2018 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 six
weeks.
▼ Battery Replacement
Contact an Authorized Mazda Dealer for a
battery replacement purchase.
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 b
attery 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
(CR2025 or equivalent).
Maintenance and Care
Owner Maintenance
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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 turned 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. Press the knob and pull out the auxiliary key.
Knob
2. Twist a tape-wrapped flatheadscrewdriver in the direction of the
arrow and open the cover slightly.
Cover
3. Insert the tape-wrapped flatheadscrewdriver into the gap and slide it in
the direction of the arrow.
Cover
Gap
4. Twist the flathead screwdriver in the
direction of the arrow and remove the
cover.
Cover
Maintenance and Care
Owner Maintenance
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5. Remove the battery cap, then removethe battery.
CAUTION
Be careful not to allow the rubber
ring shown in the figure to be
scratched or damaged.
 If the rubber ring detaches, reattach
it before inserting a new battery.
Rubber ring
6. Insert a new battery with the positive
pole facing up, and then cover the
battery with the battery cap.
7. Close the cover.
8. Reinsert the auxiliary key.
Maintenance and Care
Owner Maintenance
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SignalWarning Action to be taken
Low Washer
Fluid Level Wa r n i n g
Light
*
This warning light indicates that little washer
fluid remains. Add washer fluid (page 6-27).
Door-Ajar
Wa r n i n g Light The light turns on if a
ny door/liftgate is not
closed securely. Close the door/liftgate securely.

KEY Warning Light
Take the appropriate action and verify that the warning light t
urns off.
SignalCause Action to be taken
(Red)
(Flashing) The key battery is dead. Replace the key battery (page 6-35).
The key is not within the operation range.
Bring the key into the operation range
(page 3-7).
The key is placed in areas inside the cabin
where it is difficult for the key to be detect-
ed.
A key from another manufacturer similar to
the key is in the operation range. Take the key from another manufacturer
similar to the key out of the operation
range.
Without the ignition switched off, the key is
taken out of the cabin, and then all the
doors are closed. Bring the key back into the cabin.
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
*Some models.7-35
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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 seat. The sensor may not
function properly because the additional
seat cushion could cause sensor
interference.
When a small child sits on the front
passenger seat, it is possible that the
warning beep will 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 advanc
ed 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, and the
KEY warning light (red) in the instrument
cluster flashes continuously to notify the
driver that the ignition has not been
switched OFF.
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 and the KEY warning
light (red) in the ins trument cluster turns
on continuously to notify the driver that
the ignition has not been switched OFF.
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.
▼Request Switch Inoperable Warning
Beep (With the advanced keyless
function)
If the request switch is pressed with the
door open or ajar, or the ignition is not
switched OFF with a key being carried, a
beep will be heard outside for about 2
seconds to notify the driver that the door
or liftgate/trunk lid cannot be locked.
If Trouble Arises
Warning/Indicator Lights and Warning Sounds
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Index
A
Accessory Socket............................ 5-132
Active Driving Display..................... 4-20
Adaptive Front Lighting System
(AFS)................................................. 4-80
Add-On Non-Genuine Parts and
Accessories........................................ 8-19
Advanced Key
Advanced keyless entry system..... 3-9
Operational range........................ 3-10
Advanced Key removed from vehicle
warning beep..................................... 7-39
Air Bag Systems............................... 2-44
Air Bag/Front Seat Belt Pretensioner
System Warning Beep....................... 7-38
Ambient Temperature Display.......... 4-17
Antilock Brake System (ABS).......... 4-66
Audio Control Switch
Adjusting the Volume.................. 5-53
Mute switch................................. 5-54
Seek Switch................................. 5-53
Audio System.................................... 5-16 Antenna........................................5-16
Audio Control Switch................. 5-53
Audio set [Type A (non-
touchscreen)]............................... 5-26
Audio set [Type B
(touchscreen)].............................. 5-32
AUX/USB mode..........................5-54
Operating Tips for Audio
System......................................... 5-17
Satellite Radio........ ..................... 5-44
Automatic Transaxle......................... 4-32 Active Adaptive Shift (AAS)...... 4-34
Automatic transaxle controls....... 4-32
Direct mode................................. 4-41
Driving tips..................................4-42
Manual shift mode.......................4-35
Shift-lock system......................... 4-33
Transaxle ranges.......................... 4-33
B
Battery............................................... 6-33
Maintenance.................................6-35
Replacement................................ 6-35
Specifications.................................9-4
Battery runs out.................................7-16 Jump-Starting...............................7-16
Blind Spot Monitoring (BSM).......... 4-84
Canceling operation of Blind Spot
Monitoring (BSM).......................4-89
Blind Spot Monitoring (BSM) Warning
Beep...................................................7-41
Bluetooth®........................................ 5-69 Bluetooth® audio (Type A)....... 5-111
Bluetooth® audio (Type B)....... 5-114
Bluetooth® Hands-Free (Type
A)................................................. 5-94
Bluetooth® Hands-Free (Type
B)............................................... 5-101
Troubleshooting........... .............. 5-125
Body Lubrication.............................. 6-28
Bottle Holder................................... 5-135
Brakes Brakes assist................................ 4-64
Electric parking brake (EPB)...... 4-61
Foot brake....................................4-60
Pad wear indicator....................... 4-63
Parking brake...............................4-61
Warning light............................... 4-63
Break-In Period................................. 3-45
C
Capacities............................................ 9-5
Carbon Monoxide......... .................... 3-27
