Page 389 of 508
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Engine Compartment Overview
Power steering fluid reservoir
Power steering fluid reservoir
Windshield washer fluid reservoir
Windshield washer fluid reservoir
Engine coolant reservoir Fuse block
Engine coolant reservoir
Engine oil-filler cap
Engine oil-filler capEngine oil dipstick
Brake/Clutch fluid reservoir
Brake/Clutch fluid reservoir
Battery
Battery
Fuse block
Automatic transaxle fluid-level dipstick
(Only for automatic transaxle)
2.0-liter and 2.5-liter engine
2.3-liter turbocharged engine
Engine oil dipstick
Maintenance and Care
Owner Maintenance
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Form No.8BM5-EA-10F
Page 396 of 508

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Power Steering Fluid
qInspecting Power Steering Fluid
Level
CAUTION
To avoid damage to the power
steering pump, don't operate the
vehicle for long periods when the
power steering fluid level is low.
NOTE
Use specified power steering fluid (page 10-4).
Inspect the fluid level in the reservoir at
each engine oil change with the engine off
and cold. Add fluid if necessary; it does
not require periodic changing.
The level must be kept between MIN and
MAX.
Visually examine the lines and hoses for
leaks and damage.
If new fluid is required frequently, consult
an Authorized Mazda Dealer.
Automatic Transaxle Fluid
(ATF)
í
qInspecting Automatic Transaxle
Fluid Level
The automatic transaxle fluid level should
be inspected regularly. Measure it as
described below.
CAUTION
ØAlways check the automatic
transaxle fluid level according to
the following procedure. If the
procedure is not done correctly,
the automatic transaxle fluid level
cannot be measured accurately
which could lead to automatic
transaxle damage.
ØA low fluid level can cause
transaxle slippage. Overfilling can
cause foaming, loss of fluid, and
transaxle malfunction.
ØIt is recommended to use Mazda
Genuine automatic transaxle fluid
(page 10-4).
1. Park on a level surface and set the
parking brake firmly.
2. Make sure there is no ATF leakage
from the ATF hose or the housing.
3. Shift the shift lever to the park position
(P), start the engine and warm it up.
CAUTION
Do not shift the shift lever while the
engine is warming up. If the ATF level
is extremely low, the automatic
transaxle could be damaged.
8-24
Maintenance and Care
íSome models.
Owner Maintenance
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Form No.8BM5-EA-10F
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CAUTION
Limited-Slip Differential system;
don't use the following:
ØTires not of the designated size
ØTires of different sizes or types at
the same time
ØTires not sufficiently inflated
If these instructions aren't followed,
the rotation of the left and right
wheels will be different and will thus
apply a constant load on the limited-
slip differential.
This will cause a malfunction.
qReplacing a Tire
WARNING
Always use tires that are in good
condition:
Driving with worn tires is dangerous.
Reduced braking, steering, and
traction could result in an accident.
Replace all four tires at the same time:
Replacing just one tire is dangerous.
It could cause poor handling and
poor braking resulting in loss of
vehicle control. Mazda strongly
recommends that you replace all four
tires at the same time.
CAUTION
(With Tire Pressure Monitoring
System)
When replacing/repairing the tires or
wheels or both, have the work done
by an Authorized Mazda Dealer, or
the tire pressure sensors may be
damaged.NOTE
(With Tire Pressure Monitoring System)lWhen tires with steel wire reinforcement in
the sidewalls are used, the system may not
function correctly even with a genuine
wheel.
Refer to System Error Activation on page
5-34.
lBe sure to install the tire pressure sensors
whenever tires or wheels are replaced.
Refer to Tires and Wheels on page 5-34.
If a tire wears evenly, a wear indicator
will appear as a solid band across the
tread.
Replace the tire when this happens.
New treadTread wear indicator
Worn tread
You should replace the tire before the
band crosses the entire tread.
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 The tire labeling on page 9-23.
8-38
Maintenance and Care
Owner Maintenance
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Form No.8BM5-EA-10F
Page 416 of 508

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2. Disconnect the electrical connector
from the bulb by pressing the tab on
the connector with your finger and
pulling the connector downward.
3. Turn the socket and bulb assembly to
remove it. Carefully remove the bulb
from its socket in the reflector by
gently pulling it straight backward out
of the socket.
4. Install the new bulb in the reverse order
of the removal procedure.
Front turn signal lights/Front side-
marker lights/Parking lights (Canada)
1. Make sure the ignition switch is turned
off and the headlight switch is off.2. If you are changing the right bulb, start
the engine, turn the steering wheel all
the way to the left, and turn off engine.
If you are changing the left bulb, turn
the steering wheel to the right.
3. Turn the center section of the plastic
retainer counterclockwise and remove
the retainers and partially peel back the
mudguard.
Installation Removal
4. Turn the socket and bulb assembly
counterclockwise and remove it.
8-44
Maintenance and Care
Owner Maintenance
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Form No.8BM5-EA-10F
Page 418 of 508

