ECU SUBARU BRZ 2022 Workshop Manual

Starting and Stopping Engine
230When the warm-up is completed, the
engine speed lowers automatically.
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
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.
B5=B8.ERRN 230 ページ ２０２１年７月５日　月曜日　午後>1時>1>1分

Automatic Transmission
2367-6. Automatic TransmissionThe automatic transmission is electroni-
cally controlled and provides 6 forward
speeds and 1 reverse speed. It also has a
manual mode.
NOTEWhen the engine coolant tempera-
ture is still low, the transmission will
shift at higher engine speeds than
when the coolant temperature is suffi-
ciently high in order to shorten the
warm-up time and improve driveability.
The gearshift timing will automaticallyshift to the normal timing after the
engine has warmed up.

Immediately after transmission fluid
is replaced, you may feel that the trans-
mission operation is somewhat
unusual. This results from invalidation
of data which the on-board computer
has collected and stored in memory to
allow the transmission to shift at the
most appropriate times for the current
condition of your vehicle. Optimized
shifting will be restored as the vehicle
continues to be driven for a while.
 Place the shift boot to the original
position after it is lifted. If the shift lever
is operated with the shift boot in the
rolled up position, the shift boot may
have tension and it may disturb the
shift lever operation.
 When the vehicle is idling at high
rpm in order to warm up, and the
vehicle is on a slippery road, the trans-
mission may automatically shift to 2nd
gear for stopping and starting off.
WARNING
Do not shift from the “P” or “N”
position into the “D” or “R” position
while depressing the accelerator
pedal. This may cause the vehicle to
lurch forward or backward.
CAUTION
 Observe the following precau-
tions. Failure to observe these
precautions could cause damage
to the transmission.
- Shift into the “P” or “R” posi-
tion only after the vehicle has
completely stopped.- Do not shift from the “D” posi- tion into the “R” position or
vice versa until the vehicle
has completely stopped.
Do not race the engine for more
than 5 seconds in any position
except the “N” or “P” position
when the brake is applied or when
chocks are used in the wheels.
This may cause the transmission
fluid to overheat.Never move the vehicle rearward
by inertia with the select lever set
in a forward driving position or
move the vehicle forward by
inertia with the select lever set in
the “R” position. Doing so may
result in an unexpected accident
or malfunction.When parking the vehicle, first
securely apply the parking brake
and then place the select lever in
the “P” position. Do not park for a
long time with the select lever in
any other position as doing so
could result in a dead battery.
B5=B8.ERRN 236 ページ ２０２１年７月５日　月曜日　午後>1時>1>1分

Automatic Transmission
237
Starting and Operating7
– CONTINUED –
■
Select Lever : Shift with the brake pedal depressed
and push-button ignition switch in the “ON”
position. When shifting between “P” and “D”,
depress the brake pedal and securely stop
the vehicle before shifting.
The select lever has four positions, “P”,
“R”, “N”, “D” and also has a manual gate
for using the manual mode.NOTETo protect the engine while the select
lever is in the “P” or “N” position, the
engine is controlled so that the engine
speed may not become too high even
if the accelerator pedal is depressed
hard. ▼
P (Park)
This position is for parking the vehicle and
starting the engine. In this position, the
transmission is me chanically locked to
prevent the vehicle from rolling freely.
When you park the vehicle, first apply the
parking brake, then shift into the “P” posi-
tion. Do not hold the vehicle with only the
mechanical friction of the transmission.
To shift the select lever from the “P” to any
other position, you should depress the
brake pedal fully then move the select
lever. This prevents the vehicle from
lurching when it is started.
▼R (Reverse)
This position is for backing the vehicle. To
shift from the “N” to “R” position, stop the
vehicle completely then move the lever to
the “R” position.
▼N (Neutral)
This position is for restarting a stalled
engine. In this position, the transmission is
neutral, meaning that the wheels and
transmission are not locked. Therefore,
the vehicle will roll freely, even on the
slightest incline unless the parking brake
or foot brake is applied. ▼
D (Drive)
This position is for normal driving. The
transmission shifts automatically into a
suitable gear according to the vehicle
speed and the acceleration you require.
Also, while driving up and down a hill, the
transmission assists and controls the
driving performance and engine braking
while corresponding to the road grade.
When more acceleration is required in “D”
position, depress the accelerator pedal
fully to the floor and hold that position. The
transmission will automatically downshift.
When you release the pedal, the transmis-
sion will return to the original gear posi-
tion.
To use the manual mode, move the lever
from this position into the manual gate.
If one of the shift paddles behind the
steering wheel is operated while driving in
the “D” position, the transmission will
temporarily switch to the manual mode. In
this mode, you can shift into any gear
702768
WARNING
Do not drive the vehicle with the
select lever in the “N” (neutral)
position. Engine braking has no
effect in this condition and the risk
of an accident is consequently
increased.
B5=B8.ERRN 23 ページ ２０２１年７月５日　月曜日　午後>1時>1>1分

