2012 MAZDA MODEL 3 HATCHBACK ECU

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If your vehicle is also equipped with a driver and front passenger occupant
classification system, refer to the Driver and Front Passenger Occupant Classification
System (page 2-57) for details.
If your vehicle is equipped with a driver and front passenger occupant classification
system, the front passenger air bag deactivation indicator light illuminates for a specified
time after the ignition is switched ON.
Small children must be protected by a child-restraint system as stipulated by law in every
state and province. In certain states and provinces, larger children must use a child-restraint
system (page 2-26).
Carefully consider which child-restraint system is necessary for your child and follow the
installation directions in this Owner's Manual as well as the child-restraint system
manufacturer's instructions.
WARNING
Seat belts must be worn in air bag equipped vehicles:Depending only on the air bags for protection during an accident is dangerous.
Alone, air bags may not prevent serious injuries. The appropriate air bags can be
expected to inflate only in the first accident, such as frontal, near frontal, side
collisions that are at least moderate. Vehicle occupants should always wear seat
belts.
Children should not ride in the front passenger seat: Placing a child, 12 years or under, in the front seat is dangerous. The child could be
hit by a deploying air bag and be seriously injured or even killed. Even if the front
passenger air bag deactivation indicator light illuminates, always move the front
passenger seat as far back as possible. A sleeping child is more likely to lean against
the door and be hit by the side air bag in a moderate collision to the front-passenger
side of the vehicle. Whenever possible, always secure a child 12 years and under on
the rear seat with an appropriate child-restraint system for the child's age and size.
Essential Safety Equipment
SRS Air Bags
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Do not increase the total seated weight on the front passenger seat:When an infant or small child sits on the front passenger seat, increasing the total
seated weight on the front passenger seat is dangerous. The front passenger seat
weight sensors will detect the increased total seated weight, which could result in the
unexpected deployment of the front passenger front and side air bags and seat belt
pretensioner system in an accident and may cause serious injury. Increasing the total
seated weight on the front passenger seat could result in the front passenger front
and side air bags and seat belt pretensioner system deployment in an accident under
the following conditions, for example:
ØLuggage or other items are placed on the seat with the child in the child-restraint
system.
Ø A rear passenger or luggage push or pull down on the front passenger seatback.
Ø A rear passenger steps on the front passenger seat rails with their feet.
Ø Luggage or other items are placed on the seatback or hung on the head restraint.
Ø Heavy items are placed in the seatback map pocket.
Ø The seat is washed.
Ø Liquids are spilled on the seat.
Ø The front passenger seat is moved backward, pushing into luggage or other items
placed behind it.
Ø The front passenger seatback contacts the rear seat.
Ø Luggage or other items are placed between the front passenger seat and driver
seat.
Ø Any accessories which might increase the total seated weight on the front
passenger seat are attached to the front passenger seat.
The front passenger front and side air bags and seat belt pretensioner systems will
deactivate if the front passenger air bag deactivation indicator light illuminates.
CAUTION
Ø To assure proper deployment of the front air bag and to prevent damage to the
sensors in the front seat bottoms:
ØDo not place sharp objects on the front seat bottoms or leave heavy luggage on
them.
ØDo not spill any liquids on the front seats or under the front seats.
Ø To allow the sensors to function properly, always perform the following:
ØAdjust the front seats as far back as possible and always sit upright against the
seatbacks with seat belts worn properly.
ØIf you place your child on the front passenger seat, secure the child-restraint
system properly and slide the front passenger seat as far back as possible (page
2-36).
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Essential Safety Equipment
SRS Air Bags
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NOTElThe system requires about 10 seconds to alternate between turning the front passenger front and
side air bags and seat belt pretensioner system on or off.
lThe front passenger air bag deactivation indicator light may illuminate repeatedly if luggage or
other items are put on the front passenger seat, or if the temperature of the vehicle's interior
changes suddenly.
lThe front passenger air bag deactivation indicator light may illuminate for 10 seconds if the total
seated weight on the front passenger seat changes.
lThe air bag/front seat belt pretensioner system warning light might illuminate if the front
passenger seat receives a severe impact.
lIf the front passenger air bag deactivation indicator light does not illuminate after installing a
child-restraint system on the front passenger seat, first, re-install your child-restraint system
according to the procedure in this owner's manual. Then, if the front passenger air bag
deactivation indicator light still does not illuminate, install the child-restraint system on the rear
seat and consult an Authorized Mazda Dealer as soon as possible.
