2017 MAZDA MX5 MIATA key battery

3 –2 Before Driving
Keys
KeysWARNINGDo 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. Children may find these keys to
be an interesting toy to play with and
could cause the power windows or
other controls to operate, or even make
the vehicle move.
CAUTION 
Because the key (transmitter) uses
low-intensity radio waves, it may not
function correctly under the following
conditions: 
The key is carried with
communication devices such as
cellular phones. 
The key contacts or is covered by a
metal object. 
The key is near electronic devices such
as personal computers. 
Non-Mazda genuine electronic
equipment is installed in the vehicle. 
There is equipment which discharges
radio waves near the vehicle. 
The key (transmitter) may consume
battery power excessively if it receives
high-intensity radio waves. Do not place
the key near electronic devices such as
televisions or personal computers. 
To avoid damage to the key
(transmitter), DO NOT: 
Drop the key. 
Get the key wet. 
Disassemble the key. 
Expose the key to high temperatures
on places such as the dashboard or
hood, under direct sunlight. 
Expose the key to any kind of
magnetic field. 
Place heavy objects on the key. 
Put the key in an ultrasonic cleaner. 
Put any magnetized objects close to
the key.
A code number is stamped on the plate
attached to the key set; detach this plate
and store it in a safe place (not in the
vehicle) for use if you need to make a
replacement key (auxiliary key).
Also write down the code number and
keep it in a separate safe and convenient
place, but not in the vehicle.
If your key (auxiliary key) is lost, consult
your Authorized Mazda Dealer and have
your code number ready.
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3 –4 Before Driving
Keys
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.
NOTE 
The keyless entry system operation may
vary due to local conditions. 
The keyless entry system is fully
operational (door/fuel-filler lid lock/
unlock) when the ignition is switched
off. The system does not operate if the
ignition is switched to any position
other than off. 
If the key does not operate when
pressing a button or the operational
range becomes too small, the battery
may be weak. To install a new battery,
refer to Key Battery Replacement (page
6-38 ). 
Battery life is about one year. Replace
the battery with a new one if the KEY
indicator light (green) flashes in the
instrument cluster (for vehicles with
a type A instrument cluster (page
4-26 ), messages are displayed in
the instrument cluster). Replacing
the battery about once a year is
recommended because the KEY warning
light/indicator light may not illuminate
or flash depending on the rate of battery
depletion. 
Additional keys can be obtained at
an Authorized Mazda Dealer. Up to
6 keys can be used with the keyless
functions per vehicle. Bring all keys
to an Authorized Mazda Dealer when
additional keys are required.
Transmitter Operation buttonsOperation indicator light
NOTE 
The headlights turn on/off by operating
the transmitter. Refer to Leaving Home
Light on page 4-49 . 
(With theft-deterrent system)
The hazard warning lights flash when
the theft-deterrent system is armed or
turned off.
Refer to Theft-Deterrent System on page
3-49 . 
(With the advanced keyless function)
A beep sound can be heard for
confirmation when the doors and the
fuel-filler lid are locked/unlocked using
the key. If you prefer, the beep sound
can be turned off.
The volume of the beep sound can also
be changed.
Refer to Personalization Features on
page 9-9 .
Use the following procedure to change
the setting.
1. Switch the ignition off and close
both of the doors and the trunk lid.
2. Open the driver's door.
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3 –8 Before Driving
Advanced Keyless Entry System
*Some models.Advanced Keyless Entry
System *
WARNINGRadio waves from the key may affect
medical devices such as pacemakers:
Before using the key near people who
use medical devices, ask the medical
device manufacturer or your physician
if radio waves from the key will affect
the device.
The advanced keyless function allows you
to lock/unlock the door , or open the trunk
lid while carrying the key.
System malfunctions or warnings are
indicated by the following warning lights
or beeps. 
Request switch Inoperable Warning
Beep
Refer to Request Switch Inoperable
Warning Beep (With the advanced
keyless function) on page 7-50 .
Key Left-in-Trunk Warning Beep
Refer to Key Left-in-luggage
Compartment Warning Beep (With the
advanced keyless function) on page
7-50 . 
Key Left-in-vehicle Warning Beep
Refer to Key Left-in-vehicle Warning
Beep (With the advanced keyless
function) on page 7-50 . NOTE
The advanced keyless entry system
functions can be deactivated to prevent
any possible adverse effect on a user
wearing a pacemaker or other medical
device. If the system is deactivated, you
will be unable to start the engine by
carrying the key. Consult an Authorized
Mazda Dealer for details. If the advanced
keyless entry system has been deactivated,
you can start the engine by following the
procedure indicated when the key battery
goes dead.
Refer to Engine Start Function When Key
Battery is Dead on page 4-8 .
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3 –9 Before Driving
Advanced Keyless Entry System
Operational Range The system operates only when the driver
is in the vehicle or within operational
range while the key is being carried. NOTE
When the battery power is low, or in
places where there are high-intensity radio
waves or noise, the operational range
may become narrower or the system may
not operate. For determining battery
replacement, Refer to Keyless Entry
System on page 3-3 .
Locking, Unlocking the Doors 80cm (31in)
80cm (31in) Exterior antenna
Operational range
NOTE 
The system may not operate if you
are too close to the windows or door
handles. 
