Mazda 3 Sedan 2020 Owner's Manual page 114

Before Driving
Doors and Locks
NOTE
Always stop the engine and lock the

doors. In addition, to prevent theft of
valuables, do not leave them inside
the cabin.
If the key is left in the following areas

and you leave the vehicle, the doors
may be locked depending on the
radio wave conditions even if the key
is left in the vehicle.
Around the dashboard

In the storage compartments such

as the glove compartment or the
center console
On the rear parcel shelf (4–door)

Next to a communication device

such as a mobile phone
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, fuel-filler lid, and 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 all doors, fuel-filler lid, and
liftgate are locked using the power
door lock with any door or the
liftgate/trunk lid open, the closed
doors, fuel-filler lid, and liftgate are
locked. After that, when all doors
and the liftgate/trunk lid are closed,
all doors and the liftgate/trunk lid
are locked. However, if the key is
inside the vehicle, all doors,
fuel-filler lid, and liftgate are
automatically unlocked.
3-12
(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.
(Door unlock (control) system with

collision detection)
This system automatically unlocks the
doors, fuel-filler lid, and 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 inflate the
air bags, all the doors, fuel-filler lid,
and liftgate are automatically
unlocked after about 6 seconds have
elapsed from the time of the
accident.
The doors, fuel-filler lid, and 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,
fuel-filler lid, and liftgate may not
unlock depending on your vehicle
type.