engine MAZDA CX90 2024 Repair Manual

Check Engine WarningLight
WARNING
Do not disconnect the lead-acid
battery cables when the check engine
warning light is turned on/flashing.
The engine may be damaged when
reconnecting the lead-acid battery
cables, which could result in a fire.
The light turns on if the engine has a
problem while it is running.
Park the vehicle in a safe place
immediately and contact an
Authorized Mazda Dealer.
If any of the following problems occur,
the check engine warning light turns
on.
There is a problem with the hybrid
system
There is a problem with the emission
control system
There is a problem with the
transmission control system
The fuel tank level being very low or
approaching empty.
The fuel-filler cap is missing or not
tightened securely
If the check engine warning light
remains turned-on/flashing, do not
drive at high speed and have the
vehicle inspected by an Authorized
Mazda Dealer as soon as possible.
Automatic Transmission Warning Light
The light turns on if the system has a
problem.
Contact an Authorized Mazda Dealer.
CAUTION
Do not drive the vehicle with the
automatic transmission warning light
turned on. If the vehicle continues to
be driven while the automatic
transmission warning light is turned on,
the transmission could be damaged.
Have your vehicle inspected by an
Authorized Mazda Dealer as soon as
possible.
What to Do in Case of Emergency
Warning/Indicator Light Turns On
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Check Fuel Cap WarningLight
If the check fuel cap warning light
illuminates while driving, the fuel-filler
cap may not be installed properly.
Stop the hybrid system and reinstall the
fuel-filler cap.
Engine Oil Level Warning Light
This warning light indicates that the
engine oil level is around the MIN
mark.
CAUTION
Do not continue to drive the vehicle
with the engine oil level warning light
turned on. If the vehicle continues to
be driven with an insufficient amount
of engine oil, it could cause damage to
the engine.
Add 1 L (0.26 US gal, 0.22 Imp gal) of
engine oil (page 9-13).
What to Do in Case of Emergency
Warning/Indicator Light Turns On
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Wrench Indicator Light
The wrench indication/indicator light
is displayed/turns on under the
following conditions.
When the preset maintenance
period has arrived.
Refer to the Information section in
the Mazda Connect Owner's
Manual.
CAUTION
When the maintenance period
arrives, have your vehicle inspected
by an Authorized Mazda Dealer as
soon as possible. If maintenance is
neglected, a decrease in vehicle
performance may occur which
could cause damage. Have your
vehicle inspected before the
maintenance period arrives.
 If the vehicle continues to be
driven after the engine oil
replacement period has passed, it
could cause damage to the engine.
Replace the engine oil before the
maintenance period arrives.
NOTE
The wrench indication/indicator
light may display/turn on earlier than
the preset period depending on
vehicle usage conditions.
Whenever the engine oil is replaced,
a reset of the vehicle engine control
unit is necessary.
Refer to the Information section in
the Mazda Connect Owner's
Manual.
What to Do in Case of Emergency
Warning/Indicator Light Turns On
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Ve h i c l e Pro b l e m Wa r n i n gSound
If any of the following problems occur,
a warning sound is activated.
Automatic transmission problemIncrease in automatic transmission
internal temperature
Hybrid system problemBrake system problemElectric Parking Brake (EPB) problemEngine oil pressure decreaseEngine coolant temperature increaseEngine system problemShift control system problemCharging system problemApproaching vehicle audible system
problem
Check the information regarding the
warning indication on the center
display or the instrument cluster.
Shift Position Warning Sound
A warning sound is activated when the
selector lever position and the shift
position of the vehicle do not match.
Check the selector lever position.
What to Do in Case of Emergency
Warning Sound is Activated
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9Inspection and Servicing/Cleaning
Inspection and Servicing............ 9-2Inspection and Servicing.........9-2
Scheduled Maintenance............ 9-4 Scheduled Maintenance......... 9-4
Daily Inspection........................9-7 Daily Inspection.....................9-7
Warnings and Cautions for Daily
Inspection............................. 9-8
Engine Compartment
Inspection................................ 9-9 Checking the Inspection
Locations and Inspection
Items.................................... 9-9
Inspecting Engine Oil........... 9-13
Inspecting the Coolant......... 9-14
Inspecting the Brake Fluid..... 9-16
Replenishing Windshield Washer
Fluid................................... 9-17
Inspecting Lead-acid
Battery................................ 9-18
Replacing the Fuses.............. 9-21
Inspecting Body
Lubrication.......................... 9-22
Vehicle Exterior Inspection....... 9-23 Checking the Inspection
Locations and Inspection
Items.................................. 9-23
Replacing Windshield Wiper
Blade Rubbers..................... 9-23
Inspecting the Tires.............. 9-27Rotating the Tires................. 9-28
Replacing a Tire or a
Wheel................................. 9-29
Replacing Light Bulbs........... 9-30
Vehicle Interior Inspection....... 9-31 Checking the Inspection
Locations and Inspection