TRACK Mode
250Stability Control (VSC) system and TRAC
system except under above-mentioned
situations.NOTEWhen the switch has been pressed
to deactivate the Vehicle Stability
Control (VSC) system and TRAC
system, the Vehicle Stability Control
(VSC) system and TRAC system auto-
matically reactiva tes itself the next
time the ignition swit ch is turned to the
“OFF” position and the engine is
restarted.
 If the switch is held down for 30
seconds or longer, the indicator light
turns off, the Vehicle Stability Control
(VSC) system is activated, and the
system ignores any further pressing of
the switch. To make the switch usable
again, turn the igni tion switch to the
“OFF” position and restart the engine.
 When the switch is pressed to deac-
tivate the Vehicle Stability Control
(VSC) system and TRAC system, the
vehicle’s running performance is
comparable with that of a vehicle that
does not have a Vehicle Stability
Control (VSC) system and TRAC
system. Do not deactivate the Vehicle
Stability Control (VSC) system and
TRAC system except when absolutely
necessary. 
Even when the TRAC system is
deactivated, compon ents of the brake
control system may still activate. When
the brake control system is activated,
the Vehicle Stability Control (VSC)
operation indicator light flashes.
7-14. TRACK Mode■
TRACK Mode
Your vehicle is equipped with two types of
control modes to accommodate various
driving preferences. The control modes
can be selected with the TRACK switch.
Normal mode allows secure and smooth
normal driving. When the switch is
pressed and held for 1 second or more,
TRACK mode is activated. Control char-
acteristics such as the Vehicle Stability
Control (VSC) and TRAC are adjusted to
afford maneuverability closer to what a
driver may desire, while a sense of secu-
rity is retained.
▼
TRACK mode/Normal mode
702840
B5=B8.ERRN 250 ページ ２０２１年７月５日　月曜日　午後>1時>1>1分

BSD/RCTA (If Equipped)
276
Mexico-spec. models■
Handling of Radar SensorsRadar sensorsThe radar sensors, one on each side of
the vehicle, are mounted inside the rear
bumper.
702884
Certificado de homologacion:
RLVCOSR15-0442
Continental SRR3-A
Este equipo opera a titulo secundario,
consecuentemente, debe aceptar
interferencias perjudiciales incluyendo
equipos de la misma clase y puede no
causar interferencias a sistemas operando
a titulo primario.
702185702807
CAUTION
To ensure correct operation of the
BSD/RCTA, observe the following
precautions.Always keep the bumper surface
near the radar sensors clean.Do not affix any stickers or other
items on the bumper surface near
the radar sensors. For details,
consult your SUBARU dealer.Do not modify the bumper near
the radar sensors.Do not paint the bumper near the
radar sensors.
702808
B5=B8.ERRN 26 ページ ２０２１年７月５日　月曜日　午後>1時>1>1分

