2021 MAZDA MODEL 3 HATCHBACK key battery

Key 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:
A message, “Low Key Fob Battery.
Replace Battery” is displayed on the
multi-information display when the
ignition is switched OFF.
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.
Incorrect battery replacement
operation may damage the key.
Replacing the battery at an Authorized
Mazda Dealer is recommended. 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.
Maintenance and Care
Owner Maintenance
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“Key Not Detected” is displayed
If the presence of the key cannot be
detected (dead battery, battery
malfunction, no key), it is displayed
when the driver attempts to start the
engine (push button start operation,
brake pedal depression).
Displayed when it is determined that
a key that was in the vehicle has
been removed from the vehicle. (Key
taken out warning. Other thanIG -OFF).
▼ Security Indicator Light
If the security indicator light
flashes
continuously while you are driving , do
not shut o ff the engine. Go to an
Authorized Mazda Dealer and have it
checked. If the engine is shut o ff while
the indicator light is flashing, you will
not be able to restart it.
Make sure the key is within the
operational range for signal
transmission. Switch the ignition o ff,
and then restart the engine. If the
engine does not start after 3 or more
tries, contact an Authorized Mazda
Dealer.
NOTE
Because the electronic codes are reset
when the immobilizer system is
repaired, the keys are needed. Make
sure to bring all the keys to an
Authorized Mazda Dealer so that they
can be programmed.
▼ High Beam Control System (HBC)
Warning Indication/Warning Light
(Amber)
*
The light remains turned on if there is a
problem with the system. Have your
vehicle inspected at an Authorized
Mazda Dealer.
▼i-ACTIVSENSE Warning
Indication/Warning Light*
The indication displays if the system
has a malfunction.
Check the reason for the indication
displaying on the center display or
multi-information display.
Refer to If a Warning Light Turns On or
Flashes on page 7-27.
▼Exterior Light Warning Indication/
Warning Light
This light illuminates if there is a
malfunction in the exterior lights
(except license plate lights). Have your
vehicle inspected by an Authorized
Mazda Dealer.
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
7-34*Some models.
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CAUTION
Adjust the tire pressures while the
tires are cool. Because the air
pressure in the tires fluctuates
depending on the temperature,
before adjusting the tire pressures,
let the vehicle sit for an hour or drive
it only within a 1.6 km (1 mile)
distance. If the tire pressures are
adjusted while the tires are warm,
the tire pressures may decrease
below the specified air pressure after
cooling down which could turn on
the warning light. In addition,
because the air pressure in the tires
decreases when the ambient
temperature is low, if the ambient
temperature increases, an
illuminated TPMS warning light may
turn o ff. Under any circumstances,
always adjust the tire pressures while
the tires are cool.
 After adjusting the tire pressures, the
TPMS warning light turns o ff. If the
TPMS warning light does not turn off,
drive the vehicle at a speed of about
25 km (16 mph) or faster for 3
minutes or longer and make sure the
warning light turns off.
If the TPMS warning light remains on
even after adjusting the tire pressures,
one of the tires may have a puncture.
▼ KEY Indicator Light (Green)
(Flashing)
“Low Key Fob Battery. Replace
Battery” is displayed/When the light
is
flashing
When the key battery is low, the
indication is displayed when the
ignition is switched OFF.
Action to be taken
Replace the key battery.
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
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Display*1*2ContentAction to be taken
Mazda Radar Cruise
Control Canceled. Drive
Safely This message is indicated when the
Mazda Radar Cruise Control
(MRCC), Mazda Radar Cruise Con-
trol with Stop & Go function (MRCC
with Stop & Go function), and the
Tra
ffic Jam Assist (TJA) have been can-
celed other than by the driver. Have your vehicle inspected by an
Authorized Mazda Dealer.
Distance & Speed Alert
Operation Canceled
Drive Safely This message is indicated when the
Distance & Speed Alert (DSA) have
been canceled other than by the driv-
er.
Have your vehicle inspected by an
Authorized Mazda Dealer.
Cruise Control Opera-
tion Canceled. Drive
Safely This message is indicated when the
Cruise Control have been canceled
other than by the driver.
Have your vehicle inspected by an
Authorized Mazda Dealer.
Emergency Braking Acti-
vated. Depress Brake
Pedal to Hold Stop This message is indicated after the
Smart Brake Support (SBS) brakes op-
erate and when the Smart Brake Sup-
port (SBS) is canceled.
Depress the brake pedal.
Touch Key Fob to Push
Button Start Switch This message is indicated when the
key battery is weak (battery dead or
damaged key). Touch the key against push button
start to start the engine.
