engine SUBARU BRZ 2023 Service Manual

Clock
172Maintenance Schedule setting:
The setting procedure is the same as
“Engine Oil” setting, but touch the “Mainte-
nance Schedule” item in step 2.NOTE Touch “Reset” to reset each setting.
 Touch “Update” to revert to the
default value.
3-9. ClockFor models with a genuine SUBARU
audio system, the clock can be adjusted
using either auto mode or manual mode.■ Setting the Clock Manually1. Turn the ignition switch to the “ON”
position.
2. Press (HOME).
3. Touch (Settings).
4. →“General”
5. →“Clock”
6. →“Time Setting” 7.
→“Manual”
8. → or
9. →“OK”
NOTEThe clock setting screen can also be
displayed by touching the clock on the
status bar.
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Light Control Switch
1743-10. Light Control SwitchThe light control switch operates when the
push-button ignition switch is in the “ACC”
or “ON” position.
Regardless of the pos ition of the light
control switch, the illuminated lights are
turned off when the push-button ignition
switch is turned off.NOTEThe light control switch can be oper-
ated (except auto on/off headlights),
even the push-button ignition switch
is turned off.
If the driver’s door is opened while the
headlights are illuminated under such conditions, a chirp sound will inform

the driver that the lights are illumi-
nated.
■ HeadlightsTo turn on the headlights, turn the knob on
the end of the light control switch.
“OFF” position:
The headlights are all off.
*1,*2
*1: For Canada models, when the light switch is
switched to the “OFF” position while the
vehicle is stopped, the lights turn off. Then
the light switch will automatically return to
the “AUTO” position.
*2: For Canada models, the headlights will automatically change to the AUTO mode
when the following conditions are met: The engine is running.
 The parking brake is fully released. 
For AT models, the select lever is in a
position other than “P” position.
“” position:
Instrument panel illumination, headlights,
parking lights, side marker lights, tail lights
and license plate lights are on.
“” position:
Instrument panel illumination, parking
lights, side marker lights, tail lights and
license plate lights are on.
“AUTO” position: auto on/off head-
lights
When the ignition switch is in the “ON”
position, the instrum ent panel illumination,
headlights, parking lights, side marker
lights, tail lights and license plate lights
are automatically on or off depending on
the level of the ambient light.
The light sensitivity of the auto on/off
headlights can be changed by operating
the combination meter display (color TFT)
or the center information display. For
details, refer to "Settings Display" P157
or "Car settings" P165. Also, the setting
can be changed by a SUBARU dealer.
Consult your SUBARU dealer for details.
▼ Battery-saving function
If the headlights or tail lights are illumi-
nated when the push-button ignition
switch is off, in order to prevent the battery
from becoming discharg ed, the lights will
CAUTION
Use of any lights for a long period
of time while the engine is not
running can cause the battery to
discharge. Before leaving the vehicle, make
sure that the light control switch
is turned to the off position. If the
vehicle is left unattended for a
long time with the light control
switch set to a position other than
the off position, the battery may
be discharged.
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Light Control Switch
175
Instruments and Controls3
– CONTINUED –
automatically be turned off after approxi-
mately 20 minutes.
If a door is opened or closed, the battery
saving function will temporarily be
canceled and the lights will automatically
be turned off after approximately 20
minutes.▼ Auto-on/off wiper-linked headlights
While the light control switch is in the
“AUTO” position, the headlights will auto-
matically turn on when the windshield
wipers operate several times. The head-
lights will automatica lly turn off approxi-
mately 1 minute after the wiper stops.
The ON/OFF setting of this function can
be changed by operating the combination
meter display (color TFT) or the center
information display. For details, refer to
"Settings Display" P157 or "Car
settings" P165. Also, the setting can be
changed by a SUBARU dealer. Consult
your SUBARU dealer for details.
▼ Welcome lighting function
The welcome lighting function turns on the
low beam headlight for smooth
approaching to or exiting from the vehicle
at night or in a dark place.
The function is activated while all of the
following conditions are met. 
The light control swit ch is in the “AUTO”
position
 It is dark enough to turn on the auto on/
off headlights
NOTEIf the engine is turn ed off after turning
off the light swit ch, the welcome
lighting function may not operate (for
Canada models).
▽ When approaching
While the welcome lighting function is acti-
vated, the low beam headlights will auto-
matically illuminate when unlocking the
doors by using the remote keyless entry
system.
The low beam headlights will remain illu-
minated for 30 seconds
*1 and then turn
off. However, if any of the following opera-
tions is done, the low beam headlights will
turn off.
 The ignition switch is turned to the “ON”
position.
 The doors are locked.
 The light control switch is turned to a
position other than “AUTO”. ▽
When exiting
While the welcome lighting function is acti-
vated, the low beam headlights will remain
illuminated even when the push-button
ignition switch is turned to the “OFF”
status.
The low beam headlights will turn off
under any of the following conditions.
 30 seconds have passed since the
door is opened and closed.
*1
 The light control switch is turned to a
position other than “AUTO”.
 The locking procedure is performed
twice. When performing the unlocking
procedure after performing the locking
procedure, perform the locking procedure
twice again.*1: The setting for the period of time in which
the low beam headlights remain on by the
welcome lighting function can be changed
by a SUBARU dealer. Contact your
SUBARU dealer for details. Also, you can
change the setting by operating the combi-
nation meter display (color TFT) or the
center information display. For details, refer
to "Settings Display" P157 or "Car
settings"  P165.
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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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Light Control Switch
179
Instruments and Controls3
– CONTINUED –
- In bad weather (fog, snow, sand
storm, heavy rain, etc.).
- When the windshield glass is dirty or
fogged.
- When the windshield is cracked or
damaged.
- If there are lights similar to the head-
lights or the tail lights in the surrounding
area.
- When an oncoming vehicle or
vehicle ahead is driven without its
headlights and tail lights on.
- If the headlights of an oncoming
vehicle or the tail lights of a vehicle
ahead are dirty or discolored, or if the
light beams are not aimed correctly.
- When a rapid change of brightness
continues while driving.
- When driving on a road with many
ups and downs or uneven surfaces.
- When driving on a road with many
curves.
- When there are some objects that
reflect light strongly, such as a road
sign or a mirror in vehicle ahead.
- When the rear part of the vehicle
ahead, such as a container, reflects
light strongly.
- When the headlights of your vehicle
are damaged or dirty.
- When your vehicle is tilted, such as
in case the vehicle has a flat tire or is
being towed. - When the stereo camera is

