Subaru BRZ (2019 year). Manual - part 23

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●

When the engine is operated at high engine speeds (for extended peri-
ods of time)

●

When the engine is operated under heavy loads (for extended periods of
time)

●

When the engine idles for extended periods of time

●

When the vehicle is operated in stop and go and/or heavy traffic situa-
tions

●

When the vehicle is used under severe thermal conditions 

●

When the vehicle accelerates and decelerates frequently

Under these or similar conditions, you should check your oil at least every
2nd fuel fill-up and change your engine oil more frequently. Different drivers
in the same car may experience different results. If your oil consumption rate
is greater than expected, contact your authorized SUBARU retailer who may
perform a test under controlled conditions.

WARNING

■

Used engine oil

●

Used engine oil contains potentially harmful contaminants which may
cause skin disorders such as inflammation or skin cancer, so care should
be taken to avoid prolonged and repeated contact. To remove used engine
oil from your skin, wash thoroughly with soap and water.

●

Dispose of used oil and filters only in a safe and acceptable manner. Do
not dispose of used oil and filters in household trash, in sewers or onto the
ground. 
Call your SUBARU dealer, service station or auto parts store for informa-
tion concerning recycling or disposal.

●

Do not leave used engine oil within the reach of children.

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Engine coolant

The coolant level is satisfactory if it is between the “FULL” and “LOW”
lines on the reservoir when the engine is cold.

Reservoir cap
“FULL”
“LOW”

If the level is on or below the
“LOW” line, add coolant up to the
“FULL” line.

CAUTION

■

To prevent serious engine damage

Check the oil level on a regular basis.

■

When replacing the engine oil

●

Be careful not to spill engine oil on the vehicle components.

●

Avoid overfilling, or the engine could be damaged.

●

Check the oil level on the dipstick every time you fill the oil.

●

Be sure the engine oil filler cap is properly tightened.

■

If the coolant level drops within a short time after replenishing

Visually check the radiator, hoses, engine coolant filler cap, radiator cap,
drain cock and water pump. 
If you cannot find a leak, have your SUBARU dealer pressure test the cap
and check for leaks in the cooling system.

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Coolant selection

Only use SUBARU Super Coolant or similar high-quality ethylene glycol-
based non-silicate, non-amine, non-nitrite, and non-borate coolant with long-
life hybrid organic acid technology.

SUBARU Super Coolant is a mixture of 50% coolant and 50% deionized
water. (Enabled: -31

°F [-35°C])

For more details about engine coolant, contact your SUBARU dealer.

WARNING

■

When the engine is hot

Do not remove the radiator cap. 
The cooling system may be under pressure and may spray hot coolant if the
cap is removed, causing serious injuries, such as burns.

CAUTION

■

When adding engine coolant

Coolant is neither plain water nor straight antifreeze. The correct mixture of
water and antifreeze must be used to provide proper lubrication, corrosion
protection and cooling. Be sure to read the antifreeze or coolant label.

■

If you spill coolant

Be sure to wash it off with water to prevent it damaging parts or paint.

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Radiator and condenser

Check the radiator and condenser and clear away any foreign
objects. 
If either of the above parts are extremely dirty or you are not sure of
their condition, have your vehicle checked by your SUBARU dealer.

Brake fluid

■

Checking fluid level

The brake fluid level should be
between the “MAX” and “MIN”
lines on the tank.

“MAX”
“MIN”

WARNING

■

When the engine is hot

Do not touch the radiator or condenser as they may be hot and cause seri-
ous injuries, such as burns.

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Adding fluid
Make sure to check the fluid type and prepare the necessary items.

Fluid type

FMVSS No.116 DOT 3 or DOT 4 brake fluid

Items

Clean funnel

■

Brake fluid can absorb moisture from the air

Excess moisture in the fluid can cause a dangerous loss of braking effi-
ciency. Use only newly opened brake fluid.

WARNING

■

When filling the reservoir

Take care because brake fluid can harm your hands or eyes and damage
painted surfaces. 
If fluid gets in your eyes, flush your eyes with clean water immediately.

If you still experience discomfort, see a doctor.

CAUTION

■

If the fluid level is low or high

It is normal for the brake fluid level to go down slightly as the brake pads
wear or when the fluid level in the accumulator is high. 
If the reservoir needs frequent refilling, it may indicate a serious problem.

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Battery

Check the battery as follows.

■

Battery exterior
Make sure that the battery terminals are not corroded and that
there are no loose connections, cracks, or loose clamps.

Hold-down clamp
Terminals

■

Checking battery fluid

Check that the level is between
“UPPER LEVEL” and “LOWER
LEVEL”. 