Refer to Engine Start Function When
Key Battery is Dead on page 4-8.
Depress Brake Pedal to
Start Vehicle This message is indicated when the
push button start is pressed without
depressing the brake pedal. When starting the engine, press the
push button start with the brake ped-
al depressed.
Depress Clutch Pedal to
Start Vehicle This message is indicated when the
push button start is pressed without
depressing the clutch pedal. When starting the engine, press the
push button start with the clutch
pedal depressed.
Check Gear Selector
Lever Position This message is indicated when the
selector lever is shifted to the P or R
position while driving.
Check the selector lever position.
Close Door and Fasten
Seat Belt This message is indicated when AU
-
TOHOLD is about to operate and a
door is opened or a seat belt is unfas-
tened. When the AUTOHOLD is turned on,
close the doors and fasten seat belts.
Wiper Blades Must Be
on Windshield Before
Operating This message is indicated when the
ignition is switched ON with the wip-
er arms at the service positions.
Return the wiper arms to the initial
positions.
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
7-40
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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
continues 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.
Rear seat
The warning beep only sounds if a seat
belt is unfastened after being fastened.
▼ Ignition Not Switched O
ff (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 switched to ACC
or ON, and all the doors are closed, a
sound is activated 6 times outside of
the vehicle and a sound is activated 1
time in the vehicle.
Vehicles without advanced keyless
function
If the key is taken out of the vehicle
while the ignition is switched to ACC
or ON, and all the doors are closed, a
sound is activated 1 time in the
vehicle.
NOTE
Make sure that you leave the vehicle
while carrying the key, or switch the
ignition OFF.
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
7-43
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Index
A
Accessory Socket....................... 5-41
Active Driving Display................4-30
Adaptive Front Lighting System
(AFS)........................................ 4-90
Add-On Non-Genuine Parts and
Accessories............................... 8-17
Advanced KeyAdvanced keyless entry
system................................... 3-9
Operational range................ 3-10
Advanced Keyless Entry System..... 3-9
Antilock Brake System (ABS).......4-77
Assist Grips............................... 5-44
AUTOHOLD.............................. 4-71
AUTOHOLD Warning Beep........ 7-45
Automatic Transmission Active Adaptive Shift (AAS)... 4-38
Automatic transmission
controls................................4-35
Direct mode.........................4-44
Driving tips.......................... 4-45
Manual shift mode............... 4-38
Shift-lock system...................4-36
Transmission ranges.............. 4-37
B
Battery...................................... 6-29Maintenance........................ 6-30
Replacement........................ 6-30
Speci fications......................... 9-4
Battery Runs Out....................... 7-17
Jump-starting....................... 7-17
Blind Spot Monitoring (BSM)..... 4-96 Canceling operation of Blind Spot
Monitoring (BSM)...............4-100
Blind Spot Monitoring (BSM) Warning
Beep.........................................7-46
Body Lubrication....................... 6-23
Bottle Holder............................ 5-44
Brakes Brake assist.......................... 4-69
Brake override system........... 4-70
Electric Parking Brake (EPB)....4-66
Foot brake............................4-65
Pad wear indicator................4-69
Parking brake....................... 4-66
Warning light........................4-69
Brake Override System............... 4-70
Brake Override Warning Beep.....7-45
Break-In Period......................... 3-44
C
Capacities...................................9-5
Cell Phones.............................. 8-18
Center Console......................... 5-46
Child Restraint Categories of child-restraint
systems................................ 2-37
Child-restraint precautions.... 2-32
Child-restraint system
installation........................... 2-37
Child-restraint system suitability
for various seat positions
table.................................... 2-39
Installing child-restraint
systems................................ 2-42
ISOFIX child-restraint systems
(Mexico).............................. 2-50
LATCH child-restraint systems
(Except Mexico)................... 2-50
Climate Control System Fully automatic type..............5-10
Manual type...........................5-5
Operating tips........................ 5-2
Vent operation....................... 5-3
Collision warning...................... 7-47
Coming Home Light.................. 4-50
Cruise Control........................ 4-215
10-2
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Index
Display indication............... 4-131
Setting the system...............4-133
Stop hold control............... 4-138
Mazda Radar Cruise Control with
Stop & Go function (MRCC with Stop
& Go function) System
Warnings.................................. 7-46
Mazda Radar Cruise Control
(MRCC).................................. 4-120 Close proximity warning...... 4-123
Display indication............... 4-122
Setting the system...............4-124
Shift-up/shift-down request
display............................... 4-128
Mazda Radar Cruise Control (MRCC)
System Warnings....................... 7-46
Message Indicated on Multi-
information Display................... 7-39
Meters...................................... 4-12
Mirrors Outside mirrors.................... 3-30
Rearview mirror.................... 3-32
Mirror Defogger........................ 4-59
Moonroof................................. 3-37
Multi-information Display.......... 4-14
O
Outside Mirrors.........................3-30
Overhead Console.................... 5-46
Overhead Lights........................ 5-39
Overheating.............................. 7-21
Overloading.............................. 3-49
Owner Maintenance Closing the hood..................6-14
Engine compartment
overview.............................. 6-15
Key battery replacement........6-31
Opening the hood................ 6-13
Owner maintenance
precautions.......................... 6-12
P
Parking Brake............................ 4-66
Parking Sensor System............. 4-238Parking Sensor OFF Switch... 4-242
Sensor detection range........4-240
Power Steering.......................... 4-84
Power Windows........................ 3-34
R
Rearview Mirror........................ 3-32
Rear Coat Hooks....................... 5-45
Rear Cross Tra ffic Alert (RCTA) ...........
