2021 MAZDA MODEL 3 HATCHBACK key

▼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 engine has
completely started.
2. (Manual transmission)
Continue to depress the clutch
pedal firmly until the engine has
completely started.
(Automatic transmission)
Put the vehicle in park (P). If you
must restart the engine while the
vehicle is moving, shift into neutral
(N).
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 start
while the push button start
indicator light (green) flashes.

1. Indicator light
2. Push button start
3. Transmitter
4. Emblem

5. Make sure that the push button start indicator light (green) turns
on.
6. Press the push button start to start the engine.
When Driving
Start/Stop Engine
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NOTE
The engine cannot be started
unless the clutch pedal is fully
depressed (manual transmission)
or the brake pedal is fully
depressed (automatic
transmission).
If there is a malfunction with the
push button start function, the
push button start indicator light
(amber) flashes. In this case, the
engine may start, however, have
the vehicle checked at an
Authorized Mazda Dealer as
soon as possible.
If the push button start indicator
light (green) does not illuminate,
perform the operation from the
beginning again. If it does not
illuminate, have the vehicle
checked at an Authorized Mazda
Dealer.
To switch the ignition position
without starting the engine,
perform the following operations
after the push button start
indicator light (green) turns on.
1. Release the clutch pedal (manual transmission) or
brake pedal (automatic
transmission).
2. Press the push button start to switch the ignition position.
The ignition switches in the
order of ACC, ON, and off
each time the push button
start is pressed. To switch the
ignition position again,
perform the operation from
the beginning.
▼ Emergency Operation for Starting
the Engine
If the KEY warning indication (red) is
displayed, 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 transmission) or
the brake pedal (automatic
transmission) are required.
When Driving
Start/Stop Engine
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Turning the Engine Off
▼Turning the Engine
Off
WARNING
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 transmission)
Shift into neutral and set the
parking brake.
(Automatic transmission)
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 o ff.
CAUTION
 When leaving the vehicle, make sure
the push button start is o ff.
NOTE
(SKYACTIV -G 2.0, SKYACTIV -G 2.5)
The cooling fan in the engine
compartment could turn on for a few
minutes after the ignition is switched
from ON to OFF, whether or not the
A/C is on or o ff, to cool the engine
compartment quickly.
If the system detects that the
remaining battery power of the key is
low when the ignition is switched
from ON to ACC or OFF, the
following is indicated.
Replace with a new battery before
the key becomes unusable.
Refer to Key Battery Replacement on
page 6-31.
A message is indicated in the display
of the instrument cluster.
Refer to KEY Warning Indication/
Warning Light (Red) on page 7-33.
(Automatic transmission)
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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SignalWarning Refer to
Air Bag/Front Seat Belt Pretensioner System Warning Indication/
Warning Light*17-32
Tire Pressure Monitoring System (TPMS) Warning Indication/Warning
Light*1
Flashing
7-33
Tu r n s o n 7-37
(Red) KEY Warning Indication/Warning Light
*17-33
(Amber)
*High Beam Control System (HBC) Warning Indication/Warning
Light*17-34
i-ACTIVSENSE Warning Indication/Warning Light*17-34
Exterior Light Warning Indication/Warning Light*17-34
Low Fuel Warning Indication/Warning Light 7-35
Check Fuel Cap Warning Indication/Warning Light*17-35
Engine Oil Level Warning Indication/Warning Light*17-35
Seat Belt Warning Indication/Warning Light (Front seat) 7-36
(Red)Seat Belt Warning Light (Rear seat)
7-36
*Low Washer Fluid Level Warning Indication/Warning Light7-36
Door-Ajar Warning Indication
7-37
*Trunk lid-Ajar Warning Indication7-37
When Driving
Instrument Cluster and Display
4-24*Some models.
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SignalWarning Refer to
*Liftgate-Ajar Warning Indication 7-37
Door-Ajar Warning Light
7-37
*1 The light turns on when the ignition is switched on for an operation check, and turns off a few
seconds later or when the engine is started. If the light does not turn on or remains turned on, have
the vehicle inspected at an Authorized Mazda Dealer.
▼ Indication/Indicator Lights
These lights turn on or
flash to notify the user of the system operation status or a
system malfunction.
Signal Indicator Refer to
(Green)Seat Belt Indicator Light (Rear seat)
2-27
*Front Passenger Air Bag Deactivation Indicator Light2-71
Security Indicator LightImmobilizer
System3-41
Theft-Deterrent System
3-42
Malfunction 7-34
(Green) KEY Indicator Light
4-5
Wrench Indication/Indicator Light*14-29
*Shift Position Indication4-38
Lights-On Indicator Light
4-46
When Driving
Instrument Cluster and Display
*Some models.4-25
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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......... 6-4
Owner Maintenance............... 6-12 Owner Maintenance
Precautions......................... 6-12
Hood.................................. 6-13
Engine Compartment
Overview............................ 6-15
Engine Oil........................... 6-17
Engine Coolant.................... 6-20
Brake/Clutch Fluid............... 6-21
Washer Fluid....................... 6-22
Body Lubrication.................. 6-23
Wiper Blades....................... 6-23
Battery................................ 6-29
Key Battery Replacement...... 6-31
Tires.................................... 6-33
Light Bulbs...........................6-37
Fuses.................................. 6-40
Appearance Care.................... 6-48 Exterior Care....................... 6-48
Interior Care........................ 6-54
6-1
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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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No.FUSE RAT
-
ING PROTECTED COMPONENT
F7 15 A
―
20 A Fuel pump
F8 15 A Engine control system
F9 15 A Transmission control system
*
F1015 A Engine control system
F11 7.5 A Air conditioner
F12 15 A Engine control system
F13 15 A ―
F14 20 A
Front seat warmer
*
F15 20 A ―
F16 15 A For protection of various circuits
F17 ――
F18 15 A For protection of various circuits
F19 60 A Power steering system
F20 15 A Headlight (LH) 1
F21 15 A Headlight (RH) 1
F22 15 A Keyless system
F23 30 A ABS, Dynamic stability control system
F24 15 A Headlight (LH) 2
F25 15 A Headlight (RH) 2
F26 7.5 A On board diagnostics
F27 25 A For protection of various circuits
F28 25 A For protection of various circuits
F29 15 A Windshield washer
F30 15 A Accessory sockets
F31 15 A Horn
F32 ――
F33 ――
F34 ――
F35 50A ABS, Dynamic stability control system
F36 ――
F37 40 A Rear window defogger
F38 50 A For protection of various circuits
Maintenance and Care
Owner Maintenance
6-44*Some models.
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