light SUBARU BRZ 2023 Workshop Manual

Warning and Indicator Lights
132▼Driver’s and front passenger’s
seats
With the ignition switch turned to the “ON”
position, this device reminds the driver
and front passenger to fasten their
seatbelts by illuminating the warning lights
in the locations indicated in the following
illustration and sounding a chime.Driver’s warning light Front passenger’s warning light
▽
Operation
When the ignition switch is turned to the
“ON” position, the dr iver’s and/or front
passenger’s warning light will illuminate,
then it will blink for several seconds. If the
seatbelt of the driver’s seat is not
fastened, the warning chime may make a
peep sound.NOTE If the driver’s and/or front
passenger’s seatbelt(s) are/is not
fastened while driving, the seatbelt
warning system operates as follows
according to the vehicle speed. - The warning light will illuminate
when driving approximately 4 mph
(6 km/h) or less. - The warning light will blink, and

the warning chime will make a peep
sound when driving between
approximately 4 mph (6 km/h) and
13 mph (20 km/h). The warning
chime will stop when the vehicle
stops.
- The warning light will blink, and
the warning chime will sound loudly
when 15 seconds have elapsed
while driving between approxi-
mately 4 mph (6 km/h) and 13 mph
(20 km/h).
- The warning light will blink, and
the warning chime will sound loudly
when driving approximately more
than 13 mph (20 km/h).
 The warning light will turn off and
the warning chime will stop when the
seatbelt is fastened.
If there is no passenger on the front
passenger’s seat, the seatbelt warning
system for the front passenger’s seat will
be deactivated. The front passenger’s
seatbelt warning system monitors whether
or not there is a passenger on the front
passenger’s seat.
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Warning and Indicator Lights
133
Instruments and Controls3
– CONTINUED –
If the seatbelt warning system for the front
passenger’s seat does not function
correctly (e.g., it is activated even when
the front passenger’s seat is empty or it is
deactivated even when the front
passenger has not fastened his/her
seatbelt), take the following actions. 
Ensure that no article is placed on the
seat other than a ch ild restraint system
and its child occupant, although we
strongly recommend th at all children sit in
the rear seat properly restrained.
 Ensure that the backward-forward
position and seatback of front passenger’s
seat are locked into place securely by
moving the seat back and forth.
If still the s eatbelt warning system for front
passenger’s seat does not function
correctly after taking relevant corrective
actions described above, immediately
contact your SUBARU dealer for an
inspection.
▼ Rear passenger’s seats1) Rear seat (left position)
2) Rear seat (right position)With the ignition switch turned to the “ON”
position, the seatbelt warning light and
chime reminds the rear passenger to
fasten their seatbelt by illuminating the
warning lights in the locations indicated in
the above illustration and sounding a
chime.
CAUTION
Observe the following precautions.
Failure to do so may prevent the
device from functioning correctly or
cause the device to fail. Do not install any accessory such
as a table or TV onto the
seatback. Do not allow the rear seat occu-
pant to place his/her hands or
legs on the front passenger’s
seatback, or allow him/her to pull
the seatback. Do not use front seats with their
backward-forward position and
seatback not being locked into
place securely. If any of them are
not locked securely, adjust them
again. For adjusting procedure,
refer to"Front Seats" P30
WARNING
 The driver must check that the all
passengers have fastened their
seatbelts properly since the
seatbelt warning system may not
detect passengers under the
following circumstances.
2
1
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Warning and Indicator Lights
134NOTEThe seatbelt warning system of the
rear seat detects if the seat is occupied
by a passenger. Heavy cargo or large
pets on the rear seat may result in the
activation of the passenger seatbelt
warning light and chime. Fastening the
rear seatbelt prior to loading cargo or
large pets will avoid activating the
passenger seatbelt warning light and
chime.
 When folding the rear seat, ensure
that the seat is empty prior to folding. Items caught between the seat bottom

