key battery MAZDA MODEL CX-3 2021 User Guide

This is for improved exhaust gas
purification and does not indicate any
parts defect.
Engine-starting is controlled by the
spark ignition system.
This system meets all Canadian
Interference-Causing Equipment
Standard requirements regulating the
impulse electrical field strength of radio
noise.
1. Make sure you are carrying the 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).
NOTE
(Manual transaxle)
The starter will not operate if the
clutch pedal is not depressed
sufficiently.
(Automatic transaxle)
The starter will not operate if the
selector lever is not in P or N and the
brake pedal is not depressed
sufficiently.
6. Verify that the KEY indicator light (green) in the inst rument cluster and
the push button start indicator light
(green) illuminate.

Indicator light
Push button start
NOTE
If the push button start indicator
light (green) flashes, make sure that
the key is being carried.
If the push button start indicator
light (green) flashes with the key
being carried, touch the key to the
push button start and start the
engine. Refer to Engine Start
Function When Key Battery is Dead
on page 4-8.
When Driving
Start/Stop Engine
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CAUTION
If the KEY warning light (red)
illuminates, or the push button start
indicator light (amber) flashes, this
could indicate a problem with the
engine starting system. This may
prevent the engine from starting or
from switching the ignition to ACC or
ON. Have your vehicle inspected at an
Authorized Mazda Dealer as soon as
possible.
NOTE
Under the following conditions, the
KEY warning light (red) flashes after
the push button start is pressed. This
informs the driver that the push
button start will not switch to ACC
even if it is pressed from off.
The key battery is dead.
The key is out of operational
range.
The key is placed in areas where it
is difficult for the system to detect
the signal (page 3-8).
A key from another manufacturer
similar to the key is in the
operational range.
(Forced engine starting method)
If the KEY warning light (red)
illuminates, or the push button start
indicator light (amber) flashes, this
could indicate that the engine may
not start using the usual starting
method. Have your vehicle inspected
at an Authorized Mazda Dealer as
soon as possible. If this occurs, the
engine can be force-started. Press
and hold the push button start until
the engine starts. Other procedures
necessary for starting the engine,
such as having the key in the cabin,
and depressing the clutch pedal
(manual transaxle) or the brake
pedal (automatic transaxle) are
required.
When the engine is force-started, the
KEY warning light (red) remains
illuminated and the push button start
indicator light (amber) remains
flashing.
(Automatic transaxle)
When the selector lever is in the
neutral (N) position, the KEY
indicator light (green) and the push
button start indicator light (green)
do not illuminate.
7. Press the push button start after both
the KEY indicator light (green) in the
instrument cluster and the push button
start indicator light (green) illuminate.
NOTE
After starting the engine, the push
button start indicator light (amber)
turns off and the ignition switches to
the ON position.
When Driving
Start/Stop Engine
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After pressing the push button start
and before the engine starts, the
operation sound of the fuel pump
motor from near the fuel tank can be
heard, however, this does not
indicate a malfunction.
8. After starting the engine, let it idle for about ten seconds.
NOTE
Whether the engine is cold or warm,
it should be started without the use
of the accelerator.
If the engine does not start the first
time, refer to Starting a Flooded
Engine under Emergency Starting. If
the engine still does not start, have
your vehicle inspected by an
Authorized Mazda Dealer (page
7-20).
▼Engine Start Function When Key
Battery is Dead
CAUTION
When starting the engine by holding the
transmitter over the push button start due
to a dead key battery or a malfunctioning
key, be careful not to allow the following,
otherwise the signal from the key will not
be received correctly and the engine may
not start.

Metal parts of other keys or metal objects
touch the key.
Spare keys or keys for other vehicles
equipped with an immobilizer system
touch or come near the key.
 Devices for electronic purchases, or
security passage touch or come near the
key.
If the engine cannot be started due to a
dead key battery, the engine can be started
using the following procedure:
1. Continue to depress the brake pedal firmly until the en gine has completely
started.
2. (Manual transaxle)
Continue to depress the clutch pedal
firmly until the en gine has completely
started.
3. Make sure that the push button start
indication light (green) flashes.
4. Align the center area of the emblem on the transmitter with the center area of
the push button st art while the push
button start indicator light (green)
flashes.

