2023 SUBARU BRZ engine

Immobilizer
1082-2. ImmobilizerThe immobilizer system is designed to
prevent an unauthorized person from
starting the engine. Only keys registered
with your vehicle’ s immobilizer system
can be used to operate your vehicle. If
engine start is attempted with an unregis-
tered access key fob or key, the engine
will not start. Even if the engine does start,
it will stop after a few seconds. This
system, however, is not a 100% anti-theft
guarantee.NOTE To protect your ve hicle from theft,
please pay close attention to the
following security precautions: - Never leave your vehicle unat-
tended with its keys inside. - Before leaving your vehicle,

close all windows and lock the
doors.
- Do not leave spare keys or any
record of your key number in the
vehicle.
 The vehicle has a maintenance-free
type immobilizer system.
■ Security Indicator LightRefer to "Security Indicator Light" P148.■ Key ReplacementYour key number plate will be required if
you ever need a replacement key made.
Any new key must be registered for use
with your vehicle’ s immobilizer system
before it can be used. The maximum
number of keys that can be registered for
use with one vehicle is seven.
One key that has already been registered
is required in order to register a new key.NOTEIf you lose a key, the lost key’s ID code
still remains in the memory of the vehi-
cle’s immobilizer system. For security
reasons, the lost key’s ID code should
be erased from the memory. To erase
the lost key’s ID code, all keys that will
be used are required. For details about new key registration

and erasing the lost key’s ID code,
contact your SUBARU dealer.
■ Certification for Immobilizer
SystemRefer to "Certificati on for Keyless Access
with Push-Button Start System" P106.
CAUTION
 Do not place the key under direct
sunlight or anywhere it may
become hot. Do not get the key wet. If the key
gets wet, wipe it dry with a cloth
immediately. Do not modify or remove the
system. If modified or removed,
the proper operation of the
system cannot be guaranteed.
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Alarm System
114the battery from going dead. The following
interior lights are affect ed by this function.NOTEThe default setting for this function
is set as “operational”. The opera-
tional/non-operation al setting of this
function can be changed by a SUBARU
dealer. Contact your SUBARU dealer to
change the setting.
 When leaving the vehicle, please
make sure that all doors are completely
closed.
 The battery drainage prevention
function does not operate when the
ignition switch is in “ACC” or “ON”
position.
 The battery drainage prevention
function for the pu sh-button ignition
switch. For details, refer to "Battery
drainage prevention function" P126.
2-5. Alarm SystemThe alarm system helps to protect your
vehicle and valuables from theft. The horn
sounds and the hazard warning flashers
flash if someone attempts to break into
your vehicle.
The system can be armed or disarmed
with the keyless access function or access
key fob.
The system will not be activated when the
push-button ignition switch is in the “ACC”
or “ON” position.
Your vehicle’s alarm system has been set
for deactivation at the time of shipment
from the factory. You can set the system
for activation yourself or have it done by
your SUBARU dealer. Refer to "Alarm
System Setting" P115.■ Alarm System OperationWhen the alarm system is armed, it is trig-
gered by the opening any of the doors, the
trunk lid or engine hood.
The alarm system will activate the
following alarms when triggered.
 The vehicle’s horn will sound for 60
seconds.
 The hazard warning flashers, head-
lights, side marker lights, tail lights and
map lights will flash for 60 seconds.
NOTEThe alarm system can be set to trigger
the illumination of the map lights (illu-
minates only when the door interlock
switch is in the “DOOR” position).■ Arming the SystemThe alarm system becomes armed when
the following operation is performed.
1. Close all windows and turn the ignition
switch to the “OFF” position.
2. Carry the key and get out of the
vehicle.
3. Make sure that the engine hood is
locked.
4. Lock the doors using any of the
following methods.
Locking using the remote keyless
entry system. For details, refer to
"Remote Keyless Entry System"
 P109.
 Locking using the keyless access
function. For details, refer to "Locking
with the door lock sensor" P99.
