2021 MAZDA MODEL CX-9 wheel size

Do not apply a strong force to an ultrasonic sensor (rear):
When washing the vehicle, do not spray highly pressurized water against an ultrasonic sensor
(rear), or rub it strongly. In addition, do not hit the rear bumper forcefully when loading and
unloading cargo Otherwise, the sensors may no t detect obstructions correctly which could
cause the SCBS R system to not operate no rmally, or it could operate unnecessarily.
CAUTION
When driving off-road in areas where there is gr ass or foliage, it is recommended that the
SCBS R system be turned off.
 Always use tires of the specified size and th e same manufacturer, brand, and tread pattern
on all 4 wheels. In addition, do not use tires with significantly different wear patterns on the
same vehicle. Otherwise, the SCBS R system may not operate normally.
 If ice or snow is stuck on the ultrasonic sensors (rear) they may not be able to detect
obstructions correctly depending on the conditions. In such cases, the system may not be
able to perform controls correctly. Always dr ive carefully and pay attention to the rear of
the vehicle.
NOTE
The vehicle posture changes depending on the accelerator pedal, brake pedal and
steering wheel operations, which could make it difficult for the system to recognize an
obstruction, or it could facilitate unnecessary detection. In such cases, the SCBS R may or
may not operate.
The SCBS R system will operate under the following conditions.
The engine is running.
The selector lever is in the R (reverse) position.
“Reverse Smart City Brake Support Malfunction” is not displayed in the
multi-information display.
The vehicle speed is between about 2 to 8 km/h (2 to 4 mph).
The SCBS R is not turned off.
The DSC is not malfunctioning.
The SCBS R operates using ultrasonic sensors (rear) which detect obstructions at the rear
by emitting ultrasonic waves and then receiving the returning waves reflected off the
obstructions.
In the following cases, the ultrasonic sensors (rear) cannot detect obstructions and the
SCBS R may not operate.
The height of the obstruction is low such as low walls or trucks with low loading
platforms.
The height of the obstruction is high such as trucks with high loading platforms.
When Driving
i-ACTIVSENSE
4-176
CX-9_8JK1-EA-20G_Edition6_old 2021-12-8 9:30:44

Icy or snow-covered roads.
 Tire chains or a temporary spare tire is installed.
 The front or rear doors are not fully closed.
 The vehicle is on a road incline.
 The door mirrors are retracted.
 Do not hit the front/rear camera, front bumper, liftgate, and door mirrors forcefully. The
camera position or installation angle may shift.
 The cameras are waterproof. Do not disassemble, modify, or remove a camera.
 The camera cover is made of hard plastic, therefore do not apply oil film remover, organic
solvents, wax, or coating agents. If any such agent gets on the camera cover, wipe it off
using a soft cloth immediately.
 Do not rub the camera lens forcefully, or clean it with an abrasive or hard brush. Otherwise,
it could scratch the camera lens and negatively
affect the images.
 Consult an Authorized Mazda Dealer for repair, painting, or replacement of the front/rear
camera, front bumper, liftgate and door mirrors.
 Heed the following cautions to assure that the 360°View Monitor operates normally.
 Do not modify the vehicle suspensions or lower/raise the vehicle body, or both.
 Always use tires of the specified type and size for the front and rear wheels. Consult an
Authorized Mazda Dealer for tire replacement.
 When the display is cold, images may leave trai ls or the screen might be darker than usual,
making it difficult to check the vehicle surroundings. Always
confirm the safety at the front
and around the vehicle visually when driving.
 The method for parking/stopping the vehicle using the 360°View Monitor differs depending
on the road circumstances/conditions and th e vehicle conditions. When and how much you
turn the steering wheel will differ depending on the situation, , therefore always check the
vehicle surroundings directly with yo ur eyes while using the system.
Also, before using the system, always make sure that the vehicle can be parked/stopped in
the parking/stopping space.
NOTE
If there are water droplets, snow, or mud on the camera lens, wipe it off using a soft cloth.
If the camera lens is especially dirt y, wash it off with mild detergent.
If the camera lens is touched or there is any dirt on it, it could affect the screen image.
Wipe the lens using a soft cloth.
If the area where the camera is installed, such as the front bumper, liftgate or door
mirrors, has been damaged in a vehicle accide nt, the camera (position, installation angle)
may have shifted. Always consult an Authorized Mazda Dealer to have the vehicle
inspected.
When Driving
i-ACTIVSENSE
4-209
CX-9_8JK1-EA-20G_Edition6_old 2021-12-8 9:30:44

