Subaru BRZ (2019 year). Instruction

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4-3. Do-it-yourself maintenance

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WARNING

■

Tire pressure monitoring system operation (if equipped)
The tire pressure monitoring system may not provide warning immedi-
ately if a tire bursts or if sudden air leakage occurs.

■

When inspecting or replacing tires
Observe the following precautions to prevent accidents.
Failure to do so may cause damage to parts of the drive train, as well as
dangerous handling characteristics, which may lead to an accident
resulting in death or serious injury.

●

Make sure to install 4 tires that are of the specified size, and that all 4
tires are the same for the following items:
• Size
• Circumference
• Speed symbol
• Load index
• Construction
• Manufacturer
• Brand (tread pattern)
• Degrees of wear

You must obey the specification printed on the tire placard. The tire plac-
ard is located on the driver's door pillar.
If all four tires are not the same in items listed above, there is a possibil-
ity that it may lead to serious mechanical damage to the drive train of
your car and affect the following.

• Ride
• Handling
• Braking
• Speedometer/Odometer calibration
• Clearance between the body and the tires

It also may be dangerous and lead to loss of vehicle control as well as an
accident.

●

Only use radial tires.

●

Do not mix summer, all season and snow tires.

●

Do not use tires that have been used on another vehicle.
Do not use tires if you do not know how they were used previously.

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CAUTION

■

Repairing or replacing tires, wheels, tire pressure warning valves,
transmitters and tire valve caps (vehicles with a tire pressure moni-
toring system)

●

When removing or fitting the wheels, tires or the tire pressure warning
valves and transmitters, contact your SUBARU dealer as the tire pres-
sure warning valves and transmitters may be damaged if not handled
correctly.

●

When replacing tire valve caps, do not use tire valve caps other than
those specified. The cap may become stuck.

■

Driving on rough roads
Take particular care when driving on roads with loose surfaces or pot
holes.
These conditions may cause losses in tire inflation pressure, reducing
the cushioning ability of the tires. In addition, driving on rough roads may
cause damage to the tires themselves, as well as the vehicle’s wheels
and body.

■

Low profile tires and wheels
Low profile tires may cause greater damage than usual to the wheel
when receiving impact from the road surface. Therefore pay attention to
the following:

●

Be sure to use proper tire inflation pressure. If tires are under-inflated,
they may be damaged more severely.

●

Avoid pot holes, uneven pavement, curbs and other road hazards.
Failure to do so may lead to severe tire and wheel damage.

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CAUTION

■

If tire inflation pressures become low while driving
Do not continue driving, or your tires and/or wheels may be ruined.

■

Wheel balance
Although the wheels are correctly balanced when the vehicle is first
delivered, they will become imbalanced as the tires wear. An imbalanced
wheel may cause the steering wheel to vibrate slightly at certain vehicle
speeds and may affect the vehicle’s straight-line stability. If you notice
abnormal tire wear or vibration in the steering wheel, contact your
SUBARU dealer.

■

Wheel alignment
Incorrect wheel alignment can result in uneven tire wear reducing the
stability of the vehicle. If you notice uneven tire wear, contact a SUBARU
dealer to have the wheel alignment inspected.

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Tire inflation pressure

■

Tire inflation pressure
The recommended cold tire inflation pressure and tire size is dis-
played on the tire and loading information label. (

→P. 496)

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■

Tire inflation pressure check interval
You should check tire inflation pressure every two weeks, or at least
once a month.
Do not forget to check the spare.

■

Inspection and adjustment procedure

Tire valve
Tire pressure gauge

Remove the tire valve cap.
Press the tip of the tire pressure gauge onto the tire valve.
Read the pressure using the graduations of the gauge.
If the tire inflation pressure is not within the recommended
levels, adjust the pressure.
If you add too much air, press the center of the valve to
lower.
After completing the tire inflation pressure measurement
and adjustment, apply soapy water to the valve and check
for leakage.
Reinstall the tire valve cap.

STEP

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■

Effects of incorrect tire inflation pressure
Driving with incorrect tire inflation pressure may result in the following:

●

Reduced fuel economy

●

Reduced driving comfort and poor handling

●

Reduced tire life due to wear

●

Reduced safety

●

Damage to the drive train

If a tire needs frequent refilling, have it checked by your SUBARU dealer.

■

Instructions for checking tire inflation pressure
When checking tire inflation pressure, observe the following:

●

Check only when the tires are cold.
If your vehicle has been parked for at least 3 hours and has not been
driven for more than 1 mile or 1.5 km, you will get an accurate cold
tire inflation pressure reading.

●

Always use a tire pressure gauge.
It is difficult to judge if a tire is properly inflated based only on its
appearance.

●

It is normal for the tire inflation pressure to be higher after driving as
heat is generated in the tire. Do not reduce tire inflation pressure after
driving.

●

Never exceed the vehicle capacity weight.
Passengers and luggage weight should be placed so that the vehicle
is balanced.

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WARNING

■

Proper inflation is critical to save tire performance
Keep your tires properly inflated.
If the tires are not properly inflated, the following conditions may occur
which could lead to an accident resulting in death or serious injury:

●

Excessive wear

●

Uneven wear

●

Poor handling

●

Possibility of blowouts resulting from overheated tires

●

Air leaking from between tire and wheel

●

Wheel deformation and/or tire damage

●

Greater possibility of tire damage while driving (due to road hazards,
expansion joints, sharp edges in the road, etc.)

CAUTION

■

When inspecting and adjusting tire inflation pressure
Be sure to reinstall the tire valve caps.
If a valve cap is not installed, dirt or moisture may get into the valve and
cause an air leak, resulting in decreased tire inflation pressure.