 Locking using the power door
locking switch. For details, refer to
"Locking using power door locking
switch" P112.
Item Switch
posi-tion Automatically turn-
ing off
Map lights DOOR Approximately 20
minutes later
Ignition
switch light ―
Approximately 20
minutes later
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Alarm System
115
Keys and Doors2
– CONTINUED –
Security indicator light
NOTE
All doors, the trunk lid and fuel filler
lid will lock, an electronic chirp will
sound once, the hazard warning
flashers will flash once, and the secu-
rity indicator light will turn on.
 If any of the doors are not fully
closed, an electronic chirp sounds 5
seconds to alert you that the doors are
not properly closed. When you close
the door, doors will automatically lock
and the system will automatically arm
in 30 seconds.
5. Approximately 30 seconds later, the
system will enter surveillance state.
When the system is in surveillance state,
the security indicator light will then flash
slowly (once approximately every 3 seconds), indicating
that the system has
been armed for surveillance.
NOTE The system can be armed even if the
windows are open. Always make sure
that they are fully closed before arming
the system.
 If any of the following actions is
done during the standby period, the
system will not switch to the surveil-
lance state. - Doors (including the trunk lid)
are unlocked.
- Any door (including the engine
hood) is opened.
- Push-button ignition switch is
turned to the “ACC” position■Disarming the SystemPerform either of the following proce-
dures.
Briefly press a button (for less than 2
seconds) on the access key fob.
 Carry the access key fob and perform
either of the following procedures.
- Grip the door handle.
- Press the trunk opener button
- Unlock using the PIN code access.
The flashing of the security indicator light
will blinks slowly (once approximately every 3 seconds), indicating that the alarm

system has been disarmed.
▼ Emergency disarming
If you cannot disarm the system using the
access key fob, you can disarm the
system without using the access key fob.
The system can be disarmed if you turn
the ignition switch from the “OFF” position
to the “ON” position.
NOTEIf the access key fob battery is dis-
charged, perform the procedure
described in "Switching Power Status"
 P326. In such a case, replace the
battery immediately. Refer to "Replac-
ing Battery of Access Key Fob"
 P376.■ Alarm System SettingTo change the setting of your vehicle’s
alarm system for activa tion or deactiva-
tion, do the following.
1. Disarm the alarm system. Refer to
"Disarming the System" P115.
2. Sit in the driver’s seat and shut all
doors, the trunk lid and engine hood.
3. Turn the ignition switch to the “ON”
position.
204136
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Trunk Lid
119
Keys and Doors2
– CONTINUED –
3. Open the window completely and then
press and hold down the power window
switch for approximately 1 second.
4. Close the window completely and then
pull and hold the power window switch for
approximately 1 second.
2-7. Trunk Lid
WARNING
 To prevent dangerous exhaust
gas from entering the vehicle,
always keep the trunk lid closed
while the engine is running. Check that the trunk is
completely closed before driving.
If it is not, it may suddenly open,
which could lead to an accident. Help prevent children, adults or
animals from locking themselves
in the trunk. On hot or sunny
days, the temperature in the trunk
could quickly become high
enough to cause death or serious
heat-related injuries including
brain damage to anyone locked
inside, particularly for small chil-
dren. When leaving the vehicle, close
all windows and lock all doors.
Also make certain that the trunk
is closed.
CAUTION
 Be extremely careful not to catch
fingers or other objects when
closing the trunk lid.
