2020 MAZDA MODEL CX-9 battery

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 workmanship, will not be honored.

Any auto repair shop using parts equivalent to your Mazda's original equipment may
perform maintenance. But we recommend that it always be done by an Authorized
Mazda Dealer using genuine Mazda parts.
Selecting “Maintenance Monitor” enables the system to notify you of your vehicle's
approaching inspection/servicing period (page 6-15).

The malfunction diagnosis connector is design ed exclusively for connecting the specially
designed device to perform on-board diagnosis.
Do not connect any devices other than the specially designed malfunction diagnosis devices
for servicing. If any device other than the malf unction 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_8HT8-EA-19I_Edition2_old 2019-9-24 13:14:55

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
6-21
CX-9_8HT8-EA-19I_Edition2_old2019-9-24 13:14:55

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
6-32
CX-9_8HT8-EA-19I_Edition2_old 2019-9-24 13:14:55

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 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 6
weeks.
▼Battery Replacement
Contact an Authorized Mazda Dealer for a
battery replacement purchase.
Maintenance and Care
Owner Maintenance
6-33
CX-9_8HT8-EA-19I_Edition2_old
2019-9-24 13:14:55

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.
(Type A)
Use CR2025 or an equivalent.
(Type B)
Use CR2032 or an equivalent.
The following conditi ons 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 4-13, 4-30),
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
Ty p e A
1. Press the knob and pull out the auxiliary key.
Knob
Maintenance and Care
Owner Maintenance
6-34
CX-9_8HT8-EA-19I_Edition2_old 2019-9-24 13:14:55

2. Twist a tape-wrapped flatheadscrewdriver 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 screwdriver in thedirection of the arrow and remove the
cover.
Cover
5. Remove the battery cap, then remove
the battery.
CAUTION
Be careful not to allow the rubber
ring shown in the figure to be
scratched or damaged.
 If the rubber ring detaches, reattach
it before inserting a new battery.
Rubber ring
Maintenance and Care
Owner Maintenance
6-35
CX-9_8HT8-EA-19I_Edition2_old 2019-9-24 13:14:55

6. Insert a new battery with the positivepole facing up, and then cover the
battery with the battery cap.
7. Close the cover.
8. Reinsert the auxiliary key.
Ty p e B
1. Remove the lower cover whilepressing the knob in the direction of
the arrow.
2. Press in the tab to unlock the uppercover.
3. Insert a tape-wrapped flatheadscrewdriver into the gap and slide it in
the direction of the arrow.
4. Twist the flathead screwdriver in the
direction of the arrow and remove the
upper cover.
Maintenance and Care
Owner Maintenance
6-36
CX-9_8HT8-EA-19I_Edition2_old 2019-9-24 13:14:55

5. Remove the cap using thetape-wrapped flathead screwdriver.
6. Remove the battery usingtape-wrapped flathead screwdriver.
7. Insert a new battery into the transmitter
so that the positive pole is facing up.
8. Install the cap.
9. Install the upper cover.
10. Insert the tabs of the lower cover into the slots of the transmitter and install
the lower cover.
Maintenance and Care
Owner Maintenance
6-37
CX-9_8HT8-EA-19I_Edition2_old 2019-9-24 13:14:55