2020 MAZDA MODEL 3 HATCHBACK 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.

To achieve maximum engine performance, use the specified fuel.
Fuel Octane Rating*1 (Anti-knock index)
Regular unleaded fuel 87 [(R+M)/2 method] or above (91 RON or ab ove)
*1 U.S. federal law requires that octane ratings be posted on gas 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 the catalytic co nverter 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 when ethanol exceeds this recommendation, or
if the gasoline contains any methanol. Stop us ing gasohol of any kind if your vehicle engine
is performing poorly.
 Never add fuel system additives other than a Mazda genuine product, otherwise the
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
3-25
Mazda3_8HZ1-EA-19G_Edition1_old 2019-5-17 13:49:03

Do not run the engine when inside an
enclosed area:
Running the engine inside an enclosed
area, such as a garage, is dangerous.
Exhaust gas, which contains poisonous
carbon monoxide, could easily enter the
cabin. Loss of consciousness or even death
could occur.
Open the windows or adjust the heating or
cooling system to draw fresh air when
idling the engine:
Exhaust gas is dangerous. When the vehicle
is stopped with the windows closed and the
engine running for a long time even in an
open area, exhaust gas, which contains
poisonous carbon monoxide, could enter
the cabin. Loss of consciousness or even
death could occur.
Clear snow from underneath and around
your vehicle, particularly the tail pipe,
before starting the engine:
Running the engine when a vehicle is
stopped in deep snow is dangerous. The
exhaust pipe could be blocked by the snow,
allowing exhaust gas to enter the cabin.
Because exhaust gas contains poisonous
carbon monoxide, it could cause loss of
consciousness or even death to occupants
in the cabin.Fuel-Filler Lid and Cap
▼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.
Before Driving
Fuel and Emission
3-27
Mazda3_8HZ1-EA-19G_Edition1_old 2019-5-17 13:49:03

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.
Refer to Warning/Indicator Lights on page
4-23.
Refer to Indication/Indicator Lights on
page 4-25.
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
▼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 w
ill 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
4-5
Mazda3_8HZ1-EA-19G_Edition1_old 2019-5-17 13:49:03

Have your vehicle inspected at an
Authorized Mazda Dealer as soon as
possible.
NOTE
Under the following conditions, the
KEY warning indication (red) is
displayed after the push button start
is pressed. This informs the driver
that the push button start will not
switch to ACC, even if it is pressed
from off (page 7-33).
The key battery is dead.
The key is out of operational
range.
The key is placed in areas where it
is difficult for the system to detect
the signal (page 3-7).
A key from another manufacturer
similar to the key is in the
operational range.
(Forced engine starting method)
If the KEY warning indication (red)
is displayed, or the push button start
indicator ligh t (amber) flashes, this
could indicate that the engine may
not start using the usual starting
method (page 7-33). 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 the engine is force-started, the
KEY warning indication (red)
remains displayed and the push
button start indicator light (amber)
remains flashing.
(Automatic transmission)
When the selector lever is in the
neutral (N) position, the push button
start indicator light (green) does not
turn on.
7. Press the push button start after the
push button start indi cator light (green)
turns on.
NOTE
After starting the engine, the push
button start indicator 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 10 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
7-20).
When Driving
Start/Stop Engine
4-7
Mazda3_8HZ1-EA-19G_Edition1_old 2019-5-17 13:49:03

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
*
F10 15 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 Accessory sockets
F19 60 A Power steering system
F20 15 A Headlight (LH) 1
F21 15 A Headlight (RH) 1
F22 15 A For protection of various circuits
F23 30 A ABS, Dynamic st ability 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 Windscreen 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
F39 ― ―
F40 40 A Air conditioner
Maintenance and Care
Owner Maintenance
*Some models.6-41
Mazda3_8HZ1-EA-19G_Edition1_old 2019-5-17 13:49:03