ECU SUBARU BRZ 2018 Service Manual

178 2-1. Driving procedures
BRZ_U (A4450BE-A)
■Operation of the push-button ignition switch
If the switch is not pressed shortly and firmly, the push-button ignition switch
mode may not change or the engine may not start.
■ Access key battery depletion
→ P. 3 5
■ Conditions affecting operation
→ P. 3 1
■ Note for the “keyless access” entry function
→ P. 3 2
■ If the engine does not start
The engine immobilizer system may not have been deactivated. ( →P. 82)
Contact your SUBARU dealer.
■ Steering lock
After turning the push-button ignition switch off and opening and closing the
doors, the steering wheel will be locked due to the steering lock function.
Operating the push-button ignition switch again automatically cancels the
steering lock. Vehicles with an automatic transmission:
Check that the select lever is securely set
in P. The engine may not start if the select
lever is displaced out of P. The keyless
access with push button start system indi-
cator light (green) will flash quickly.

198
2-1. Driving procedures
BRZ_U (A4450BE-A)
Hor n
■After adjusting the steering wheel
Make sure that the steering wheel is securely locked.
The horn may not sound if the steering wheel is not securely locked.
(→ P. 67)
To sound the horn, press on or
close to the mark.

205
2-2. Instrument cluster
2
When driving
BRZ_U (A4450BE-A)
■
Indicators
The indicators inform the driver of the operating state of the
vehicle’s various systems.
Turn signal indicator
(→ P. 195)Shift position indicator
(→ P. 193)
(Vehicles with a manual transmission)
Headlight high beam
indicator ( →P. 234)Shift-up indicator
(→ P. 193)
(Vehicles with a manual transmission)
(If equipped)
Front fog light indicator
(→ P. 239)
(Blue)
(If equipped)
Low engine coolant
temperature indicator
Security indicator
( → P. 82, 87)Slip indicator
(→ P. 258)
(If equipped)
Keyless access with
push button start sys-
tem indicator light
(→ P. 172)
Hill start assist ON
indicator ( →P. 264)
Shift position and shift
range indicator
(→ P. 186)Traction Control Sys-
tem OFF indicator light
(→ P. 258)
(Vehicles with an automatic transmission)
Upshift/downshift indi-
cator ( →P. 188, 190)Vehicle stability control
(VSC) off indicator
(→ P. 259)
(Vehicles with an automatic transmission)
“SPORT” indicator
(→ P. 187)“TRACK” indicator
(→ P. 259)
(Vehicles with an automatic transmission)
“SNOW” indicator
(→ P. 187)REV indicator
(→ P. 161)
(Vehicles with an automatic transmission)
*2
*1, 3
*1
*1

239
2-3. Operating the lights and windshield wipers
2
When driving
BRZ_U (A4450BE-A)
Fog light switch∗
■Fog lights can be used when
The headlights are on in low beam. The fog lights secure excellent visibility in difficult driving condi-
tions, such as in rain and fog.
Turns the front fog lights off
Turns the front fog lights on
∗: If equipped

259
2-4. Using other driving systems
2
When driving
BRZ_U (A4450BE-A)
“TRACK” mode
Your vehicle is equipped with two types of control modes to accom-
modate 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 characteristics
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 security is retained. “TRACK” mode/Normal mode
The “TRACK” indicator and Vehi-
cle stability control (VSC) off indi-
cator come on when in “TRACK”
mode.
To change back to normal mode
while in “TRACK” mode, press
or the “TRACK” switch.
Turning off both TRAC and Vehicle stability control (VSC) systems
To turn the TRAC and Vehicle stability control (VSC) systems off,
press and hold for more than 3 seconds while the vehicle is
stopped.
The Traction Control System OFF indicator light and the Vehicle sta-
bility control (VSC) off indicator light will come on.
However, on vehicles with an automatic transmission, the brake LSD
function will remain on.
Press the button again to turn the systems back on.