Items.................................. 9-31
Air Conditioner
Maintenance....................... 9-32
Key Inspection........................ 9-33 Warnings and Cautions about Key
Battery Replacement............ 9-33
Replacing the Key Battery..... 9-33
Exterior Maintenance.............. 9-35 Exterior Maintenance........... 9-35
Wheel Maintenance.............9-36
Interior Maintenance............... 9-37 Interior Maintenance........... 9-37
Instrument Panel Top (Soft pad)
Maintenance....................... 9-37
Upholstery and Synthetic Leather
Maintenance....................... 9-38
Leather Upholstery
Maintenance....................... 9-38
Maintenance of the Dust-proof
Sheet of the Active Driving
Display................................9-39
Seat Belt Maintenance......... 9-40
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Scheduled Maintenance
Vehicles utilizing the vehicle status monitor feature:
The vehicle status monitor feature alerts you of maintenance needs by turning on the
wrench indicator light or displaying a message in the instrument panel, or both.
Every maintenance must be done when the display/wrench indication comes on.
The display/wrench indication will come on before reaching the maximum interval
of 16,000 km (10,000 miles), or 12 mont hs (after the previous maintenance).
If you drive your vehicle under any of th e following conditions, follow the Severe
Driving Scheduled Maintenance and replace the engine oil and filter every 8,000 km
(5,000 miles) or 6 months, whichever comes first.
Otherwise, follow the Normal Driv ing Scheduled Maintenance intervals.
1. The vehicle is idled for long periods or driven at low speeds, such as with police cars, taxis, or driver's education school car.
2. The vehicle is driven mainly unpaved road.
3. The vehicle is driven mainly on mountain roads or uphill roads.
If you are following the Severe Driving Scheduled Maintenance (8,000 km (5,000
miles) or 6 months oil replacement interval), set the vehicle status monitor manually.
Refer to the Information section in the Mazda Connect Owner's Manual. Please
contact an Authorized Mazda Dealer if necessary.
USA and Canada Residents (Normal Driving Scheduled Maintenance):
Maintenance Item Number of times, maintenance was performed.
12345678
Engine oil & filter
*1RRRRRRRR
Spark plugs Replace every 120,000 km (75,000 miles).
Air filter RR
Fuel lines & hoses
*2IIII
Hoses and tubes for emission
*2II
Drive belts IIIIIIII
Exhaust system and heat shields II
Coolant level IIIIIIII
Coolant
*3
Engine Replace at first 192,000 km (120,000 miles) or 120
months; after that, every 96,000 km (60,000 miles) or 60 months.
EV system Replace at first 192,000 km (120,000 miles) or 180
months; after that, every 96,000 km (60,000 miles) or 60 months.
Brake lines, hoses and connections III I
Brake and clutch fluid level IIIIIIII
B ra ke fl uid RRRR
Inspection and Servicing/Cleaning
Scheduled Maintenance
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Maintenance ItemNumber of times, maintenance was performed.
12345678
Disc brakes IIIIIIII
Steering operation and linkages II II
Front and rear suspension, ball joints and
wheel bearing axial play IIII
Body condition inspection for
rust, corrosion and perfora-
tion Canada IIIIIIII
Driveshaft dust boot II II
Bolts and nuts on chassis and body TTT T
Cabin air filter Replace every 48,000 km (30,000 miles) or 24 months.
Tire rotation Rotate every 12,000 km (7,500 miles).
Tire inflation pressure and tire wear
*4Inspect every 12,000 km ( 7,500 miles) or 12 months.
Emergency flat tire repair kit (if equipped)
*5Inspect annually.
Function of all lights IIIIIIII
Chart symbols:
I: Inspect: Inspect and clean, repair, adjust, fill up, or replace if necessary.
R: Replace
T: Tighten
Remarks:
*1 Reset the engine oil data whenever replacing the engine oil regardless of the message/wrench indicator light display.
*2 According to state/provincial and federal regulations, failure to perform maintenance on these itemswill not void your emissions warranties. However, Mazda recommends that all maintenance services
be performed at the recommended time or mileage/kilometer period to ensure long-term reliability.
*3 Use of FL-22 is recommended when replacing coolant. Using coolant other than FL-22 may causeserious damage to the engine and cooling system.
*4 Inspect a spare tire if equipped.*5 Check the tire repair fluid expiration date every year when performing the periodic maintenance.Replace the tire repair fluid bottle with new one before the expiration date.
Inspection and Servicing/Cleaning
Scheduled Maintenance
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USA and Canada Residents (Severe Driving Scheduled Maintenance):
Number of months or kilometers (miles), whichever comes first.
Months 6 12182430364248
× 1000 km 8 16243240485664
× 1000 miles 5 10 15 20 25 30 35 40
Engine oil & filter
*1RRRRRRRR
Maintenance Interval (other than engine oil
& filter replacement)
*21st 2nd 3rd 4th
Chart symbols:
R: Replace
Remarks:
*1 Reset the engine oil data whenever replacing the engine oil regardless of the message/wrench indicator light display.
*2 Follow Maintenance Interval listed in Normal Driving Scheduled Maintenance.
Inspection and Servicing/Cleaning
Scheduled Maintenance
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Daily Inspection
The owner or a qualified service
technician should make these vehicle
inspections at the indicated intervals to
ensure safe and dependable
operation.

