Electrical MAZDA MODEL 3 HATCHBACK 2018 (in English) User Guide

After starting a cold engine, the engine
speed increases and a whining sound
from the engine compartment can be
heard.
This is for improved exhaust gas
purification and does not indicate any
parts defect.
Engine-starting is controlled by the
spark ignition system.
This system meets all Canadian
Interference-Causing Equipment
Standard requirements regulating the
impulse electrical field strength of radio
noise.
1. Make sure you are carrying the key.
2. Occupants should fasten their seat belts.
3. Make sure the parking brake is on.
4. Continue to press the brake pedal firmly until the engine has completely
started.
5. (Manual transaxle)
Continue to press the clutch pedal
firmly until the engine has completely
started.
(Automatic transaxle)
Put the vehicle in park (P). If you must
restart the engine while the vehicle is
moving, shift into neutral (N).
NOTE
(Manual transaxle)
The starter will not operate if the
clutch pedal is not depressed
sufficiently.
(Automatic transaxle)
The starter will not operate if the
selector lever is not in P or N and
the brake pedal is not depressed
sufficiently.
6. Verify that the KEY indicator light
(green) in the instr ument cluster and
the push button start indicator light
(green) illuminate.
Indicator light
Push b utton start
KEY indicator light
(green)/ KEY
warning light (red)
NOTE
If the push button start indicator
light (green) flashes, make sure that
the key is being carried.
If the push button start indicator
light (green) flashes with the key
being carried, touch the key to the
push button start and start the
engine. Refer to Engine Start
Function When Key Battery is Dead
on page 4-8.
When Driving
Start/Stop Engine
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i-ELOOP*
The i-ELOOP system suppresses engine load used for generating power and improves
driveability and fuel economy by generating electricity with th e kinetic energy that is
generated when the vehicle slows down by applying the brakes or during engine braking.
Stores large amounts of electricity instantly and efficiently u ses the electricity for electrical
devices and accessories.
Variable
voltage
alternator
CapacitorDC-DC converter
CAUTION

High-current electricity
flows through the following parts, therefore do not touch them.
 Variable voltage alternator
 DC-DC converter
 Capacitor
 If the capacitor is to be disposed of, al ways consult an Authorized Mazda Dealer.
For details, go to the following URL.
http://www.mazda.com/csr /environment/recycling
▼i-ELOOP Indicator Light/Control
Status Display
The driver is noti
fied of the i-ELOOP
power generating status and the vehicle
conditions by the i-ELOOP indicator light
and the control status display.
i-ELOOP Indicator Light

Illuminated (vehicle without type B
audio)
The light turns on during power
generation.
When Driving
i-ELOOP
4-70*Some models.
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NOTE
The fuel economy data can be reset by doing the following operation:
Press the reset switch from the menu screen.
When the function which synchronizes the fuel economy monitor and the trip meter is
on, reset trip A of the trip meter.
Delete the average fuel economy information displayed in the trip computer.
After resetting the fuel economy data, “-- -” is displayed while the average fuel economy
is calculated.
▼ Control Status Display
The power generating status is displayed
Indication on display
Control status
Displays the level of electricity generated by regen-
erative braking.
Displays the amount of the electricity stored in the
capacitor.
Displays the status of th e electricity stored in the
capacitor and being supplied to the electrical devices
(whole vehicle in display is illuminated simultaneous-
ly).
Displays the accumulated fuel economy.
▼ Ending Screen Display
If the ending display
on the fuel economy m onitor is on when the ignition is switched from
ON to OFF, the information regarding the fuel economy is displa yed.
When Driving
Fuel Economy Monitor
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Without CD Player

With Electric Parking
Brake (EPB)
Without Electric Parking
Brake (EPB)
CAUTION
To prevent accessory socket damage or
electrical failure, pay attention to the
following:
 Do not use accessories that require
more than 120 W (DC 12 V, 10 A).
 Do not use accessories that are not
genuine Mazda accessories or the
equivalent.
 Close the cover when the accessory
socket is not in use to prevent foreign
objects and liquids from getting into
the accessory socket.
 Correctly insert the plug into the
accessory socket.
 Do not insert the cigarette lighter into
the accessory socket.
Noise may occur on the audio playback
depending on the device connected to
the accessory socket.
 Depending on the device connected to
the accessory socket, the vehicle's
electrical system may be affected, which
could cause the warning light to
illuminate. Disconnect the connected
device and make sure that the problem is
resolved. If the problem is resolved,
disconnect the device from the socket
and switch the ignition off. If the problem
is not resolved, consult an Authorized
Mazda Dealer.
NOTE
To prevent discharging of the battery, do
not use the socket for long periods with the
engine off or idling.
Interior Features
Interior Equipment
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NOTE
If you elect to perform maintenance yourself or have your vehicle serviced at a location
other than an Authorized Mazda Dealer, Mazda requires that all fluids, parts and materials
must meet Mazda standards for durability and performance as described in this manual.

