steering SUBARU BRZ 2023 Workshop Manual

Flat Tires
307
In Case of Emergency9
– CONTINUED –
If the tire is punctured, you can seal the
flat tire temporarily by using the flat tire
repair kit. You can seal a flat tire caused,
for example, by nails or similar objects
with less than 0.2 in (4 mm). However,
depending on the type and extent of tire
damage, some tires can only be partially
sealed or not sealed at all, and this condi-
tion may cause a loss of tire pressure. A
loss of tire pressure can affect vehicle
handling, leading to the loss of vehicle
control.
After sealing the flat tire temporarily,
change the tires with new ones as soon as
possible. We recommend that you have
the sealed tire changed by your nearest
SUBARU dealer. You may reuse the
wheel if the attached sealant is wiped off,
but the valve of the wheel must be
replaced with a new one. If you reuse the
wheel without replacing the valve, air may
leak from the valve. For tire replacement, refer to "Tire

Replacement" P365.
▼ Safety precautions when sealing a
flat tireObserve the following rules when sealing
a flat tire.1) Sealing is possible
2) Sealing is not possible
Compliance with these instructions
is vital to ensuring vehicle safety.
Noncompliance with these instruc-
tions means risking tire damage,
which can affect vehicle handling
and lead to loss of vehicle control.
This may result in serious injury or
death.
WARNING
 Do not use the flat tire repair kit in
the following cases.
- The tire has already been
damaged as a result of being
driven in the under inflated
condition.
900483
1 2
2
- The tire damage is not located
within the visible tread of the
tire.- The tire damage is on the
sidewall of the tire.- When the tire has been taken
off of the wheel.- The wheel or the tire valve of
the flat tire is damaged.- Two or more tires have been
punctured.- The expiration date of the
sealant has passed.- The tire is punctured by
pointed items such as nails of
0.2 in (4 mm) or larger.
 When inflating the flat tire, if the
tire inflation pressure does not
reach the green zone of the pres-
sure gauge within 10 minutes, do
not continue to seal the tire. We
recommend that you contact your
SUBARU dealer. Drive with caution and avoid
making sudden steering or
driving maneuvers. Do not exceed a maximum speed
of 50 mph (80 km/h). Do not exceed a maximum
driving distance of 125 miles (200
km).
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Flat Tires
312outlet. Apply the parking brake and turn on
the ignition switch to the “ACC” position.Turn the air compressor switch on and
adjust the air pressure to the appropriate
level (green zone of the air gauge).
NOTE After the compressor starts to
operate, the air pressure will tempo-
rarily rise to 45 psi (300 kPa, 3.0 kgf/
cm
2) or higher. After about 30 seconds
when all of the sealant is inside the tire,
the air pressure will lower, repre-
senting the air pressure in the tire.
 In extremely low temperatures −22°F
to −4°F ( −30°C to − 20°C), the viscosity
of the sealant increases and the
sealant will flow more slowly. In such
temperatures, bring the sealant into
the vehicle to warm it up before use.
 When mending the tire, if the air
pressure gauge is hard to read, turn
the compressor switch off once to get
an accurate reading. 5. While filling the tire with air, attach the

speed limit label on the position shown in
the illustration.
900888
psi
40 40
20 20
30 30
0 0 0 0
901088
CAUTION
 Do not run the air compressor for
more than 10 minutes as it can
get hot. Be care ful not to get
burned. If tire pressure doesn’t reach the
green zone for 10 minutes, this kit
will be unable to seal the tire.
Please contact your SUBARU
dealer for help.
WARNING
Do not attach the speed limit label
in a position where the label hides
the warning lamp or on the steering
wheel. It may interfere with the nor-
mal operation of the airbag and lead
to a critical failure.
901219
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Flat Tires
3148. After driving for 10 minutes or 3 miles
(5 km), whichever comes first, stop the vehicle in a safe place to recheck the air

