Guide lines which indicate the width of the vehicle are displayed on the screen as a reference to the approximate width of the vehicle in comparison to the width of the parking space you are about to back into.
Use this display view for parking your vehicle in a parking space or garage.

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Vehicle width guide lines
Guide lines serve as a reference to the approximate width of the vehicle.
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Distance guide lines
These guide lines indicate the approximate distance to a point measured from the vehicle's rear (from the end of the bumper).
The red line indicates the point about 0.5 m (19 in) from the rear bumper.
The yellow lines indicate the points about 1.0 m (39 in) and 2.0 m (78 in) from the rear bumper.