warning light SUBARU BRZ 2023 Repair Manual

Light Control Switch
178NOTEEven when the operation conditions of
the high beam assist function are met,
there may be a case in which the high
beam assist indicator does not illumi-
nate.▼ How to temporarily lower the sensi -
tivity of the high beam assist func -
tion
The sensitivity of the high beam assist
function can be lowered by using the
following operations.
1. After turning the ignition switch to the
“ON” position, set the light control switch
to the “AUTO” position and push the
signal lever forward (high beam position).
2. After the high beam assist indicator on
the combination meter will illuminate, turn
the ignition switch to the “OFF” position.
3. Turn the ignition switch to the “ON”
position and within approximately 15
seconds, press the “ ” (following
distance setting) switch more than 10
times consecutively.
When the sensitivity of the high beam
assist function is lowered, the high beam
assist indicator light “ ” on the combina-
tion meter display (col or TFT) will flash.
NOTEThe sensitivity of the high beam
assist function cannot be lowered in
the following conditions. - Cruise control or Adaptive
Cruise Control indicator is illumi-
nated.
- The EyeSight warning indicator
(yellow) is illuminated
 The sensitivity of the high beam
assist function retu rns to normal level
the next time the ignition switch is
turned to the “OFF ” position and the
engine is restarted.
▼ How to change the headlight mode
manually
Change to the low beam:
 Set the light control switch to “ ”.
 Pull the lever while the high beam is
turning on and release it.
Change to the high beam:
Push the lever forward and release it.
At this time, the high beam assist function
will turn off, the high beam assist indicator
will turn off and the high beam indicator
light will turn on.NOTE After manually changing the head-
light mode to the high beam, if you turn on the high beam assist function, push

the lever forward and release it.
 When manually changing the head-
light mode to the high beam, if you turn
the light control switch to the “ ”
position, the parking lights, side
marker lights, tail lights and license
plate lights will turn on.
▼ Tips for the high beam assist
system
The high beam assist function recog-
nizes the condition surrounding the
vehicle based on the brightness of illumi-
nation ahead of your vehicle, etc. There-
fore, the headlight mode may switch in
some situations that do not match to the
driver’s sense.
 A bicycle or cargo cycle may not be
detected.
 Under the following situations, the
brightness of ambient illumination may not
be detected correctly and the high beam
assist function may not work properly. As
a result, the glare of the high beam may
disturb the oncoming vehicle or vehicle
ahead. Also, the low beam mode may
continue although there are no oncoming
vehicles and vehicles ahead. In the such
cases, change the headlight mode manu-
ally.
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Steering Responsive Headlight (SRH) (If Equipped)
180■Daytime Running Light
SystemThe daytime running lights will automati-
cally illuminate when the following condi-
tions are fulfilled.
The engine is running.
 The parking brake is fully released.
 The light control switch is in the
“AUTO”, “ ” or “OFF” position.
 For AT models, the select lever is in a
position other than the “P” position.NOTE When the light switch is in the “ ”
position, the instrument panel illumina-
tion, side marker lights, tail lights and
license plate lights are also illumi-
nated. 
While the headlight switch is in the
“AUTO” position and the headlights
turn on automatically, the daytime
running light is deactivated.
 When the turn signal indicators are
flashing, the daytime running light on
the side that the turn signals are
flashing will turn off.
3-11. Steering Responsive
Headlight (SRH) (If Equipped)1) The target area of illumination when
SRH is activated
2) The target area of illumination when
SRH is not activatedSRH is a function that automatically
moves the headlight beam to the left or
right in accordance with the steering
angle. This function helps to improve the
visibility at night by illuminating the road
ahead at corners and intersections.
You can turn the SRH function on or off.
The settings can be changed by using the
combination meter display (color TFT) or
center information display. For details,
WARNING
When the daytime running lights are
illuminated, the tail lights do not
illuminate. When it becomes dark
outside, turn the li ght switch to the
“ ” position to illuminate the head-
lights and tail lights. This will
improve visibility and allow other
drivers to see your vehicle more
easily.