 Before opening and closing the
trunk, carefully check your
surroundings to make sure it will
not strike any people or objects. When loading and unloading
cargo, be careful not to come in
contact with the hot engine
exhaust gas or the exhaust pipe,
because they could burn you. Be careful opening the trunk
when the wind is strong. The
trunk lid could close or open
suddenly, possibly causing inju-
ries. Make sure that the trunk is
completely open when using it. If
it is not, the trunk lid may
suddenly drop and cause serious
injury. Remove snow and ice from the
trunk lid before opening it. Not
doing so could cause the trunk lid
to fall after it is opened. Under the following conditions,
the trunk lid may close unexpect-
edly, striking people or objects in
its path:
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Instruments and Controls3
Instruments and Controls
3-1. Push-Button Ignition Switch ..............................125
Safety Precautions ............................................ ...........125
Operating Range for Push-Button Start System .......125
Switching Power Status ...............................................125
When Access Key Fob Does Not Operate 
Properly.......................................................................126
3-2. Hazard Warning Flasher .....................................127
3-3. Meters and Gauges .............................................127
Speedometer .................................................................127
Tachometer ...................................................................127
Odometer and Double Trip Meter................................128
Fuel Gauge ....................................................................129
Engine Coolant Temperature Gauge ..........................129
Outside Temperature ...................................................129
Combination Meter Settings ........................................130
3-4. REV indicator light and buzzer ..........................130
3-5. Illumination Brightness Control ........................130
Auto Dimmer Cancel Function ....................................131
3-6. Warning and Indicator Lights ............................131
Seatbelt Warning Light and Chime .............................131
SRS Airbag System Warning Light .............................135
Front Passenger’s Frontal Airbag ON and OFF Indicators ....................................................................135
CHECK ENGINE Warning Light/Malfunction 
Indicator Light ............................................................136
Coolant Temperature Low Indicator Light/Coolant Temperature High Warning Light .............................136
Charge Warning Light ..................................................137
Oil Pressure Warning Light .........................................137
AT OIL TEMP Warning Light (AT Models) .................138
Low Tire Pressure Warning Light (If Equipped) ........138
ABS Warning Light .......................................................140
Brake System Warning Light... ....................................140Low Fuel Warning Light .............................................. 141
Door Open Indicator .................................................... 141
Power Steering Warning Light ................................... 141
TRAC OFF Indicator Light........................................... 142
Vehicle Stability Control (VSC) Warning Light/

Vehicle Stability Control (VSC) Operation 
Indicator Light............................................................ 142
Vehicle Stability Control (VSC) OFF Indicator 
Light ........................................................................... 143
Warning Chimes and Warning Indicator of the 
Keyless Access with Push-Button Start System.... 143
Security Indicator Light............................................... 148
Drive Mode Indicator Light (If Equipped) .................. 148
Select Lever (AT Models Only)/Gear Position 
Indicator ..................................................................... 149
Cruise Control Indicator Light (White/Green)/ 
Cruise Control Warning Light (Yellow) (Models 
without the EyeSight System) .................................. 149
Turn Signal Indicator Lights ....................................... 149
High Beam Indicator Light .......................................... 150
High Beam Assist Indicator (If Equipped) ................. 150
Automatic Headlight Beam Leveler Warning 
Light ............................................................................ 150
LED Headlight Warning Light ..................................... 150
Steering Responsive Headlight OFF Indicator 
Light (If Equipped) ..................................................... 150
Steering Responsive Headlight Warning Light 
(If Equipped)............................................................... 150
Headlight Indicator Light ............................................ 150
Hill Start Assist Indicator Light .................................. 150
BSD/RCTA Warning Indicator (If Equipped).............. 150
BSD/RCTA OFF Indicator (If Equipped) ..................... 150
Icy Road Surface Warning Indicator .......................... 151
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Push-Button Ignition Switch
125
Instruments and Controls3
– CONTINUED –
3-1. Push-Button Ignition Switch■Safety PrecautionsRefer to "Safety Precautions" P94.■ Operating Range for Push-
Button Start System1) Antenna
2) Operating rangeNOTEIf the access key fob is not detected
within the operating range of the
antennas inside the vehicle, the push-
button ignition switch and the engine
start cannot be operated.
 Even when the access key fob is
outside the vehicle, if it is placed too close to the glass, it may be possible to

switch the power or to start the engine.
