battery replacement MAZDA MODEL CX-3 2021 Owners Manual

Keyless Entry System
This system uses the key buttons to
remotely lock and unlock the doors and
the liftgate.
The system can start the engine without
having to take the key out of your purse or
pocket.
It can also help you signal for attention or
help.
Operating the theft-deterrent system is
also possible on theft-deterrent
system-equipped vehicles.

System malfunctions or warnings are
indicated by the following warning lights
or beeps.
KEY Warning Light (Red)
Refer to Contact Authorized Mazda
Dealer and Have Vehicle Inspected on
page 7-29.
Refer to Taking Action on page 7-33.
Ignition Not Switched Off (STOP)
Warning Beep
Refer to Ignition Not Switched Off
(STOP) Warning Beep on page 7-43.
Key Removed from Vehicle Warning
Beep
Refer to Key Removed from Vehicle
Warning Beep on page 7-43.
If you have a problem with the key,
consult an Authorized Mazda Dealer.

If your key is lost or stolen, consult an
Authorized Mazda Dealer as soon as
possible for a replacement and to make the
lost or stolen key 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.
NOTE
The keyless entry system operation may
vary due to local conditions.
The keyless entry system is fully
operational (door/liftgate 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
6-34).
Battery life is about 1 year. Replace the
battery with a new one if the KEY
indicator light (green) flashes 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.
Before Driving
Keys
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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 3-4.
▼Locking, Unlocking the Doors and
the Liftgate
Exterior antenna
Operational range80 cm (31in)
80 cm (31in)Lock
Exterior antenna
Operational range80 cm (31in)
80 cm (31in)Unlock
NOTE
The system may not operate if you are
too close to the windows or door
handles, or liftgate.
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 th
e key is left in the
vehicle.
Around the dashboard
In the storage compartments such as
the glove compartment or the center
console
Next to a communication device such
as a mobile phone
▼ Opening the Liftgate
Exterior antenna
80 cm(31in)
Operational range
Before Driving
Advanced Keyless Entry System
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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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Do not use the front bumper to push other vehi cles or obstructions such as when pulling
out of a parking space. Otherwise, the radar sensor (front) could be hit and its position
deviated.
 Do not remove, disassemble, or modify the radar sensor (front).
 For repairs, replacement or paint work around the radar sensor (front), consult an
Authorized Mazda Dealer.
 Do not modify the suspension. If the suspensi on are modified, the vehicle's posture could
change and the radar sensor (front) may not be able to correctly detect a vehicle ahead or
an obstruction.
NOTE
Under the following conditions, the radar sensor (front) may not be able to detect vehicles
ahead or obstructions correctly and each system may not operate normally.
The rear surface of a vehicle ahead does not reflect radio waves effectively, such as an
unloaded trailer or an automobile with a loading platform covered by a soft top,
vehicles with a hard plastic tailgate, and round-shaped vehicles.
Vehicles ahead with low vehicle height and thus less area for reflecting radio waves.
Visibility is reduced due to a vehicle ahead ca sting off water, snow, or sand from its tires
and onto your windshield.
The luggage compartment is loaded with heavy objects or the rear passenger seats are
occupied.
Ice, snow, or soiling is on the front surface of the front emblem.
During inclement weather such as rain, snow, or sand storms.
When driving near facilities or objects emitting strong radio waves.
Under the following conditions, the radar sensor (front) may not be able to detect vehicles
ahead or obstructions.
The beginning and end of a curve.
Roads with continuous curves.
Narrow lane roads due to road construction or lane closures.
The vehicle ahead enters the radar sensor's blind spot.
The vehicle ahead is running abnormally due to accident or vehicle damage.
Roads with repeated up and down slopes
Driving on poor roads or unpaved roads.
The distance between your vehicle and the vehicle ahead is extremely short.
A vehicle suddenly comes close such as by cutting into the lane.
To prevent incorrect operation of the system, use tires of the same specified size,
manufacturer, brand, and tread pattern on all four wheels. In addition, do not use tires
with significantly different wear patterns or tire pressures on the same vehicle (Including
the temporary spare tire).
If the battery power is weak, the system may not operate correctly.
When Driving
i-ACTIVSENSE
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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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Specifications
▼Engine
Item
Specification
Type DOHC-16V in-line, 4-cylinder
Bore × Stroke 83.5 × 91.2 mm (3.29 × 3.59 in)
Displacement 1,997.6 ml (1,997.6 cc)
Compression ratio 13.0
▼Electrical System
Item
Specification
Battery
*1Canada 12V-65Ah/20HR
Except Canada 12V-60Ah/20HR or 12V-65Ah/20HR
Spark-plug number Mazda Genuine spark
plug
*2PE5R-18-110 or PE5S-18-110
*1 Check the battery installed on the vehicle and use a battery
with an equal or higher performance. However, the
performance of the battery may vary even among the sa me battery types, consult an Authorized Mazda Dealer
for replacement.
*2 The spark plugs provide the SKYACTIV-G its optimum performance. Consult an Authorized Mazda Dealer
for details.