and seatback, when folded, may
damage the seat surface or activate the
passenger seatbelt warning light and
chime.
▽ Operation
If passengers in the rear seats do not
fasten their seatbelts while the ignition
switch is turned to the “ON” position, the
seatbelt warning lights will illuminate or
blink to indicate that their seatbelts are not
fastened.NOTE If the rear passenger’s seatbelt(s)
are/is still not fast ened while driving,
the seatbelt warning system operates
as follows according to the vehicle
speed. - The warning light will illuminate
when driving approximately 4 mph
(6 km/h) or less.
- When driving approximately
between 4 mph (6 km/h) and 13 mph
(20 km/h), if the seatbelts are not
fastened for 50 seconds, the
seatbelt warning lights will blink and
a warning chime will sound. 
The chime will make a peep sound
for 15 seconds, and it then will
become louder and continue for 35
seconds. The warning light will blink for 50 seconds, then it will illuminate

steadily and the chime will stop.
- When driving more than approxi-
mately 13 mph (20 km/h), if seatbelts
are not fastened for 35 seconds, the
warning lights of the unfastened
seatbelts will blink and a chime will
sound loudly. If the rear seatbelts
are not fastened after 35 seconds,
the blinking warning light will illumi-
nate steadily and the chime will
stop. The warning lights will
continue to illuminate until their
seatbelts are fastened.
 The warning light will turn off and
the warning chime will stop when the
seatbelt is fastened.
- When cushions or child
restraint systems, etc., are
used.- When a child or small adult is
sitting in the seat.
 Observe the following precau-
tions
- Do not apply any strong
impact to the rear seat.- Do not fold the seatback
forward when objects are on
the seat.- Do not spill liquid on the rear
seat. If liquid is spilled, wipe it
off immediately.- Do not remove or disassemble
the rear seat.
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Warning and Indicator Lights
135
Instruments and Controls3
– CONTINUED –
■SRS Airbag System
Warning LightFor details about the components moni-
tored by the warning light, refer to "SRS
Airbag System Monitors" P87.
■ Front Passenger’s Frontal
Airbag ON and OFF Indica -
tors
:Front passenger’s frontal airbag ON
indicator
:Front passenger’s frontal airbag
OFF indicator
The front passenger’s frontal airbag ON
and OFF indicators show you the status of
the front passenger’s SRS frontal airbag.
The indicators are located as shown in the
illustration.
When the ignition switch is turned to the
“ON” position, both the ON and OFF indi-
cators illuminate for 6 seconds during
which time the system is checked.
Following the system check, both indica-
tors turn off for 2 se conds. After that, one
of the indicators illuminates depending on the status of the front passenger’s SRS

frontal airbag determined by the SUBARU
advanced frontal airbag system moni-
toring.
If the front passenger’s SRS frontal airbag
is activated, the passenger’s frontal airbag
ON indicator will illuminate while the OFF
indicator will remain off.
If the front passenger’s SRS frontal airbag
is deactivated, the passenger’s frontal
airbag ON indicator will remain off while
the OFF indicator will illuminate.
With the ignition switch turned to the “ON”
position, if both the ON and OFF indica-
tors remain illuminated or off simultane-
ously even after the system check period,
the system is malfunctioning. Contact
your SUBARU dealer immediately for an
inspection.
WARNING
If the warning light exhibits any of
the following conditions, immedi-
ately stop the vehicle in a safe
place, and consult a SUBARU
dealer. Unless a technician checks
and repairs the system as needed,
the seatbelt pretensioners and/or
the SRS airbag will not operate
properly in the event of a collision,
which may result in injury. Flashing or flickering of the
warning light No illumination of the warning
light when the ignition switch is
first turned to the “ON” position Continuous illumination of the
warning light Illumination of the warning light
while driving
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Warning and Indicator Lights
136■CHECK ENGINE 
Warning Light/
Malfunction Indicator LightIf this light illuminates steadily or blinks
while the engine is running, it may indicate
that there is at least one problem or poten-
tial problem somewhere in the emission
control system.
▼ If the light illuminates constantly
If the light illuminates constantly while
driving or does not turn off after the engine
starts, an emission control system
malfunction has been detected.
We recommend that you have your
vehicle checked by an authorized
SUBARU dealer immediately.
NOTEThis light also illuminates when the
fuel filler cap is not tightened until it
clicks.
If you have recently refueled your vehicle,
the cause of the CHECK ENGINE warning
light/malfunction indicator light coming on
could be a loose or missing fuel filler cap.
Remove the cap and retighten it until it
clicks. Make sure not hing is interfering
with the sealing of the cap. Tightening the
cap will not make the CHECK ENGINE
warning light/malfunction indicator light
turn off immediately. It may take several
driving trips. If the light does not turn off,
take your vehicle to your authorized
SUBARU dealer immediately.
▼ If the light is blinking
If the light is blinking while driving, an
engine misfire condition has been
detected which may damage the emission
control system.
To prevent serious damage to the emis-
sion control system, you should conform
to the following instructions.
 Reduce vehicle speed.
 Avoid hard acceleration.
 Avoid steep uphill grades.
 Reduce the amount of cargo, if
possible. The CHECK ENGINE warning light/
malfunction indicator light may stop

