2021 MAZDA MODEL CX-30 ECU

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 FULL and
LOW marks on the coolant reservoir
when the engine is cool.
SKYACTIV-G 2.0 and SKYACTIV-G
2.5

SKYACTIV-G 2.5T

If it is at or near LOW, add enough
coolant to the coolant reservoir to
provide freezing and corrosion
protection and to bring the level to
FULL.
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 reservoir is empty or new
coolant is required frequently, consult
an Authorized Mazda Dealer.
Maintenance and Care
Owner Maintenance
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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 battery replacement.
Key Battery Replacement
▼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 (CR2032 or equivalent).
The following conditions indicate that
the battery power is low:
A message, “Low Key Fob Battery.
Replace Battery” is displayed on the
multi-information display when the
ignition is switched OFF.
Maintenance and Care
Owner Maintenance
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3. Pull the fuse straight out with thefuse puller provided on the fuse
block located in the engine
compartment.
4. Inspect the fuse and replace it if it is
blown.
1. Normal
2. 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. Consult 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
accessory socket 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 fuses 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.
3. If any fuse but the MAIN fuse is blown, replace it with a new one of
the same amperage rating .
1. Normal
2. Blown

Maintenance and Care
Owner Maintenance
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WARNING
Do not replace the main fuse by
yourself. Have an Authorized
Mazda Dealer perform the
replacement:
Replacing the fuse by yourself is
dangerous because the MAIN fuse
is a high current fuse. Incorrect
replacement could cause an
electrical shock or a short circuit
resulting in a fire.
4. Reinstall the cover and make sure that it is securely installed.
Maintenance and Care
Owner Maintenance
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1. Wipe the soiled area with a softcloth soaked in a mild detergent
(approx. 5%) diluted with water.
2. Wipe off the remaining detergent using a cloth soaked in clean water
and wrung out well.
▼Active Driving Display
Maintenance*
The dust-proof sheet has a coating.
When cleaning , do not use a hard or
rough-surface cloth, or cleaning
detergent. In addition, if a chemical
solvent gets on the active driving
display, wipe it off immediately. The
dust-proof sheet could be damaged
and the surface coating could be
scratched. Use a fine, soft cloth such as
those used for cleaning eyeglasses.
NOTE
Use of compressed air when cleaning
the dust-proof sheet is recommended.
▼Panel Maintenance
If a panel becomes soiled, wipe it off
with a soft cloth soaked in clean water
and thoroughly wrung out.
If some areas require further cleaning,
use the following procedure:
1. Wipe the soiled area with a soft
cloth soaked in a mild detergent
(approx. 5 %) diluted with water.
2. Wipe off the remaining detergent using a cloth soaked in clean water
and wrung out well.
NOTE
Be particularly careful when cleaning
shiny surface panels and metallic parts
such as plating as they can be
scratched easily.
▼Cleaning the Window Interiors
If the windows become covered with
an oily, greasy, or waxy film, clean
them with glass cleaner. Follow the
directions on the container.
CAUTION

Do not scrape or scratch the inside
of the window glass. It could
damage the thermal filaments and
the antenna lines.
 When washing the inside of the
window glass, use a soft cloth
dampened in lukewarm water, gently
wiping the thermal filaments and the
antenna lines.
Use of glass cleaning products could
damage the thermal filaments and
the antenna lines.
▼ Cleaning the Floor Mats
Rubber floor mats should be cleaned
with mild soap and water only.
WARNING
Do not use rubber cleaners, such as
tire cleaner or tire shine, when
cleaning rubber
floor mats:
Cleaning the rubber floor mats with
rubber cleaning products makes the
floor mats slippery.
This may cause an accident when
depressing the accelerator, brake, or
clutch (Manual transmission) pedal or
when getting in or out of the vehicle.
After removing the floor mats for
cleaning, always reinstall them securely
(page 3-51).
Maintenance and Care
Appearance Care
*Some models.6-51
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(Vehicles without sub-woofer)
Turn the spare tire hold-down bolt
counterclockwise and remove the
spare tire.

