check engine light SUBARU BRZ 2023 User Guide

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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Starting and Operating7
Starting and Operating
7-1. Fuel.......................................................................223
Fuel Requirements .......................................................223
Fuel Filler Lid and Cap .................................................224
7-2. State Emission Testing (U.S. Only) ...................227
7-3. Preparing to Drive ...............................................228
7-4. Starting and Stopping Engine ...........................229
Safety Precautions ............................................ ...........229
Operating Range for Push-Button Start System .......229
General Precautions When St arting Engine ..............229
Starting Engine .............................................................230
Stopping Engine ...........................................................232
When Access Key Fob Does Not Operate 
Properly.......................................................................232
Steering Lock ................................................................232
7-5. Manual Transmission .........................................233
Shifting Speeds ............................................................234
Driving Tips ...................................................................235
7-6. Automatic Transmission ....................................235
Select Lever ..... .......................................... ...................236
Adaptive Control...........................................................237
Shift Lock Function ......................................................238
Selection of Manual Mode ...........................................239
Driving Tips ...................................................................240
7-7. Driving Mode Select Switch (If Equipped) ........241
Normal Mode .................................................................241
Sport Mode ....................................................................241
Snow Mode....................................................................241
Driving Mode Select Switch.........................................241
7-8. Active Sound Control .........................................242
7-9. Power Steering ....................................................242
7-10. Braking...............................................................243
Braking Tips ..................................................................243 Brake System ............................................................... 244
Disc Brake Pad Wear Warning Indicators ................. 245
7-11. ABS (Anti-Lock Brake System) ........................245
ABS Self-Check............................................................ 245
ABS Warning Light ...................................................... 245
7-12. Electronic Brake Force Distribution (EBD)
System ...............................................................246
EBD System Malfunctions .......................................... 246
7-13. Vehicle Stability Control (VSC)/TRAC 
System ...............................................................247
Vehicle Stability Control (VSC) System ..................... 247
TRAC System ............................................................... 247
Vehicle Stability Control (VSC) System Monitor....... 248
Vehicle Stability Control (VSC) OFF Switch .............. 248
7-14. TRACK Mode .....................................................250
TRACK Mode ................................................................ 250
Selecting TRAC Mode and Ve hicle Stability Control
(VSC) Mode ............................................................... 251
7-15. Tire Pressure Monitoring System (TPMS) 
(If Equipped) ......................................................251
Certification for the Transmitter ................................. 253
Certification for the Receiver...................................... 253
TPMS Screen ................................................................ 254
Initializing the Tire Pressure Monitoring System ..... 254
How to Initialize the Tire Pressure Monitoring 
System (If Equipped) ................................................. 254
If You Press the Tire Pressure Monitoring Reset 
Switch Accidentally................................................... 254
Initialization Procedure ............................................... 254
When Initialization of the Tire Pressure Monitoring System has Failed ..................................................... 255
Registering ID Codes .................................................. 255
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Fuel
223
Starting and Operating7
– CONTINUED –
7-1. Fuel■Fuel RequirementsThe engine is designed to operate using
unleaded gasoline with an octane rating
of 93 AKI (98 RON) or higher .
If unleaded gasoline with an octane
rating of 93 AKI (98 RON) is not available,
unleaded gasoline with an octane rating of
91 AKI (95 RON) may be used with no
detriment to engine durability or
driveability.
However, you may notice a slight
decrease in maximum engine perfor-
mance and you may hear some knocking
(pinging) from the engine while using 91
AKI (95 RON) fuel. Use of 91 AKI (95 RON)
fuel will not affect your warranty
coverage.
▼ Fuel octane rating
Using a gasoline with a lower octane
rating can cause persistent and heavy
knocking, which can damage the engine.
Do not be concerned if your vehicle some-
times knocks lightly when you drive up a
hill or when you accelerate. See your
dealer or a qualified service technician if
you use a fuel with the specified octane
rating and your vehi cle knocks heavily or
persistently.
▽RON
This octane rating is the Research Octane
Number.
▽AKI
This octane rating is the average of the
Research Octane and Motor Octane
numbers and is commonly referred to as
the Anti Knock Index (AKI).