blinking and illuminate steadily after
several driving trips. You should have
your vehicle checked by an authorized
SUBARU dealer immediately.
■ Coolant Temperature
Low Indicator Light/
Coolant Temperature High
Warning Light
CAUTION
If the CHECK ENGINE warning light/
malfunction indicator light illumi-
nates while you are driving, have
your vehicle checked/repaired by
your SUBARU dealer as soon as
possible. Continued vehicle opera-
tion without havi ng the emission
control system checked and
repaired as necessary could cause
serious damage, which may not be
covered by your vehicle’s warranty.
CAUTION
 After turnin g the ignition switch
to the “ON” position, if this indi-
cator light/warnin g light behaves
under any of the following condi-
tions, the electrical system may
be malfunctioning. Contact your
SUBARU dealer immediately for
an inspection.
- It remains blinking in RED.- It remains illuminated in RED for more than 2 seconds.- It remains blinking in RED and
BLUE alternately.
 While driving, if this indicator
light/warning light behaves under
any of the following conditions,
take the specified appropriate
measure listed below.
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Warning and Indicator Lights
137
Instruments and Controls3
– CONTINUED –
This coolant temperature low indicator
light/coolant temper ature high warning
light has the following three functions.
 Illumination in BLUE indicates insuffi-
cient warming up of the engine
 Blinking in RED indicates that the
engine is close to overheating
 Illumination in RED indicates over-
heating condition of the engine
For the system check, this indicator light/
warning light illuminates in RED for
approximately 2 seconds when the igni-
tion switch is turned to the “ON” position.
After that, this indicator light/warning light
changes to BLUE and maintains illumina- tion in
BLUE. This BLUE illuminated light
turns off when the engine is warmed up
sufficiently.
If the engine coolant temperature
increases over the specified range, the
indicator light/warning light blinks in RED.
At this time, the engine is close to over-
heating.
If the engine coolant temperature
increases further, the indicator light/
warning light illuminates in RED continu-
ously. At this time, the engine may be
overheating.
When the indicator light/warning light
blinks in RED or illuminates in RED, safely
stop the vehicle as soon as possible, and
refer to the emergency steps for the
engine overheating. Refer to "Engine
Overheating" P319. After that, have the
system checked by your nearest
SUBARU dealer.
Also, if the indicator light/warning light
often blinks in RED, the electrical system
may be malfunctioning. Contact your
SUBARU dealer for an inspection.
NOTEIf the engine is restarted after a certain
driving condition, this indicator light/
warning light may illuminate in RED.
However, this is not a malfunction if the indicator light/warning light turns