Indicator light
Push button start
Key
Emblem
When Driving
Start/Stop Engine
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Turning the Engine Off
WA R N I N G
Do not stop the engine while the vehicle is
moving:
Stopping the engine while the vehicle is
moving for any reason other than in an
emergency is dangerous. Stopping the
engine while the vehicle is moving will
result in reduced braking ability due to the
loss of power braking, which could cause
an accident and serious injury.
1. Stop the vehicle completely.
2.(Manual transaxle)
Shift into neutral and set the parking
brake.
(Automatic transaxle)
Shift the selector lever to the P
position and set the parking brake.
3. Press the push button start to turn off
the engine. The ignition position is off.
CAUTION
When leaving the vehicle, make sure the
push button start is off.
NOTE
The cooling fan in the engine
compartment could turn on for a few
minutes after the i gnition is switched
from ON to OFF, whether or not the A/C
is on or off, to cool the engine
compartment quickly.
When the push button start is pressed
from ON to ACC or OFF, the KEY
indicator light (green) may flash for
approximately 30 seconds indicating
that the remaining battery power of the
key is low.
Replace with a new battery before the
key becomes unusable.
Refer to Key Battery Replacement on
page 6-34.
(Automatic transaxle)
If the engine is turned off while the
selector lever is in a position other than
P, the ignition switches to ACC.
▼ Emergency Engine Stop
Continuously pressing the push button
start or quickly pressing it any number of
times while the engine is running or the
vehicle is being driven will turn the engine
off immediately. The ignition switches to
ACC.
When Driving
Start/Stop Engine
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6Maintenance and Care
How to keep your Mazda in top condition.
Essential Information........................6-2 Introduction.................................. 6-2
Scheduled Maintenance.................... 6-4 Scheduled Maintenance (U.S.A.,
Canada, and Puerto Rico)............. 6-4
Scheduled Maintenance
(Mexico)....................................... 6-9
Maintenance Monitor................. 6-14
Owner Maintenance........................ 6-17 Owner Maintenance
Precautions................................. 6-17
Hood........................................... 6-19
Engine Compartment
Overview.................................... 6-21
Engine Oil...................................6-22
Engine Coolant........................... 6-25
Brake/Clutch Fluid. .................... 6-27
Window Washer Flui d................ 6-27
Body Lubrication...... .................. 6-28
Wiper Blades.............................. 6-29
Battery........................................ 6-32
Key Battery Replacement........... 6-34
Tires............................................ 6-36
Light Bulbs................................. 6-40
Fuses........................................... 6-47
Appearance Care............................. 6-53 Exterior Care.............................. 6-53
Interior Care................................6-59
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▼Battery Maintenance
To get the best service from a battery:
Keep it securely mounted.
Keep the top clean and dry.
Keep terminals and connections clean,
tight, and coated with petroleum jelly or
terminal grease.
Rinse off spilled electrolyte immediately
with a solution of water and baking
soda.
If the vehicle will not be used for an
extended time, disconnect the battery
cables and charge the battery every 6
weeks.
▼Battery Replacement
Contact an Authorized Mazda Dealer for
battery replacement.
Key Battery Replacement
If the buttons on the transmitter are
inoperable and the operation indicator
light does not flash, the battery may be
dead.
Replace with a new battery before the
transmitter becomes unusable.
CAUTION

