2023 SUBARU BRZ check engine

Warning and Indicator Lights
138engine at the first safe opportunity and
contact your nearest SUBARU dealer
immediately.■ AT OIL TEMP Warning
Light (AT Models) If this light illuminates when the engine is
running, it may indicate that the transmis-
sion fluid temperature is too hot.
If the light illuminates while driving, imme-
diately stop the vehicle in a safe place and
let the engine idle until the warning light
turns off.■ Low Tire Pressure
Warning Light (If
Equipped)When the ignition switch is turned to the
“ON” position, the low tire pressure
warning light will illuminate for approxi-
mately 2 seconds to check that the tire
pressure monitoring system (TPMS) is
functioning properly. If there is no problem
and all tires are properly inflated, the light
will go out.
Each tire, including the spare (if provided),
should be checked monthly when cold
and inflated to the inflation pressure
recommended by the vehicle manufac-
turer on the vehicle placard or tire inflation
pressure label. (If your vehicle has tires of
a different size than the size indicated on the vehicle placard or tire inflation pres-
sure label, you should determine the

proper tire inflation pressure for those
tires.)
As an added safety feature, your vehicle
has been equipped with a tire pressure
monitoring system (TPMS) that illumi-
nates a low tire pressure telltale when one
or more of your tires is significantly under-
inflated. Accordingly, when the low tire
pressure telltale illuminates, you should
stop and check your tires as soon as
possible, and inflate them to the proper
pressure. Driving on a significantly under-
inflated tire causes the tire to overheat
and can lead to tire failure. Under-inflation
also reduces fuel efficiency and tire tread
life, and may affect the vehicle’s handling
and stopping ability.
Please note that the TP MS is not a substi-
tute for proper tire maintenance, and it is
the driver’s responsibility to maintain
correct tire pressure, even if under-infla-
tion has not reached the level to trigger
illumination of the TPMS low tire pressure
telltale.
Your vehicle has also been equipped with
a TPMS malfunction indicator to indicate
when the system is no t operating properly.
The TPMS malfunction indicator is
combined with the low tire pressure tell-
tale. When the system detects a malfunc-
tion, the telltale will flash for approximately one minute and then remain continuously

illuminated. This sequence will continue
upon subsequent vehicle start-ups as long
as the malfunction exists. When the
malfunction indicator is illuminated, the
system may not be able to detect or signal
low tire pressure as intended. TPMS
malfunctions may occur for a variety of
reasons, including the installation of
replacement or alternate tires or wheels
on the vehicle that prevent the TPMS from
functioning properly. Always check the
TPMS malfunction telltale after replacing
one or more tires or wheels on your
vehicle to ensure that the replacement or
alternate tires and wheels allow the TPMS
to continue to function properly.
Should the warning light illuminate
steadily after blinking for approximately
one minute, have the system inspected by
your nearest SUBARU dealer as soon as
possible.
WARNING
If this light does not illuminate
briefly after the ig nition switch is
turned on or the light illuminates
steadily after blinking for approxi-
mately one minute, you should have
your Tire Pressure Monitoring Sys-
tem checked at a SUBARU dealer as
soon as possible.
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Warning and Indicator Lights
141
Instruments and Controls3
– CONTINUED –
If the brake system warning light should
illuminate while driving (with the parking
brake fully released and with the ignition
switch positioned in “ON”), it could be an
indication of leaking of brake fluid or worn
brake pads. If this occurs, immediately
stop the vehicle at the nearest safe place
and check the brake fluid level. If the fluid
level is below the “MIN” mark in the reser-
voir, do not drive the vehicle. Have the
vehicle towed to the nearest SUBARU
dealer for repair.▼ Electronic Brake Force Distribution
(EBD) system warning
If the warning light remains on even
though the parking brake is released, the
brake fluid level may be low or there could
be a problem with the EBD system. Park
the vehicle in a safe place immediately
and contact a SUBARU dealer.
▼ Vacuum pressure system warning
The brake system warning light will illumi-
nate when the vacuum pressure sensor is
malfunctioning or brake booster pressure
is decreasing. If the light continues to illu-
minate for several minutes after starting
the engine, there may be a malfunction in
the vacuum system. In this case, drive the
vehicle carefully and have the system
inspected by a SUBARU dealer.