▼ Unleaded gasoline
The neck of the fuel filler pipe is designed
to accept only an unleaded gasoline filler
nozzle. Under no circumstances should
leaded gasoline be used because it will
damage the emission control system and
may impair driveability and fuel economy. ▼
Reformulated gasoline
SUBARU supports the use of reformu-
lated gasoline when available. Reformu-
lated gasoline has been blended to burn
more cleanly and reduce vehicle emis-
sions.
▼ MMT
Some gasoline contains an octane-
enhancing additive called MMT (Methylcy-
clopentadienyl Manganese Tricarbonyl). If
you use such fuels, your emission control
system performance may deteriorate and
the CHECK ENGINE warning light/
malfunction indicator light may turn on. If
this happens, return to your authorized
SUBARU Dealer for service. If it is deter-
mined that the condition is caused by the
type of fuel used, repairs may not be
covered by your warranty.
▼ Gasoline for cleaner air
Your use of gasoline with detergent addi-
tives will help prevent deposits from
forming in your engi ne and fuel system.
This helps keep your engine in tune and
your emission cont rol system working
properly, and is a way of doing your part
for cleaner air. If you continuously use a
high quality fuel with the proper detergent
and other additives, you should never
CAUTION
Use of a fuel which is low in
quality or use of an inappropriate
fuel additive may cause damage
to the engine and/or fuel system. Some gas stations, particularly
those in high altitude areas, offer
fuels posted as regular octane
gasoline with an octane rating
below 93 AKI (98 RON). Use of
those fuels are not recom-
mended.
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Fuel
2266. Stop filling the tank after the fuel filler
pump automatically stops. Do not add any
more fuel.
7. Put the cap back on and turn it clock-
wise until you hear a clicking noise. Be
certain not to catch the tether under the
cap while tightening.
8. Close the fuel filler lid completely.
NOTE You will see the “ ” sign in the
fuel gauge. This indicates that the fuel
filler lid is located on the right side of
the vehicle.
 If the fuel filler cap is not tightened
until it clicks or if the tether is caught
under the cap, the CHECK ENGINE
warning light/malfunction indicator
light may illuminate. Refer to "CHECK
ENGINE Warning Light/Malfunction
Indicator Light" P136.
 To lock the fuel filler lid, perform one
of the operations below. However if
these operations are performed when
the fuel filler lid is open, the fuel filler
lid will not lock when it is subsequently
closed. - Press the “ ” button on the key
fob.
- Press the lock side of the power
door locking switch.
WARNING
 When refueling, insert the fuel
nozzle securely into the fuel filler
pipe. If the nozzle is lifted or not
fully inserted, its automatic stop-
ping mechanism may not func-
tion, causing fuel to overflow the
tank and creating a fire hazard. Stop refueling when the auto-
matic stop mechanism on the fuel
nozzle activates. If you continue
to add fuel, temperature changes
or other conditions may cause
fuel to overflow from the tank and
create a fire hazard.
CAUTION
Make sure that the cap is tightened
until it clicks to prevent fuel spillage
in the event of an accident.
CAUTION
Do not let fuel sp ill on the exterior
surfaces of the vehicle. Because
fuel may damage th e paint, be sure
to wipe off any spilled fuel quickly.
Paint damage caused by spilled fuel
is not covered under the SUBARU
Limited Warranty.
CAUTION
 Never add any cleaning agents to
the fuel tank. Th e addition of a
cleaning agent may cause
damage to the fuel system. After refuelin g, turn the cap to the
right until it clicks to ensure that it
is fully tightened. If the cap is not
securely tightened, fuel may leak
out while the vehicle is being
driven or fuel spillage could
occur in the event of an accident,
creating a fire hazard. Do not let fuel spill on the exterior
surfaces of the vehicle. Because
fuel may damage the paint, be
sure to wipe off any spilled fuel
quickly. Paint damage caused by
spilled fuel is not covered under
the SUBARU Limited Warranty. Always use a genuine SUBARU
fuel filler cap. If you use the
wrong cap, it may not fit or have
proper venting and your fuel tank
and emission control system may
be damaged. It could also lead to
fuel spillage and a fire.
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Preparing to Drive
228have implemented emission inspection of
the OBDII system.
 The inspection of the OBDII system
consists of a visual operational check of
the “ CHECK ENGINE ” warning light/
malfunction indicator light (MIL) and an
examination of the OBDII system with an
electronic scan tool.
