engine coolant SUBARU BRZ 2018 User Guide

365
4-3. Do-it-yourself maintenance
4
Maintenance and care
BRZ_U (A4450BE-A)
■
Coolant selection
Only use SUBARU Super Coolant or similar high-quality ethylene glycol-
based non-silicate, non-amine, non-nitr ite, and non-borate coolant with long-
life hybrid organic acid technology.
SUBARU Super Coolant is a mixture of 50% coolant and 50% deionized
water. (Enabled: -31 °F [-35 °C])
For more details about engine cool ant, contact your SUBARU dealer.
WARNING
■When the engine is hot
Do not remove the radiator cap.
The cooling system may be under pressure and may spray hot coolant if the
cap is removed, causing serious injuries, such as burns.
CAUTION
■When adding engine coolant
Coolant is neither plain water nor stra ight antifreeze. The correct mixture of
water and antifreeze must be used to provide proper lubrication, corrosion
protection and cooling. Be sure to read the antifreeze or coolant label.
■ If you spill coolant
Be sure to wash it off with water to prevent it damaging parts or paint.

426
5-1. Essential information
BRZ_U (A4450BE-A)
If you think something is wrong
If you notice any of the following symptoms, your vehicle probably
needs adjustment or repair. Contact your SUBARU dealer as soon as
possible.
■Visible symptoms
● Fluid leaks under the vehicle
(Water dripping from the air conditioning after use is normal.)
● Flat-looking tires or uneven tire wear
● Vehicles with a monochrome multi-information display: The
engine coolant temperature gauge needle continually points
higher than normal
● Vehicles with a color multi-information display: The high
engine coolant temperature warning light flashes or illumi-
nates
■ Audible symptoms
● Changes in exhaust sound
● Excessive tire squeal when cornering
● Strange noises related to the suspension system
● Pinging or other noises related to the engine
■ Operational symptoms
● Engine missing, stumbling or running rough
● Appreciable loss of power
● Vehicle pulls heavily to one side when braking
● Vehicle pulls heavily to one side when driving on a level road
● Loss of brake effectiveness, spongy feeling, pedal almost
touches the floor

5
When trouble arises
429
5-2. Steps to take in an emergency
BRZ_U (A4450BE-A)
Stop the vehicle immediately.
The following warning indicates the possibility of damage to the vehi-
cle that may lead to an accident. Immediately stop the vehicle in a
safe place and contact your SUBARU dealer.
Warning lightWarning light/Details
Charging system warning light Indicates a malfunction in the vehicle’s charging system.
Low engine oil pressure warning light Indicates that the engine oil pressure is too low.
(Flashes or illu- minates in red) High engine coolant temperature warning light (if
equipped)
Indicates that the engine is almost overheating. ( →P. 485)
As the engine coolant temperature increases, this warning
light will change from flashing to constantly illuminated.

5
When trouble arises
485
5-2. Steps to take in an emergency
BRZ_U (A4450BE-A)
If your vehicle overheats
Correction proceduresStop the vehicle in a safe place and turn off the air condition-
ing system, and then stop the engine.
If you see steam: Carefully lift the hood after the steam subsides.
If you do not see steam: Carefully lift the hood.
After the engine has cooled
down sufficiently, inspect the
hoses and radiator core (radia-
tor) for any leaks.
Radiator
Cooling fans
If a large amount of coolant leaks,
immediately contact your
SUBARU dealer.
The following may indicate that your vehicle is overheating.
●Vehicles with a monochrome multi-information display: The
engine coolant temperature gauge ( →P. 199) enters the red
zone or a loss of engine power is experienced (for example, the
vehicle speed does not increase).
Vehicles with a color multi-information display: The high engine
coolant temperature warning light ( →P. 203) flashes or illumi-
nates or a loss of engine power is experienced (for example, the
vehicle speed does not increase).
● Steam comes out from under the hood.
STEP 1
STEP 2
STEP 3