Make sure the battery is installed
correctly. Battery leakage could occur if it
is not installed correctly.
 When replacing the battery, be careful
not to touch any of the internal circuitry
and electrical terminals, bend the
electrical terminals, or get dirt in the
transmitter as the transmitter could be
damaged.
 There is the danger of explosion if the
battery is not correctly replaced.
 Dispose of used batteries according to
the following instructions.
 Insulate the plus and minus terminals
of the battery using cellophane or
equivalent tape.
 Never disassemble.
 Never throw the battery into
fire or
water.
 Never deform or crush.
 Replace only with the same type battery
(CR2032 or equivalent).
The following conditions indicate that the
battery power is low:
The KEY indicator light (green) flashes
in the instrument cluster for about 30
seconds after the engine is switched
OFF.
Maintenance and Care
Owner Maintenance
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The system does not operate and the
operation indicator light on the
transmitter does not flash when the
buttons are pressed.
The system's operational range is
reduced.
Replacing the battery at an Authorized
Mazda Dealer, is recommended to prevent
damage to the key. If replacing the battery
by yourself, follow the instruction.
Replacing the key battery
1. Remove the lower cover while pressing the knob in the direction of
the arrow.
2. Press in the tab to unlock the upper
cover.
3. Insert a tape-wrapped flatheadscrewdriver into the gap and slide it in
the direction of the arrow.
4. Twist the flathead screwdriver in thedirection of the arrow and remove the
upper cover.
5. Remove the cap using the
tape-wrapped flat head screwdriver.
6. Remove the battery using
tape-wrapped flat head screwdriver.
Maintenance and Care
Owner Maintenance
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KEY Warning Light
Take the appropriate action and verify that the warning light turns off.
SignalCause Action to be taken
(Red)
(Flashing) The advanced key battery is dead. Replace the key battery (page 6-34).
The advanced key is
not within the opera‐
tion range. Bring the advanced key into the operation
range (page 3-8).
The advanced key is placed in areas inside
the cabin where it is difficult for the key to
be detected.
A key from another manufacturer similar to
the advanced key is in the operation range. Take the key from another manufacturer
similar to the advanced key out of the op
‐
eration range.
Without the ignition switched off, the ad ‐
vanced key is taken out of the cabin, and
then all the doors are closed. Bring the advanced ke
y back into the cab‐
in.
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
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NOTE
To allow the front passenger occupant
classification sensor to function
properly, do not place and sit on an
additional seat cushion on the front
passenger's seat. The sensor may not
function properly because the additional
seat cushion could cause sensor
interference.
If a small child is seated on the front
passenger's seat, the warning beep may
not operate.
Mexico
If the vehicle speed exceeds about 20
km/h (12 mph) with the driver or front
passenger's seat belt unfastened, a warning
beep sounds continuously. If the seat belt
remains unfastened, the beep sound stops
once and then cont inues for about 90
seconds. The beep stops after the driver or
front passenger's seat belt is fastened.
Until a seat belt is fastened or a given
period of time has elapsed, the beep sound
will not stop even if the vehicle speed falls
below 20 km/h (12 mph).
NOTE
Placing heavy items on the front
passenger's seat may cause the front
passenger's seat belt warning function
to operate depending on the weight of
the item.
To allow the front passenger seat weight
sensor to function properly, do not place
and sit on an additional seat cushion on
the front passenger's seat. The sensor
may not function properly because the
additional seat cushion could cause
sensor interference.
If a small child is seated on the front
passenger's seat, the warning beep may
not operate.
▼ Ignition Not Switched Off (STOP)
Warning Beep
If the driver's door is opened with the
ignition switched to ACC, a beep will be
heard continuously in the cabin to notify
the driver that the ignition has not been
switched OFF (STOP). Under this
condition, the keyless entry system will
not operate, the vehicle cannot be locked,
and the battery voltage will be depleted.
▼Key Removed from Vehicle Warning
Beep
Vehicles with advanced keyless function
If the key is taken out of the vehicle while
the ignition is not switched OFF and all
the doors are closed, the beep which
sounds outside of the vehicle will be heard
6 times, the beep which sounds inside the
vehicle will be
heard 6 times.
Vehicles without advanced keyless
function
If the key is taken out of the vehicle while
the ignition is not switched OFF and all
the doors are closed, a beep will be heard
in the cabin 6 times.
NOTE
Because the key utilizes low-intensity
radio waves, the Key Removed From
Vehicle Warning may activate if the key is
carried together with a metal object or it
is placed in a poor si gnal reception area.
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
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Index
A
Accessory Socket............................ 5-144
Active Driving Display..................... 4-18
Adaptive Front Lighting System
(AFS)................................................. 4-78
Add-On Non-Genuine Parts and
Accessories........................................ 8-19
Advanced Key
Advanced keyless entry system..... 3-9
Operational range........................ 3-10
Advanced Smart City Brake Support
(Advanced SCBS)........................... 4-116
Collision warning.... .................. 4-118
Smart City Brake Support (SCBS)
Indicator Light (Red)................. 4-118
Stopping the Advanced Smart City
Brake Support (Advanced SCBS)
system operation........................ 4-118
Air Bag Systems............................... 2-51
Air Bag/Front Seat Belt Pretensioner
System Warning Beep....................... 7-42
Ambient Temperature Display.......... 4-15
Antilock Brake System (ABS).......... 4-65
Audio Control Switch
Adjusting the Volume.................. 5-16
Seek Switch................................. 5-16
Audio Set [Type A (non-touchscreen)] AUX.............................................5-24
Bluetooth®.................................. 5-31
Clock............................................5-22
Error Indications.......................... 5-30
iPod mode....................................5-28
Power/Volume/Sound Controls... 5-20
Radio............................................5-23
Troubleshooting.......... ................. 5-59
USB............................................. 5-25
Voice Recognition.... ................... 5-55
Audio Set [Type B (touchscreen)]
Android Auto™........................... 5-91
Apple CarPlay............................. 5-85
Applications............................... 5-126
AUX.............................................5-79
Bluetooth®.................................. 5-95
Radio............................................5-71
Satellite Radio........ ..................... 5-75
Settings...................................... 5-123
Troubleshooting........... .............. 5-127
USB............................................. 5-80
Voice Recognition..................... 5-120
Volume/Display/Sound
Controls....................................... 5-68
Audio System Antenna........................................5-19
Appendix................................... 5-135
Audio Control Switch................. 5-16
Audio Set [Type A (non-
touchscreen)]............................... 5-20
Audio Set [Type B
(touchscreen)].............................. 5-63
AUX/USB mode..........................5-17
Before Using the Audio
System......................................... 5-16
AUTOHOLD..................................... 4-59
AUTOHOLD Warning Beep.............7-44
Automatic Transaxle Active Adaptive Shift (AAS)...... 4-31
Automatic transaxle controls....... 4-29
Direct mode................................. 4-38
Driving tips..................................4-39
Manual shift mode.......................4-32
Shift-lock system...... ................... 4-30
Transaxle ranges.......................... 4-30
B
Battery............................................... 6-32 Maintenance.................................6-34
Replacement................................ 6-34
Specifications.................................9-4
Battery runs out.................................7-17 Jump-Starting...............................7-17
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