended path is
clear.
 Use your own eyes to confirm the vehicle's surroundings, as the displayed
image may become faint or dark, and moving images will be distorted, or
not entirely visible when the outside temperature is low. When backing up,
be sure to check behind and all around the vehicle visually and with the
mirrors before proceeding.
 Always check the vehicle surrounding area, because the guide lines are
ancillary lines.
 The guide lines are ancillary lines and do not change even if the steering
wheel is turned.
 Depicted distances between objects and flat surfaces differ from actual
distances.
 Do not use the system if the trunk/back door is not completely closed.
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2-4. Using other driving systems
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