2019 MAZDA MODEL CX-3 engine

NOTE
Changing the coolant should be done by
an Authorized Mazda Dealer.
Inspect the antifreeze protection and
coolant level in the coolant reservoir at
least once a year―at the beginning of the
winter season―and before traveling where
temperatures may drop below freezing.

Inspect the condition and connections of
all cooling system and heater hoses.
Replace any that are swollen or
deteriorated.

The coolant should be at full in the
radiator and between the F and L marks on
the coolant reservoir when the engine is
cool.

Cooling system cap Coolant reservoir
Cooling fan
If it is at or near L, add enough coolant to
the coolant reservoir to provide freezing
and corrosion protection and to bring the
level to F.
Securely tighten the coolant reservoir tank
cap after adding coolant.
CAUTION
 Radiator coolant will damage paint.
Rinse it off quickly if spilled.
 If the “FL22” mark is shown on or near
the cooling system cap, 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.

If the coolant reserv oir is empty or new
coolant is required frequently, consult an
Authorized Mazda Dealer.
Maintenance and Care
Owner Maintenance
6-26
CX-3_8GR7-EA-18B_Edition1 2017-12-20 16:18:14

Inspect fluid level in the washer fluid
reservoir; add fluid if necessary.
E

Use plain water if washer fluid is
unavailable.
But use only washer fluid in cold weather
to prevent it from freezing.
NOTE
Front and rear washer fluid is supplied
from the same reservoir.
Body Lubrication
All moving points of the body, such as
door and hood hinges and locks, should be
lubricated each time the engine oil is
changed. Use a nonfreezing lubricant on
locks during cold weather.

Make sure the hood's secondary latch
keeps the hood from opening when the
primary latch is released.
Maintenance and Care
Owner Maintenance
6-28
CX-3_8GR7-EA-18B_Edition12017-12-20 16:18:14

▼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 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
(CR2025 or equivalent).
The following conditions indicate that the
battery power is low:
•The KEY indicator light (green) flashes
in the instrument cluster for about 30
seconds after the engine is switched
OFF.
Maintenance and Care
Owner Maintenance
6-34
CX-3_8GR7-EA-18B_Edition1 2017-12-20 16:18:14

Fuses
Your vehicle's electrical system is
protected by fuses.

If any lights, accessories, or controls do
not work, inspect the appropriate circuit
protector. If a fuse has blown, the inside
element will be melted.

If the same fuse blows again, avoid using
that system and consult an Authorized
Mazda Dealer as soon as possible.
▼ Fuse Replacement
Replacing the fuses on the vehicle's left
side
If the electrical system does not work, first
inspect the fuses on the vehicle's left side.

1. Make sure the ignition is switched off,
and other switches are off.
2. Open the fuse panel cover.
3. Pull the fuse straight out with the fuse puller provided on the fuse block
located in the engine compartment.
4. Inspect the fuse and replace it if it is
blown.
Normal Blown
5. Insert a new fuse of the same
amperage rating, and make sure it fits
tightly. If it does not fit tightly, have an
expert install it. We recommend an
Authorized Mazda Dealer.
If you have no spare fuses, borrow one
of the same rating from a circuit not
essential to vehicle operation, such as
the AUDIO or OUTLET circuit.
CAUTION
Always replace a fuse with a genuine
Mazda fuse or equivalent of the same
rating. Otherwise you may damage the
electric system.
6. Reinstall the cover and make sure that it is securely installed.
Maintenance and Care
Owner Maintenance
6-48
CX-3_8GR7-EA-18B_Edition1 2017-12-20 16:18:14

▼Fuse Panel Description
Fuse block (Engine compartment)

DESCRIPTION FUSE
RATING PROTECTED COMPONENT
1 C/U IG1 15 A For protect ion of various circuits
2 ENGINE IG1 7.5 A Engine control system
3 SUNROOF 10 A Moonroof
*
4 INTERIOR 15 A Overhead light, Audio system
5
7.5 A Engine control system
6 AUDIO2
ENGINE4 15 A Engine control system
7 METER1 10 A Instrument cluster
8 SRS1 7.5 A Air bag
9 METER2 7.5 A ―
10 RADIO 7.5 A Audio system
11 ENGINE3 15 A Engine control system
12 ENGINE1 15 A ―
13 ENGINE2 15 A Engine control system
14 AUDIO1 25 A Audio system
Maintenance and Care
Owner Maintenance
6-50*Some models.
CX-3_8GR7-EA-18B_Edition1 2017-12-20 16:18:14

