Ram Trucks 2015 ProMaster - Owner Manual - Manual (Page 114)

When the vehicle is shifted out of REVERSE and/or
when the rear doors are closed, the rear camera mode is
exited and the navigation or audio screen appears again.
When displayed, static grid lines will illustrate the width
of the vehicle and will show separate zones that will help
indicate the distance to the rear of the vehicle. The
following table shows the approximate distances for each
zone:
Zone Distance to the rear of the vehicle
Red 0 - 1 ft (0 - 30 cm)
Yellow 1 ft - 3 ft (30 cm - 1 m)
Green 3 ft or greater (1 m or greater)
Rear Back Up Camera Location
112 UNDERSTANDING THE FEATURES OF YOUR VEHICLE