2024 MAZDA CX90 engine

Rear Window DefoggerSwitch
The rear window defogger warms the
rear window and removes fog.
When the rear window defogger is
operated, the following equipment
operates in conjunction with it.
Mirror defogger*
Refer to How to Use the Mirror
Defogger on page 5-80.
Windshield wiper de-icer*
Refer to How to Use the Windshield
Wiper De-icer on page 5-81.
Warnings and Cautionsfor Using the Rear
Window Defogger Switch
CAUTION
 Be careful not to scratch the
filaments when washing the rear
window. The filaments are installed
inside the rear window.
 Use the rear window defogger while
the engine is running. In addition, do
not use the rear window defogger for
a long time. Otherwise, the
lead-acid battery power could be
depleted.
Driving
Rear Window Defogger Switch
5-78*Some models.
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How to Use the TractionControl System (TCS)
Switch the vehicle power ON.
The TCS is operable.
When the TCS operates, the TCS/DSC
operation indicator light
flashes.
Stopping the TCS Operation
The TCS operation is canceled and the
TCS OFF indicator light
in the
instrument cluster and the TCS OFF
switch indicator light turn on.
Press the TCS OFF switch again to
enable the TCS operation.
NOTE
If the hybrid system is stopped while
the TCS operation is canceled, the
TCS becomes operational when the
hybrid system is started the next
time.
When the TCS is on and you attempt
to free the vehicle from being stuck,
the TCS will activate. Depressing the
accelerator will not increase engine
power and freeing the vehicle from
being stuck might be difficult. When
this happens, turn off the TCS.
If the TCS is canceled and the
following systems are operated, the
TCS becomes operational.
Smart Brake Support (SBS)
Mazda Radar Cruise Control
(MRCC)
Cruising & Traffic Support (CTS)
Driving
Traction Control System (TCS)
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Mazda intelligent DriveSelect (Mi-Drive)
Mi-Drive is a system that switches the
drive modes depending on the driving
conditions, road conditions and
vehicle conditions. The Mi-Drive has
the following driving modes.
TOWING Mode
*
The vehicle is driven with both engine
and motor power to optimize its
power performance. This mode
reduces the loss of driving
performance due to increased weight
when towing a trailer and improves the
vehicle stability.
SPORT Mode
The vehicle is driven with both engine
and motor power to optimize its
maneuverability performance. This
mode increases vehicle response when
the accelerator pedal is depressed and
accelerates powerfully.
NORMAL Mode
The vehicle is driven so that the engine
and motor are efficiently controlled to
optimize fuel efficiency. If necessary,
the motor can be used as a generator
to charge the high voltage battery. In
addition, when the accelerator pedal is
depressed, the vehicle accelerates
using both engine and motor power.
When the vehicle is driven in NORMAL
mode only by motor power, the EV
drive indicator light
in the
instrument cluster turns on.
EV Mode
The vehicle is driven by motor power
using the electrical power stored in the
high voltage battery.
OFF-ROAD Mode
The vehicle is driven with both engine
and motor power to optimize its
power performance. This mode
prevents the drive wheels from
spinning during off-road driving and
improves the running performance.
Driving
Mazda intelligent Drive Select (Mi-Drive)
*Some models.5-95
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(SPORT Mode)
(NORMAL Mode)
(EV Mode)
(OFF-ROAD Mode)
NOTE
TOWING mode can be selected only
when electrically connected to the
trailer using a Mazda genuine trailer
hitch. In addition, it may take some
time until the connection is detected
and TOWING mode is displayed.
Consult an Authorized Mazda Dealer
for details.
Depending on driving conditions
when selecting TOWING mode/
SPORT mode/OFF-ROAD mode, the
vehicle may perform shift-down or
accelerate slightly.
When SPORT mode/OFF-ROAD
mode is selected, driving the vehicle
at higher engine speeds increases
and fuel economy may worsen.
Canceling SPORT mode/OFF-ROAD
mode during normal driving is
recommended.
