maintenance SUBARU BRZ 2022 Service Manual

Tires and Wheels
363
Maintenance and Service11
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■
Wheel Balance
Each wheel was correctly balanced
when your vehicle was new, but the
wheels will become unbalanced as
the tires become worn during use.
Wheel imbalance causes the
steering wheel to vibrate slightly at
certain vehicle speeds and detracts
from the vehicle’s straight-line
stability. It can also cause steering
and suspension system problems
and abnormal tire wear. If you
suspect that the wheels are not
correctly balanced, have them
checked and adjusted by your
SUBARU dealer. Also have them
adjusted after tire repairs and after
tire rotation.
NOTEThe suspension system is
designed to hold each wheel at a
certain alignment (relative to the
other wheels and to the road) for
optimum straight-line stability
and cornering performance.■
Wear Indicators1) New tread
2) Worn tread3)
Tread wear indicator
Each tire incorporates a tread wear
indicator, which becomes visible
when the depth of the tread grooves
decreases to 0.063 in (1.6 mm). A tire must be replaced when the
tread wear indicator appears as a
solid band across the tread.
NOTEFor safety, inspect the tire tread
regularly and replace the tires
before their tread wear indicators
become visible.
CAUTION
Loss of correct wheel align-
ment causes the tires to wear
on one side and reduces the
vehicle’s running stability.
Contact your SUBARU dealer
if you notice abnormal tire
wear.
12
3
B00327
WARNING
When a tire’s tread wear indi-
cator becomes visible, the tire
is worn beyond the accept-
able limit and must be
replaced immediately. With a
tire in this condition, driving at
high speeds in wet weather
can cause the vehicle to
hydroplane. The resulting loss
of vehicle control can lead to
an accident.
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Tires and Wheels
364■
Rotational Direction of TiresExample of rotational direction
marked on the sidewall
1) Front
If the tires have specific rotational
direction, refer to the arrow marked
on the side wall.
The arrow should be pointing
forward direction when the wheels
are fitted.
■
Tire RotationVehicles equipped with 4
nonunidirectional tires
1) Front Vehicles equipped with unidi-
rectional tires
1) Front
Tire wear varies from wheel to
wheel. Move the tires to the posi-
tions shown in the illustration each
time they are rotated. For the tire
rotation schedule, refer to the
“Warranty and Maintenance
Booklet”.
Replace any damaged or unevenly
worn tire at the time of rotation. After
tire rotation, adjust the tire pres-
sures and make sure the wheel nuts
are correctly tightened.
ROTATION
1
B00550
1
B00546
1
B00545
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Tires and Wheels
365
Maintenance and Service11
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After driving approximately 600
miles (1,000 km), check the wheel
nuts again and retighten any nut
that has become loose.■
Tire Replacement
The wheels and tires are important and
integral parts of your vehicle’s design;
they cannot be changed arbitrarily. The
tires fitted as standard equipment are opti-
mally matched to the characteristics of the
vehicle and were selected to give the best
possible combination of running perfor-
mance, ride comfort, and service life. It is
essential for every tire to have a size and
construction matching those shown on the
tire inflation pressure label and to have a
speed symbol and load index matching
those shown on the tire inflation pressure
label.
Using tires of a non-specified size detracts
from controllability, ride comfort, braking
performance, speedometer accuracy and
odometer accuracy. It also creates incor-
rect body-to-tire clearances and inappro-
priately changes the vehicle’s ground
clearance.
All four tires must be the same in terms of
manufacturer, brand (tread pattern),
construction, and size. You are advised to
replace the tires with new ones that are identical to those fitted as standard equip-
ment.
For safe vehicle operation, SUBARU
recommends replacing all four tires at the
same time.
■
Wheel Replacement
When replacing wheels due, for example,
to damage, make sure the replacement
wheels match the specifications of the
wheels that are fitted as standard equip-
ment. Replacement wheels are available
from SUBARU dealers.
WARNING

When replacing or installing
tire(s), all four tires must be the
same for the following items.
(a) Size(b) Speed symbol(c) Load index(d) Circumference(e) Construction(f) Manufacturer(g) Brand (tread pattern)(h) Degrees of wearFor items (a) to (c), you must
obey the specification that is
printed on the tire inflation pres-
sure label. The tire inflation pres-
sure label is located on the
driver’s center pillar.
If all four tires are not the same in
items (a) to (h), serious mechani-
cal damage could be caused to
the drivetrain of the car, and
affect the followings.- Ride- Handling- Braking- Speedometer/Odometer cali- bration- Clearance between the bodyand the tires
It also may be dangerous and
lead to loss of vehicle control,
and it can lead to an accident.
