Page 467 of 595

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.
Light Bulbs
▼Light Bulbs
Front
1. Vanity mirror lights*
2. Front overhead lights/Front map
lights
3. Side turn signal lights
*
4. Front side-marker lights
5. Front turn signal lights/Parking lights
6. Headlights (High/Low beam)/
Daytime running lights
Rear
1. Luggage compartment light
2. High-mount brake light
3. Rear overhead light
4. Rear side-marker lights
5. Taillights
*
6. Rear turn signal lights
7. Brake lights/Taillights
8. Taillights (Liftgate side)
*
9. Reverse lights
10.License plate lights
Maintenance and Care
Owner Maintenance
6-34*Some models.
CX-30_8KN2-EA-21L_Edition1_new 2021-9-15 19:39:56
Page 469 of 595

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
6-36
CX-30_8KN2-EA-21L_Edition1_new 2021-9-15 19:39:56
Page 472 of 595

No.FUSE RAT-
ING PROTECTED COMPONENT
F8 15 A Engine control system
F9 15 A Transmission control system
F10 15 A Engine control system
F11 7.5 A Air conditioner
F12 15 A Engine control system
F13 ――
F14 20 A
Front seat warmer
*
F15 ――
F16 15 A For protection of various circuits
F17 ――
F18 15 A For protection of various circuits
F19 60 A Power steering system
F20 15 A Headlight (LH) 1
F21 15 A Headlight (RH) 1
F22 15 A Keyless system
F23 30 A ABS, Dynamic stability control system
F24 15 A Headlight (LH) 2
F25 15 A Headlight (RH) 2
F26 7.5 A On board diagnostics
F27 25 A For protection of various circuits
F28 25 A For protection of various circuits
F29 15 A Windshield washer
F30 15 A Accessory sockets
F31 15 A Horn
F32 15 A Headlights
F33 ――
F34 ――
F35 50A ABS, Dynamic stability control system
F36 ――
F37 40 A Rear window defogger
F38 50 A For protection of various circuits
F39 ――
F40 40 A Air conditioner
Maintenance and Care
Owner Maintenance
*Some models.6-39
CX-30_8KN2-EA-21L_Edition1_new 2021-9-15 19:39:56
Page 499 of 595

Route the jumper cables away from parts that will be moving:
Connecting a jumper cable near or to moving parts (cooling fans, belts) is
dangerous. The cable could get caught when the engine starts and cause serious
injury.
CAUTION
Use only a 12 V booster system. You can dama ge a 12 V starter, ignition system, and
other electrical parts beyond repair with a 24 V power supply (two 12 V batteries in
series or a 24 V motor generator set).
NOTE
Do not use vehicles with M Hybrid as a booster vehicle.
1. Move the booster vehicle so that its battery is as close as possible to your
vehicle's battery.
2. Make sure that the power such as for th e headlights and air conditioner is turned
off.
3. Remove the battery cover.
4. Turn off the booster vehicle's engine and connect the jumper cables in the
following order.
Make sure that the jumper cables are se curely connected so that they do not
disconnect due to engine vibrations.
1st lead
Positive (+) terminal on the discharged battery
Positive (+) terminal on booster vehicle's battery
2nd lead
Negative (-) terminal on booster vehicle's battery
If Trouble Arises
Battery Runs Out
7-14
CX-30_8KN2-EA-21L_Edition1_new 2021-9-15 19:39:56
Page 589 of 595

Index
Hazard warning.................... 4-66
Headlights............................4-53
Flat Tire Changing a flat tire................. 7-5
Mounting the spare tire........ 7-10
Removing a flat tire................ 7-6
Floor Mat................................. 3-52
Fluids Brake................................... 6-20
Classification .......................... 9-4
Washer................................ 6-20
Foot Brake................................ 4-72
Forward Sensing Camera (FSC) ..........
.............................................. 4-197
Front Camera/Side Cameras/Rear
Camera.................................. 4-206
Front Cross Tra ffi c Alert (FCTA) ..........
.............................................. 4-121
Front Cross Tra ffi c Alert (FCTA)
Warning Beep........................... 7-42
Front Radar Sensor.................. 4-201
Front Side Radar Sensor........... 4-203
Fuel Filler lid and cap...................3-32
Requirements....................... 3-30
Tank capacity......................... 9-5
Fuses........................................ 6-35 Panel description.................. 6-38
Replacement........................ 6-35
G
Gauges..................................... 4-18
Glove Compartment..................5-46
H
Hazardous Driving.....................3-51
Hazard Warning Flasher............. 4-66
HeadlightsComing home light...............4-56
Flashing................................4-56
High-low beam.................... 4-56
Leaving home light............... 4-57
Leveling................................4-57
Head Restraint.......................... 2-16
High Beam Control System
(HBC)..................................... 4-100 High Beam Control System (HBC)
indicator light (green)......... 4-101
Hill Launch Assist (HLA)............. 4-82
HomeLink Wireless Control
System...................................... 4-66
Hood Release........................... 6-12
Horn........................................ 4-65
I
If a Warning Light Turns On or
Flashes......................................7-22
If the Active Driving Display Does Not
Operate.................................... 7-45
Ignition Not Switched Off (STOP)
Warning Beep........................... 7-39
Ignition Switch............................ 4-4
Illuminated Entry System............ 5-41
Immobilizer System................... 3-46
Inspecting Brake Fl uid Level........6-20
Inspecting Coolan t Level............ 6-18
Inspecting Engine Oil Level.........6-17
Inspecting Washer Fluid Level..... 6-20
Instrument Cluster..................... 4-18 Average fuel economy...........4-25
Compass display.................. 4-27
Current fuel economy........... 4-26
Dashboard illumination........ 4-24
Deceleration regeneration charge
display................................. 4-26
Distance-to-empty................4-25
Engine coolant temperature
gauge...................................4-22
Fuel gauge........................... 4-23
Indication/indicator lights..... 4-31
10-4
CX-30_8KN2-EA-21L_Edition1_new 2021-9-15 19:39:56