2020 MAZDA MODEL 3 HATCHBACK key battery

▼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 a
battery replacement purchase.
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).
Maintenance and Care
Owner Maintenance
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The following conditions indicate that the
battery power is low:
The KEY warning indication/warning
light (red) in the instrument cluster turns
on and 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.
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 s crewdriver in the
direction of the arrow and remove the
upper cover.
Maintenance and Care
Owner Maintenance
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WA R N I N G
Never tamper with the air bag/
pretensioner systems and always have an
Authorized Mazda Dealer perform all
servicing and repairs:
Self-servicing or tampering with the
systems is dangerous. An air bag/
pretensioner could accidentally activate or
become disabled causing serious injury or
death.
▼Tire Pressure Monitoring System
(TPMS) Warning Indication/
Warning Light (Flashing)
If there is a problem with the TPMS or the
voltage of a tire pressu
re sensor decreases,
the TPMS warning light flashes and a
message is displayed on the
multi-information display. Have your
vehicle inspected by an Authorized Mazda
Dealer.
WA R N I N G
Do not drive the vehicle at high speeds if
the TPMS warning light turns on or flashes:
Driving the vehicle at high speeds while the
TPMS warning light is turned on or flashing
is dangerous because the brake
performance and the steering wheel
operability will be reduced. If the vehicle is
driven at high speeds or the brakes are
suddenly applied, it could lead to an
accident. Gradually apply the brakes to
lower the vehicle's speed.
Do not ignore the TPMS warning light
when it is turned on or flashing:
Continuing to drive the vehicle while
ignoring the illumination/flashing of the
TPMS warning light is dangerous because a
tire may burst which could lead to an
accident. Take appropriate measures as
soon as possible.
▼ KEY Warning Indication/Warning
Light (Red)
“Keyless Entry System Malfunction.
Have the Vehicle Ins
pected” is displayed
This message is displayed if the advanced
keyless entry & push button start system
has a problem.
Contact an Authorized Mazda Dealer.
CAUTION
If the message is indicated, or the push
button start indicator light (amber)
flashes,
the engine may not start. If the engine
cannot be started, try starting it using the
emergency operation for starting the
engine, and have the vehicle inspected at
an Authorized Mazda Dealer as soon as
possible.
Refer to Emergency Operation for Starting
the Engine on page 4-9.
“Low Key Fob Battery. Replace
Battery” is displayed
When the key battery is low, the indication
is displayed when the ignition is switched
OFF.
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
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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 than IG-OFF)
▼ 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 Warnin g Light Turns On or
Flashes on page 7-27.
▼ Exterior Light Warning Indication/
Wa r n i n g L i g h t
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.
CAUTION
Do not drive the vehicle while an exterior
light has a malfunction. Poor visibility, and
not being able to signal braking and turns
may cause an accident. In addition, if the
vehicle is driven with the lights not turned
on, it may
conflict with laws and
regulations due to poor maintenance.
▼ Low Fuel Warning Indication/
Wa r n i n g L i g h t
The light turns on when the remaining fuel
is about 9.0 L (2.3 US gal, 1.9 Imp gal). If
you continue to drive after the light turns
on without refueling and the fuel gauge
reaches nearly empty
, the light flashes.
NOTE
The light illumination timing may vary
because fuel inside the fuel tank moves
around according to the driving conditions
and the vehicle posture.
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
7-34*Some models.
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Display*1*2ContentAction to be taken
Distance & Speed Alert
Operation Canceled Drive
Safely This message is indicated when the Dis‐
tance & Speed Alert (DSA) have been
canceled other than by the driver.
Have your vehicle inspected by an Au‐
thorized Mazda Dealer.
Cruise Control Operation
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 Au‐
thorized Mazda Dealer.
Emergency Braking Acti‐
vated. Depress Brake Ped‐
al to Hold Stop This message is indicated after the Smart
Brake Support (SBS) brakes operate and
when the Smart Brake Support (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 Engine This message is indicated when the push
button start is presse
d without depressing
the brake pedal. Depress the brake pedal and press the
push button start.
Depress Clutch Pedal to
Start Engine This message is indicated when the push
button start is presse
d without depressing
the clutch pedal. Depress the clutch pedal and press the
push button start.
Check Gear Selector Lever
Position This message is indicated when the se‐
lector lever is shifted to the P or R posi‐
tion while driving.
Check the selector lever position.
Close Door and Fasten
Seat Belt This message is indicated when AUTO‐
HOLD is about to operate and a door is
opened or a seat belt is unfastened. When the AUTOHOLD is turned on,
close the doors and fasten seat belts.
Wiper Blades Must Be on
Windshield Before Operat‐
ing This message is indicated when the
windshield wipers are operated with the
wipers raised off the windshield.
Lower the windshield wipers.
Windshield Wiper Range
of Motion Reduced. Re‐
move Obstruction(s) This message is indicated when there is
snow or dirt accumulation on the wind‐
shield and the wiper operation range is
narrowed.
Remove foreign matter from the wind‐
shield.
Ignition Not Switched Off This message is indicated when the driv‐
er’s door is opened without switching the
ignition OFF. Switch the ignition OFF before leaving
the vehicle.
Gear Selector Lever Not in
Park This message is indicated when a door is
opened with the selector lever in a posi‐
tion other than the P position. Shift the selector lever to the P position
before leaving the vehicle.