1
2
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Steering Responsive Headlight (SRH) (If Equipped)
181
Instruments and Controls3
refer to "Driving Support System Settings
Display" P157, "Car settings" P1651) SRH OFF indicatorThe SRH OFF indicator on the combina-
tion meter display (color TFT) turns off
when SRH is turned on.
The SRH OFF indicator on the combina-
tion meter display (color TFT) illuminates
when SRH is turned off.
1) SRH warning indicatorIf SRH is malfunctioning, the SRH warning
indicator on the combination meter display
(color TFT) illuminates and a message
appears on the warning screen when the
ignition switch is in the “ON” position. It
indicates that SRH has been deactivated.
Contact a SUBARU dealer for an inspec-
tion.NOTE The SRH function operative/non-
operative status is kept when the
engine is turned off, even if the engine
is restarted.
 When you turn the ignition switch to
the “ON” position, the SRH OFF indi-
cator will illuminate and turn off after
several seconds. 
SRH only activates when the vehicle
is traveling forward at the speed of
approximately 5 mph (8 km/h) or more.
1
306814
1
306815
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Defrosting
203
Climate Control4
– CONTINUED –
To turn off the air conditioner, press the
button again. The indicator light will turn
off.NOTEFor efficient defogging or dehumidify-
ing in cold weather, turn on the air
conditioner. However, if the ambient
temperature decreases to approxi-
mately 32°F (0°C), the air conditioner
and dehumidification system may not
work properly.■ Air Inlet SelectionSelect the air inlet by pressing the air inlet
selection button.
 Recirculation:
When the indicator light on the air inlet
selection button illuminates, interior air is
recirculated inside the vehicle. Press the
air inlet selection button to the ON position
in the following cases.
- When driving on a dusty road
- When you want cooling perfor-
mance to increase (for example, in
particularly hot weather)
 Outside air circulation:
When the indicator light on the air inlet
selection button does not illuminate,
outside air is drawn into the passenger
compartment. Press the air inlet selection button to the OFF position in the following

cases.
- When the road is no longer dusty
- When the interior has cooled to a
comfortable temperature
NOTEWhen outside air circulation is
selected, the system may automati-
cally adjust the air inlet setting
depending on such factors as the tem-
perature setting, the temperature
inside the vehicle, or conditions out-
side the vehicle.■ To Turn Off the Climate
Control SystemTo turn off the clim ate control system,
press the ON/OFF button.
4-5. DefrostingSelect the “ ” or “ ” mode to defrost
or dehumidify the windshield and the side
door windows.NOTE When the “” or “” mode is
selected, the air conditioner operates
automatically regardless of the posi-
tion of the air conditioner button to
defrost the wi ndshield more quickly.
However, the indicator on the air condi-
tioner button may not illuminate. At the
same time, the air inlet selection is
automatically set to the outside air
circulation mode.
 After defrosting the windshield by
pressing the defroster button “ ”,
pressing the button again returns the
WARNING
Continued operation in the recircu-
lation mode may fog up the win-
dows. Switch to the outside air
circulation mode as soon as the
outside dusty condition clears.