Black plate (418,1)
3. Turn the socket and bulb assembly to
remove it. Carefully remove the bulb
from its socket in the reflector by
gently pulling it straight backward out
of the socket.
4. Install the new bulb in the reverse order
of the removal procedure.
Front turn signal lights/Front side-
marker lights/Parking lights
1. Make sure the ignition is switched off
and the headlight switch is off.
2. If you are changing the right bulb, start
the engine, turn the steering wheel all
the way to the left, and turn off engine.
If you are changing the left bulb, turn
the steering wheel to the right.3. Turn the center section of the plastic
retainer counterclockwise and remove
the retainers and partially peel back the
mudguard.
Installation Removal
4. Turn the socket and bulb assembly
counterclockwise and remove it.
5. Disconnect the bulb from the socket.
8-46
Maintenance and Care
Owner Maintenance
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Form No.8BM5-EA-10F
Page 429 of 508
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DESCRIPTIONFUSE
RATINGPROTECTED COMPONENT
18 INJ 30 A Injector
í
19 R.DEF 30 A Rear window defroster
20 IGKEY 2 40 A For protection of various circuits
21 IGKEY 1 40 A For protection of various circuits
22 HORN 15 A Horn
23 STOP 15 A Brake lights
24
10A Engine control system
25 FUEL PUMP 25 A Fuel system
26 ABS 40 A ABS
27 SEAT WARM 20 A Seat warmer
í
28 EHPAS 80 A Electro-Hydraulic Power Assist Steering
29―― ―
30 ABS IG 7.5 A ABS
31 SWS 7.5 A Air bag
32 H/L LO RH 15 A Headlight low beam (RH)
33 H/L LO LH 15 A Headlight low beam (LH)
34 ILLUM 7.5 A Dashboard illumination
35 TAIL 15 A Taillights
36 ENG INJ 15 A Engine control system
37 ENG BAR 15 A PCM
38 ENG BAR 2 20 A PCM
39 ETV 15 A Electric throttle valve
Maintenance and Care
Owner Maintenance
8-57íSome models. Mazda3_8BM5-EA-10F_Edition2 Page429
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Form No.8BM5-EA-10F
Page 473 of 508

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CAUTION
Rotate unidirectional tires and radial tires that have an asymmetrical tread pattern
or studs only from front to rear, not from side to side. Tire performance will be
weakened if rotated from side to side.
(With limited-slip differential)
Don't use the following:
ØTires not of the designated size
ØTires of different sizes or types at the same time
ØTires not sufficiently inflated
If these instructions aren't followed, the rotation of the left and right wheels will be
different and will thus apply a constant load on the limited-slip differential.
This will cause a malfunction.
qReplacing a Tire
WARNING
Always use tires that are in good condition:
Driving with worn tires is dangerous. Reduced braking, steering, and traction could
result in an accident.
If a tire wears evenly, a wear indicator will appear as a solid band across the tread.
Replace the tire when this happens.
New treadTread wear indicator
Worn tread
You should replace the tire before the band crosses the entire tread.
Customer Information
Tire Information (U.S.A.)
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Form No.8BM5-EA-10F
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Vehicle Loading
WARNING
Do not tow a trailer with this vehicle:
Towing a trailer with this vehicle is dangerous because it has not been designed to
tow a trailer and doing so will affect the drive system which could result in vehicle
damage.
This section will guide you in the proper loading of your vehicle, to keep your loaded
vehicle weight within its design rating capability. Properly loading your vehicle will
provide maximum return of vehicle design performance. Before loading your vehicle,
familiarize yourself with the following terms for determining your vehicle's weight ratings,
from the vehicle's Safety Certification Label and Tire and Load Information Label:
WARNING
Overloaded Vehicle:
Overloading a vehicle is dangerous. The results of overloading can have serious
consequences in terms of passenger safety. Too much weight on a vehicle's
suspension system can cause spring or shock absorber failure, brake failure,
handling or steering problems, irregular tire wear, tire failure or other damage.
Overloading makes a vehicle harder to drive and control. It also increases the
distance required for stopping. In cases of serious overloading, brakes can fail
completely, particularly on steep grades. The load a tire will carry safely is a
combination of the size of the tire, its load range, and corresponding inflation
pressure.
Never overload the vehicle and always observe the vehicle's weight ratings from the
vehicle's Safety Certification and Tire and Load Information labels.
Customer Information
Tire Information (U.S.A.)
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Form No.8BM5-EA-10F