lIf the front passenger air bag deactivation indicator light illuminates when an adult is seated in
the front passenger seat, have the passenger re-adjust their posture by sitting with their feet on the
floor, and then re-fastening the seat belt. If the front passenger air bag deactivation indicator light
still illuminates, move the passenger to the rear seat. If sitting in the rear seat is not possible, slide
the front passenger seat as far back as possible.
qDriver and Front Passenger Buckle Switches
The buckle switches on the front seat belts detect whether or not the front seat belts are
securely fastened and further control the deployment of the air bags.
Essential Safety Equipment
SRS Air Bags
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Form No.8BY7-EC-11F

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3Knowing Your Mazda
Explanation of basic operations and controls; opening/closing and adjustment
of various parts.
Advanced Keyless Entry and Start System ................................ 3-2Advanced Keysí...................................................................... 3-2
Operation Using Advanced Keyless Functions ......................... 3-7
Operation Using Advanced Key Functions ............................. 3-16
Advanced Key Suspend Function ........................................... 3-20
Warning Lights and Beep Sounds ........................................... 3-21
When Warning Indicator/Beep is Activated ............................ 3-24
Doors and Locks ......................................................................... 3-25 Keys ........................................................................................ 3-25
Keyless Entry System
í.......................................................... 3-26
Door Locks ............................................................................. 3-32
Liftgate (5 Door) ..................................................................... 3-37
Trunk Lid (4 Door) ................................................................. 3-41
Inside Trunk Release Lever ..................................................... 3-43
Power Windows ...................................................................... 3-45
Fuel-Filler Lid and Cap ........................................................... 3-48
Hood ....................................................................................... 3-49
Moonroof
í............................................................................. 3-51
Security System ........................................................................... 3-54 Immobilizer System (with Advanced Key) ............................. 3-54
Immobilizer System (without Advanced Key) ........................ 3-58
Theft-Deterrent System
í........................................................ 3-62
Steering Wheel and Mirrors ...................................................... 3-65 Steering Wheel ........................................................................ 3-65
Mirrors .................................................................................... 3-65
3-1íSome models.
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To unlock
Driver's door request switch
To unlock the driver's door, press the
request switch. A beep sound will be
heard twice and the hazard warning lights
will flash twice.
To unlock all doors and the liftgate, press
the request switch again within 5 seconds
and two more beep sounds will be heard.
Front passenger door request switch
To unlock the doors and the liftgate, press
the request switch. A beep sound will be
heard twice and the hazard warning lights
will flash twice.
NOTE
lConfirm that all doors and the liftgate are
securely locked.
lAll doors and the liftgate cannot be locked
when any door or the liftgate is open.
lA beep sound is heard for confirmation
when the doors and the liftgate are locked/
unlocked using the request switch. If you
prefer, the beep sound can be turned off
(page 10-12).
lThe system can be set to unlock all doors by
performing a single operation.
Refer to Personalization Features on page
10-12.
lThe setting can be changed so that the
doors and the liftgate are locked
automatically without pressing the request
switch (page 10-12).
(Auto-lock function)
A beep sound is heard when all doors and
the liftgate are closed while the advanced
key is being carried. All doors and the
liftgate are locked automatically after about
3 seconds when the advanced key is out of
the operational range. Also, the hazard
warning lights flash once. (Even if the
driver is in the operational range, all doors
and the liftgate are locked automatically
after about 30 seconds.)
If you are out of the operational range
before the doors and the liftgate are
completely closed or another advanced key
is left in the vehicle, the auto-lock function
will not work. Always make sure that all
doors and the liftgate are closed and locked
before leaving the vehicle.
l(Auto re-lock function)
After unlocking all doors and the liftgate by
pressing the request switch, all doors and
the liftgate will automatically lock if any of
the following operations are not performed
within about 30 seconds. If your vehicle has
a theft-deterrent system, the hazard
warning lights will flash for confirmation.
lA door or the liftgate/trunk lid is opened.lThe auxiliary key is inserted into the key
slot.
lThe push button start is in any position
except off.