pressure (see step 4).
If necessary, fill the tire with air to the
appropriate air pressure again and drive
carefully to the nearest SUBARU dealer
for tire, valve stem and sealant bottle
replacement.
NOTEConnect the air compressor only to
the tire valve.
Before the tire is removed from the rim,
inform your SUBARU dealer or other tire
dealer that the tire contains sealant.
NOTENew sealant and replacement parts
can be purchased from your autho-
rized repair shop or SUBARU dealer,
and they should also be installed into
the kit by a specialist. Empty sealant
bottles and replacement parts must be
returned to your SUBARU dealer or
disposed of in compliance with local
waste disposal regulations.▼ Technical data of air compressor
If heavy vibrations, unsteady
steering behavior or noises occur
while driving, reduce your speed
and drive with caution to a loca-
tion where it is safe for you to
stop the vehicle. Recheck the tire
and its pressure. If the tire pres-
sure is in the red zone of the air
gauge or if there are any cracks,
bumps or similar tire damage
visible, temporary repairs cannot
be performed with the repair kit.
We recommend that you consult
with your SUBARU dealer or road
service provider.
psi40 40
20 2030 30
0 0 0 0
901089
CAUTION
 If the air pressure is in red zone of
the air gauge, the kit did not
successfully seal the puncture. In
this case, please stop driving and
contact your SUBARU dealer for
help. Do not drive your vehicle with the
sealed tire for more than 125
miles (200 km). Failure to replace
the valve stem may result in air
leakage at the valve stem.
CAUTION
The sealant bottle and speed limit
label need to be replaced after
using the flat ti re repair kit.Line voltage DC 12 V
Operating voltage DC 10 – 15 V
Amperage Max. 10 A
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Towing
324holes, return the plugs to their original
places.■Using a Flat-Bed Truck
This is the best way to transport your
vehicle. Use the following procedures to
ensure safe transportation.
1. Shift the select lever into the “P” posi-
tion for AT models. Sh ift the shift lever into
the 1st position for MT models.
2. Apply the parking brake firmly.
3. Secure the vehicle onto the carrier
properly with safety chains. Each safety
chain should be equally tightened and
care must be taken not to pull the chains
so tightly that the suspension bottoms out.
■ Towing with All Wheels on
the Ground
WARNING
Use the rear tie-down holes only for
downward anchoring. If they are
used to anchor the vehicle in any
other direction, cables may slip out
of the holes, possibly causing a
dangerous situation.
900488
CAUTION
Transport by flat -bed truck may
cause the headlights to become
misaligned. In such a case, have the
headlight alignment checked by a
SUBARU dealer after transporting
the vehicle by flat-bed truck.
WARNING
 Never turn the ignition switch to
the “OFF” position while the
vehicle is being towed because
the steering wheel and the direc-
tion of the wheels will be locked. Remember that the brake booster
and power steering do not func-
tion when the engine is not
running. Because the engine is
turned off, it w ill take greater
effort to operate the brake pedal
and steering wheel.
900489
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Exterior Care
33210-1. Exterior Care■Washing
NOTE
When having your vehicle washed in
an automatic car wash, make sure
beforehand that the car wash is of
suitable type.
The best way to preserve your vehicle’s
beauty is frequent washing. Wash the
vehicle at least once a month to avoid
contamination by road grime.
Wash dirt off with a wet sponge and plenty
of lukewarm or cold water. Do not wash
the vehicle with hot water and in direct
sunlight.
Salt, chemicals, insects, tar, soot, tree
sap, and bird droppings should be washed
off by using a light detergent, as required.
If you use a light detergent, make certain
that it is a neutral detergent. Do not use
strong soap or chemical detergents. All
cleaning agents should be promptly
flushed from the surface and not allowed
to dry there. Rinse the vehicle thoroughly with plenty of lukewarm water. Wipe the