off after a short time.
■ Charge Warning LightIf this light illuminates when the engine is
running, it may indicate that the charging
system is not working properly.
If the light illuminates while driving or does
not turn off after the engine starts, stop the
engine at the first safe opportunity and
check the drive belt. If the belt is loose,
broken or if the belt is in good condition
but the light remains illuminated, contact
your nearest SUBARU dealer immedi-
ately.■ Oil Pressure Warning
LightIf this light illuminates when the engine is
running, it may indicate that the engine oil
pressure is low and the lubricating system
is not working properly.
If the light illuminates while driving or does
not turn off after the engine starts, stop the
- Blinking or illuminated in
RED: 
Safely stop the vehicle as
soon as possible, and refer to
the emergency steps for the
engine overheating. After that,
have the system checked by
your nearest SUBARU dealer.
Refer to "Engine Overheating"
 P319- Blinking in RED and BLUE
alternately: 
The electrical system may be
malfunctioning. Contact your
SUBARU dealer for an inspec-
tion.
CAUTION
Do not operate the engine with the
oil pressure warning light on. This
may cause serious engine damage.
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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
139
Instruments and Controls3
– CONTINUED –
If this light illuminates while driving,
never brake suddenly. Instead, per-
form the following procedure. Oth-
erwise an accident involving
serious vehicle damage and serious
personal injury could occur.1) Keep driving straight ahead while
gradually reducing speed.2) Slowly pull off the road to a safe
place.If this light still illuminates while
driving after adjusting the tire pres-
sure, a tire may have significant
damage and a fast leak that causes
the tire to lose air rapidly. If you
have a flat tire, replace it with a
spare tire as soon as possible.
When a spare tire is mounted or a
wheel rim is replaced without the
original pressure sensor/transmitter
being transferred, the Low tire pres-
sure warning light will illuminate
steadily after blinking for approxi-
mately one minute. This indicates
the TPMS is unable to monitor all
four road wheels. Contact your
SUBARU dealer as soon as possi-
ble for tire and sensor replacement
and/or system resetting. If the light
illuminates steadily after blinking
for approximately one minute,
promptly contact a SUBARU dealer
to have the system inspected.
CAUTION
The tire pressure monitoring sys-
tem is NOT a substitute for manu-
ally checking tire pressure. The tire
pressure should be checked period-
ically (at least monthly) using a tire
gauge. After any change to tire
pressure(s), the tire pressure moni-
toring system will not re-check tire
inflation pressures until the vehicle
is first driven mo re than 25 mph (40
km/h). After adjusting the tire pres-
sures, increase the vehicle speed to
at least 25 mph (40 km/h) to start the
TPMS re-checking of the tire infla-
tion pressures. If the tire pressures
are now above the severe low pres-
sure threshold, the low tire pres-
sure warning light should turn off a
few minutes later. Therefore, be
sure to install the specified size for
the front and rear tires.
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Warning and Indicator Lights
140■ABS Warning LightThe ABS warning light illuminates
together with the brake system warning
light if the EBD system malfunctions. For
further details of the EBD system malfunc- tion warning, refe
r to "Brake System
Warning Light" P140.
NOTEIf the warning light behavior is as
described in the following conditions,
the ABS may be considered normal.
 The warning light illuminates right
after the engine is started but turns off
immediately, remaining off.
 The warning light remains illumi-
nated after the engine has been
started, but it turns off while driving.
 The warning light illuminates during
driving, but it turns off immediately and
remains off.
When driving with an insufficient battery
voltage such as when the engine is jump
started, the ABS warn ing light may illumi-
nate. This is due to the low battery voltage
and does not indicate a malfunction.
When the battery becomes fully charged,
the light will turn off.
■ Brake System
Warning LightThis light has the following functions.
▼ Parking brake warning
The light illuminates with the parking
brake applied while the ignition switch is in
the “ACC” or “ON” position. It turns off
when the parking brake is fully released.
▼ Brake fluid level warningThis light illuminates when the brake fluid
level has dropped to near the “MIN” level
of the brake fluid reservoir with the ignition
switch in the “ON” position and with the
parking brake fully released.
CAUTION
 If any of the following conditions
occur, we recommend that you
have the ABS (Anti-Lock Brake
System) repaired at the first avail-
able opportunity by your
SUBARU dealer.
- The warning light does not
illuminate when the ignition
switch is turned to the “ON”
position.- The warning light illuminates
when the ignition switch is
turned to the “ON” position,
but it does no t turn off even
after starting the vehicle.- The warning light illuminates
during driving.
 When the warning light is on (and
brake system warning light is off),
the ABS function shuts down;
however, the conventional brake
system continues to operate
normally.
WARNING
 Driving with the brake system
warning light on is dangerous.
This indicates your brake system
may not be working properly. If
the light remains illuminated,
have the brakes inspected by a
SUBARU dealer immediately. If at all in doubt about whether the
brakes are operating properly, do
not drive the vehicle. Have your
vehicle towed to the nearest
SUBARU dealer for repair.
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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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