Honda Odyssey 2018 Owner's Manual page 210

uuAdjusting the MirrorsuPower Door Mirrors
■
Reverse Tilt Door Mirror
Slide the selector switch to left or
right to tilt down either side door
mirror.
* Not available on all models
208
*
If activated, either side door mirror
automatically tilts downward when you put
the transmission into R ; this improves close-
(
in visibility on the selected side of the vehicle
when backing up. The mirror automatically
returns to its original position when you take
the transmission out of ( R .
To activate this feature, set the power mode
to ON and slide the selector switch to the left
or right side.