fuel pump MAZDA MODEL CX-3 2021 Owners Manual

Fuel and Engine Exhaust Precautions
▼Fuel Requirements
Vehicles with catalytic converters or oxygen sensors must use ONLY 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 above)
*1 U.S. federal law requires that octane ratings be posted on gas station pumps.
Fuel with a rating lower than 87 octane (91 R ON) will negatively affect the emission control
system performance and could also cause engine knocking and serious 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 compounds 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 containing 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 more 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
Always use only a genuine Mazda fuel-filler
cap or an approved equivalent, available
at an Authorized Mazda Dealer. The wrong
cap can result in a serious malfunction of
the fuel and emission control systems.
(U.S.A. and Canada)
It may also cause the check engine light in
the instrument cluster to illuminate.
▼ Refueling
Before refueling, close all the doors,
windows, and the liftg
ate, and switch the
ignition OFF.
1. To open the fuel-filler lid, pull the remote fuel-filler lid release.

Remote fuel-filler lid release
2. To remove the fuel-filler cap, turn itcounterclockwise.
Before Driving
Fuel and Emission
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(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 4-21).
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 indicate 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 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.
After starting a cold engine, the engine
speed increases and a whining sound
from the engine compartment can be
heard.
When Driving
Start/Stop Engine
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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
7-20).
▼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 en gine has completely
started.
2. (Manual transaxle)
Continue to depress the clutch pedal
firmly until the en gine has completely
started.
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 st art while the push
button start indicator light (green)
flashes.

Indicator light
Push button start
Key
Emblem
When Driving
Start/Stop Engine
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DESCRIPTIONFUSE
RATING PROTECTED COMPONENT
15 A/C MAG 7.5 A Air conditioner
16 AT PUMP 15 A ―
17 AT 15 A Transaxle control system
18 D.LOCK 25 A Power door locks
19 H/L RH 20 A Headlight (RH)
20
7.5 A Engine control system
21 TAIL 20 A Taillights, License plate lights, Parking lights
22 ST.HEATER 15 A / 20 A Heated steering wheel
*, Headlight*
23ROOM 25 A Overhead light
24 FOG 15 A
Fog lights
*
25 H/CLEAN 20 A ―
26 STOP 10 A Brake lights
27 HORN 15 A Horn
28 H/L LH 20 A Headlight (LH)
29 ABS/DSC S 30 A ABS, Dynamic stability control system
30 HAZARD 15 A Hazard warning flashers, Turn signal lights
31 FUEL PUMP
SCR 15 A Fuel system
32 FUEL WARM 25 A ―
33 WIPER 20 A Front window wiper
34
50 A For protection of various circuits
35 FAN2
EPB L 30 A Electric parking brake (LH)
36 FUEL PUMP 30 A ―
37 ABS/DSC M 50 A ABS, Dynamic stability control system
38 EVVT 20 A Engine control system
39 ―― ―
40 FAN1
EPB R 30 A Electric parking brake (RH)
41 FAN3 40 A Cooling fan
42 ENG.MAIN 40 A Engine control system
43 EPS 60 A ―
44 DEFOG 40 A Rear window defogger
45 IG2 30 A For protection of various circuits
46 INJECTOR
ENG.SUB 30 A Engine control system
Maintenance and Care
Owner Maintenance
6-50*Some models.
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