264
2-4. Using other driving systems
BRZ_U (A4450BE-A)
Hill star t assist
The hill start assist system helps to maintain braking force to assist
starting off forward while facing uphill or starting off backward while
facing downhill. As the hill start assist system is initially disabled,
enable the system to make it oper able. The enabled/disabled setting
will be maintained the next time the engine is started.
When the system is enabled,
the hill start assist ON indica-
tor will be illuminated.
■ Enabling the hill start assist system
Park your vehicle in a flat, safe location.
Make sure that the parking brake is securely engaged.
Stop the engine by turning the engine switch to the “LOCK”
position (vehicles without a keyless access with push but-
ton start system) or turning the push-button ignition switch
off (vehicles with a keyless access with push button start
system).
Start the engine and check that the ABS warning light and
slip indicator are off.
Press and hold for
approximately 30 seconds.
Check that both the Vehicle
stability control (VSC) off indi-
cator and Traction Control Sys-
tem OFF indicator illuminate
and then turn off.
STEP 1
STEP 2
STEP 3
STEP 4

271
2-4. Using other driving systems
2
When driving
BRZ_U (A4450BE-A)
■
CFRP (Carbon Fiber Reinforced Plastic) parts
● Due to the properties of the carbon fiber used in CFRP parts, the shade
and density of the carbon fiber weave may vary.
● Cleaning and protecting the CFRP parts: →P. 337, 338
WARNING
■After adjusting the angle of the rear wing
Make sure that the bolts and nuts are tightened securely. If they are not, the
rear wing may come off while driving, possibly leading to an accident.
CAUTION
■Handling of the rear wing
● Do not push or pull the rear wing with excessive force. Doing so may dam-
age the rear wing.
● When waxing the vehicle, be careful not to leave any residual wax
between the wing and wing end-plates.
■ When adjusting the angle of the rear wing
Observe the following precautions. Otherwise, the rear wing may be dam-
aged.
● Make sure to loosen the rear nuts and bolts before adjusting the angle of
the rear wing.
● When installing the rear bolts, make sure that both the left and right bolts
are installed to the same position for the desired angle.
● Do not loosen the nuts and bolts on the front side.

272
BRZ_U (A4450BE-A)
2-5. Driving information
Cargo and luggage
Capacity and distributionCargo capacity depends on the total weight of the occupants.
(Cargo capacity) = (Total load capacity) - (Total weight of occupants)
Steps for Determining Correct Load Limit 
(1)Locate the statement “The combined weight of occupants and cargo should never exceed XXX kg or XXX lbs.” on your vehicle's
placard.
(2)Determine the combined weight of the driver and passengers that will be riding in your vehicle.
(3)Subtract the combined weight of the driver and passengers from XXX kg or XXX lbs.
(4)The resulting figure equals the available amount of cargo and lug- gage load capacity.
For example, if the “XXX” amount equals 1400 lbs. and there will
be five 150 lb passengers in your vehicle, the amount of available
cargo and luggage load capacity is 650 lbs. (1400 - 750 (5 × 150) =
650 lbs.)
(5)Determine the combined weight of luggage and cargo being loaded on the vehicle. That weight may not safely exceed the avail-
able cargo and luggage load capacity calculated in Step 4.
Take notice of the following information about storage precau-
tions, cargo capacity and load:
● Stow cargo and luggage in the trunk whenever possible.
● Be sure all items are secured in place.
● To maintain vehicle balance while driving, position luggage
evenly within the luggage compartment.
● For better fuel economy, do not carry unnecessary weight.

274 2-5. Driving information
BRZ_U (A4450BE-A)
WARNING
■Things that must not be carried in the trunk
The following things may cause a fire if loaded in the trunk:
●Receptacles containing gasoline
●Aerosol cans
■Storage precautions
Observe the following precautions.
Failure to do so may result in death or serious injury.
●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 fold down the rear seats, long items should not be placed
directly behind the front seats.
●Never allow anyone to ride in the enlarged trunk. It is not designed for
passengers. They should ride in their seats with their seatbelts prop-
erly fastened. Otherwise, they are much more likely to suffer death or
serious bodily injury, in the event of sudden braking, sudden swerving
or an accident.
●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
●Secure all items in the occupant compartment, as they may shift and
injure someone during sudden braking, sudden swerving or an acci-
dent.

312 3-4. Using the storage features
BRZ_U (A4450BE-A)
WARNING
■Caution while driving
Observe the following precautions.
Failure to do so may cause an accident resulting in death or serious injury.
●Before driving, place the cup holder in the rear position so that it does not
hinder select lever or shift lever operation.
■ Items unsuitable for the cup holder
Do not place anything other than cups or aluminum cans in the cup holders.
Other items may be thrown out of the holders in the event of an accident or
sudden braking, causing injury. If possible, cover hot drinks to prevent burns.
●When placing the cup holder, make
sure it is facing the correct direction.
Failure to do so will cause the cup
holder to not be secure in the console
tray and hinder select lever or shift
lever operation.
Cup holders/console tray