 Use only radial tires. Do not use
radial tires together with belted
bias tires and/or bias-ply tires.
Doing so can dangerously reduce
controllability, resulting in an
accident.
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Replacement of Wiper Blades
367
Maintenance and Service11
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If you fill the windshield washer tank with
a fluid with a different concentration from
the one used previously, purge the old
fluid from the piping between the wind-
shield washer tank and washer nozzles by
operating the washer for a certain period
of time. Otherwise, if the concentration of
the fluid remaining in the piping is too low
for the outside temperature, it may freeze
and block the nozzles.
11-24. Replacement of Wiper BladesGrease, wax, insects, or other materials
on the windshield or the wiper blade
results in jerky wiper operation and
streaking on the glass. If you cannot
remove the streaks after operating the
windshield washer or if the wiper opera-
tion is jerky, clean the outer surface of the
windshield (or rear window) and the wiper
blades using a sponge or soft cloth with a
neutral detergent or mild abrasive cleaner.
After cleaning, rinse the windshield and
wiper blades with clean water. The wind-
shield is clean if beads do not form when
you rinse the windshield with water.
CAUTION
Never use engine coolant as washer
fluid because it could cause paint
damage.
CAUTION
Adjust the washer fluid concen-
tration appropriately for the
outside temperature. If the
concentration is inappropriate,
sprayed washer fluid may freeze
on the windshield and obstruct
your view, and the fluid may
freeze in the windshield washer
tank.Be careful foreign matter does
not contaminate the washer fluid
when filling the tank. Contamina-
tion could cause malfunctions,
such as clogging the pump.
State or local regulations on vola-
tile organic compounds may
restrict the use of methanol, a
common windshield washer anti-
freeze additive. Washer fluids
containing non-methanol anti-
freeze agents should be used
only if they provide cold weather
protection without damaging
your vehicle’s paint, wiper blades
or washer system.
CAUTION
Do not clean the wiper blades
with gasoline or a solvent, such
as paint thinner or benzine. This
will cause deterioration of the
wiper blades.When you wish to raise the
passenger-side wiper arm, first
raise the driver-side wiper arm.
Otherwise, the passenger-side
wiper assembly and driver-side
wiper assembly will touch each
other, possibly resulting in
scratches.
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Replacement of Wiper Blades
369
Maintenance and Service11
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3. Remove the wiper blade assembly by
holding its pivot area and pushing it in the
direction shown by the arrow.
4. When installing the wiper blade
assembly, align it with the wiper arm
connection part and then slide it in the
opposite direction of removal to install.
After installing the wiper blade assembly,
close the lock cover and check that the
connection part is locked completely.
5. Hold the wiper arm by hand and slowly
lower it in position.
■
Windshield Wiper Blade
Rubber1) Support1. Grasp the locked end of the blade
rubber assembly and pull it firmly until the stoppers on the rubber are free of the
support.
1) Metal spines2. If the new blade rubber is not provided
with two metal spines
, remove the metal
spines from the old blade rubber and
install them in the new blade rubber.
B02113
1
B02114
B00504
1
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Fuses
371
Maintenance and Service11
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It is unnecessary to periodically check the
battery fluid level or periodically refill with
distilled water.
11-26. FusesNOTEFuse rating and using circuit are
described on the fuse box cover.
The fuses are designed to melt during an
overload to prevent damage to the wiring
harness and electrical equipment. The
fuses are located in two fuse boxes.
One is located under the instrument panel
behind the fuse box cover on the driver’s
seat side. To remove the cover, pull it out.
 To lessen the risk of sparks,
remove rings, metal watchbands,
and other metal jewelry. Never
allow metal tools to contact the
positive battery terminal and
anything connected to it WHILE
you are at the same time in
contact with any other metallic
portion of the vehicle because a
short circuit will result. Keep everyone including children
away from the battery.Charge the battery in a well-venti-
lated area.Battery posts, terminals, and
related accessories contain lead
and lead compounds, chemicals
known to the State of California to
cause cancer and reproductive
harm. Batteries also contain
other chemicals known to the
State of California to cause
cancer. Wash hands after
handling.
CAUTION
Never use more than 10 amperes
when charging the battery because
it will shorten battery life.
CAUTION
Never replace a fuse with one hav-
ing a higher rating or with material
other than a fuse because serious
damage or a fire could result.
B02117
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Installation of Accessories
373
Maintenance and Service11
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11-27. Installation of Acces-soriesAlways consult your SUBARU dealer
before installing fog lights or any other
electrical equipment in your vehicle. Such
accessories may cause the electronic
system to malfunction if they are incor-
rectly installed or if they are not suited for
the vehicle. We recommend that you
install only genuine SUBARU accessories
on your vehicle.
