Page 486 of 692

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.
USB Power Outlet*
The USB power outlets can be used
regardless of whether the ignition is
switched to ACC or ON.
Only use USB devices that have a
maximum power consumption of 10.5W
(DC5V, 2.1A) or below.
USB power outlet
CAUTION
To prevent USB power outlets damage or
electrical failure, pay attention to the
following:
Do not use USB devices that require
more than 10.5 W (DC 5 V, 2.1 A).
Close the lid when the USB power
outlets are not in use to prevent
foreign objects and liquids from
getting into the USB power outlets.
Correctly connect the USB connector
into the USB power outlets.
NOTE
The USB power outlets are designed
only for charging and they cannot be
used for connecting to the vehicle's
audio system.
Interior Features
Interior Equipment
5-98*Some models.
CX-9_8HB2-EA-18G_Edition1 2018-5-11 13:09:27
Page 487 of 692

To prevent discharging of the battery, do
not use the USB power outlets for long
periods with the engine off or idling.
How to connect
The groove in the armrest box can be used
to pass the co rd of the device into the box
to connect it to the USB power outlets.
1. Open the lid.
2. Route the cord through the groove in
the armrest box and insert the USB
connector into the U SB power outlets.
Connector
Cup Holder
WA R N I N G
Never use a cup holder to hold hot liquids
while the vehicle is moving:
Using a cup holder to hold hot liquids while
the vehicle is moving is dangerous. If the
contents spill, you could be scalded.
Do not put anything other than cups or
drink cans in cup holders:
Putting objects other than cups or drink
cans in a cup holder is dangerous.
During sudden braking or maneuvering,
occupants could be hit and injured, or
objects could be thrown around the
vehicle, causing interference with the driver
and the possibility of an accident. Only use
a cup holder for cups or drink cans.
▼Front
Interior Features
Interior Equipment
5-99
CX-9_8HB2-EA-18G_Edition1
2018-5-11 13:09:27
Page 495 of 692

6Maintenance and Care
How to keep your Mazda in top condition.
Essential Information........................6-2 Introduction.................................. 6-2
Scheduled Maintenance.................... 6-4 Scheduled Maintenance (U.S.A.,
Canada, and Puerto Rico)............. 6-4
Scheduled Maintenance
(Mexico)..................................... 6-10
Maintenance Monitor................. 6-16
Owner Maintenance........................ 6-18 Owner Maintenance
Precautions................................. 6-18
Hood........................................... 6-20
Engine Compartment
Overview.................................... 6-22
Engine Oil...................................6-23
Engine Coolant........................... 6-25
Brake Fluid............ ..................... 6-27
Washer Fluid............................... 6-27
Body Lubrication...... .................. 6-28
Wiper Blades.............................. 6-29
Battery........................................ 6-34
Key Battery Replacement........... 6-36
Tires............................................ 6-38
Light Bulbs................................. 6-42
Fuses........................................... 6-50
Appearance Care............................. 6-57
Exterior Care.............................. 6-57
Interior Care................................6-63
6-1
CX-9_8HB2-EA-18G_Edition1 2018-5-11 13:09:27
Page 497 of 692

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
6-3
CX-9_8HB2-EA-18G_Edition1 2018-5-11 13:09:27
Page 516 of 692
Engine Compartment Overview
Engine oil dipstick
Brake fluid reservoir
Engine oil-filler cap
Fuse blockBattery
Cooling system capEngine coolant reservoir
Windshield washer fluid reservoir
Maintenance and Care
Owner Maintenance
6-22
CX-9_8HB2-EA-18G_Edition12018-5-11 13:09:27
Page 528 of 692

Battery
WA R N I N G
Wash hands after handling the battery and related accessories:
Battery posts, terminals and related accessories contain lead and lead compounds, chemicals
known to the State of California to cause cancer and reproductive harm.
Read the following precautions carefully before using the battery or inspecting to
ensure safe and correct handling:
Always wear eye protection when working near the battery:
Working without eye protection is dangerous. Battery fluid contains SULFURIC ACID which
could cause blindness if splashed into your ey es. Also, hydrogen gas produced during normal
battery operation, could ignite and cause the battery to explode.
Wear eye protection and protective gloves to prevent contact with battery fluid:
Spilled battery fluid is dangerous.
Battery fluid contains SULFURIC ACID which could ca use serious injuries if it gets in eyes, or on
the skin or clothing. If this happens, immediat ely flush your eyes with water for 15 minutes or
wash your skin thoroughly and get medical attention.
Always keep batteries out of the reach of children:
Allowing children to play near batteries is da ngerous. Battery fluid could cause serious injuries
if it gets in the eyes or on the skin.
Keep flames and sparks away from open battery cells and do not allow metal tools to
contact the positive (
) or negative () terminal of the battery when working near a battery.
Do not allow the positive (
) terminal to contact the vehicle body:
Flames and sparks near open battery cells a re dangerous. Hydrogen gas, produced during
normal battery operation, could ignite and cause the battery to explode. An exploding battery
can cause serious burns and injuries. Keep all flames including cigarettes and sparks away
from open battery cells.
Maintenance and Care
Owner Maintenance
6-34
CX-9_8HB2-EA-18G_Edition1 2018-5-11 13:09:27
Page 529 of 692

Keep all flames and sparks away from open battery cells because hydrogen gas is
produced from open battery cells while char ging the battery or adding battery fluid:
Flames and sparks near open battery cells are dangerous. Hydrogen gas, produced during
normal battery operation, could ignite and cause the battery to explode. An exploding battery
can cause serious burns and injuries. Keep al l flames including cigarettes and sparks away
from open battery cells.
NOTE
Before performing battery maintenance, remove the battery cover.
▼ 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 el ectrolyte 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 6
weeks.
▼ Battery Replacement
Contact an Authorized Mazda Dealer for a
battery replacement purchase.
Maintenance and Care
Owner Maintenance
6-35
CX-9_8HB2-EA-18G_Edition1
2018-5-11 13:09:27
Page 530 of 692

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 ba tteries 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 (for vehicles with a type A/type B
instrument cluster ( page 4-12, 4-29),
messages are displayed in the instrument
cluster).
The system does not operate and the
operation indicator light on the
transmitter does no t 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
Maintenance and Care
Owner Maintenance
6-36
CX-9_8HB2-EA-18G_Edition1 2018-5-11 13:09:27