 Do not leave the access key fob in
the following places. It may become
impossible to operate the push-button
ignition switch and the engine start. - On the instrument panel
- On the floor
- Inside the glove box
- Inside the door trim pocket
- On the rear seat
- On the rear shelf
 When operating the push-button
ignition switch or starting the engine, if
the access key fob battery is
discharged, perform the procedure
described in "Access Key Fob – If
Access Key Fob Does Not Operate
Properly" P325. In such a case,
replace the battery immediately. Refer
to "Replacing Battery of Access Key
Fob" P376.
■ Switching Power Status1) Push-button ignition switchThe power status is switched every time
the push-button ignition switch is pressed.
1. Carry the access key fob, and sit in the
driver’s seat.
2. Shift the shift lever in neutral (MT
models) or the select lever in the “P” posi-
tion (AT models).
3. Press the push-button ignition switch
without depressing the clutch pedal (MT
models) or the brak e pedal (AT models).
Every time the button is pressed, the
power is switched in the sequence of
“OFF”, “ACC”, “ON” and “OFF”.
1
2
306779
1
702836
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Hazard Warning Flasher
127
Instruments and Controls3
– CONTINUED –
3-2. Hazard Warning FlasherThe hazard warning flasher is used to
warn other drivers when you have to park
your vehicle under emergency conditions.
The hazard warning fl asher works with the
ignition switch in any position.
To turn on the hazard warning flasher,
press the hazard warning button on the
instrument panel. All the turn signal lights
and the turn signal indicator lights will
flash. To turn off the flasher, press the
button again.NOTEWhen the hazard warning flasher is on,
the turn signals do not work.
3-3. Meters and GaugesNOTELiquid crystal displays are used in
some of the meters and gauges in the
combination meter. You will find their
indications hard to see if you wear
polarized glasses.■ SpeedometerThe speedometer shows the vehicle
speed.
■ TachometerThe tachometer shows the engine speed
in thousands of revolutions per minute.NOTEThe initial movement of the bar display
that occurs when the ignition switch is
turned to the “ON” position can be
activated or deactivated.
For details, refer to "General settings"
 P161.
901197
CAUTION
 Do not operate the engine with
the pointer of the tachometer in
the red zone. In this range, fuel
injection will be cut by the engine
control module to protect the
engine from overrevving. The
engine will resume running
normally after the engine speed is
reduced below the red zone. Pay extra attention to the engine
speed when the engine is cold, as
the red zone will be lower than
normal.
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Meters and Gauges
129
Instruments and Controls3
– CONTINUED –
■Fuel GaugeThe fuel gauge shows the approximate
amount of fuel remaining in the tank.
When the ignition switch is in the “OFF” or
“ACC” position, the fuel gauge shows “E”
even if the fuel tank contains fuel.
The gauge may move slightly due to fuel
level movement in the tank (e.g., during
braking, turning or acceleration).NOTEYou will see the “ ” sign in the fuel
gauge. This indicates that the fuel filler
lid is located on the right side of the
vehicle.
■ Engine Coolant Temperature
GaugeThe temperature gauge shows engine
coolant temperature when the ignition
switch is in the “ON” position.
The coolant temperature will vary in
accordance with the outside temperature
and driving conditions.
We recommend that you drive moderately
until the pointer of the temperature gauge
reaches near the middle of the range.
Engine operation is optimum with the
engine coolant at this temperature range
and high revving operation when the
engine is not warmed up enough should
be avoided.
■ Outside TemperatureDisplays the outside temperature within
the range of -40°F (-40°C) to 122°F
(50°C). Low outside temperature indicator
comes on when the ambient temperature
is 37°F (3°C) or lower.NOTEThe outside temperature indicator
shows the temperature around the
sensor. However, the temperature may
not be indicated correctly or the
update may be delayed in the follow-
ing conditions.
 While parking or driving at low
speeds
 When the outside temperature
changes suddenly (example: when
going in and out of an underground
parking area or when passing through
a tunnel)
 When starting the engine after being
parked for a certain period of time
306783
B02099
CAUTION
If the pointer exceeds the normal
operating range, safely stop the
vehicle as soon as possible.Refer to "Engine Overheating"
 P319.
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