“UPPER LEVEL”
“LOWER LEVEL”

If the fluid level is at or below
“LOWER LEVEL”, add distilled
water.

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Adding distilled water

Remove the vent plug.
Add distilled water.

If the “UPPER LEVEL” line cannot be seen, check the fluid level by
looking directly at the cell.

Put the vent plug back on and close securely.

Low

O.K.

STEP 

1 

STEP 

2 

STEP 

3 

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Before recharging

When recharging, the battery produces hydrogen gas which is flammable
and explosive. Therefore, before recharging:

●

If recharging with the battery installed on the vehicle, be sure to discon-
nect the ground cable.

●

Make sure the power switch on the charger is off when connecting and
disconnecting the charger cables to the battery.

■

After recharging/reconnecting the battery (vehicles with a keyless
access with push button start system)

●

Unlocking the doors using the keyless access with push button start sys-
tem may not be possible immediately after reconnecting the battery. If
this happens, use the remote keyless entry system or the mechanical
key to lock/unlock the doors.

●

Start the engine with the push-button ignition switch in “ACC” mode. The
engine may not start with the push-button ignition switch turned off. How-
ever, the engine will operate normally from the second attempt.

●

The push-button ignition switch mode is recorded by the vehicle. If the
battery is reconnected, the vehicle will return the push-button ignition
switch mode to the status it was in before the battery was disconnected.
Make sure to turn off the engine before disconnect the battery. Take extra
care when connecting the battery if the push-button ignition switch mode
prior to discharge is unknown.

If the engine will not start even after multiple attempts, contact your
SUBARU dealer.

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WARNING

■

Chemicals in the battery

A battery contains poisonous and corrosive sulfuric acid and may produce
hydrogen gas which is flammable and explosive. To reduce the risk of death
or serious injury, take the following precautions while working on or near the
battery:

●

Do not cause sparks by touching the battery terminals with tools.

●

Do not smoke or light a match near the battery.

●

Avoid contact with eyes, skin and clothes.

●

Never inhale or swallow electrolyte.

●

Wear protective safety glasses when working near the battery.

●

Keep children away from the battery.

■

Where to safely charge the battery

Always charge the battery in an open area. Do not charge the battery in a
garage or closed room where there is not sufficient ventilation.

■

Emergency measures regarding electrolyte

●

If electrolyte gets in your eyes
Flush your eyes with clean water for at least 15 minutes and get immedi-
ate medical attention. If possible, continue to apply water with a sponge or
cloth while traveling to the nearest medical facility.

●

If electrolyte gets on your skin
Wash the affected area thoroughly. If you feel pain or burning, get medical
attention immediately.

●

If electrolyte gets on your clothes
It can soak through clothing on to your skin. Immediately take off the cloth-
ing and follow the procedure above if necessary.

●

If you accidentally swallow electrolyte
Drink a large quantity of water or milk. Get emergency medical attention
immediately.

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Washer fluid

If the washer fluid level is at
“LOW”, add washer fluid.

CAUTION

■

When recharging the battery

Never recharge the battery while the engine is running. Also, be sure all
accessories are turned off.

■

When adding distilled water

Avoid overfilling. Water spilled during battery recharging may cause corro-
sion.

■

Using the gauge

The washer fluid level can be checked by
observing the position of the level on the
liquid-covered holes in the gauge. 
If the level falls below the second hole
from the bottom (the “LOW” position),
refill the washer fluid.

CTH43AS134

Current
fluid level

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WARNING

■

When adding washer fluid

Do not add washer fluid when the engine is hot or running, as washer fluid
contains alcohol and may catch fire if spilled on the engine etc.

CAUTION

■

Washer fluid 

Do not use soapy water or engine antifreeze instead of washer fluid. 
Doing so may cause streaking on the vehicle’s painted surfaces, as well as
damaging the pump leading to problems of the washer fluid not spraying.

■

Diluting washer fluid

Dilute washer fluid with water as necessary. 
Refer to the freezing temperatures listed on the label of the washer fluid bot-
tle.

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Tires

Replace or rotate tires in accordance with maintenance sched-
ules and treadwear.

■

Checking tires

New tread
Treadwear indicator
Worn tread

The location of treadwear
indicators is shown by the
“TWI” or “

” marks, etc.,

molded on the sidewall of
each tire.

Check spare tire condition
and pressure if not rotated.

■

Tire rotation

Vehicles with a compact spare tire

Rotate the tires in the order
shown.

To equalize tire wear and
extend tire life, SUBARU rec-
ommends that tire rotation is
carried out at the same inter-
val as tire inspection.

Front

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

When replacing tires or wheels, tire pressure warning valves and
transmitters must also be installed. 