Excessive Transmission
Temperature. Drive Slowly This message is indicated when the inter‐
nal temperature of the automatic trans‐
mission is high. Drive slowly to redu
ce load on the auto‐
matic transmission.
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 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 Off (STOP)
Warning Beep
If the driver's door i
s 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 volta ge will be depleted.
▼Key Removed from Vehicle Warning
Beep
Vehicles with advance
d 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, and after that, the beep which
sounds inside the vehicle will be heard 1
times.
Vehicles without advanced keyless
function
If the key is tak en 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 1 times.
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
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Index
A
Accessory Socket.............................. 5-37
Active Driving Display..................... 4-29
Adaptive Front Lighting System
(AFS)................................................. 4-88
Add-On Non-Genuine Parts and
Accessories........................................ 8-17
Advanced Key
Advanced keyless entry system..... 3-9
Operational range........................ 3-10
Advanced Keyless Entry System........ 3-9
Air Bag/Front Seat Belt Pretensioner
System Warning Beep....................... 7-41
Antilock Brake System (ABS).......... 4-75
Assist Grips....................................... 5-40
AUTOHOLD..................................... 4-69
AUTOHOLD Warning Beep.............7-44
Automatic Transmission
Active Adaptive Shift (AAS)...... 4-36
Automatic transmission
controls........................................ 4-33
Direct mode................................. 4-42
Driving tips..................................4-43
Manual shift mode.......................4-36
Shift-lock system......................... 4-34
Transmission ranges.................... 4-35
B
Battery............................................... 6-26Maintenance.................................6-28
Replacement................................ 6-28
Specifications.................................9-4
Battery Runs Out.............................. 7-17 Jump-starting............................... 7-17
Blind Spot Monitoring (BSM).......... 4-94 Canceling operation of Blind Spot
Monitoring (BSM).......................4-98
Blind Spot Monitoring (BSM) Warning
Beep...................................................7-44
Body Lubrication.............................. 6-20
Bottle Holder..................................... 5-40
Brakes Brake assist.................................. 4-67
Brake override system................. 4-67
Electric Parking Brake (EPB)......4-64
Foot brake....................................4-63
Pad wear indicator....................... 4-67
Parking brake...............................4-64
Warning light............................... 4-67
Brake Override System..................... 4-67
Brake Override Warning Beep.......... 7-43
Break-In Period................................. 3-44
C
Capacities............................................ 9-5
Cell Phones....................................... 8-18
Center Console.................................. 5-42
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......................5-9
Gas specifications.......................... 9-8
Manual type................................... 5-5
Operating tips................................ 5-2
Vent operation................................5-3
Collision warning.............................. 7-45
Coming Home Light......................... 4-48
10-2
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Index
MirrorsOutside mirrors..... ....................... 3-30
Rearview mirror.......................... 3-32
Mirror Defogger......... ....................... 4-57
Moonroof...........................................3-37
Multi-information Display................ 4-14
O
Outside Mirrors......... ........................ 3-30
Overhead Console............................. 5-42
Overhead Lights................................ 5-35
Overheating....................................... 7-21
Overloading....................................... 3-49
Owner Maintenance Closing the hood...... ................... 6-13
Engine compartment overview.... 6-14
Key battery replacemen t..............6-28
Opening the hood........................ 6-12
Owner maintenance
precautions................................... 6-11
P
Parking Brake....................................4-64
Parking Sensor System................... 4-235 Park assist sensor system
operation.................................... 4-239
Sensor detection range.............. 4-237
Power Steering.................................. 4-82
Power Windows............. ................... 3-34
R
Rearview Mirror........ ........................3-32
Rear Coat Hooks....... ........................ 5-41
Rear Cross Traffic Alert (RCTA).... 4-114
Rear Cross Traffic Alert (RCTA)
Warning Beep.................................... 7-44
Rear Door Child Safet y Locks.......... 3-18
Rear Side Radar Sensor.................. 4-208
Rear View Monitor......................... 4-220
Displayable range on the
screen......................................... 4-222
Rear view monitor operation..... 4-225
Rear view parking camera
location...................................... 4-221
Switching to the rear view monitor
display........................................4-221
Variance between actual road
conditions and displayed
image......................................... 4-232
Viewing the display................... 4-223
Rear Window Defogger. ................... 4-56
Rear Window Washer....................... 4-55
Rear Window Wiper.... ..................... 4-55
Recommended Oil.............................6-15
Recording of Vehicle Data................ 8-20
Recreational Towing......................... 3-51
Registering Your Vehicle in A Foreign
Country.............................................. 8-16
Replacement Fuse..............................................6-38
Key battery.................................. 6-28
Light bulbs...................................6-35
Tires............................................. 6-33
Wheel........................................... 6-34
Wiper........................................... 6-21
Rocking the Vehicle.......................... 3-46
S
Safety Defects, Reporting
(Canada)............................................ 8-14
Safety Defects, Repor ting (U.S.A.)... 8-12
Saving Fuel and Protection of the
Environment...................................... 3-44
Scheduled Maintenance Canada........................................... 6-6
Mexico........................................... 6-8
U.S.A. and Puerto Rico................. 6-4
Seats Driver's seat................................... 2-5
10-7
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