When setting the Mazda Radar
Cruise Control (MRCC) while driving
in SPORT mode, the mode is
switched to NORMAL mode. In
addition, while the MRCC is being
used, the mode cannot be switched
to SPORT mode.
Switching to EV mode may not be
possible depending on the driving
operations, driving conditions, and
high voltage battery condition.
When the system determines that
the engine needs to be started while
the vehicle is being driven in EV
mode, the mode is switched to
NORMAL mode.
The remaining distance-to-full
discharge for EV mode may
decrease, even when the vehicle is
being driven in a mode other than
EV mode.
The maximum speed in EV mode is
140 km/h (86 mph).
The drive mode cannot be switched
in the following cases.
The Antilock Brake System (ABS) is
operating.
The Traction Control System (TCS)
is operating.
The Dynamic Stability Control
(DSC) is operating.
The steering wheel is being
operated abruptly.
The driving mode in which the
display in the instrument cluster is
grayed out cannot be selected.
When the vehicle power is switched
OFF, the mode returns to NORMAL
mode. However, TOWING mode
before switching the vehicle power
OFF is maintained only when the
trailer is connected in TOWING
mode.
Driving
Mazda intelligent Drive Select (Mi-Drive)
5-97
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Always close the door and windows
when refueling. If a fire occurs with
the doors or windows open, the
flames may spread into cabin.
 Do not spill fuel on the vehicle while
refueling. It may cause discoloration,
stains, or paint damage.
 Do not use any non-genuine
fuel-filler cap. Use of a non-genuine
fuel-filler cap may lead to a
malfunction in the fuel system or
emission system.
(U.S.A. and Canada)
It may also cause the check engine
light in the instrument cluster to
illuminate.
 When using an automatic car wash
or a high water pressure car wash,
make sure that the fuel lid is closed
and lock the doors. Otherwise, the
fuel lid may open unexpectedly and
become damaged.
 (U.S.A. and Canada)
If the check fuel cap warning light
illuminates, the fuel-filler cap may
not be properly installed. If the
warning light illuminates, park your
vehicle safely off the right-of-way,
remove the fuel-filler cap and
reinstall it correctly. After the cap has
been correctly installed, the fuel cap
warning light may continue to
illuminate until a number of driving
cycles have been completed. A drive
cycle consists of starting the engine
(after four or more hours with the
engine off) and driving the vehicle on
city and highway roads. Continuing
to drive with the check fuel cap
warning light illuminated could cause
the check engine light to illuminate
as well.Refueling
1. Close all the doors, windows, and
the liftgate.
2. Switch the vehicle power OFF.
3. Press the fuel-filler lid opener switch.
“Preparing for Refuelling” is
displayed in the instrument cluster.
4. Make sure that the indication in the instrument cluster changes to
“Ready to Refuel”.
5. Unlock the driver's door.
6. Press the fuel-filler lid.
The fuel-filler lid opens.
Driving
Refueling
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Fuel Requirements
Vehicles with catalytic converters or oxygen sensors must use ONLY UNLEADED
FUEL, which will reduce exhaust emissions and keep spark plug fouling to a
minimum.

To achieve maximum engine performance, use the specified fuel.
Fuel
Octane Rating*1 (Anti-knock index)
Premium unleaded fuel 91 [(R+M)/2 method] or above (96 RON or above)
Regular unleaded fuel with an octane rati ng from 87 to 90 (91 to 95 RON) can be
used, but this will reduce performance slightly, such as reduced engine output, and
engine knocking.
Fuel with a rating lower than 87 octane (91 RON) will negatively affect the emission
control system performance and could al so cause engine knocking and serious
engine damage.
*1 U.S. federal law requires that octane ratings be posted on gas station pumps.
CAUTION
 USE ONLY UNLEADED FUEL.
Leaded fuel is harmful to the catalytic converter and oxygen sensors and will lead
to deterioration of the emission control system and or failures.
 This vehicle can only use oxygenated fuels containing no more than 10 % ethanol
by volume. Damage to the vehicle may occur when ethanol exceeds this
recommendation, or if the gasoline cont ains any methanol. Stop using gasohol of
any kind if your vehicle engine is performing poorly.