Cell Phones....................................... 8-20
Center Console................................ 5-136
Child Restraint Categories of child-restraint
systems.........................................2-25
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Index
When liftgate/trunk lid cannot be
opened..........................................7-43
Lighting Control................................4-43
Lights-on reminder............................7-38
Light Bulbs Replacement................................ 6-42
Specifications.................................9-9
Lubricant Quality................................ 9-4
Luggage Compartment.. ..................5-138
Luggage Compartment Light.......... 5-130
M
Maintenance
Information.................................... 6-2
Scheduled.......................................6-4
Maintenance Monitor........................ 6-16
Manual Transaxle Operation............. 4-29
Map Lights...................................... 5-130
Mazda Radar Cruise Control
(MRCC)...........................................4-102 Close proximity warning........... 4-104
Cruise control function.............. 4-110
Display indication......................4-104
Setting the system..................... 4-104
Shift-up/shift-down request
display........................................ 4-110
Mazda Radar Cruise Control (MRCC)
System warnings............................... 7-41
Meters and Gauges............................4-12
Mirrors Outside mirrors............................ 3-32
Rearview mirror.......................... 3-33
Mirror Defogger.......... ...................... 4-54
Moonroof...........................................3-38
O
Odometer and Trip Meter................. 4-13
Outside Mirrors................................. 3-32
Outside Temperature Display............4-17
Overhead Console........................... 5-136
Overhead Lights......... ..................... 5-130
Overheating....................................... 7-20
Overloading....................................... 3-50
Over Rev. buzzer...............................7-41
Owner Maintenance Closing the Hood.........................6-21
Engine Compartment
Overview..................................... 6-22
Key battery replacement..............6-35
Opening the Hood....................... 6-20
Owner Maintenance
Precautions...................................6-18
P
Parking Brake....................................4-61
Personalization Features................... 9-12
Power Steering.................................. 4-76
Power steering warning buzzer......... 7-41
Power Windows................................ 3-35
R
Radar Sensors (Rear)...................... 4-139
Radar Sensor (Front).......................4-136
Rearview Mirror................................3-33
Rear Coat Hooks......... .................... 5-138
Rear Cross Traffic Alert (RCTA)...... 4-98
Rear Door Child Safet y Locks.......... 3-19
Rear Seat............................................. 2-7
Rear View Monitor......................... 4-150
Displayable range on the
screen......................................... 4-152
Picture quality adjustment......... 4-158
Rear view monitor operation..... 4-154
Rear view parking camera
location...................................... 4-151
Switching to the rear view monitor
display........................................4-151
Variance between actual road
conditions and displayed
Image......................................... 4-156
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Index
Viewing the display................... 4-153
Rear Window Defogger. ................... 4-53
Rear Window Washer....................... 4-53
Rear Window Wiper.... ..................... 4-53
Recommended Oil.............................6-23
Recording of Vehicle Data................ 8-22
Recreational Towing......................... 3-52
Registering Your Vehicle in A Foreign
Country.............................................. 8-18
Replacement Fuse..............................................6-57
Key battery.................................. 6-35
Light Bulbs.................................. 6-42
Tires............................................. 6-40
Wheel........................................... 6-41
Wiper........................................... 6-29
Rocking the Vehicle.......................... 3-47
S
Safety Defects, Reporting................. 8-14
Satellite Radio................................... 5-44
Saving Fuel and Protection of the
Environment...................................... 3-45
Scheduled Maintenance...................... 6-4
Seats Front seat....................................... 2-5
Head restraint.............................. 2-10
Rear seat........................................ 2-7
Seat warmer................................... 2-6
Seat Belt System Automatic locking....................... 2-14
Emergency locking...................... 2-14
Extender....................................... 2-18
Pregnant women.......................... 2-14
3-point type................................. 2-15
Seat belt warning beep...................... 7-38
Security System Immobilizer system..................... 3-41
Theft-deterrent system................. 3-43
Smart Brake Support (SBS)............ 4-128
Collision warning...................... 4-130
Smart Brake Support (SBS) indicator
light (red)................................... 4-130
Stopping the Smart Brake Support
(SBS) system operation............. 4-130
Smart City Brake Support
(SCBS)............................................ 4-124
Collision warning...................... 4-126
Smart City Brake Support (SCBS)
Indicator Light (Red).................4-126
Stopping the Smart City Brake
Support (SCBS) System
Operation................................... 4-127
Spare Tire............................................ 7-5
Specifications...................................... 9-4
Speedometer...................................... 4-13
Speed Unit Selector.......................... 4-13
SRS Air Bags Front passenger occupant
classification system.................... 2-61
How the SRS air bags work........ 2-53
Limitations to SRS air bag.......... 2-59
Monitoring................................... 2-65
SRS air bag deployment
criteria.......................................... 2-58
Supplemental restraint system
components.................................. 2-51
Starting the Engine..............................4-5
Steering Wheel.................................. 3-30
Horn............................................. 4-55
Storage Compartments.................... 5-136
Center console........................... 5-136
Glove compartment................... 5-136
Overhead console...................... 5-136
Rear coat hooks......................... 5-138
Sunshade............................................3-40
Sunvisors......................................... 5-129
T
Tachometer........................................ 4-15
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