Loading Your Vehicle
298
NOTEFor better fuel economy, do not carry
unneeded cargo.
■
Vehicle Capacity Weight
The load capacity of your vehicle is deter-
mined by weight, not by available cargo
space. The maximum load you can carry
in your vehicle is shown on the tire infla-
tion pressure label attached to the driver’s
side center pillar. It includes the total
Stow cargo and luggage in the
trunk whenever possible.To prevent cargo and luggage
from sliding forward during
braking, do not stack anything in
the enlarged trunk. Keep cargo
and luggage low, as close to the
floor as possible.When you carry something inside
the vehicle, secure it whenever
you can to prevent it from being
thrown around inside the vehicle
during sudden stops, sharp turns
or in an accident.Secure long items properly to
prevent them from shooting
forward and causing serious
injury during a sudden stop.Never exceed the maximum load
limit. If you do, some parts on
your vehicle can break, or it can
change the way your vehicle
handles. This could result in loss
of control and cause personal
injury. Also, overloading can
shorten the life of your vehicle.
Do not place cargo or luggage in
or on the following locations as
the item may get under the clutch,
brake, or accelerator pedal and
prevent the pedals from being
depressed properly, block the
driver’s vision, or hit the driver or
passengers, causing an accident:
- At the feet of the driver- On the front passenger or rear
seats (when stacking items)- On the rear shelf- On the instrument panel- On the dashboard
CAUTION
Do not carry spray cans, containers
with flammable or corrosive liquids
or any other dangerous items inside
the vehicle.
D00250801321
B5=B8.ERRN 2 ページ ２０２１年７月５日　月曜日　午後>1時>1>1分

Flat Tires
304
NOTEContact a SUBARU dealer when jack-
ing up the vehicle using a garage jack.
1. Park on a hard, level surface, when-
ever possible, then stop the engine.
2. Set the parking brake securely and
shift the shift lever in reverse (MT models)
or the select lever to the “P” (Park) posi-
tion (AT models).
3. Turn on the hazard warning flasher
and unload all occupants and luggage
from the vehicle.
4. Put wheel blocks at the front and rear
of the tire diagonally opposite the flat tire.5. Take out the jack, jack handle and
wheel nut wrench.
The tools and the spare tire are stored
under the floor of the trunk. Refer to
"Maintenance Tools"
P302.
NOTEMake sure that the jack is well lubri-
cated before using it.
6. Models with spare tire: Take out the
under-floor storage compartment and turn
the attaching bolt counterclockwise, then
take the spare tire out.
 Always turn off the engine before
raising the flat tire off the ground
using the jack. Never swing or
push the vehicle supported with
the jack. The jack can come out of
the jacking point due to a jolt and
this can result in serious injury or
death. All passengers must exit the
vehicle before you raise it with
the jack. Raising the vehicle with
someone inside of it could result
in serious injury or death.Do not start the vehicle while it is
supported by the jack. Doing so
could result in serious injury or
death.
CAUTION
Do not hit and bend the disc rotor
backing plate when removing and
installing the tire. A bent backing
plate may scrape against the disc
rotor and cause noise while the
vehicle is in motion.
901050
901295
B5=B8.ERRN 304 ページ ２０２１年７月５日　月曜日　午後>1時>1>1分

Flat Tires
30612. Put on the spare tire. Replace the
wheel nuts. Tighten them by hand.
13. Turn the jack handle counterclockwise
to lower the vehicle.14. Use the wheel nut wrench to securely
tighten the wheel nuts to the specified
torque, following the tightening order in
the illustration.
For the wheel nut tightening torque, refer
to "Tires"
P385. Never use your foot on
the wheel nut wrench or a pipe extension
on the wrench because you may exceed
the specified torque. Have the wheel nut
torque checked at the nearest automotive
service facility.
1) Support holder15. Models with spare tire: Store the flat
tire in the spare tire compartment. Install
with the support holder facing upward and
secure the flat tire by firmly tightening the
attaching bolt.
NOTEIf you cannot fix the fl at tire firmly, try
turning the support holder upside
down.
16. Store the jack, jack handle and wheel
nut wrench in their storage locations.■
Sealing a Flat Tire (Models
with the Flat Tire Repair Kit)
CAUTION
If the threaded part was damaged,
you should immediately contact
your SUBARU dealer.
WARNING
Do not use oil or grease on the
wheel studs or nuts when the spare
tire is installed. This could cause
the nuts to become loose and lead
to an accident.
�
14
25
3
600192
1901296
WARNING
Never place a tire or tire changing
tools in the passenger compartment
after changing wheels. In a sudden
stop or collision, loose equipment
could strike occupants and cause
injury. Store the tire and all tools in
the proper place.
WARNING
Read these instructions and
warnings carefully before sealing a
flat tire.
B5=B8.ERRN 306 ページ ２０２１年７月５日　月曜日　午後>1時>1>1分