403491
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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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Starting and Operating
Changing the ID code set ............................................ 255
7-16. Parking Your Vehicle ........................................255
Parking Brake ............................................................... 255
Parking Tips.................................................................. 256
7-17. Hill Start Assist System ....................................257
To Activate/Deactivate the Hill Start Assist 
System ........................................................................ 258
Hill Start Assist Indicator Light................................... 259
7-18. Cruise Control (Models without the 
EyeSight system) ..............................................260
To Set Cruise Control .................................................. 260
To Temporarily Cancel the Cr uise Control ................ 261
To Turn Off the Cruise Control ................................... 262
To Change the Cruising Speed ................................... 262
Cruise Control Indicator Light .................................... 263
7-19. Rear View Camera .............................................263
How to Use the Rear View Camera ............................. 264
Viewing Range on the Screen ..................................... 265
Help Lines ..................................................................... 266
7-20. BSD/RCTA (If Equipped)...................................268
System Features .......................................................... 268 System Operation......................................................... 270
BSD/RCTA Approach Indi
cator Light/Warning 
Buzzer ......................................................................... 271
BSD/RCTA OFF Indicator ............................................ 273
BSD/RCTA Warning Indicator ..................................... 274
To Turn On/Off the BSD/RCTA .................................... 274
Certification for the BSD/RCTA................................... 274
Handling of Radar Sensors ......................................... 276
7-21. Reverse Automatic Braking (RAB) System 
(If Equipped) ..................................................... 277
Reverse Automatic Braking (RAB) System 
Overview ..................................................................... 278
Operating Conditions................................................... 279
Sonar Audible Alarm .................................................... 282
Automatic Braking Operation ..................................... 284
Canceling the Reverse Au tomatic Braking (RAB)
System Operation ...................................................... 285
Reverse Automatic Braking (RAB) System 
ON/OFF Setting .......................................................... 286
RAB Warning Indicator ................................................ 286
Handling of the Sonar Sensors ................................... 286
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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
225
Starting and Operating7
– CONTINUED –
Press the unlock side of the power
door locking switch.
3. The fuel filler lid opens automatically.
Open it further by hand.
1) Open
2) Close4. Remove the fuel filler cap by turning it
slowly counterclockwise.
5. Set the fuel filler cap on the cap holder
inside the fuel filler lid.
WARNING
Before opening the fuel filler cap,
first touch the veh icle body or a
metal portion of the fuel pump or
similar object to discharge any
static electricity that may be present
on your body. If your body is carry-
ing an electrostatic charge, there is
a possibility that an electric spark
could ignite the fuel, which could
burn you. To avoid acquiring a new
static electric charge, do not get
back into the vehicle while refueling
is in progress.
WARNING
 Gasoline vapor is highly flam-
mable. Before refueling, always
turn the ignition switch to the
“OFF” position first and then
close all vehicle doors and
windows. Make sure that there
are no lighted cigarettes, open
flames or electrical sparks in the
adjacent area. Only handle fuel
outdoors. Quickly wipe up any
spilled fuel.
1
2
702787
 When opening the cap, grasp it
firmly and turn it slowly to the left.
Do not remove the cap quickly.
Fuel may be under pressure and
spray out of the fuel filler neck,
especially in hot weather. If you
hear a hissing sound while you
are removing the cap, wait for the
sound to stop and then slowly
open the cap to prevent fuel from
spraying out and creating a fire
hazard.
702788
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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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State Emission Testing (U.S. Only)
227
Starting and Operating7
– CONTINUED –
▼If the fuel filler lid cannot be opened
If the fuel filler lid cannot be opened due to
a malfunction or a dead battery, it can be
opened from the trunk. 1. Remove the access cover at the right-
side of the trunk trim.
1) Lever2. Push the yellow lever to unlock the fuel
filler lid.
7-2. State Emission Testing (U.S. Only)California and a number of federal states

have Inspection/Maintenance programs
to inspect your vehicle’s emission control
system. If your vehicle does not pass this
test, some states may deny renewal of
your vehicle’s registration.
Your vehicle is equipped with a computer
that monitors the performance of the
engine’s emission control system. Certi-
fied emission inspectors will inspect the
On-Board Diagnostic (OBDII) system as
part of the state emission inspection
process. The OBDII system is designed to
detect engine and transmission problems
that might cause the vehicle emissions to
exceed allowable limits. OBDII inspec-
tions apply to all 1996 model year and
newer passenger cars and trucks. Over
30 states plus the District of Columbia
Immediately put fuel in the tank
whenever the low fuel warning
light illuminates. Engine misfires
as a result of an empty tank could
cause damage to the engine.
Continuing to operate your
vehicle at an extremely low fuel
level may result in a reduction of
engine performance.
702789
1
702790
CAUTION
Resultant vehicle damage due to
improper testing is not covered
under the SUBARU Limited War-
ranty and is the responsibility of the
state inspection program or its con-
tractors or licensees.
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