remaining water off with a chamois or soft
cloth. Wear rubber gloves and use a hand
brush when washing down underbody,
inner fenders and suspension to effec-
tively remove mud and dirt off.
▼ Washing the underbody
Chemicals, salts and gravel used for
deicing road surfaces are extremely corro-
sive, accelerating the corrosion of under-
body components, such as the exhaust
system, fuel and brake lines, brake
cables, floor pan and fenders, and
suspension.
Thoroughly flush the underbody and
inside of the fenders with lukewarm or
cold water at frequent intervals to reduce
the harmful effects of such agents.
Mud and sand adhering to the underbody
components may accelerate their corro-
sion.
After driving off-road or on muddy or
sandy roads, wash the mud and sand off
the underbody.
Carefully flush the suspension and axle
parts, as they are particularly prone to
mud and sand buildup. Do not use a
sharp-edged tool to remove caked mud.
CAUTION
 When washing the vehicle, the
brakes may get wet. As a result,
the brake stopping distance will
be longer. To dry the brakes,
drive the vehicle at a safe speed
while lightly pressing the brake
pedal to heat up the brakes. Do not wash the engine compart-
ment and areas adjacent to it. If
water enters the engine air intake
or electrical parts, it will cause
engine trouble or a malfunction of
the power steering. When washing inner fenders,
underbody, bumpers and
protruding objects such as
exhaust pipes and exhaust
finishers, be careful to prevent
injuries from contacting sharp
ends.
 Do not use any organic solvents
when washing the surface of the
bulb assembly cover. However, if
a detergent with organic solvents
is used to wash the cover surface,
completely rinse off the detergent
with water. Otherwise, the cover
surface may be damaged.
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Corrosion Protection
334Do not use detergent on the wheels
when they are hot, such as after driving or
parking in hot weather.■ Alloy Wheels (Vehicles with
Matte Painted Wheels)As matte painted wheels require different
cleaning methods than conventional alloy
wheels, be sure to observe the following.
For details, consult your SUBARU dealer.
 Remove dirt using water. If the wheels
are excessively dirty, use a sponge or soft
cloth dampened with a diluted neutral
detergent to remove the dirt.
 To prevent the matte paint from being
damaged, make sure to observe the
following precautions:
- Do not scrub or polish the wheels
using a brush or dry cloth.
- Do not use any wheel coatings or
abrasive detergents.
10-2. Corrosion ProtectionYour SUBARU has been designed and
built to resist corrosi on. Special materials
and protective finishes have been used on
most parts of the vehicle to help maintain
fine appearance, strength, and reliable
operation.■ Most Common Causes of
CorrosionThe most common causes of corrosion
are:
 The accumulation of moisture retaining
dirt and debris in body panel sections,
cavities, and other areas.
 Damage to paint and other protective
coatings caused by gravel and stone
chips or minor accidents.
Corrosion is accelera ted on the vehicle
when:
 It is exposed to road salt or dust control
chemicals, or used in coastal areas where
there is more salt in the air, or in areas
where there is considerable industrial
pollution.
 It is driven in areas of high humidity,
especially when temperatures range just
above freezing.
 Dampness in certain parts of the
vehicle remains for a long time, even though other parts of the vehicle may be

dry.
 High temperatures will cause corrosion
to parts of the vehicle which cannot dry
quickly due to lack of proper ventilation.
■ To Help Prevent CorrosionWash the vehicle regularly to prevent
corrosion of the body and suspension
components. Also, wash the vehicle
promptly after driving on any of the
following surfaces.
 Roads that have been salted to prevent
them from freezing in winter
 Mud, sand, or gravel
 Coastal roads
After the winter has ended, it is recom-
mended that the underbody be given a
very thorough washing.
Before the beginning of winter, check the
condition of underbody components, such
as the exhaust system, fuel and brake
lines, brake cables, suspension, steering
system, floor pan, and fenders. If any of
them are found to be rusted, they should
be given an appropriate rust prevention
treatment or should be replaced. Contact
your SUBARU dealer to perform this kind
of maintenance and treatment if you need
assistance.
Repair chips and scratches in the paint as
soon as you find them.
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Tires and Wheels
362Roadholding is good, and steering
is responsive. Rolling resistance is
low, so fuel consumption is also
lower.
 Under inflated tires (tread worn at
shoulders) Rolling resistance is high, so fuel
consumption is also higher.