The direction in which the Forward Sensing Camera (FSC) is pointed has been
finely
adjusted. Do not change the installation position of the Forward Sensing Camera (FSC) or
remove it. Otherwise, it could result in damage or malfunction.
 Always use tires for all wheels that are of the specified size, and the same manufacturer,
brand, and tread pattern. In addition, do no t use tires with significantly different wear
patterns on the same vehicle as the system may not operate normally.
 The Forward Sensing Camera (FSC) includes a function for detecting a soiled windshield
and informing the driver, however, depending on the conditions, it may not detect plastic
shopping bags, ice or snow on the windshield . In such cases, the system cannot accurately
determine a vehicle ahead and may not be able to operate normally. Always drive carefully
and pay attention to the road ahead.
NOTE
In the following cases, the Forward Sensing Camera (FSC) cannot detect target objects
correctly, and each system may be unable to operate normally.
The height of the vehicle ahead is low.
You drive your vehicle at the same speed as the vehicle ahead.
Headlights are not turned on during the night or when going through a tunnel.
In the following cases, the Forward Sensing Camera (FSC) may not be able to detect
target objects correctly.
Under bad weather condition, such as rain, fog and snow.
The window washer is being used or the windshield wipers are not used when it's
raining.
Ice, fog, snow, frost, rainfall, dirt, or foreign matter such as a plastic bag is stuck on the
windshield.
Trucks with low loading platforms and vehicl es with an extremely low or high profile.
When driving next to walls with no patterning (including fences and longitudinally
striped walls).
The taillights of the vehicle ahead are turned off.
A vehicle is outside the illumi nation range of the headlights.
The vehicle is making a sharp turn, or ascending or descending a steep slope.
Entering or exiting a tunnel.
Heavy luggage is loaded causing the vehicle to tilt.
Strong light is shone at the front of the vehicle (back light or high-beam light from
on-coming vehicles).
There are many light emitters on the vehicle ahead.
When the vehicle ahead is not equipped with taillights or the taillights are turned off at
nighttime.
Elongated luggage or cargo is loaded onto installed roof rails and covers the Forward
Sensing Camera (FSC).
When Driving
i-ACTIVSENSE
4-237
CX-9_8JK1-EA-20G_Edition6_old 2021-12-8 9:30:44

Do not use the front bumper to push other vehicles or obstructions such as when pulling
out of a parking space. Otherwise, the radar sensor (front) could be hit and its position
deviated.
 Do not remove, disassemble, or mo dify the radar sensor (front).
 For repairs, replacement or paint work ar ound the radar sensor (front), consult an
Authorized Mazda Dealer.
 Do not modify the suspension. If the suspensi on are modified, the vehicle's posture could
change and the radar sensor (front) may not be able to correctly detect a vehicle ahead or
an obstruction.
NOTE
Under the following conditions, the radar sensor (front) may not be able to detect vehicles
ahead or obstructions correctly and each system may not operate normally.
The rear surface of a vehicle ahead does not reflect radio waves effectively, such as an
unloaded trailer or an automobile with a loading platform covered by a soft top,
vehicles with a hard plastic tailgate, and round-shaped vehicles.
Vehicles ahead with low vehicle height and thus less area for reflecting radio waves.
Visibility is reduced due to a vehicle ahead casting off water, snow, or sand from its tires
and onto your windshield.
The luggage compartment is loaded with heavy objects or the rear passenger seats are
occupied.
Ice, snow, or soiling is on the front surface of the front emblem.
During inclement weather such as rain, snow, or sand storms.
When driving near facilities or objects emitting strong radio waves.
Under the following conditions, the radar sensor (front) may not be able to detect vehicles
ahead or obstructions.
The beginning and end of a curve.
Roads with continuous curves.
Narrow lane roads due to road construction or lane closures.
The vehicle ahead enters the radar sensor's blind spot.
The vehicle ahead is running abnormally due to accident or vehicle damage.
Roads with repeated up and down slopes
Driving on poor roads or unpaved roads.
The distance between your vehicle and the vehicle ahead is extremely short.
A vehicle suddenly comes close such as by cutting into the lane.
To prevent incorrect operation of the system, use tires of the same specified size,
manufacturer, brand, and tread pattern on all four wheels. In addition, do not use tires
with significantly different wear patterns or tire pressures on the same vehicle (Including
the temporary spare tire).
If the battery power is weak, the system may not operate correctly.
When Driving
i-ACTIVSENSE
4-241
CX-9_8JK1-EA-20G_Edition6_old 2021-12-8 9:30:44

Tire Pressure Monitoring System
The Tire Pressure Monitoring System (TPMS) monitors the pressure for each tire.
If tire pressure is too low in one or more tires, the system will inform the driver via the
warning light in the instrument cluster and by the warning beep sound.
Refer to Contact Authorized Mazda Dealer and Have Vehicle Inspected on page 7-31.
Refer to Taking Action on page 7-37.
Refer to Tire Inflation Pressure Warning Beep on page 7-50.

The tire pressure sensors installed on each wheel send tire pressure data by radio signal to
the receiver unit in the vehicle.
Tire pressure sensors
NOTE
When the ambient temperature is low due to seasonal changes, tire temperatures are also
lower. When the tire temperature decreases, the air pressure decreases as well. The TPMS
warning light may illumina te more frequently. Visually inspect the tires daily before driving,
and check tire pressures monthly with a tire pressure gauge. When checking tire pressures,
use of a digital tire pressure gauge is recommended.