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Advanced Keyless Entry and Start System
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WARNING
Before leaving the driver's seat, always
switch the ignition off, set the parking
brake, and make sure the shift lever is
in P (automatic transaxle) or in 1st gear
or R (manual transaxle):Leaving the driver's seat without
switching the ignition off, setting the
parking brake, and shifting the shift
lever to P (automatic transaxle) or to
1st gear or R (manual transaxle) is
dangerous. Unexpected vehicle
movement could occur which could
result in an accident.
In addition, if your intention is to
leave the vehicle for even a short
period, it is important to switch the
ignition off, as leaving it in another
position will disable some of the
vehicle's security systems and run the
battery down.
ACC (Accessory)
Some electrical accessories will operate
and the indicator light (ACC) illuminates.
In addition, for vehicles equipped with the
steering column lock function, the
steering wheel unlocks.
NOTE
The advanced keyless entry system does not
function while the push button start has been
pressed to ACC, and the doors will not lock/
unlock even if they have been locked manually.
ON
This is the normal running position after
the engine is started. The indicator light
(ON) turns off. (The indicator light (ON)
illuminates when the ignition is switched
ON and the engine is not running.)
The warning lights (except brakes) should
be inspected before the engine is started
(page 5-47).
Starting the engine
NOTE
lThe advanced key must be carried because
the advanced key carries an immobilizer
chip that must communicate with the engine
controls at short range.
lThe engine can be started when the push
button start is pressed from off, ACC, or
ON.
1. Make sure you are carrying the advanced key.
2. Occupants should fasten their seat belts.
3. Make sure the parking brake is on.
4. Continue to press the brake pedal firmly until the engine has completely
started.
5. (Manual transaxle)
Continue to press the clutch pedal
firmly until the engine has completely
started.
(Automatic transaxle)
Put the vehicle in park (P). If you must
restart the engine while the vehicle is
moving, shift into neutral (N).
Knowing Your Mazda
Advanced Keyless Entry and Start System
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5. Put in the new battery (CR1620 orequivalent) with the positive pole (
)
facing down.
6. Align the front and back covers and snap the transmitter shut.
7. Align the key with the transmitter as shown in the figure, and insert the key
until a click sound is heard.
CAUTION
Insert the key into the transmitter
securely until a click sound is heard.
If it is not inserted securely, it could
detach from the transmitter.
qService
If you have a problem with the keyless
entry system, consult an Authorized
Mazda Dealer.
If your transmitter is lost or stolen, consult
an Authorized Mazda Dealer as soon as
possible for a replacement and to make
the lost or stolen transmitter inoperative.
CAUTION
Radio equipment like this is governed
by laws in the United States.
Changes or modifications not
expressly approved by the party
responsible for compliance could void
the user's authority to operate the
equipment.
Knowing Your Mazda
Doors and Locks
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Door Locks
WARNING
Always take all children and pets with
you or leave a responsible person with
them:Leaving a child or a pet unattended
in a parked vehicle is dangerous. In
hot weather, temperatures inside a
vehicle can become high enough to
cause brain damage or even death.
Do not leave the key in your vehicle
with children and keep them in a place
where your children will not find or
play with them: Leaving children in a vehicle with the
key is dangerous. This could result in
someone being badly injured or even
killed.
Keep all doors locked when driving: Unlocked doors in a moving vehicle
are dangerous. Passengers can fall
out if a door is accidentally opened
and can more easily be thrown out in
an accident.
Always close all the windows and the
moonroof, lock the doors and take the
key with you when leaving your vehicle
unattended: Leaving your vehicle unlocked is
dangerous as children could lock
themselves in a hot vehicle, or
become trapped by climbing into the
trunk, which could result in death.
Also, a vehicle left unlocked becomes
an easy target for thieves and
intruders. After closing the doors, always verify
that they are securely closed:
Doors not securely closed are
dangerous, if the vehicle is driven
with a door not securely closed, the
door could open unexpectedly
resulting in an accident.
Always confirm the safety around the
vehicle before opening a door: Suddenly opening a door is
dangerous. A passing vehicle or a
pedestrian could be hit and cause an
accident.
qLocking, Unlocking with Key
The driver's door can be locked/unlocked
with the key.
Turn the key toward the front to lock,
toward the back to unlock.
Lock Unlock
NOTE
If your vehicle is equipped with a front
passenger door key cylinder, the door can be
locked/unlocked with the key.
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Doors and Locks
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