■ Low Fuel Warning LightThe low fuel warning light illuminates
when the tank is nearly empty approxi-
mately 1.8 US gal (7.0 liters, or 1.5 Imp
gal). It only operates when the ignition
switch is in the “ON” position.■ Door Open IndicatorWhen any of the doors or the trunk lid is
not fully closed, the door open indicator
appears. This function is effective even if
the ignition switch is in the “OFF” or “ACC”
position.
The open door is indicated by the corre-
sponding part of the door open indicator.
Always make sure this indicator does not
appear before you start to drive.■ Power Steering
Warning LightWhile the engine is running, a warning
light illuminates and a buzzer sounds if a malfunction is detected in the electric

power steering system.
NOTEIf the steering wheel is operated in the
following ways, the power steering
control system may temporarily limit
the power assist in order to prevent
the system components, such as the
control computer and drive motor,
from overheating.
 The steering wheel is operated
frequently and turned sharply while the
vehicle is maneuvered at extremely low
speeds, such as while frequently
turning the steering wheel during
parallel parking.
 The steering wheel remains in the
fully turned position for a long period
of time.
At this time, there will be more resis-
tance when steering. However this is
not a malfunction. Normal steering
CAUTION
Promptly put fuel in the tank when-
ever the low fuel warning light illu-
minates. Engine misfires as a result
of an empty tank could cause dam-
age to the engine.
CAUTION
When the power steering warning
light is illuminated, there may be
more resistance when the steering
wheel is operated. Drive carefully to
the nearest SUBARU dealer and
have the vehicle inspected immedi-
ately.
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Warning and Indicator Lights
142force will be restored after the steering
wheel is not operated for a while and
the power steering control system has
an opportunity to cool down. However,
if the power steering is operated in a
non-standard way which causes
power assist limitation to occur too
frequently, that may result in a mal-
function of the power steering control
system.■ TRAC OFF Indicator
LightThis light illuminates when the TRAC
system is off. For detai ls, refer to "Vehicle
Stability Control ( VSC)/TRAC System"
 P247.
■ Vehicle Stability
Control (VSC)
Warning Light/Vehicle
Stability Control (VSC) Oper -
ation Indicator Light▼ Vehicle Stability Control (VSC)
warning light
NOTEIf the electrical circuit of the Vehicle
Stability Control (VSC) system itself
malfunctions, the warning light only
illuminates. At this time, the ABS (Anti-
lock Brake System) remains fully oper-
ational.
 The warning light illuminates when
the electronic control system of the
ABS/Vehicle Stability Control (VSC)
system malfunctions.
The Vehicle Stability Control (VSC)
system is probably inoperative under any
of the following conditions. Have your
vehicle checked at a SUBARU dealer
immediately.
 The warning light does not illuminate
when the ignition switch is turned to the
“ON” position.
 The warning light illuminates while the
vehicle is running.NOTEIf the warning light behavior is as
described in the following examples,
the Vehicle Stability Control (VSC) sys-
tem may be considered normal.
 The warning light illuminates right
after the engine is started but turns off
immediately and remains off.
 The warning light illuminates after
the engine has started and turns off
CAUTION
The Vehicle Stability Control (VSC)
system provides its ABS control
through the electrica l circuit of the
ABS. Accordingly, if the ABS is
inoperative, the Vehicle Stability
Control (VSC) system becomes
unable to provide ABS control. As a
result, the Vehicle Stability Control
(VSC) system becomes inoperative,
causing the warning light to illumi-
nate. Although both the Vehicle Sta-
bility Control (VSC) and ABS are
inoperative in this case, the ordi-
nary functions of the brake system
are still available. You will be safe
while driving in this condition, but
drive carefully and have your vehi-
cle checked at a SUBARU dealer as
soon as possible.
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Warning and Indicator Lights
143
Instruments and Controls3
– CONTINUED –
while the vehicle is subsequently being
driven.