deformed or the stereo camera lenses
are dirty.
- Immediately after the engine has
started.
 In the following conditions, the head-
light mode will not be automatically
changed from the high beam to the low
beam.
- When your vehicle passes an
oncoming vehicle suddenly in a blind
curve.
- When another vehicle passes in
front of your vehicle.
- When an oncoming vehicle or
vehicle ahead comes in and out of view
because of continuous curves, median
strips, roadside trees, etc.
 If the stereo camera detects the light of
the front fog lights of an oncoming vehicle,
the headlight mode may change from the
high beam to the low beam automatically.
 The headlight mode may change from
the high beam to the low beam, or the low
beam mode may continue, when affected
by a street light, traffic signal, illumination
of an advertisement board, or a reflective
object such as a road sign and signboard.
 The timing of the change of headlight
mode may differ due to the following
factors. - Color or brightness of the headlights

of an oncoming vehicle or the tail lights
of a vehicle ahead.
- The headlights of the oncoming
vehicle or the tail lights of the vehicle
ahead are covered with mud, snow,
etc.
- Movement and direction of an
oncoming vehicle or a vehicle ahead.
- When the headlights of an
oncoming vehicle or the tail lights of a
vehicle ahead illuminate on only one
side.
- When the oncoming vehicle or
vehicle ahead is a motorcycle.
- Conditions of a road (slope, curve,
road surface, etc.).
- Number of passengers and weight
of loaded cargo.
- Limitation of the detection ability of
the stereo camera.
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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.
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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
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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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Ventilator Control
1984-1. Ventilator Control■Center Ventilators1) Open
2) CloseMove the tab to adjust the flow direction.
To open the ventilator, turn the center
grille open/close wheel upward to the “ ”
position.
To close it, turn th e wheel downward to
the “ ” position.
■ Side Ventilators1) Open
2) CloseTo adjust the flow direction, move the tab.
4-2. Climate Control Panel
21
21
403482
2
1
403483
WARNING
The cooling function operates
only when the engine is running. Do not leave children or adults
who would normally require the
support of others alone in your
vehicle. Pets should not be left
alone either. On hot, sunny days,
temperatures in a closed vehicle
could quickly become high
enough to cause severe or
possibly fatal injuries to people
or animals.
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Automatic Climate Control Operation
2004-3. Automatic Climate Control OperationWhen this mode is selected, the fan
speed, airflow mode, air-inlet control, and
air conditioner operation are automatically
controlled. To activate this mode, perform
the following.
1. Press the AUTO button. The FULL
AUTO mode is selected and the “FULL
AUTO” indicator light on the display illumi-
nates.
2. Set the preferred temperature using
the temperature control dial.NOTE Operate the automatic climate
control system when the engine is
running.
 Even when cooling is not necessary,
the air conditioner will automatically
turn on if the temperature is set much
lower than the cu rrent outlet air
temperature. Even in this case, the “A/
C” indicator light on the control panel
illuminates
 The air conditioner may not operate
in the following cases: - When the cabin temperature is
low
- When the ambient temperature
decreases close to 32°F (0°C) 
The controllable temperature range
may vary depending on the regional
specifications of the vehicle.
 If you operate any of the buttons on
the control panel other than the ON/
OFF button, rear window defogger
button, SYNC button and temperature
control dial(s) during FULL AUTO
mode operation, the “FULL” indicator
light on the control panel will turn off
and the “AUTO” indicator light will
remain illuminated. You can then
manually control the system as desired
using the button you operated. To
change the system back to the FULL
AUTO mode, press the AUTO button.
To turn off the climate control system,
press the ON/OFF button. Then the air
inlet selection will be set to the following.
 When the air inlet selection is set to
auto mode: Outside air circulation
 When the air inlet selection is set to
manual mode: No change
When the ignition switch is changed to the
“OFF” or “ACC” position from “ON”, the air
inlet mode will automatically change to the
outside air mode regardless of whether it
is the auto mode or manual mode.
■ Sensors1) Interior air temperature sensor
2) Solar sensorThe automatic climate control system
employs several sensors. These sensors
are delicate. If they are treated incorrectly
1
2
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