TPMS does not alleviate your need to check the pressure and condition of all four tires
regularly.
CAUTION
 Each tire, including the spare (if provided), should be checked monthly when cold and
inflated to the inflation pressure recommended by the vehicle manufacturer on the vehicle
placard or tire inflation pressure label. (If your vehicle has tires of a different size than the
size indicated on the vehicle placard or tire inflation pressure label, you should determine
the proper tire inflation pressure for those tires.)
When Driving
Tire Pressure Monitoring System
4-252
CX-9_8JK1-EA-20G_Edition6_old 2021-12-8 9:30:44

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.
Tires
For reasons of proper performance, safety,
and better fuel economy, always maintain
recommended tire inflation pressures and
stay within the recommended load limits
and weight distribution.
WA R N I N G
Using Different Tire Types:
Driving your vehicle with different types of
tires is dangerous. It could cause poor
handling and poor braking; leading to loss
of control.
Except for the limited use of the temporary
spare tire, use only the same type tires
(radial, bias-belted, bias-type) on all four
wheels.
Using Wrong-Sized Tires:
Using any other tire size than what is
specified for the vehicle (page 9-7) is
dangerous. It could seriously affect ride,
handling, ground clearance, tire clearance,
and speedometer calibration. This could
cause you to have an accident. Use only
tires that are the correct size specified for
the vehicle.
▼ Tire Inflation Pressure
WA R N I N G
Always inflate the tires to the correct
pressure:
Overinflation or underinflation of tires is
dangerous. Adverse handling or
unexpected tire failure could result in a
serious accident.
Refer to Tires on page 9-7.
Maintenance and Care
Owner Maintenance
6-34
CX-9_8JK1-EA-20G_Edition6_old
2021-12-8 9:30:44

tire. This tire should be used only for an
emergency and only for a short distance.

Use the temporary spare tire only until the
conventional tire is repaired, which should
be as soon as possible.
Refer to Tires on page 9-7.

CAUTION
Do not use your temporary spare tire rim
with a snow tire or a conventional tire.
Neither will properly fit and could
damage both tire and rim.
 The temporary spare tire has a tread life
of less than 5,000 km (3,000 miles). The
tread life may be shorter depending on
driving conditions.
 The temporary spare tire is for limited
use, however, if the tread wear
solid-band indicator appears, replace the
tire with the same type of temporary
spare (page 6-36).
NOTE
Tires degrade over time, even when they
are not being used on the road. It is
recommended that tires generally be
replaced when they are 6 years or older.
Heat caused by hot climates or frequent
high loading conditions can accelerate the
aging process. You should replace the
spare tire when you replace the other road
tires due to the aging of the spare tire. The
period in which the tire was manufactured
(both week and year) is indicated by a
4-digit number.
Refer to Tire Labeling on page 8-25.
▼ Replacing a Wheel
WA R N I N G
Always use wheels of the correct size on
your vehicle:
Using a wrong-sized wheel is dangerous.
Braking and handling could be
affected,
leading to loss of control and an accident.
CAUTION
A wrong-sized wheel may adversely affect:
 Tire fit
 Wheel and bearing life
 Ground clearance
 Snow-chain clearance
 Speedometer calibration
 Headlight aim
 Bumper height
 Tire Pressure Monitoring System
*
NOTE
When replacing a wheel, make sure the
new one is the same as the original
factory wheel in diameter, rim width,
and offset (inset/outset).
For details, contact an Authorized
Mazda Dealer.

Proper tire balancing provides the best
riding comfort and helps reduce tread
wear. Out-of-balance tires can cause
vibration and uneven wear, such as
cupping and flat spots.
Maintenance and Care
Owner Maintenance
*Some models.6-37
CX-9_8JK1-EA-20G_Edition6_old 2021-12-8 9:30:44

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 th at 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.
2. Shift into Park (P ) and turn off the
engine.
3. Turn on the hazard warning flasher.
4. Have passengers get out of the vehicle and away from the vehicle and traffic.
5. Remove any luggage, the jack, tools, and spare tire (page 7-3).
6. Block the wheel diagonally opposite the flat tire. When blocking a wheel,
place a tire block both in front and
behind the tire.
NOTE
When blocking a tire, use rocks or
wood blocks of sufficient size if
possible to hold the tire in place.
▼Removing a Flat Tire
WA R N I N G
When jacking-up a vehicle, always shift the
selector lever to P, apply the parking brake,
and place wheel blocks in the position
diagonally opposed to the jack:
Changing a
flat tire without using wheel
blocks is dangerous because the vehicle
may move and fall off the jack even with
the select lever is in P, which could result in
an accident.
If Trouble Arises
Flat Tire
7-9
CX-9_8JK1-EA-20G_Edition6_old 2021-12-8 9:30:44