Mazda CX-9 2016 Owner's Manual page 94

Before Driving
Doors and Locks
NOTE
When the ignition is switched to ACC
or ON, the vehicle lock-out prevention
feature prevents you from locking
yourself out of the vehicle.
All doors and the liftgate will
automatically unlock if they are locked
using the power door locks with any
door or the liftgate open.
The vehicle lock-out prevention feature
does not operate while the ignition is
switched off.
When any door is opened from the
outside while the key is inside the
vehicle, the closed doors are locked. All
the doors are automatically unlocked by
closing the open door.
(With the advanced keyless function)
The beep sound is heard for about 10
seconds to notify the driver that the key
has been left in the vehicle.
(Without the advanced keyless
function)
The horn sound is heard twice to notify
the driver that the key has been left in
the vehicle.
3–12
(Door unlock (control) system with
collision detection)
This system automatically unlocks
the doors and the liftgate in the event
the vehicle is involved in an accident
to allow passengers to get out of the
vehicle immediately and prevent being
trapped inside. While the ignition
is switched ON and in the event the
vehicle receives an impact strong
enough to in ate the air bags, all the
doors and the liftgate are automatically
unlocked after about 6 seconds have
elapsed from the time of the accident.
The doors and the liftgate may not
unlock depending on how an impact
is applied, the force of the impact, and
other conditions of the accident.
If door-related systems or the battery
is malfunctioning, the doors and the
liftgate will not unlock.