 The warning light illuminates during
driving, but turns off immediately and
remains off.▼ Vehicle Stability Control (VSC)
operation indicator light
The indicator light flashes during activa-
tion of the skid suppression function and
during activation of the TRAC system.NOTE The light may remain illuminated for
a short period of time after the engine
has been started, especially in cold
weather. This does not indicate the
existence of a problem. The light
should turn off as soon as the engine
has warmed up.
 The indicator light illuminates when
the engine has developed a problem
and the CHECK ENGINE warning light/
malfunction indicator light is on.
The Vehicle Stability Control (VSC)
system is probably malfunctioning under
the following condition. Have your vehicle
checked at a SUBARU dealer as soon as
possible.
 The light does not turn off even after
the lapse of several minutes (the engine
has warmed up) after the engine has
started.
■ Vehicle Stability
Control (VSC) OFF
Indicator Light The light illuminates when “Vehicle
Stability Control (VSC)” is selected to
deactivate the Vehicle Stability Control
(VSC) system.
The Vehicle Stability Control (VSC)
system is probably malfunctioning under
any of the following conditions. Have your
vehicle checked at a SUBARU dealer
immediately.
 The light does not illuminate while the
system check.
 The light does not turn off even after a
period of approximately 2 seconds after
the ignition switch has been turned to the
“ON” position.
■ Warning Chimes and
Warning Indicator of the
Keyless Access with Push-
Button Start SystemAccess key warning indicatorThe keyless access with push-button start
system is equipped wi th a warning chime
and the access key warning indicator in
order to minimize improper operations
and help protect your vehicle from theft.
When the warning chime sounds and/or
the warning indicator appears, take the
appropriate action.
You cannot turn the warning chimes off.
However, the volume setting of the
outside warning chime can be changed by
a SUBARU dealer. Consult your SUBARU
dealer for details.
306791
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Warning and Indicator Lights
149
Instruments and Controls3
– CONTINUED –
■Select Lever (AT Models
Only)/Gear Position Indicator1) Upshift indicator
2) Downshift indicator (AT models only)
3) Select lever (AT models only)/gear posi-
tion indicatorThis indicator shows the position of the
shift lever (MT models)/select lever (AT
models).
▼ Gear shift indicator (MT models)
When shifting up is recommended for
good fuel economy, the upshift indicator
blinks. Refer to "G ear shift indicator"
 P234. ▼
Upshift/downshift indicator (AT
models)
When the manual mode is selected, the
gear position indicator (which shows the
current gear selection) and the available
upshift/downshift indicator light up. Refer
to "Selection of Manual Mode" P239
■ Cruise Control Indi -
cator Light (White/
Green)/Cruise Control
Warning Light (Yellow)
(Models without the EyeSight
System)This light illuminates in white when the
“ON-OFF” switch is pressed to activate
the cruise control function. When vehicle
speed has been set to use the cruise
control function, this indicator is lighting in
green.
For details, refer to "Cruise Control
(Models without the EyeSight system)"
 P260.
If this light illuminates in yellow, do not use
the cruise control. Contact your SUBARU
dealer for an inspection.
NOTEIf this indicator light does not illumi-
nate even when you press the “ON-
OFF” switch, the cruise control sys-
tem may not operate properly. Have
your vehicle checked by your nearest
SUBARU dealer.■ Turn Signal Indicator
LightsThese lights show the operation of the
turn signal or lane change signal.
If the indicator lights do not blink or blink
rapidly, the turn signal bulb may be
burned out. Have your vehicle inspected
by your SUBARU dealer as soon as
possible.
12
3
702774
CAUTION
If the malfunction indicator light

(CHECK ENGINE warning light) illu-
minates, the cruise control warning
light (yellow) illuminates at the
same time. At this time, avoid driv-
ing at high speeds and have your
vehicle inspected at a SUBARU
dealer as soon as possible.
