Note
Front Drive Belt
Verify that the drive belt auto tensioner indicator mark does not exceeds the limit.

Drive belt
Drive belt replacementMazda 6 Service Manual: Control system
L.H.D.
R.H.D.
...
Mazda 6 Service Manual: Rear View Monitor Operation
The operation of the rear view monitor when reversing the vehicle varies depending
on the traffic, road, and vehicle conditions. The amount of steering and the timing
also varies depending on conditions, so confirm the surrounding conditions directly
with your eyes and steer the vehicle in acc ...