CAUTION
When cleaning the iridium plugs, do not use a wire brush. The fine particulate coating on the
iridium alloy and platinum tips could be damaged.
▼ Lubricant Quality
Lubricant
Classification
Engine oil Refer to Recommended Oil on page 6-22.
Coolant FL-22 type
Manual transaxle oil Mazda Long Life Gear Oil G7
*1
Automatic transaxle fluid Mazda Genuine ATF-FZ
Transfer case oil Mazda Long Life Hypoid Gear Oil SG1
Rear differential oil Mazda Long Life Hypoid Gear Oil SG1
Brake fluid/Clutch fluid SAE J1703 or FMVSS116 DOT-3
*1 Mazda Long Life Gear Oil G7 is superior oil for low fuel cost and optimum shift-feel. Using Mazda Long Life
Gear Oil G7 is recommended.
If Mazda Long Life Gear Oil G7 cannot be obtained, use standard oil (API Service GL-4 (SAE 75W-80)).
Specifications
Specifications
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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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Index
Key battery replacement..............6-34
Opening the Hood....................... 6-19
Owner Maintenance
Precautions...................................6-17
P
Parking Brake....................................4-55
Personalization Features..................... 9-9
Power Steering.................................. 4-74
Power steering warning buzzer......... 7-44
Power Windows............. ................... 3-30
R
Radar Sensors (Rear)...................... 4-134
Radar Sensor (Front).......................4-131
Rearview Mirror........ ........................3-29
Rear Coat Hooks............................. 5-150
Rear Cross Traffic Alert (RCTA).... 4-101
Rear Door Child Safe ty Locks.......... 3-19
Rear Seat........................................... 2-14
Rear View Monitor......................... 4-144 Displayable range on the
screen......................................... 4-146
Picture quality adju stment......... 4-150
Rear view monitor operation..... 4-147
Rear view parking camera
location...................................... 4-145
Switching to the rear view monitor
display........................................4-145
Variance between actual road
conditions and displayed
Image......................................... 4-149
Viewing the display................... 4-147
Rear Window Defogger .................... 4-52
Rear Window Washer....................... 4-51
Rear Window Wiper.... ..................... 4-51
Recommended Oil.............................6-22
Recording of Vehicle Data................ 8-22
Recreational Towing......................... 3-47
Registering Your Vehicle in A Foreign
Country.............................................. 8-18
Replacement Fuse..............................................6-47
Key battery.................................. 6-34
Light Bulbs.................................. 6-40
Tires............................................. 6-38
Wheel........................................... 6-39
Wiper........................................... 6-29
Request switch inoperable warning beep
(With the advanced keyless
function)............................................ 7-44
Rocking the Vehicle.......................... 3-42
S
Safety Defects, Reporting................. 8-14
Saving Fuel and Protection of the
Environment...................................... 3-40
Scheduled Maintenance...................... 6-4
Seats.................................................... 2-5
Driver's seat................................... 2-5
Driving position memory............ 2-10
Front passenger's seat.................. 2-13
Front seat....................................... 2-5
Head restraint.............................. 2-17
Rear seat...................................... 2-14
Seat warmer................................. 2-19
Seat Belt System Automatic locking....................... 2-23
Emergency locking...................... 2-23
Extender....................................... 2-28
Pregnant women.......................... 2-22
Seat belt precautions................... 2-21
Seat belt warning beep...................... 7-42
Security System Immobilizer system..................... 3-36
Theft-deterrent system................. 3-38
Smart Brake Support (SBS)............ 4-123 Collision warning...................... 4-125
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