Page 466 of 640

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.
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
6-28
CX-9_8GC3-EA-17G_Edition1 2017-5-29 10:13:38
Page 468 of 640
NOTE
State or local regulations may restrict the
use of volatile organic compounds
(VOCs), which are commonly used as
anti-freeze agents in washer fluid. A
washer fluid with limited VOC content
should be used only if it provides adequate
freeze resistance for all regions and
climates in which the vehicle will be
operated.
Inspect fluid level in the washer fluid
reservoir; add fluid if necessary.
L
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
6-30
CX-9_8GC3-EA-17G_Edition12017-5-29 10:13:38
Page 477 of 640

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 turned off
(for vehicles with a type A instrument
cluster (page 4-31), messages are
displayed in the instrument cluster).
•The system does not operate and the
operation indicator light on the
transmitter does not flash when the
buttons are pressed.
•The system's operational range is
reduced.
Replacing the battery at an Authorized
Mazda Dealer is recommended to prevent
damage to the key. If replacing the battery
by yourself, follow the instruction.
Replacing the key battery
1. Press the knob and pull out the auxiliary key.
Knob
2. Twist a tape-wrapped flathead
screwdriver in the direction of the
arrow and open the cover slightly.
Cover
3. Insert the tape-wrapped flatheadscrewdriver into the gap and slide it in
the direction of the arrow.
Cover
Gap
4. Twist the flathead s crewdriver in the
direction of the arrow and remove the
cover.
Cover
Maintenance and Care
Owner Maintenance
6-39
CX-9_8GC3-EA-17G_Edition1 2017-5-29 10:13:38
Page 484 of 640

CAUTION
When removing the lens or lamp unit using
a flathead screwdriver, make sure that the
flathead screwdriver does not contact the
interior terminal. If the flathead screwdriver
contacts the terminal, a short circuit may
occur.
NOTE
•To replace the bulb, contact an
Authorized Mazda Dealer.
•Use the protective cover and carton for
the replacement bulb to dispose of the
old bulb promptly and out of the reach
of children.
▼Replacing Exterior Light Bulbs
Headlights (type
A), Headlights/
Daytime running lights (type B), Front
turn signal lights (type A), Daytime
running lights/Parking lights (type A),
Front side-marker lights (type A),
Signature wing illumination (type A)*,
Fog lights*, Brake lights, Taillights,
High-mount brake light, Side turn
signal lights, Rear side-marker lights
The LED bulb cannot be replaced as a
single unit because it is an integrated unit.
The LED bulb has to be replaced with the
unit. We recommend an Authorized
Mazda Dealer when the replacement is
necessary.
Front turn signal lights (type B),
Parking lights/Front side-marker lights
(type B)
NOTE
When replacing a bulb for the front turn
signal lights and parking lights/front
side-marker lights, turn the steering wheel
and change the direction in which the tires
are pointed to the position where the bulb
replacement can be done easily.
Turn the steering wheel after starting the
engine and stop the engine after you finish
turning the steering wheel.
1. If you are changing the right bulb, start
the engine, turn the steering wheel all
the way to the right, and turn off
engine. If you are changing the left
bulb, turn the steering wheel to the left,
and turn off engine.
2. Make sure the ignition is switched off, and the headligh t switch is off.
3. Turn the screw counterclockwise and remove it.
Maintenance and Care
Owner Maintenance
6-46*Some models.
CX-9_8GC3-EA-17G_Edition1 2017-5-29 10:13:38
Page 492 of 640