When new tire pressure warning valves and transmitters are
installed, new tire pressure warning valve and transmitter ID codes
must be registered in the tire pressure warning computer and tire
pressure monitoring system must be initialized. Have tire pressure
warning valve and transmitter ID codes registered by your SUBARU
dealer. (

→P. 371)

Vehicles with a spare tire of the same wheel type as the
installed tires

Rotate the tires in the order
shown.

To equalize tire wear and
extend tire life, SUBARU rec-
ommends that tire rotation is
carried out at the same inter-
val as tire inspection.

■

The tire pressure monitoring system (if equipped)
Your SUBARU is equipped with a tire pressure monitoring sys-
tem that uses tire pressure warning valves and transmitters to
detect low tire inflation pressure before serious problems arise. 
(

→P. 426)

Front

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Registering ID codes (vehicles with a tire pressure monitoring
system)

The tire pressure warning valve and transmitter is equipped with a
unique ID code. When replacing a tire pressure warning valve and
transmitter, it is necessary to register the ID code. Have the ID code
registered by your SUBARU dealer.

■

When to replace your vehicle’s tires
Tires should be replaced if:

●

You have tire damage such as cuts, splits, cracks deep enough to
expose the fabric or bulges indicating internal damage

●

A tire goes flat repeatedly or cannot be properly repaired due to the
size or location of a cut or other damage

If you are not sure, consult with your SUBARU dealer.

■

Replacing tires and wheels (vehicles with a tire pressure monitor-
ing system)
If the ID code of the tire pressure warning valve and transmitter is not
registered, the tire pressure monitoring system will not work properly.
After driving for about 20 minutes, the tire pressure warning light comes
on after blinking for 1 minute to indicate a system malfunction.

■

Tire life
Any tire over 6 years old must be checked by a qualified technician even
if they have seldom or never been used or damage is not obvious.

■

If the tread wears down below 0.16 in. (4 mm) on snow tires
The effectiveness of snow tires is lost.

■

Low profile tires
Generally, low profile tires will wear more rapidly and tire grip perfor-
mance will be reduced on snowy and/or icy roads when compared to
standard tires. Be sure to use snow tires or tire chains on snowy and/or
icy roads and drive carefully at a speed appropriate for road and weather
conditions.

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Maximum load of tire
Check that the maximum load of the replacement tire is greater than 1/2
of the Gross Axle Weight Ratings (GAWR) of either the front axle or the
rear axle, whichever is greater.

■

Tire types
1 Summer tires

Summer tires are high-speed performance tires best suited to highway
driving under dry conditions. Since summer tires do not have the same
traction performance as snow tires, summer tires are inadequate for
driving on snow-covered or icy roads. For driving on snow-covered
roads or icy roads, the use of snow tires is recommended. When
installing snow tires, be sure to replace all four tires.

2 All season tires

All season tires are designed to provide better traction in snow and to
be adequate for driving in most winter conditions, as well as for use
year round. All season tires, however, do not have adequate traction
performance compared with snow tires in heavy or loose snow. Also,
all season tires fall short in acceleration and handling performance
compared with summer tires in highway driving.

3 Snow  tires

For driving on snow-covered roads or icy roads, we recommend using
snow tires. If you need snow tires, select tires of the same size, con-
struction and load capacity as the originally installed tires. Since your
vehicle has radial tires as original equipment, make sure your snow
tires also have radial construction. Do not install studded tires without
first checking local regulations for possible restriction. Snow tires
should be installed on all wheels. (

→P. 274)

For the GAWR, see the Certification
Label. For the maximum load of the
tire, see the load limit at maximum cold
tire inflation pressure mentioned on the
sidewall of the tire. (

→P. 502)

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Initializing the tire pressure monitoring system (if equipped)
Initialize the system with the tire inflation pressure adjusted to the speci-
fied level.

■

Routine tire inflation pressure checks (vehicles with a tire pressure
monitoring system)
The tire pressure monitoring system does not replace routine tire infla-
tion pressure checks. Make sure to check tire inflation pressure as part
of your routine of daily vehicle checks.

■

Tire pressure monitoring system certification (if equipped)
MODEL/FCC IDs:

Transmitter: PAXPMVC010
Receiver: HYQ23AAA (vehicles without a keyless access with push

button start system) 
HYQ23AAE (vehicles with a keyless access with push but-
ton start system)

NOTE:
This device complies with part 15 of the FCC Rules. Operation is subject
to the following two conditions: (1) This device may not cause harmful
interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.
FCC WARNING:
Changes or modifications not expressly approved by the party responsi-
ble for compliance could void the user's authority to operate the equip-
ment.