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 p late 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 FA N 2
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 FA N 1
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 protectio n of various circuits
46 INJECTOR
ENG.SUB 30 A Engine control system
Maintenance and Care
Owner Maintenance
*Some models.6-51
CX-3_8GR7-EA-18B_Edition1
2017-12-20 16:18:14

Water Marks
Occurrence
Rain, fog, dew, and even tap water can
contain harmful minerals such as salt and
lime. If moisture containing these minerals
settles on the vehicle and evaporates, the
minerals will concentrate and harden to
form white rings. The rings can damage
your vehicle's finish.
Prevention
It is necessary to wash and wax your
vehicle to preserve it s finish according to
the instructions in this section. These steps
should be taken immediately after you find
water marks on your vehicle's finish.
Paint Chipping
Occurrence
Paint chipping occurs when gravel thrown
in the air by another vehicle's tires hits
your vehicle.
How to avoid paint chipping
Keeping a safe distance between you and
the vehicle ahead reduces the chances of
having your paint chipped by flying
gravel.
NOTE
•The paint chipping zone varies with the
speed of the vehicle. For example, when
traveling at 90 km/h (56 mph), the paint
chipping zone is 50 m (164 ft).
•In low temperatures a vehicle's finish
hardens. This increases the chance of
paint chipping.
•Chipped paint can lead to rust forming
on your Mazda. Before this happens,
repair the damage by using Mazda
touch-up paint according to the
instructions in this section. Failure to
repair the affected area could lead to
serious rusting and expensive repairs.

Follow all label and container directions
when using a chemical cleaner or polish.
Read all warnings and cautions.
▼ Maintaining the Finish
Wa s h i n g
CAUTION

When the wiper lever is in the
position and the ignition is switched ON,
the wipers may move automatically in
the following cases:
 If the windshield above the rain sensor
is touched or wiped with a cloth.
 If the windshield is struck with a hand
or other object from either outside or
inside the vehicle.
Keep hands and scrapers clear of the
windshield when the wiper lever is in the
position and the ignition is
switched ON as fingers could be pinched
or the wipers and wiper blades damaged
when the wipers activate automatically.
If you are going to clean the windshield,
be sure the wipers are turned off
completely (when it is most likely that the
engine is left running) this is particularly
important when clearing ice and snow.
Maintenance and Care
Appearance Care
6-55
CX-3_8GR7-EA-18B_Edition1 2017-12-20 16:18:14

Do not spray water in the engine
compartment. Otherwise, it could result
in engine-starting problems or damage
to electrical parts.
 When washing and waxing the vehicle,
be careful not to apply excessive force to
any single area of the vehicle roof or the
antenna. Otherwise, you could dent the
vehicle or damage the antenna.
To help protect the finish from rust and
deterioration, wash your Mazda
thoroughly and frequently, at least once a
month, with lukewarm or cold water.

If the vehicle is washed improperly, the
paint surface could be scratched. Here are
some examples of how scratching could
occur.

Scratches occur on the paint surface when:
•The vehicle is washed without first
rinsing off dirt and other foreign matter.
•The vehicle is washed with a rough, dry,
or dirty cloth.
•The vehicle is washed at a car wash that
uses brushes that ar e dirty or too stiff.
•Cleansers or wax containing abrasives
are used.
NOTE
•Mazda is not responsible for scratches
caused by automatic car washes or
improper washing.
•Scratches are more noticeable on
vehicles with darker paint finishes.
To minimize scratche s on the vehicle's
paint finish:
•Rinse off any dirt or other foreign matter
using lukewarm or cold water before
washing.
•Use plenty of lukewarm or cold water
and a soft cloth when washing the
vehicle. Do not use a nylon cloth.
•Rub gently when washing or drying the
vehicle.
•Take your vehicle only to a car wash
that keeps its brush es well maintained.
•Do not use abrasive cleansers or wax
that contain abrasives.
CAUTION
Do not use steel wool, abrasive cleaners,
or strong detergents containing highly
alkaline or caustic agents on
chrome-plated or anodized aluminum
parts. This may damage the protective
coating; also, cleaners and detergents
may discolor or deteriorate the paint.
Pay special attention to removing salt, dirt,
mud, and other foreign material from the
underside of the fenders, and make sure
the drain holes in the lower edges of the
doors and rocker panels are clean.

Maintenance and Care
Appearance Care
6-56
CX-3_8GR7-EA-18B_Edition1 2017-12-20 16:18:14