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Climate Control4
Climate Control
4-1. Ventilator Control................................................198
Center Ventilators.........................................................198
Side Ventilators ............................................................198
4-2. Climate Control Panel.........................................198
4-3. Automatic Climate Control Operation...............200
Sensors .........................................................................200
4-4. Manual Climate Control ......................................201
Airflow Mode Selection ................................................201
Temperature Control ....................................................202
Fan Speed Control........................................................202
Air Conditioner Control................................................202
Air Inlet Selection .........................................................203
To Turn Off the Climate Control System ....................203
4-5. Defrosting ............................................................203 4-6. Operating Tips for Heater and Air

Conditioner ......... ....................................... ........204
Cleaning Ventilator Grille ............................................ 204
Efficient Cooling after Parking in Direct Sunlight .... 204
Lubrication Oil Circulation in the Refrigerant 
Circuit ......................................................................... 204
Checking Air Conditioning System before Summer Season ........................................................................ 204
Cooling and Dehumidifying in High Humidity and 
Low Temperature Weather Condition...................... 205
Air Conditioner Compressor Shut-Off When 
Engine Is Heavily Loaded ......................................... 205
Refrigerant for Your Climate Control System ........... 205
4-7. Air Filtration System ...........................................205
Replacing the Cabin Air Filter .................................... 206
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Operating Tips for Heater and Air Conditioner
204system to the setting that had been
selected before the defroster was acti-
vated.
4-6. Operating Tips for Heater and Air Conditioner■ Cleaning Ventilator Grille1) Front ventilator inlet grille
2) CondenserAlways keep the front ventilator inlet grille
free of snow, leaves, or other obstructions
to ensure efficient heating and defrosting.
Since the condenser is located in front of
the radiator, this area should be kept
clean because cooling performance is
impaired by any accu mulation of insects
and leaves on the condenser.
■ Efficient Cooling after
Parking in Direct SunlightAfter parking in direct sunlight, drive with
the windows open for a few minutes to
allow outside air to circulate into the
heated interior. This results in quicker
cooling by the air conditioner. Keep the
windows closed during the operation of
the air conditioner for maximum cooling
efficiency.■ Lubrication Oil Circulation in
the Refrigerant CircuitOperate the air conditioner compressor at
a low engine speed (at idle or low driving
speeds) a few minutes each month during
the off-season to circulate its oil.■ Checking Air Conditioning
System before Summer
SeasonCheck the air conditioner unit for refrig-
erant leaks, hose conditions, and proper
operation each spring. Have the air condi-
tioning system checked by your SUBARU
dealer.
2
1
403492
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Air Filtration System
205
Climate Control4
– CONTINUED –
■Cooling and Dehumidifying
in High Humidity and Low
Te mperature Weather Condi -
tionUnder certain weather conditions (high
relative humidity, lo w temperatures, etc.)
a small amount of water vapor emission
from the air outlets may be noticed. This
condition is normal and does not indicate
any problem with the air conditioning
system.■ Air Conditioner Compressor
Shut-Off Whe n Engine Is
Heavily LoadedTo improve acceleration and gas mileage,
the air conditio ner compressor is
designed to temporarily shut off during air
conditioner operation whenever the accel-
erator is fully depressed such as during
rapid acceleration or when driving on a
steep upgrade.
■ Refrigerant for Your Climate
Control Syste m1) Air conditioner labelYour air conditioner uses ozone friendly
refrigerant R-1234yf (HFO-1234yf).
Before adding, changing or checking the
refrigerant, check the air conditioner label
in the location shown in the illustration to
confirm the type of refrigerant is used in
your vehicle.
Consult your SUBARU dealer for service.
Repairs needed as a result of using the
wrong refrigerant are not covered under
warranty.
4-7. Air Filtration SystemYour vehicle’s air conditioning system is
equipped with an air filtration system.
Replace the cabin air filter according to
the replacement schedule found in the
“Warranty and Maintenance Booklet”.
This schedule should be followed to main-
tain the filter’s dust collection ability.
Under extremely dusty conditions, the
filter should be replaced more frequently.
Have your filter checked or replaced by
your SUBARU dealer. For replacement,
use only a genuine SUBARU air filter kit.NOTEThe filter can influence the air condi-
tioning, heating and defroster perfor-
mance if not properly maintained.
1
403493
CAUTION
Contact your SUBARU dealer if the
following occurs, even if it is not yet
time to change the filter. Reduction of the airflow through
the vents. Windshield gets easily fogged or
misted.
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