Claims against the warranty resulting from lack of maintenance, as opposed to defective
materials or authorized Mazda wo rkmanship, will not be honored.

Any auto repair shop using parts equivalent to your Mazda's ori ginal equipment may
perform maintenance. But we recommend that it always be done by an Authorized
Mazda Dealer using ge nuine Mazda parts.
Selecting “Maintenance Monitor” enables the system to notify yo u of your vehicle's
approaching inspection/servicing period (page 6-16).

The malfunction diagnosis connector is designed exclusively for connecting the specially
designed device to perform on-board diagnosis.
Do not connect any devices other than the specially designed ma lfunction diagnosis devices
for servicing. If any device othe r than the malfunction diagnosis device is connected, it may
affect the vehicle's electrical devices or lead to damage such as battery depletion.
Malfunction
diagnosis
connector
Maintenance and Care
Essential Information
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Chart symbols:
I: Inspect: Inspect and clean, r epair, adjust, fill up, or replac e if necessary.
T: Tighten
Remarks:
*1 The engine oil and filter must b e changed at least once a year or within 12,000 km (7,500 miles) since last
engine oil and filter change. Re set the engine oil data whenever replacing the engine oil regardless of the
message/wrench indicator light display.
*2 Use of FL-22 is recommended when replacing engine coolant. Using engine coolant other than FL-22 may
cause serious damage to the engine and cooling system.
*3 According to state/provincial and federal regulations, failure to perform maintenance on these items will not
void your emissions warranties. H owever, Mazda recommends that all maintenance services be performed at
the recommended time or mileage/kilometer period to ensure long -term reliability.
*4 The Tire Pressure Monitoring System (TPMS) initialization must be performed so that the system operates
normally (if equipped).
*5 Check the tire repair fluid expiration date every year when pe rforming the periodic maintenance. Replace the
tire repair fluid bottle with ne w one before the expiration dat e.
▼Schedule 2
U.S.A. and Puerto Rico residents - Severe driving conditions ma
intenance interval
Maintenance IntervalNumber of months or kilometers (miles), whichever comes first.
Months 6 1218243036424854606672
×1000 km 8 16 24 32 40 48 56 64 72 80 88 96
×1000 miles 5 10 15 20 25 30 35 40 45 50 55 60
ENGINE
Drive belts II
Engine oil & filter Flexible
*1Replace when wrench indicator light is ON. (Max interval: 12
months or 12,000 km (7,500 miles))
Fixed RRRRRRRRRRRR
COOLING SYSTEM
Engine coolant
*2Replace at first 192,000 km (120, 000 miles) or 10 years; after
that, every 96,000 km (60,000 miles) or 5 years.
Engine coolant level IIIIIIIIIIII
FUEL SYSTEM
Air filter
*3Replace when any equivalent tim ing of replacing engine oil.
(Max interval: 36 months or 60,000 km (37,500 miles))
Fuel lines and hoses
*4III
Hoses and tubes for emission
*4I
IGNITION SYSTEM
Spark plugs Replace every 12 0,000 km (75,000 miles).
ELECTRICAL SYSTEM
Function of all lights IIIIIIIIIIII
Maintenance and Care
Scheduled Maintenance
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*4 According to state/provincial and federal regulations, failure to perform maintenance on these items will not
void your emissions warranties. H owever, Mazda recommends that all maintenance services be performed at
the recommended time or mileage/kilometer period to ensure long -term reliability.
*5 The Tire Pressure Monitoring System (TPMS) initialization must be performed so that the system operates
normally (if equipped).
*6 Check the tire repair fluid expiration date every year when pe rforming the periodic maintenance. Replace the
tire repair fluid bottle with ne w one before the expiration dat e.