.............................................. 4-116
Rear Cross Traffic Alert (RCTA)
Warning Beep........................... 7-46
Rear Door Child Safety Locks..... 3-19
Rear Side Radar Sensor............ 4-211
Rear View Monitor.................. 4-223 Displayable range on the
screen................................ 4-225
Rear view monitor
operation........................... 4-228
Rear view parking camera
location............................. 4-224
Switching to the rear view monitor
display............................... 4-225
Variance between actual road
conditions and displayed
image................................ 4-235
Viewing the display.............4-226
Rear Window Defogger............. 4-58
Rear Window Washer................ 4-57
Rear Window Wiper.................. 4-57
Recommended Oil.................... 6-17
Recording of Vehicle Data..........8-20
Recreational Towing.................. 3-51
Registering Your Vehicle in A Foreign
Country.................................... 8-16
Replacement
10-7
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Index
Fuse..................................... 6-40
Key battery........................... 6-31
Light bulbs........................... 6-37
Tires.....................................6-35
Wheel.................................. 6-37
Wiper.................................. 6-23
Rocking the Vehicle................... 3-46
S
Safety Defects, Reporting
(Canada).................................. 8-14
Safety Defects, Reporting
(U.S.A.).................................... 8-12
Saving Fuel and Protection of the
Environment............................. 3-44
Scheduled Maintenance Canada.................................. 6-6
Mexico.................................. 6-9
U.S.A. and Puerto Rico........... 6-4
Seats Driver's seat........................... 2-5
Front passenger's seat........... 2-13
Front seat............................... 2-5
Head restraint...................... 2-17
Rear seat.............................. 2-14
Seat warmer......................... 2-20
Seat Belt System Automatic locking................ 2-25
Emergency locking................ 2-25
Extender.............................. 2-30
Pregnant women.................. 2-25
Seat belt precautions............ 2-23
Seat Belt Warning Beep............. 7-42
Security System Immobilizer system............... 3-40
Theft-deterrent system.......... 3-42
Shift Position Warning Beep....... 7-45
Smart Brake Support (SBS)....... 4-158 Collision warning................ 4-159
Stopping the Smart Brake Support
(SBS) system operation........4-160
Smart Brake Support [Rear Crossing]
(SBS- RC).................................4-164
Collision warning................ 4-167
Stopping the Smart Brake Support
[Rear Crossing] (SBS-RC) system
operation........................... 4-168
Smart Brake Support [Rear] (SBS -
R) ........................................... 4-160
Collision warning................ 4-163
Stopping the Smart Brake Support
[Rear] (SBS-R) system
operation........................... 4-163
Spare Tire................................... 7-5
Spare Tire and Tool Storage.......... 7-3
Speci fications
Capacities.............................. 9-5
Dimensions............................ 9-6
Electrical system..................... 9-4
Engine................................... 9-4
Light bulbs............................. 9-9
Lubricant quality..................... 9-5
Tires.....................................9-10
Weights................................. 9-7
SRS Air Bags Driver and front passenger
occupant classification
system................................. 2-70
How the SRS air bags work.... 2-63
Limitations to SRS air bag...... 2-69
Monitoring........................... 2-75
SRS air bag deployment
criteria................................. 2-67
Supplemental restraint system
components......................... 2-61
Supplemental restraint system
(SRS) precautions................. 2-55
Starting the Engine...................... 4-5
Steering Wheel Heated steering wheel.......... 2-21
10-8
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