 Never add fuel system additives other than a Mazda genuine product, otherwise
the emission control system could be damaged. Consult an Authorized Mazda
Dealer for details.
Gasoline blended with oxygenates such as alcohol or ether compounds are generally
referred to as oxygenated fuels. The comm on gasoline blend that can be used with
your vehicle is ethanol blended at no more than 10 %. Gasoline containing alcohol,
such as ethanol or methanol, may be marketed under the name "Gasohol".

Vehicle damage and drivability problems resulting from the use of the following may
not be covered by the warranty.
Gasohol containing more than 10 % ethanol.Gasoline or gasohol containing methanol.Leaded fuel or leaded gasohol.
Driving
Refueling
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Warnings and Cautionsfor Using the FuelRequirements
CAUTION
 USE ONLY UNLEADED FUEL.
Leaded fuel is harmful to the catalytic
converter and oxygen sensors and
will lead to deterioration of the
emission control system and or
failures.
 This vehicle can only use oxygenated
fuels containing no more than 10 %
ethanol by volume. Damage to the
vehicle may occur when ethanol
exceeds this recommendation, or if
the gasoline contains any methanol.
Stop using gasohol of any kind if your
vehicle engine is performing poorly.
 Never add fuel system additives
other than a Mazda genuine
product, otherwise the emission
control system could be damaged.
Consult an Authorized Mazda Dealer
for details.
Emission Control System
This vehicle is equipped with an
emission control system (the catalytic
converter is part of this system) that
enables the vehicle to comply with
existing exhaust emissions
requirements.
NOTE
Under U.S. federal law, any
modification to the
original-equipment emission control
system before the first sale and
registration of a vehicle is subject to
penalties. In some states, such modification made on a used vehicle
is also subject to penalties.
While the engine is off, the sound of
a valve opening and closing can be
heard at the rear of the vehicle,
however this does not indicate an
abnormality. The vehicle has a
self-checking device and it operates
while the engine is off.
Driving
Refueling
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Warnings and Cautionsfor Using the Emission Control System
WARNING
Never park over or near anything
flammable.
Parking over or near anything
flammable, such as dry grass, is
dangerous. Even with the engine
turned off, the exhaust system remains
very hot after normal use and could
ignite anything flammable. A resulting
fire could cause serious injury or death.
CAUTION
Ignoring the following precautions
could cause lead to accumulate on the
catalyst inside the converter or cause
the converter to get very hot. Either
condition will dama
ge the converter
and cause poor performance.
 USE ONLY UNLEADED FUEL.
 Do not drive your Mazda with any
sign of engine malfunction.
 Do not coast if the vehicle power is
switched OFF.
 Do not descend steep grades in gear
if the vehicle power is switched OFF.
 Do not operate the engine at high
idle for more than 2 minutes.
 Do not tamper with the emission
control system. All inspections and
adjustments must be made by a
qualified technician.
 Do not push-start or pull-start this
vehicle.
Warnings and Cautions
for Engine Exhaust
(Carbon monoxide)
WARNING
Do not drive your vehicle if you smell
exhaust gas inside the vehicle:
Engine exhaust gas is dangerous. This
gas contains carbon monoxide (CO),
which is colorless, odorless, and
poisonous. When inhaled, it can cause
loss of consciousness and death. If you
smell exhaust gas inside the vehicle,
keep all windows fully open and
contact an Authorized Mazda Dealer
immediately.
Do not run the engine when inside an
enclosed area:
Running the engine inside an enclosed
area, such as a garage, is dangerous.
Exhaust gas, which contains poisonous
carbon monoxide, could easily enter
the cabin. Loss of consciousness or
even death could occur.
Open the windows or adjust the
heating or cooling system to draw
fresh air when idling the engine:
Exhaust gas is dangerous. When the
vehicle is stopped with the windows
closed and the engine running for a
long time even in an open area,
exhaust gas, which contains poisonous
carbon monoxide, could enter the
cabin. Loss of consciousness or even
death could occur.
Driving
Refueling
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