Select "Camera Setting" button on "Service" screen.
Fig 1: Scantool Display - Map Service
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Draw base lines 0.5 m (1.64 ft) behind the vehicle and width +0.4 m (1.31 ft) [+0.2 m (0.66 ft) each for right and left] and align the guide line over the base lines.