486 5-2. Steps to take in an emergency
BRZ_U (A4450BE-A)The coolant level is satisfactory if
it is between the “FULL” and
“LOW” lines on the reservoir.
Reservoir
“FULL”
“LOW”
Radiator cap
Add coolant if necessary.
Water can be used in an emer-
gency if coolant is unavailable.
Start the engine and turn the air conditioning system on to
check that the radiator cooling fans operate and to check for
coolant leaks from the radiator or hoses.
The fans operate when the air conditioning system is turned on
immediately after a cold start. Confirm that the fans are operating by
checking the fan sound and air flow. If it is difficult to check these,
turn the air conditioning system on and off repeatedly.
(The fans may not operate in freezing temperatures.)
If the fans are not operating: Stop the engine immediately and contact your SUBARU
dealer.
If the fans are operating: Have the vehicle inspected at the nearest SUBARU dealer.
STEP 4
STEP 5
STEP 6
STEP 7

5
When trouble arises
487
5-2. Steps to take in an emergency
BRZ_U (A4450BE-A)
WARNING
■
To prevent an accident or injury when inspecting under the hood of
your vehicle
● If steam is seen coming from under the hood, do not open the hood until
the steam has subsided. The engine compartment may be very hot, caus-
ing serious injuries such as burns.
● Keep hands and clothing (especially a tie, a scarf or a muffler) away from
the fans and belts. Failure to do so may cause the hands or clothing to be
caught, resulting in serious injury.
● Do not loosen the radiator cap and the coolant reservoir cap while the
engine and radiator are hot.
Serious injury, such as burns, may result from hot coolant and steam
released under pressure.
CAUTION
■When adding engine coolant
Wait until the engine has cooled down before adding engine coolant.
When adding coolant, do so slowly. Adding cool coolant to a hot engine too
quickly can cause damage to the engine.
■ To prevent damage to the cooling system
Observe the following precautions:
● Avoid contaminating the coolant with foreign matter (such as sand or dust
etc.).
● Do not use any coolant additives.

498 6-1. Specifications
BRZ_U (A4450BE-A)
Cooling system
Ignition system
CapacityVehicles with an automatic transmission
7.9 qt. (7.5 L, 6.6 Imp. qt.)
Vehicles with a manual transmission 7.6 qt. (7.2 L, 6.3 Imp. qt.)
Coolant type Use either of the following.
• SUBARU Super Coolant
• Similar high-quality ethylene glycol-based non-silicate, non-amine, non-nitrite, and non-borate
coolant with long-life hybrid organic acid technol-
ogy
Do not use plain water alone.
Spark plug
Make
Gap DENSO ZXE27HBR8
0.031 in. (0.8 mm)
CAUTION
■
Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust gap when tuning engine.

515
6-1. Specifications
6
Vehicle specifications
BRZ_U (A4450BE-A)
Warning: The temperature grades of a tire assume that it is properly
inflated and not overloaded.
Excessive speed, underinflation, or excessive loading, either sepa-
rately or in combination, can cause heat buildup and possible tire fail-
ure.
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation
pressure Tire pressure when the vehicle has been
parked for three hours or more, or has not
been driven more than 1 mile or 1.5 km under
that condition
Maximum inflation
pressure The maximum cold inflated pressure to which a
tire may be inflated, shown on the sidewall of
the tire
Recommended
inflation pressure Cold tire inflation pressure recommended by a
manufacturer.
Accessory weight The combined weight (in excess of those stan-
dard items which may be replaced) of auto-
matic transmission, power steering, power
brakes, power windows, power seats, radio
and heater, to the extent that these items are
available as factory-installed equipment
(whether installed or not)
Curb weight The weight of a motor vehicle with standard
equipment, including the maximum capacity of
fuel, oil and coolant, and if so equipped, air
conditioning and additional weight optional
engine
Maximum loaded
vehicle weight The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight

556 Alphabetical index
BRZ_U (A4450BE-A)
Brightness controlInstrument panel light control .................................201
Care Alcantara
®............................. 346
Alloy wheels .......................... 337
Exterior.................................. 336
Interior ................................... 342
Seatbelts ............................... 343
Cargo capacity ......................... 272
Chains ....................................... 279
Child restraint system
Booster seats, definition ............................. 141
Booster seats, installation ........................... 145
Convertible seats, definition ............................. 141
Convertible seats, installation ........................... 145
Front passenger occupant detection system .................131
Infant seats,
definition ............................. 141
Infant seats, installation ........................... 145
Installing CRS with LATCH anchors .................. 146
Installing CRS with
seatbelts ............................. 148
Installing CRS with top tether straps .................. 151 Child safety
Airbag precautions ................ 125
Battery precautions ....... 371, 483
Child restraint system ........... 141
How your child should wear the seatbelt .................. 62
Installing child restraints........ 145
Power window lock switch ...... 74
Power window precautions ........................... 77
Removed key battery precautions ......................... 395
Seat heater precautions ........ 319
Seatbelt guide ......................... 61
Seatbelt precautions ............... 64
Trunk precautions ................... 49
Cleaning Alcantara
®............................. 346
Alloy wheels .......................... 337
Exterior.................................. 336
Interior ................................... 342
Seatbelts ............................... 343
Clock ......................................... 315
Condenser ................................ 366
Console tray ............................. 311
Coolant Capacity ................................ 498
Checking ............................... 364
Cooling system Engine overheating ............... 485
Cruise control .......................... 243
Cup holders .............................. 311
Curtain airbags .......................... 93
Customizable features ............ 522
Daytime running light
system .................................... 235
Defogger Rear window ......................... 302
Side mirror ............................ 302
Dimensions .............................. 492
Dinghy towing .......................... 283
C
D

557
Alphabetical index
BRZ_U (A4450BE-A)
Display
Drive information .................. 221
Multi-information display ........................ 210, 218
Trip information .................... 211
Warning messages............... 440
Do-it-yourself maintenance .... 355
Door courtesy lights Door courtesy lights.............. 306
Wattage ................................ 504
Doors Door lock .................... 25, 38, 43
Door windows ......................... 74
Side mirrors ............................ 71
Drive information .................... 221
Driver's seatbelt reminder light ........................ 432
Driving
Break-in tips ......................... 159
Correct posture....................... 91
Procedures ........................... 156
Winter drive tips.................... 277
Electric power steering........... 257
Emergency, in case of If the access key does not operate properly........... 476
If the engine will not start...... 471
If the select lever cannot be shifted from P ................ 474
If the vehicle has a discharged battery ............. 480
If the warning buzzer sounds ............................... 428
If the warning light turns on .............................. 428
If the warning message is displayed ........................ 440
If you have a flat tire ............ 457
If you lose your keys............. 475
If you think something is wrong ................................. 426 If your vehicle becomes
stuck ...................................488
If your vehicle needs to be towed .............................419
If your vehicle overheats .......485
Engine
Compartment ........................360
Engine hood ..........................358
Engine switch ................172, 182
How to start the engine .........................172, 182
Identification number .............493
If the engine will not start ......471
Ignition switch................172, 182
Overheating...........................485
Engine coolant Capacity ................................498
Checking ...............................364
Engine coolant temperature gauge ........199, 223
Engine hood .............................358
Engine immobilizer system.......82
Engine oil Capacity ................................496
Checking ...............................361
Preparing and checking before winter .......................277
Engine switch ...................172, 182
Engine switch light ..................306
Event data recorder ...................18
Floor mat...................................320
Fluid Brake .....................................366
Washer ..................................372
Fog lights
Switch....................................239
Front fog lights Switch....................................239
Front passenger occupant detection system ...................131
E
F