2020 SUBARU BRZ radiator cap

356
4-3. Do-it-yourself maintenance
BRZ_U
Engine compartment
Battery (→P. 364)
Engine oil level dipstick (→ P. 357)
Brake fluid reservoir (→ P. 362)
Engine oil filler cap (→ P. 358)Washer fluid tank
(→ P. 368)
Electric cooling fans
Condenser ( →P. 362)
Radiator ( →P. 362)
Engine coolant reservoir (→ P. 360)
Fuse box ( →P. 393)

360 4-3. Do-it-yourself maintenance
BRZ_U
Engine coolantThe coolant level is satisfactory if it is between the “FULL” and “LOW”
lines on the reservoir when the engine is cold. Reservoir cap
“FULL”
“LOW”
If the level is on or below the
“LOW” line, add coolant up to the
“FULL” line.
CAUTION
■To prevent serious engine damage
Check the oil level on a regular basis.
■ When replacing the engine oil
●Be careful not to spill engine oil on the vehicle components.
● Avoid overfilling, or the engine could be damaged.
● Check the oil level on the dipstick every time you fill the oil.
● Be sure the engine oil filler cap is properly tightened.
■If the coolant level drops within a short time after replenishing
Visually check the radiator, hoses, engine coolant filler cap, radiator cap,
drain cock and water pump.
If you cannot find a leak, have your SUBARU dealer pressure test the cap
and check for leaks in the cooling system.

361
4-3. Do-it-yourself maintenance
4
Maintenance and care
BRZ_U
■
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.

482 5-2. Steps to take in an emergency
BRZ_UThe 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
483
5-2. Steps to take in an emergency
BRZ_U
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.

553
Alphabetical index
BRZ_U
Light bulbs
Replacing ............................. 401
Wattage ................................ 500
Lights Door courtesy lights.............. 302
Engine switch light................ 302
Fog light switch..................... 239
Hazard light switch ............... 414
Hazard warning flasher switch ................................. 414
Headlights switch ................. 233
Interior light switch................ 303
Replacing light bulbs ............ 401
Trunk light............................... 48
Turn signal lever ................... 195
Vanity lights .......................... 310
Wattage ................................ 500
Welcome lighting function .... 236
Load capacity .......................... 273
Maintenance Do-it-yourself maintenance ...................... 351
General maintenance ........... 347
Maintenance data................. 488
Maintenance requirements ... 344
Manual air conditioning system ................................... 282
Manual transmission .............. 192
Meter Auto dimmer cancel function .............................. 201
Indicators.............................. 203
Instrument panel light control......................... 201
Meters .................................. 199
Multi-information
display ........................ 210, 218
Settings ........................ 210, 228
Warning lights....................... 424
Warning messages............... 436
Microphone .............................. 301 Mirrors
Inside rear view mirror.............69
Outside rear view mirror defogger..............................298
Outside rear view mirrors ........71
Side mirror heater .................298
Side mirrors .............................71
Vanity mirrors ........................310
Multi-information display Drive information ...................221
G-force display ......................224
Language ..............................228
Multi-information display.........................210, 218
Settings .................................228
Trip information .....................211
Warning messages ...............436
Noise from under vehicle ..........16
Odometer ..........................210, 230
Oil Engine oil ..............................357
Opener Engine hood ..........................354
Fuel filler lid .............................78
Trunk lid ..................................46
Outside rear view mirrors Adjusting and folding ...............71
Outside temperature display ............................210, 230
Overheating, Engine ................481
Paddle shift levers ...................188
Parking brake ...........................197
Parking lights Switch....................................233
Power outlets ...........................312
Power windows ..........................74
Radiator ....................................362
Rear seats...................................56
M
N
O
P
R