Over inflated tires (tread worn in
center) Ride comfort is poor. Also, the tire

magnifies the effects of road
surface bumps and dips, possibly
resulting in vehicle damage.
B00050
B00051
WARNING
Driving at high speeds with
excessively low tire pressures
can cause the tires to deform
severely and to rapidly
become hot. A sharp increase
in temperature could cause
tread separation, and destruc-
tion of the tires. The resulting
loss of vehicle control could
lead to an accident.
B00052
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Tires and Wheels
363
Maintenance and Service11
– CONTINUED –
■Wheel BalanceEach 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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Tire Information
397
Consumer Information and Reporting Safety Defects13
– CONTINUED –
The vehicle placard shows original
tire size, recommended cold tire
inflation pressure on each tire at
maximum loaded vehicle weight,
seating capacity and loading infor-
mation.▼ Adverse safety consequences
of under-inflation
Driving at high speeds with exces-
sively low tire pressures can cause
the tires to flex severely and to
rapidly become hot. A sharp
increase in temperature could
cause tread separation, and failure
of the tire(s). Possible resulting loss
of vehicle control could lead to an
accident.
▼ Measuring and adjusting air
pressure to achieve proper
inflation
Check and, if necessary, adjust the
pressure of each tire (including the
spare) at least once a month and
before any long journey. Check the
tire pressures when the tires are
cold. Use a pressure gauge to adjust the tire pressures to the

specific values. Driving even a short
distance warms up the tires and
increases the tire pressures. Also,
the tire pressures are affected by
the outside temperature. It is best to
check tire pressure outdoors before
driving the vehicle. When a tire
becomes warm, t he air inside it
expands, causing the tire pressure
to increase. Be careful not to
mistakenly release air from a warm
tire to reduce its pressure.
■ Glossary of Tire TerminologyAccessory weight
The combined weight (in excess of
those standard items which may be
replaced) of automatic transmis-
sion, power steering, power brakes,
power windows, power seats, radio,
and heater, to the extent that these
items are available as factory-
installed equipment (whether
installed or not).
 Bead
The part of the tire that is made of
steel wires, wrapped or reinforced by ply cords and that is shaped to fit

the rim.
 Bead separation
A breakdown of the bond between
components in the bead.
 Bias ply tire
A pneumatic tire in which the ply
cords that extend to the beads are
laid at alternate an gles substantially
less than 90 degrees to the
centerline of the tread.
 Carcass
The tire structure, except tread and
sidewall rubber which, when
inflated, bears the load.
 Chunking
The breaking away of pieces of the
tread or sidewall.
 Cold tire pressure
The pressure in a tire that has been
driven less than 1 mile or has been
standing for three hours or more.
 Cord
The strands forming the plies in the
tire.
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Index
414GAWR (Gross Axle Weight Rating) .....................................P299
G-force .................................................................................P154
G-force (peak hold function).................................................P154
Glove box .............................................................................P214
GVWR (Gross Vehicle Weight Rating).................................P299HHazard warning flasher ............................................. P127, P302
Head restraint adjustment ......................................................P34
Headlight Aim adjustment ................................................................P374
Beam leveler....................................................................P182
Bulb replacement.............................................................P373
Bulb wattage ....................................................................P388
Control switch ..................................................................P174
Flasher.............................................................................P176
Indicator light ...................................................................P150
Welcome lighting function................................................P175
High Beam Assist Function ...........................................................................P177
Indicator light ...................................................................P150
High beam indicator light......................................................P150
High/low beam change (dimmer) .........................................P176
Hill start assist ......................................................................P257 Indicator light ...................................................................P150
To activate/deactivate............... .......................................P258
HomeLink
®...........................................................................P186 Hook
Towing and tie-down....................................................... P320
Horn..................................................................................... P195
Hose and connections ... ................................................ ...... P348
IIcy road surface warning light...... ........................................ P151
Illumination brightness control ............................................. P130
Immobilizer .......................................................................... P108
Indicator light (security indicato r light) ............................ P148
Indicator light BSD/RCTA OFF ............................................................. P150
BSD/RCTA warning ........................................................ P150
Cruise control.................................................................. P149
Cruise control set ............................................................ P149
Door open ....................................................................... P141
Drive mode ..................................................................... P148
Front passenger’s frontal airbag ON and OFF ....... P72, P135
Headlight......................................................................... P150
High beam ...................................................................... P150
High Beam Assist ........................................................... P150
Hill start assist........ ......................................................... P150
Malfunction ..................................................................... P136
RAB OFF ........................................................................ P151
REV ................................................................................ P130
Security ........................................................................... P148
Select lever/Gear position ....... ........................................ P149
Steering Responsive Headlight OFF .............................. P150
TRAC OFF ...................................................................... P142
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