1. Spare tire hold-down bolt
NOTE
If the spare tire hold-down bolt
cannot be loosened, hold the edge
of the tire and turn it
counterclockwise until the spare
tire hold-down bolt rotates.
To secure the spare tire
Store the spare tire in the reverse order
of removal. After storing , verify that the
spare tire is stored securely.
Changing a Flat Tire
▼ Changing a Flat Tire
NOTE
If the following occurs while driving , it
could indicate a flat tire.
Steering becomes
difficult.The vehicle begins to vibrate
excessively.
The vehicle pulls in one direction.
If you have a flat tire, drive slowly to a
level spot that is well off the road and
out of the way of traffic to change the
tire.
Stopping in traffic or on the shoulder
of a busy road is dangerous.
WARNING
Be sure to follow the directions for
changing a tire:
Changing a tire is dangerous if not
done properly. The vehicle can slip off
the jack and seriously injure someone.
No person should place any portion of
their body under a vehicle that is
supported by a jack.
Never allow anyone inside a vehicle
supported by a jack:
Allowing someone to remain in a
vehicle supported by a jack is
dangerous. The occupant could cause
the vehicle to fall resulting in serious
injury.
NOTE
Make sure the jack is well lubricated
before using it.
1. Park on a hard, level surface off the right-of-way and firmly set the
parking brake.
If Trouble Arises
Flat Tire
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3. Install the lug nuts with the bevelededge inward; tighten them by hand.

WARNING
Do not apply oil or grease to lug
nuts and bolts and do not tighten
the lug nuts beyond the
recommended tightening torque:
Applying oil or grease to lug nuts
and bolts is dangerous. The lug nuts
could loosen while driving and
cause the tire to come off, resulting
in an accident. In addition, lug nuts
and bolts could be damaged if
tightened more than necessary.
4. Turn the jack handle counterclockwise using the lug
wrench and lower the vehicle.
5. Use the lug wrench to tighten the nuts in the order shown.

If you are unsure of how tight the
nuts should be, have them
inspected at an Authorized Mazda
Dealer.
Nut tightening torque
N·m (kgf·m, ft·lbf) 108―
147 (12 ―14,
80― 108)
WARNING
Always securely and correctly
tighten the lug nuts:
Improperly or loosely tightened lug
nuts are dangerous. The wheel
could wobble or come off. This
could result in loss of vehicle
control and cause a serious
accident.
Be sure to reinstall the same nuts
you removed or replace them with
metric nuts of the same
configuration:
Because the wheel studs and lug
nuts on your Mazda have metric
threads, using a non-metric nut is
dangerous. On a metric stud, it
would not secure the wheel and
would damage the stud, which
could cause the wheel to slip
off
and cause an accident.
6. (Aluminum wheel equipped
vehicle)
Remove the center cap by tapping
it from the backside of the wheel
using the lug wrench.
7. (Without
flat tire belt)
Store the damaged and/or flat tire
in the rear cargo area.
(With flat tire belt)
Open the luggage mat.
8. Remove the belt for securing the
flat tire.
If Trouble Arises
Flat Tire
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9. Put the flat tire into the liftgate onthe left and toward the back.

10.Fold the right side of the rearseatback forward.
11.Thread the belt through the rear seat as shown in the figure.

12.Thread the buckle through thewheel as shown in the figure and
secure it so that the buckle does
not contact the wheel.

13.Thread the belt through the buckle,then pull the belt end to secure the
flat tire.

14.Return the seatback on the rightside of the rear seat to its original
position.
15.Remove the tire blocks and store the tools and jack.
16.Check the inflation pressure. Refer to Tires on page 9-8.
17.Have the flat tire repaired or replaced as soon as possible.
WARNING
Do not drive with any tires that have
incorrect air pressure:
Driving on tires with incorrect air
pressure is dangerous. Tires with
incorrect pressure could affect
handling and result in an accident.
When you check the regular tires' air
pressure, check the spare tire, too.
NOTE
To prevent the jack and tool from
rattling, store them properly.
If Trouble Arises
Flat Tire
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