Mazda CX-9 2019 Owner's Manual page 351

When Driving
i-ACTIVSENSE
Side camera
Obstruction
Margin of error
Rear camera
Margin of error
Obstruction
There is a steep up or down grade in the road at the front or rear of the vehicle
If there is a steep up or down grade in the road at the front or rear of the vehicle,
obstructions picked up by the camera can appear farther or closer than the actual distance
from the vehicle.
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