11-28. Replacing Bulbs
■
Headlights
The LED headlight warning light illumi-
nates if the LED headlights malfunction.
Have your vehicle inspected at a
SUBARU dealer as soon as possible.■
Backup Light
NOTE
 It may be difficult to replace the
bulbs. We recommend that you have
the bulbs replaced by your SUBARU
dealer if necessary.
 If a genuine SUBARU accessory has
been installed to the rear bumper,
check the manual included with the
accessory.
WARNING
Bulbs may become very hot while
illuminated. Before replacing bulbs,
turn off the lights and wait until the
bulbs cool down, Otherwise, there
is the risk of sustaining a burn
injury.
CAUTION
 Before replacing a backup light,
stop the engine and allow the
exhaust pipes and surrounding
parts to cool suffi ciently. As the
bulbs are near the exhaust pipes,
there is a risk of being burned. Replace any bulb only with a new
bulb of the specified wattage.
Using a bulb of different wattage
could result in a fire. For the spec-
ified wattage of each bulb, refer to
"Bulb Chart" 
P387. For replace-
ment, contact your SUBARU
dealer.
B02119
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Replacing Battery
375
Maintenance and Service11
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▼
Headlight aim adjustment1) Adjustment direction mark1. Turn the bolt A clockwise or
counterclockwise to adjust it. Remember
the direction of the rotation and number of
rotations.2. Turn bolt B the same number of turns
and in the same direction as step 1.
NOTE
If the headlight aim cannot be
adjusted, contact your SUBARU
dealer.
 To inspect of the headlight aim posi-
tion, consult a SUBARU dealer.
11-29. Replacing BatteryThe access key fob may be discharged
under the following conditions.
 The operation of the keyless access
function is unstable
 The operating distance of the remote
keyless entry system is unstable
 The transmitter does not operate prop-
erly when used within the standard
distance
Replace the battery with a new one.
1
B02157
B02158
CAUTION
 Do not let dust, oil or water get on
or in the access key fob/trans-
mitter when replacing battery.Be careful not to damage the
printed circuit board in the
access key fob/transmitter when
replacing the battery.Be careful not to allow children to
touch the battery and any
removed parts; children could
swallow them.There is a danger of an explosion
if the battery is incorrectly
replaced. Replace only with the
same or equivalent type of the
battery.
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Replacing Battery
377
Maintenance and Service11
4. Insert a new battery with its positive
(+) side facing upward as shown in the
figure.
5. Attach the cover to the access key fob
by fitting the projections and recesses
together.
B01547B01542
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Specifications
383
Specifications12
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■
Manual Transmission and Differential Gear Oil
*1: The indicated oil quantity is only a guideline. The necessary quantity for replacement may differ slightly depending on the temperature and other
factors. After refilling the gearbox with oil, the oil level should be checked.
*2: For more details about maintenance and service, refer to the indicated section.
*3: The vehicle is filled at the factory.
*4: This type of manual transmission oil can be used. However, using this type of oil will increase fuel consumption.
If oil other than “Manual Transmission Gear Oil LV 75W” is used, the following may be experienced:
 The overall performance and function of the transmission may be adversely affected.
 Rattling noises may occur during id ling and fuel consumption may increase.
Never use different brands together.
*5: Using a differential gear oil other than “Differential Gear Oil LX” may cause noise, vibrations and increased fuel consumption. Never use different brands together.■
Fluids
Oil Manual transmission oil Differential gear oil
Oil grade 
Manual Transmission Gear Oil LV 75W*
3
API GL-4 SAE 75W
*4
Differential Gear Oil LX*
3
Other gear oil that meets API GL-5 SAE 75W-85 or GL-5 SAE 75W-
90 specifications*
5
Oil capacity*
1
2.3 US qt (2.2 liters, 1.9 Imp qt) 1.22 US qt (1.15 liters, 1.01 Imp qt)
Remarks*
2
"Manual Transmission Oil"  P353"Differential Gear Oil" P353
Fluid Fluid type
*1
Fluid capacity
*2
Remarks
*3
Automatic Transmission Fluid
(AT models) ATF WS
7.9 US qt (7.5 liters, 6.6 Imp qt)"Automatic Transmission
Fluid" 
P352
Brake fluid FMVSS No. 116, DOT 3 or
DOT 4 brake fluid
―
"Brake Fluid" P353
Clutch fluid (MT models) FMVSS No. 116, DOT 3 or
DOT 4 brake fluid
―"Clutch Fluid (MT models)"

P354
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