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Wheels

If a wheel is bent, cracked or heavily corroded, it should be
replaced. Otherwise, the tire may separate from the wheel or
cause loss of handling control.

■

Wheel selection
When replacing wheels, care should be taken to ensure that
they are equivalent to those removed in load capacity, diameter,
rim width, and inset

Replacement wheels are available at your SUBARU dealer.

: Conventionally referred to as “offset”.

SUBARU does not recommend using:

● Wheels of different sizes or types
● Used wheels
● Bent wheels that have been straightened

■

Alloy wheel precautions
● Use only SUBARU wheel nuts and wrenches designed for

use with your alloy wheels.

● When rotating, repairing or changing your tires, check that the

wheel nuts are still tight after driving 1000 miles (1600 km).

● Be careful not to damage the alloy wheels when using tire

chains.

● Use only SUBARU genuine balance weights or equivalent

and a plastic or rubber hammer when balancing your wheels.

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■

When replacing wheels (vehicles with a tire pressure monitoring
system)
The wheels of your SUBARU are equipped with tire pressure warning
valves and transmitters that allow the tire pressure monitoring system to
provide advanced warning in the event of a loss in tire inflation pressure.
Whenever wheels are replaced, the tire pressure warning valves and
transmitters must be installed. (

→P. 370)

WARNING

■

When replacing wheels

●

Do not use wheels that are a different size from those recommended in
the Owner’s Manual, as this may result in loss of handling control.

●

Never use an inner tube in a leaking wheel which is designed for a
tubeless tire. Doing so may result in an accident, causing death or seri-
ous injury.

■

When installing the wheel nuts

●

Never use oil or grease on the wheel bolts or wheel nuts.
Oil and grease may cause the wheel nuts to be excessively tightened,
leading to bolt or disc wheel damage. In addition, the oil or grease can
cause the wheel nuts to loosen and the wheel may fall off, causing an
accident and resulting in death or serious injury. Remove any oil or
grease from the wheel bolts or wheel nuts.

●

Be sure to install the wheel nuts with
the tapered ends facing inward.
Installing the nuts with the tapered
ends facing outward can cause the
wheel to break and eventually cause
the wheel to come off while driving,
which could lead to an accident
resulting in death or serious injury.

Tapered portion

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CAUTION

■

Replacing tire inflation pressure warning valves and transmitters
(vehicles with a tire pressure monitoring system)

●

Because tire repair or replacement may affect the tire pressure warn-
ing valves and transmitters, make sure to have tires serviced by your
SUBARU dealer or other qualified service shop. In addition, make sure
to purchase your tire pressure warning valves and transmitters at your
SUBARU dealer.

●

Ensure that only genuine SUBARU wheels are used on your vehicle.
Tire pressure warning valves and transmitters may not work properly
with non-genuine wheels.

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Air conditioning filter

The air conditioning filter must be changed regularly to maintain air
conditioning efficiency.

■

Removal method

Vehicles without a keyless access with push button
start system
Turn the engine switch off.

Vehicles with a keyless access with push button start
system
Turn the push-button ignition switch off.

Open the glove box. Slide off
the damper.

Push in each side of the glove
box and pull the glove box
toward you to disconnect the
claws.

STEP

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Lower the glove box slowly
until surface is horizontal
with the floor, then pull it out.
(Simply pulling with gentle
force will disengage the lower
claws.)

Lower claw
Lower claw engagement
point

Do not forcibly pull the glove
box. Otherwise, the lower
claws or the lower claw
engagement points may be
deformed, making it difficult to
reinstall or close the glove box.

Remove the filter cover.

Remove the air conditioning
filter and replace it with a new
one.

The “

↑UP” marks shown on

the filter should be pointing up.

When installing, reverse the steps listed.

STEP

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Checking interval

Inspect and replace the air conditioning filter according to the maintenance
schedule. In dusty areas or areas with heavy traffic flow, early replacement
may be required. (For scheduled maintenance information, please refer to
the “Warranty and Maintenance Booklet” [except for Canada] or “Warranty
and Service Booklet” [for Canada].)

■

If air flow from the vents decreases dramatically

The filter may be clogged. Check the filter and replace if necessary.

CAUTION

■

When removing the glove box

Do not forcibly pull the glove box. Otherwise, the lower claws or the lower
claw engagement points may be deformed, making it difficult to reinstall or
close the glove box.

■

When using the air conditioning system

Make sure that a filter is always installed.
Using the air conditioning system without a filter may cause damage to the
system.

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Transmitter/access key battery

Replace the battery with a new one if it is depleted.

■

You will need the following items:
● Flathead screwdriver
● Lithium battery CR2016 (vehicles without a keyless access

with push button start system), or CR2032 (vehicles with a
keyless access with push button start system)

■

Replacing the battery (vehicles without a keyless access
with push button start system)

Remove the cover.

To prevent damage to the key,
cover the tip of the screwdriver
with a rag.

To prevent the buttons from
being disassembled, face the
button surface downward.

Remove the module.

STEP

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Open the case cover using a
coin protected with tape and
remove the depleted battery.

Insert a new battery with the
“+” terminal facing up.

■

Replacing the battery (vehicles with a keyless access with
push button start system)

Take out the mechanical key.

Insert the tip of a flathead
screwdriver into the groove
and remove the cover.

To prevent damage to the key,
wrap the tip of the screwdriver
with protective tape.

STEP

Groove

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Remove the depleted battery.

To prevent damage to the key,
wrap the tip of the screwdriver
with protective tape.

Install a new battery with the
“+” terminal facing up, as
shown in the illustration.

Align the protruding part with
the slot and install the cover.

STEP

Subaru BRZ (2019 year). Instruction - part 24