Toyota Avensis Owner's Manual page 143

 Unstable items, such as dangling accessories or clothes hanging on the
coat hooks, are in the vehicle.
 A window is open.
 The vehicle is inside an automatic or high-pressure car washer.
 The vehicle experiences impacts, such as hail, lightning strikes, or other
kinds of repeated impacts or vibrations.
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 The vehicle is parked in a place where
extreme vibrations or noises occur,
such as in a parking garage.
 Ice or snow is removed from the vehi-
cle, causing the vehicle to receive
repeated impacts or vibrations.
 The wind or something similar causes a
frost cover to move.
1-6. Theft deterrent system
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