Canada residents
Maintenance Interval Number of months or kilometers (miles), whichever comes first.
Months 6 1218243036424854606672
×1000 km 8 16 24 32 40 48 56 64 72 80 88 96
×1000 miles 5 10 15 20 25 30 35 40 45 50 55 60
ENGINE
Drive belts II
Engine oil & filter
*1RRRRRRRRRRRR
COOLING SYSTEM
Engine coolant
*2Replace at first 192,000 km (120, 000 miles) or 10 years; after
that, every 96,000 km (60,000 miles) or 5 years.
Engine coolant level IIIIIIIIIIII
FUEL SYSTEM
Air filter IIIIIIIIIIII
Replace every 56,000 km (35 ,000 miles) or 3 years.
Fuel lines and hoses
*3III
Hoses and tubes for emission
*3I
IGNITION SYSTEM
Spark plugs Replace every 120,000 km (75,000 miles).
ELECTRICAL SYSTEM
Function of all lights IIIIIIIIIIII
CHASSIS and BODY
Brake lines, hoses and connections II I
Brake and clutch fluid level I I I I I I I I I I I I
Disc brakes Inspect every 24,000 km (15,000 miles) or 1 years.
Tire (Rotation)
*4Rotate every 8,000 km (5,000 miles).
Tire inflation pressure and tire wear
*4IIIIIIIIIIII
Steering operation and linkages I I I
Front and rear suspensi on, ball joints and wheel
bearing axial play III
Driveshaft dust boots I I I
Maintenance and Care
Scheduled Maintenance
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Maintenance IntervalNumber of months or kilometers, whichever comes first
Months 3 6 9 121518212427303336
×1000 km 5 1015202530354045505560
IGNITION SYSTEM
Spark plugs IIIIII
Replace every 120,000 km
ELECTRICAL SYSTEM
Function of all lights I I I I I I I I I I I I
CHASSIS and BODY
Brake lines, hoses and connections I I I
Brake and clutch fluid level I I I I I
Brake fluid R
Disc brakes IIIIII
Tire (Rotation)
*3Rotate every 10,000 km
Tire inflation pressure and tire wear
*3IIIIII
Steering operation and linkages IIIIII
Front and rear suspension, ball joints and wheel
bearing axial play III
Driveshaft dust boots III
Bolts and nuts on chassis and body TT T
Exhaust system and heat shields III
All locks and hinges LLLLLL
Washer fluid level IIIIII
Emergency flat tire repair kit (if installed)
*4Inspect annually.
AIR CONDITIONER SYSTEM
Cabin air filter RRR
Chart symbols:
I: Inspect: Inspect and clean, re pair, adjust, fill up, or replac e if necessary.
R: Replace
L: Lubricate
C: Clean
T: Tighten
Remarks:
*1 Use of FL-22 is recommended wh en replacing engine coolant. Using engine coolant other than FL-22 may
cause serious damage to the engine and cooling system.
*2 According to state/provincial and federal regulations, failure to perform maintenance on these items will not void your emissions warranties. However, Mazda recommends that all maintenance services be performed at
the recommended time or kilomete r period to ensure long-term reliability.
*3 The Tire Pressure Monitoring Sy stem (TPMS) initialization must be performed so that the system operates
normally (if equipped).
Maintenance and Care
Scheduled Maintenance
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*4 Check the tire repair fluid expiration date every year when performing the periodic maintenance. Replace the
tire repair fluid bottle with ne w one before the expiration dat e.
(Cont.)
Maintenance Interval Number of months or kilometers, whichever comes first
Months 39 42 45 48 51 54 57 60 63 66 69 72
×1000 km 65707580859095100105110115120
ENGINE
Drive belts II
Engine oil & filter RRRRRRRRRRRR
COOLING SYSTEM
Cooling system II
Engine coolant
*1Replace at first 200,000 km or 10 years; after that, every 100,000 km or 5 years
Engine coolant level IIIIIIIIIIII
FUEL SYSTEM
Air filter CRCRCR
Fuel lines and hoses I
*2I
Hoses and tubes for emission I
*2I
Fuel filter Replace every 60,000 km
IGNITION SYSTEM
Spark plugs IIIIII
Replace every 120,000 km
ELECTRICAL SYSTEM
Function of all lights IIIIIIIIIIII
CHASSIS and BODY
Brake lines, hoses and connections II I
Brake and clutch fluid level II I I
Brake fluid RR
Disc brakes IIIIII
Tire (Rotation)
*3Rotate every 10,000 km
Tire inflation pressure and tire wear
*3IIIIII
Steering operation and linkages IIIIII
Front and rear suspensi on, ball joints and wheel
bearing axial play III
Driveshaft dust boots I I I
Bolts and nuts on chassis and body T T T
Exhaust system and heat shields I I I
All locks and hinges LLLLLL
Maintenance and Care
Scheduled Maintenance
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▼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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