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 or the
center console 
Next to a communication device such
as a mobile phone Opening the Trunk Lid 80cm (31in)Exterior antenna
Operational range
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3 –10 Before Driving
Doors and Locks
Door LocksWARNINGAlways 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 both 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 both the windows and
convertible top, 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, 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.
CAUTION 
Always confirm the conditions around
the vehicle before opening/closing the
doors and use caution during strong
winds or when parked on an incline. Not
being aware of the conditions around
the vehicle is dangerous because fingers
could get caught in the door or a passing
pedestrian could be hit, resulting in an
unexpected accident or injury. 
If the power window does not go up or
down automatically because the battery
is dead, slowly open/close the power
window while pressing the glass inward.
Otherwise, the power window may
contact the convertible top and the door
cannot be opened/closed resulting in
damage to the window.
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3 –11 Before Driving
Doors and Locks
*Some models.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 or the
center console 
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.
Both doors will automatically unlock if
they are locked using the power door
locks with any door open.
If both the doors are closed even though
the trunk lid is open, both the doors will
lock.
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.
Both 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. 
(Door unlock (control) system with
collision detection) *
This system automatically unlocks the
doors 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, both the
doors are automatically unlocked after
about 6 seconds have elapsed from the
time of the accident.
The doors 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 will not
unlock. 
When opening a door, the power
windows open a little automatically.
When closing the door, the power
windows close automatically. This is a
function for improving the sealability,
and it does not mean there is a problem.
If the vehicle battery is disconnected for
vehicle maintenance or other reasons,
the power windows will not open
or close automatically. If the power
windows do not open or close, the
automatic open/close mechanism for the
windows must be reset.
Refer to Operating the Power Windows
on page 3-31 .
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3 –19 Before Driving
Doors and Locks Opening and Closing the Trunk
LidOpening the trunk lid
Using the remote release button
Push the release button.
The remote release button function can
be disabled by locking the doors using
the transmitter, auxiliary key, or a request
switch to prevent an intruder in the vehicle
from opening the trunk.
To enable the remote release button
operation, unlock the doors by using the
transmitter, auxiliary key, or a request
switch, or switch the ignition ON.
NOTE
The remote release button cannot be
disabled by locking the doors using the
door-lock switch/door-lock knob.
Refer to Locking, Unlocking with Door-
Lock Switch on page 3-14 .
Refer to Locking, Unlocking with Door-
Lock Knob on page 3-17 . Using the electric trunk lid opener
(With the advanced keyless function)
A trunk lid can also be opened while the
key is being carried.
Press the electric trunk lid opener and raise
the trunk lid when the latch releases. Electric trunk lid
opener
NOTE 
When opening the trunk lid with the
doors locked, it may require a few
seconds for the trunk lid latch to release
after the electric trunk lid opener is
pressed. 
The trunk lid can be closed when the
doors are locked with the key left in the
vehicle. However, to prevent locking the
key in the vehicle, the trunk lid can be
opened by pressing the electric trunk lid
opener. If the trunk lid cannot be opened
despite doing this procedure, first push
the trunk lid completely closed, then
press the electric trunk lid opener to
fully open the trunk lid. 
If the vehicle battery is dead or there
is a malfunction in the electrical
system and the trunk lid cannot be
unlocked, the trunk lid can be opened by
performing the emergency procedure.
Refer to When Trunk Lid Cannot be
Opened on page 7-52 .
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3 –49 Before Driving
Security System
*Some models.Theft-Deterrent System *
If the theft-deterrent system detects an
inappropriate entry into the vehicle,
which could result in the vehicle or its
contents being stolen, the alarm alerts the
surrounding area of an abnormality by
sounding the horn and flashing the hazard
warning lights.
The system will not function unless it's
properly armed. So when you leave the
vehicle, follow the arming procedure
correctly.
OperationSystem triggering conditions
The horn sounds intermittently and the
hazard warning lights flash for about 30
seconds when the system is triggered by
any one of the following: 
Unlocking a door with the key, door
lock switch, or an inside door-lock knob. 
Forcing open a door, the hood or the
trunk lid. 
Opening the hood by operating the hood
release handle. 
Switching the ignition ON without using
the push button start.
If the system is triggered again, the lights
and horn will activate until the driver's
door is unlocked with the transmitter.
(With the advanced keyless function)
The lights and horn can also be
deactivated by pressing the request switch
on a door. NOTE 
The trunk lid does not open while the
theft-deterrent system is operating. 
If the battery goes dead while the theft-
deterrent system is armed, the horn will
activate and the hazard warning lights
will flash when the battery is charged or
replaced.
How to Arm the System 1. Close the windows and the convertible
top securely.
2. Switch the ignition OFF.
3. Make sure the hood, the doors, and the
trunk lid are closed.
4. Press the lock button on the transmitter
or lock the driver's door from the
outside with the auxiliary key.
The hazard warning lights will flash
once.
The following method will also arm the
theft-deterrent system:
Press the door-lock switch “ ” while
any door is open and then close both of
the doors.
(With the advanced keyless function)
Press a request switch.

The security indicator light in the
instrument cluster flashes twice per
second for 20 seconds.
5. After 20 seconds, the system is fully
armed.
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