 A vehicle passes
the OBDII system
inspection if proper operation of the
“ CHECK ENGINE ” warning light is
observed, there are no stored diagnostic
trouble codes, and the OBDII readiness
monitors are all complete.
 A vehicle fails
the OBDII inspection if
the “ CHECK ENGINE ” warning light is not
properly operating (light is illuminated or is
not working due to a burned out bulb) or
there is one or more diagnostic trouble
codes stored in the vehicle’s computer.
 A state emission in spection may reject
(not pass or fail) a vehicle if the number of
OBDII system readiness monitors “ NOT
READY ” is greater than one. If the
vehicle’s battery has been recently
replaced or disconnected, the OBDII
system inspection may indicate that the
vehicle is not ready for the emission test.
Under this condition, the vehicle driver
should be instructed to drive his/her
vehicle for a few days to reset the readi-
ness monitors and return for an emission
re-inspection. 
Owners of rejected or failing vehicles
should contact their SUBARU Dealer for
service.
7-3. Preparing to DriveYou should perform the following checks
and adjustments every day before you
start driving.
1. Check that all windows, mirrors, and
lights are clean and unobstructed.
2. Check the appearance and condition
of the tires. Also check tires for proper
inflation.
3. Look under the vehicle for any sign of
leaks.
4. Check that no small animals enter the
engine compartment.
5. Check that the hood and trunk are fully
closed.
6. Check the adjustment of the seat.
7. Check the adjustment of the inside
and outside mirrors.
8. Fasten your seatbelt. Check that your
passengers have fastened their seatbelts.
9. Check the operation of the warning
and indicator lights when the ignition
switch is turned to the “ON” position.
10. Check the gauges, indicator and
warning lights after starting the engine.
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Starting and Stopping Engine
230On rare occasions, it may be difficult
to start the engine depending on the
fuel and the usage condition (repeated
driving of a distance in which the
engine has not warmed up suffi-
ciently). In such a case, it is recom-
mended that you change to a different
brand of fuel.
 On rare occasions, transient
knocking may be heard from the
engine when the accelerator is oper-
ated rapidly such as a rapid start-up
and a rapid acceleration. This is not a
malfunction.
 The engine starts more easily when
the headlights, air conditioner and rear
window defogger are turned off.■ Starting Engine
NOTEWhen pressing the push-button
ignition switch while depressing the
clutch pedal (MT models) or the brake
pedal (AT models): - The engine starter operates for a
maximum of 10 seconds and after
starting the engine, the starter stops
automatically.
- The engine can be started
regardless of the power status.
 If the engine does not start, check
the security indicator light. Then press
the push-button ignition switch
without depressing the clutch pedal
(MT models) or the brake pedal (AT
models) to switch the power to “OFF”. - If the light had illuminated, try to
start the engine again.
- If the light had been off, press the
push-button ignition switch while
depressing the clutch pedal (MT
models) or the brake pedal (AT
models) more forcefully.
 The engine start procedures may
not function depending on the radio
wave conditions around the vehicle. In
such a case, refer to "Starting Engine"
 P326.
 If the vehicle battery is discharged,
the steering cannot be unlocked.
Charge the battery.
WARNING
 There are some general precau-
tions when starting the engine.
Carefully read the precautions
described in "General Precau-
tions When Starting Engine"
 P229. If the steering lock cannot be
released after the engine has
started, never drive the vehicle.
The steering is still locked, and it
may result in an accident.
CAUTION
 If a system malfunction warning
message is displayed on the
combination meter, there may be
a malfunction with the vehicle.
Contact a SUBARU dealer imme-
diately. If a steering lock warning
message is displayed on the
combination me ter after the
engine has started, it means that
the steering is still locked. While
moving the steering wheel right
and left, depress the brake pedal,
and press the push-button igni-
tion switch. Do not continue pressing the
push-button ignition switch for
more than 10 seconds. Doing so
could cause a malfunction. If the
engine does not start, stop
pressing the push -button ignition
switch. Instead, press the push-
button ignition switch without
depressing the clutch pedal (MT
models) or the brake pedal (AT
models) to switch the power
status to “OFF”. Wait 10 seconds,
and then press the push-button
ignition switch to start the
engine.