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.
Replacing the fuse s under the hood
If the headlights or other electrical
components do not work and the fuses in
the cabin are normal, inspect the fuse
block under the hood. If a fuse is blown, it
must be replaced. Follow these steps:
1. Make sure the ignition is switched off, and other switches are off.
2. Remove the fuse block cover.
Maintenance and Care
Owner Maintenance
6-54
CX-9_8GC3-EA-17G_Edition1 2017-5-29 10:13:38
Page 494 of 640
▼Fuse Panel Description
Fuse block (Engine compartment)
DESCRIPTION FUSE
RATING PROTECTED COMPONENT
1 WIPER.DEI 20 A Windshield wiper de-icer
*
2IG2 30 A For protection of various circuits
3 INJECTOR 30 A Engine control system
4― ― ―
5P.WINDOW1 30 A ―
6― ― ―
7― ― ―
8 EVVT 20 A Engine control system
9 DEFOG 40 A Rear window defogger
10 ― ― ―
11 R.HEATER 40 A Air conditioner
12 EPB L 20 A Electric parking brake (EPB) (LH)
13 AUDIO 40 A Audio system
14 EPB R 20 A Electric parking brake (EPB) (RH)
15 ENG.MAIN 40 A Engine control system
16 ABS/DSC M 50 A ABS, Dynami c stability control system
17
50 A For protection of various circuits
18 WIPER 20 A Front window wiper and washer
19 HEATER 40 A Air conditioner
Maintenance and Care
Owner Maintenance
6-56*Some models.
CX-9_8GC3-EA-17G_Edition1 2017-5-29 10:13:38
Page 495 of 640

DESCRIPTIONFUSE
RATING PROTECTED COMPONENT
20 ― ― ―
21 ENGINE.IG1 7.5 A Engine control system
22 C/U IG1 15 A For protection of various circuits
23 H/L LOW L 15 A Headlight low beam (LH)
24 H/L LOW R1 15 A ―
25 ENGINE3 15 A Engine control system
26 ENGINE2 15 A Engine control system
27 ENGINE1 15 A Engine control system
28 AT 15 A Transaxle control system
29 H/CLEAN 20 A ―
30 A/C 7.5 A Air conditioner
31 AT PUMP 15 A ―
32 STOP 10 A Brake lights
33 R.WIPER 15 A Rear window wiper
34 H/L HI 20 A Headlight high beam
35 H/L LOW R2 15 A Headlight low beam (RH)
36 FOG 15 A
Fog lights
*
377.5 A Engine control system
38 AUDIO2 7.5 A Audio system
*
39 INTERIOR 10 A Overhead light
40 METER215 A ―
41 METER1 10 A Instrument cluster
42 SRS1 7.5 A Air bag
43 AUDIO4 10 A
Audio system
*
44 AUDIO1 25 A
Audio system*
45 ABS/DSC S 30 A ABS, Dynamic stability control system
46 ― ― ―
47 ST.HEATER 15 A Heated steering wheel
*
48TAIL 15 A Parking lights
49 FUEL PUMP2 25 A Fuel system
50 HAZARD 25 A Hazard warning flashers, Turn signal lights, Tailli ghts
51 DRL 15 A Daytime running lights
52 R.OUTLET2 15 A Accessory sockets
53 HORN 15 A Horn
54 ROOM 25 A For protection of various circuits
Maintenance and Care
Owner Maintenance
*Some models.6-57
CX-9_8GC3-EA-17G_Edition1 2017-5-29 10:13:38
Page 496 of 640
Fuse block (Left side)
DESCRIPTIONFUSE
RATING PROTECTED COMPONENT
1 P.SEAT D 30 A Power seat
*
2 P.WINDOW3 30 A Power windows
3 R.OUTLET3 15 A Accessory sockets
4 P.WINDOW2 25 A Power windows
5PLG 2 0 A
Power liftgate
*
6 D.LOCK 25 A Power door locks
7 SEAT WARM 20 A Seat warmer
*
8SRS2/ESCL 15 ATrailer hitch*
9 SUNROOF 10 AMoonroof*
10 INTERIOR2 15 A Audio system
11
7.5 A Engine control system
12 MIRROR 7.5 A Power control mirror
13 AT IND 7.5 A AT shift indicator
14 F.OUTLET 15 A Accessory sockets
15 R.OUTLET1 15 A Accessory sockets
*
16― ― ―
Maintenance and Care
Owner Maintenance
6-58*Some models.
CX-9_8GC3-EA-17G_Edition1 2017-5-29 10:13:38