2018 SUBARU BRZ Owners Manual

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4-3. Do-it-yourself maintenance
4
Maintenance and care
BRZ_U (A4450BE-A)
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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Maintenance and care
BRZ_U (A4450BE-A)
■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. 375)
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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BRZ_U (A4450BE-A)
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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Maintenance and care
BRZ_U (A4450BE-A)
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 1
STEP 2
STEP 3

390 4-3. Do-it-yourself maintenance
BRZ_U (A4450BE-A)
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 4
STEP 5
STEP 6
STEP 7

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Maintenance and care
BRZ_U (A4450BE-A)
■
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 batter y
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.
STEP1
STEP2