2018 MAZDA MODEL 3 5-DOOR fuel pump

Fuel and Engine Exhaust Precautions
▼Fuel Requirements
Vehicles with catalytic converters or oxygen sensors must use O
NLY UNLEADED FUEL,
which will reduce exhaust emissions and keep spark plug fouling to a minimum.

This vehicle will perform best w ith fuel listed in the table.
Fuel
Octane Rating* (Anti-knock index)
Regular unleaded fuel 87 [(R
M)/2 method] or above (91 RON or above)
U.S. federal law requires that octane ratings be posted on gaso
line station pumps.
Fuel with a rating lower than 87 octane (91 RON) will negativel y affect the emission control
system performance and could also cause engine knocking and ser ious engine damage.
CAUTION
USE ONLY UNLEADED FUEL.
Leaded fuel is harmful to th e catalytic converter and oxygen sensors and will lead to
deterioration of the emission control system and or failures.
 This vehicle can only use oxygenated fuels containing no more than 10 % ethanol by
volume. Damage to the vehicle may occur wh en ethanol exceeds this recommendation, or
if the gasoline contains any methanol. Stop using gasohol of any kind if your vehicle engine
is performing poorly.
 Never add fuel system additives, otherwise th e emission control system could be damaged.
Consult an Authorized Mazda Dealer for details.
Gasoline blended with oxygenates such as alcohol or ether compo unds are generally
referred to as oxygenated fuels. The common gasoline blend that can be used with your
vehicle is ethanol blended at no more than 10 %. Gasoline conta ining alcohol, such as
ethanol or methanol, may be marketed under the name "Gasohol".

Vehicle damage and drivability problems resulting from the use of the following may not be
covered by the warranty.
Gasohol containing mo re than 10 % ethanol.
Gasoline or gasohol containing methanol.
Leaded fuel or leaded gasohol.
Before Driving
Fuel and Emission
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Fuel-Filler Lid and Cap
WA R N I N G
When removing the fuel-filler cap, loosen
the cap slightly and wait for any hissing to
stop, then remove it:
Fuel spray is dangerous. Fuel can burn skin
and eyes and cause illness if ingested. Fuel
spray is released when there is pressure in
the fuel tank and the fuel-filler cap is
removed too quickly.
Before refueling, stop the engine, and
always keep sparks and flames away from
the filler neck:
Fuel vapor is dangerous. It could be ignited
by sparks or flames causing serious burns
and injuries.
Additionally, use of the incorrect fuel-filler
cap or not using a fuel-filler cap may result
in a fuel leak, which could result in serious
burns or death in an accident.
Do not continue refueling after the fuel
pump nozzle shuts off automatically:
Continuing to add fuel after the fuel pump
nozzle has shut off automatically is
dangerous because overfilling the fuel tank
may cause fuel overflow or leakage. Fuel
overflow and leakage could damage the
vehicle and if the fuel ignites it could cause
a fire and explosion resulting in serious
injury or death.
CAUTION
(U.S.A. and Canada)
Always use only a genuine Mazda fuel-filler
cap or an approved eq uivalent, available at
an Authorized Mazda Dealer. The wrong
cap can result in a serious malfunction of
the fuel and emission control systems. It
may also cause the check engine light in
the instrument cluster to illuminate.
▼ Fuel-Filler Lid
To open, pull the re
mote fuel-filler lid
release.
To close, press the fuel-filler lid until it
locks securely.
Remote fuel-filler
lid release
Before Driving
Fuel and Emission
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ON
This is the normal running position after
the engine is started. The indicator light
(amber) turns off. (The indicator light
(amber) illuminates when the ignition is
switched ON and the engine is not
running.)
Some indicator lights/warning lights
should be inspected before the engine is
started (page 4-23).
NOTE
When the push button start is pressed to
ON, the sound of the fuel pump motor
operating near the fuel tank can be heard.
This does not indi cate an abnormality.
Starting the Engine
WA R N I N G
Radio waves from the key may affect
medical devices such as pacemakers:
Before using the key near people who use
medical devices, ask the medical device
manufacturer or your physician if radio
waves from the key will affect the device.
NOTE
The key must be carried because the key
carries an immobilizer chip that must
communicate with the engine controls at
short range.
The engine can be started when the push
button start is pressed from off, ACC, or
ON.
The push button start system functions
(function which can start the engine by
only carrying the key) can be
deactivated to prevent any possible
adverse effect on a user wearing a
pacemaker or other medical device. If
the system is deactivated, you will be
unable to start the engine by carrying
the key. Consult an Authorized Mazda
Dealer for details. If the push button
start system functions have been
deactivated, you can start the engine by
following the procedure indicated when
the key battery goes dead.
Refer to Engine Start Function When
Key Battery is Dead on page 4-8.
When Driving
Start/Stop Engine
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7. Press the push button start after boththe KEY indicator light (green) in the
instrument cluster and the push button
start indicator light (green) illuminate.
NOTE
After starting the engine, the push
button start indica tor light (amber)
turns off and the ignition switches to
the ON position.
After pressing the push button start
and before the engine starts, the
operation sound of the fuel pump
motor from near the fuel tank can be
heard, however, this does not
indicate a malfunction.
8. After starting the engine, let it idle for
about ten seconds.
NOTE
Whether the engine is cold or warm,
it should be started without the use
of the accelerator.
If the engine does not start the first
time, refer to Starting a Flooded
Engine under Emergency Starting. If
the engine still does not start, have
your vehicle inspected by an
Authorized Mazda Dealer (page 7-
19).
▼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 th e engine has completely
started.
When Driving
Start/Stop Engine
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▼Fuse Panel Description
Fuse block (Engine compartment)

Multiplex slow blow fuse
DESCRIPTION FUSE
RATING PROTECTED COMPONENT
1F OG 1 5 A
Fog lights
*
2H /L H I 2 0 A
Headlight high beam*2
3 H/CLEAN 20 A ―
4 STOP 10 A Brake lights
5 ROOM 15 A Overhead light
6
7.5 A Engine control system
7FUEL WARM 15 A ―
8 HAZARD 25 A Hazard warning flashers, Turn signal lights
9 ABS/DSCS 30 A ABS, Dynamic stability control system
10 METER2 7.5 A ―
11 AUDIO2 7.5 A Audio system
12 BOSE 25 A
Bose
® Sound System-equipped model*
13 AUDIO1 15 A Audio system
14 FUEL PUMP 15 A Fuel system
15 HID R DRL 15 A Headlight (RH)
*1, Daytime running lights*
16 AT PUMP 15 A ―
17 HORN 15 A Horn
18 TAIL 15 ATaillights, License plate lights,
Parking lights, Front side-mark-
er lights
Maintenance and Care
Owner Maintenance
*Some models.6-59
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