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ABS (Anti-Lock Brake System)
245
Starting and Operating7
■Disc Brake Pad Wear
Wa rning IndicatorsThe disc brake pad wear warning indica-
tors on the disc brakes give a warning
noise when the brake pads are worn.
If a squeaking or scraping noise is heard
from the disc brakes while braking, imme-
diately have your vehicle inspected by the
nearest SUBARU dealer.
7-11. ABS (Anti-Lock BrakeSystem)
The ABS prevents the lock-up of wheels
which may occur during sudden braking or
braking on slippery road surfaces. This
helps prevent the loss of steering control
and directional stability caused by wheel
lock-up.
When the ABS is operating, you may hear
a chattering noise or f eel a slight vibration
in the brake pedal. This is normal when
the ABS operates.■ ABS Self-CheckYou may feel a slight shock in the brake
pedal and hear the operating noise of the
ABS from the engine compartment just
after the vehicle is started. This is caused
by an automatic functional test of the ABS
being carried out and does not indicate
any abnormal condition.■ ABS Warning LightRefer to "ABS Warning Light" P140.
700040
WARNING
Always use the utmost care in driv-
ing – overconfidence because you
are driving with an ABS equipped
vehicle could easily lead to a seri-
ous accident.
CAUTION
 The ABS does not always
decrease stopping distance. You
should always maintain a safe
following distance from other
vehicles. When driving on badly surfaced
roads, gravel roads, icy road, or
over newly fallen snow, stopping
distances may be longer for a
vehicle with the ABS than one
without. When driving under
these conditions, therefore,
reduce your speed and leave
ample distance from other vehi-
cles.
 When you feel the ABS operating,
you should maintain constant
brake pedal pressure. Do not
pump the brake pedal since doing
so may defeat the operation of the
ABS.
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Parking Your Vehicle
255
Starting and Operating7
– CONTINUED –
■When Initialization of the Tire
Pressure Monitoring System
has FailedInitialization can be completed in a few
minutes. However, in the following case,
the settings have not been recorded and
the system will not o perate properly. If
repeated attempts to record tire inflation
pressure settings ar e unsuccessful, have
the vehicle checked at your SUBARU
dealer.
 When operating the TPMS set switch,
low tire pressure warning light does not
blink 3 times.
 After carrying out the initialization
procedure, the low tire pressure warning
light blinks for 1 minute then stays on after
driving for 20 minutes.
■ Registering ID CodesEvery tire pressure warning valve and
transmitter has a unique ID code. In addi-
tion to the set of tire pressure monitoring
system sensor ID code s initially registered
to the vehicle, a second set of ID codes
can be registered.
A second set of tire pressure monitoring
system sensor ID codes can be registered
at your SUBARU dealer. When 2 sets of
ID codes have been registered, either ID
code set can be selected.■ Changing the ID code set1. Park the vehicle in a safe place and
turn the ignition swit ch to the “ON” posi-
tion.
2. Press the TPMS set switch 3 times
within 3 seconds.
3. The low tire pressure warning light will
illuminate for 3 seconds and then blink 3
times.
4. The low tire pressure warning light will
blink for 1 minute and then illuminate.
5. When the ID code change has
completed, the tire pressure monitoring
light will turn off.
Check that tire pressures are displayed on
the TPMS screen.
7-16. Parking Your Vehicle■ Parking BrakeTo set the parking brake, depress the
brake pedal firmly and hold it down until
the parking brake lever is fully pulled up.
WARNING
Do not operate the TPMS set switch
without first adjust ing the tire infla-
tion pressure to the specified level.
Otherwise, the low tire pressure
warning light may not come on even
if the tire inflation pressure is low,
or it may come on when the tire
inflation pressure is actually nor-
mal.
WARNING
 Never leave unattended children
or pets in the vehicle. They could
accidentally injure themselves or
others through inadvertent oper-
ation of the vehicle. Also, on hot
or sunny days, the temperature in
a closed vehicle could quickly
become high enough to cause
severe or possibly fatal injuries to
people. Do not park the vehicle over flam-
mable materials such as dry
grass, waste paper or rags, as
they may burn easily if they come
near hot engine or exhaust
system parts. Be sure to stop the engine if you
take a nap in the vehicle. If engine
exhaust gas enters the passenger
compartment, occupants in the
vehicle could die from carbon
monoxide (CO) contained in the
exhaust gas.
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