Flat Tires
308Do not use tire chains on a sealed
tire.Do not tow a trailer.If used for a purpose other than
sealing a flat tire, the flat tire
repair kit may cause a severe
accident or injury due to the fact
that compressed air can act as an
explosive or propellant.Safely park your vehicle on the
roadside so that you do not
obstruct the flow of traffic and so
that you are able to seal the flat
tire without being in danger.Apply the parking brake, even if
the vehicle is parked on a level
road, to make sure that the
vehicle will not move.Stop the engine before sealing
the flat tire.Turn on the hazard warning
flasher while sealing the flat tire.Do not attempt to remove foreign
objects like nails or screws that
have penetrated the tire. Leave
them as they are. Never leave the flat tire repair kit
unattended while in use.Only one tire can be repaired with
one bottle of sealant.
The tires can be repaired when
the ambient temperature is −22 °F
( − 30 °C) or higher.
CAUTION
 Remember that the flat tire repair
kit only provides temporary
mobility. Regulations concerning
tire repair after usage of flat tire
repair kit may di ffer from country
to country. We recommend that
you consult your SUBARU dealer
or tire dealer for advice. Store the flat tire repair kit safely
and secure it under the floor of
the trunk. Storing it anywhere in
the passenger compartment is
not advisable because it could
strike an occupant in the event of
a sudden stop or collision and
cause injury. Use the flat tire repair kit with
original vehicle tires only.Do not keep the air compressor
operating for more than 10
minutes, otherwise there is a risk
of overheating.The temperature of the air
compressor may become high.
Be careful not to burn yourself.
When raining, take measures to
prevent the air compressor from
being exposed directly to the
rain. Exposing to rain may cause
a malfunction.Do not use air compressors other
than the one in the repair kit.
Using an air compressor other
than the one in the repair kit may
damage the tires.Do not disassemble or modify the
air compressor to enable the use
of a power supply or a battery
other than DC 12 V.If a temporary puncture repair is
performed with the repair kit, the
Tire Pressure Monitoring System
(TPMS) (if equipped) may not
operate normally.
B5=B8.ERRN 30 ページ ２０２１年７月５日　月曜日　午後>1時>1>1分

Towing
321
In Case of Emergency9
– CONTINUED –
cover. Then, pull the lower cover to
separate it.1) Slit3 Remove the covers from the bumper.
When removing the upper side cover,
align the hook portion of the cover with the
slit and push it through the slit to remove
the cover. 4 Screw the towing hook into the
threaded hole until the threads can no
longer be seen.
5 Tighten the towing hook securely using the wheel nut wrench. After towing, remove the towing hook from
the vehicle and stow it in the under-floor
storage compartment.
Fit the towing hook cover on the bumper.
Rear towing hook:
1 Take out the screwdriver, towing hook,
wheel nut wrench from the under-floor
storage compartment.
CAUTION
Do not apply excessive force when
removing the covers. Otherwise,
they may be deformed or damaged.
1
901297
901203901204
WARNING
Do not use the towing hook
except when towing your vehicle.Be sure to remove the towing
hook after towing. Leaving the
towing hook mounted on the
vehicle could interfere with
proper operation of the SRS
airbag system in a frontal colli-
sion.
CAUTION
To prevent deformation to the
bumper and the towing hook, do not
apply excessive load to the towing
hook.
B5=B8.ERRN 321 ページ ２０２１年７月５日　月曜日　午後>1時>1>1分