I found the answer, but it was in my 2010 Maxima owner’s manual.
This was taken from 2015 Murano Owner's Manual with my Maxima information 3a added in red.
AUTOMATIC DOOR LOCKS
● All doors lock automatically when the vehicle
speed reaches 15 MPH (24 km/h).
● All doors unlock automatically when the ignition
switch is placed in the OFF position.
The automatic unlock function can be deactivated
or activated. To deactivate or activate
the automatic door unlock system, perform
the following procedure:
1. Close all doors.
2. Place the ignition switch in the ON position.
3. Within 20 seconds of performing Step 2,
push and hold the power door lock switch to
the position (UNLOCK) for more than
five seconds.
3a. To change AUTO LOCK setting: push and hold
the power door lock switch to the (LOCK) poisiton
for more than 5 seconds.
4. When activated, the hazard indicator will
flash twice. When deactivated, the hazard
indicator will flash once.
5. The ignition switch must be placed in the
OFF and ON position again between each
setting change.
When the automatic door unlock system is deactivated,
the doors do not unlock when the ignition
switch is placed in the OFF position. To unlock
the door manually, use the inside lock knob or the
power door lock switch (driver’s or front passenger’s
side).
NOTE:
The automatic door unlock function can be
changed using the Vehicle Settings in the
vehicle information display. The “Selective
Unlock” choices are:
● ON
● OFF