Bring any problem to the attention of
an Authorized Mazda Dealer or
qualified service technician as soon as
possible.
When Refueling
Brake fluid level (page 9-16)Coolant level (page 9-14)Engine oil level (page 9-13)Washer fluid level (page 9-17)
At Least Monthly
Tire inflation pressures (page 9-27)
At Least Twice a Year (For Example,
Every Spring and Fall)
You can do the following scheduled
maintenance items if you have some
mechanical ability and a few basic
tools and if you closely follow the
directions in this manual.
Coolant (page 9-14)Engine oil (page 9-13)

Improper or incomplete service may
result in problems. This section gives
instructions only for items that are easy
to perform.

As explained in the Inspection and
Servicing section (page 9-2), several
procedures can be done only by a
qualified service technician with
special tools.

Improper owner maintenance during
the warranty period may affect
warranty coverage. Refer to the
Inspection and Servicing section (page
9-2) for owner's responsibility in
protecting your investment. For details,
read the separate Mazda Warranty
statement provided with the vehicle. If
you are unsure about any servicing or
maintenance procedure, have it done
by an Authorized Mazda Dealer.

There are strict environmental laws
regarding the disposal of waste oil and
fluids. Please dispose of your waste
properly and with due regard to the
environment.

We recommend that you entrust the oil
and fluid changes of your vehicle to an
Authorized Mazda Dealer.
Inspection and Servicing/Cleaning
Daily Inspection
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Warnings and Cautionsfor Daily Inspection
WARNING
Do not perform maintenance work if
you lack sufficient knowledge and
experience or the proper tools and
equipment to do the work. Have
maintenance work done by a
qualified technician.
Performing maintenance work on a
vehicle is dangerous if not done
properly. You can be seriously injured
while performing some maintenance
procedures.
If you must run the hybrid system
while working under the hood, make
certain that you remove all jewelry
(especially rings, bracelets, watches,
and necklaces) and all neckties,
scarves, and similar loose clothing
before getting near the cooling fan
which may turn on unexpectedly.
Working under the hood with the
hybrid system operating is dangerous.
It becomes even more dangerous
when you wear jewelry, loose clothing
or have long hair or a long beard.
Either can become entangled in
moving parts and result in injury.
Pull over to a safe location, then
switch the vehicle power off and
make sure the fan is not running
before attempting to work near the
cooling fan.
Working near the cooling fan when it is
running is dangerous. The fan could
continue running indefinitely even if
the engine has stopped and the engine
compartment temperature is high. You
could be hit by the fan and seriously
injured.
Do not leave items in the motor
compartment.
After you have finished checking or
doing servicing in the engine
compartment, do not forget and leave
items such as tools or rags in the motor
compartment. Tools or other items left
in the engine compartment could
cause the hybrid system damage or a
fire leading to an unexpected accident.
CAUTION
When using a chassis roller, turn the
following systems off to prevent them
from mis-operating while the vehicle is
running on the chassis roller.
 Mazda Radar Cruise Control
(MRCC)
 Mazda Radar Cruise Control with
Stop & Go function (MRCC with
Stop & Go function)
 Cruising & Traffic Support (CTS)
 Smart Brake Support (SBS)
Inspection and Servicing/Cleaning
Daily Inspection
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