Mazda 3 Sedan 2020 Owner's Manual page 378

When Driving
Rear View Monitor
(Predicted vehicle path assist lines

display type)
If force is applied to the steering
wheel, the guide lines may not
display. Loosen your grip on the
steering wheel to allow the guide
lines to display.
▼ Rear View Parking Camera
Location
4–Door
1. Rear view parking camera
4-224
5–Door
1. Rear view parking camera