2018 SUBARU BRZ engine

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4-3. Do-it-yourself maintenance
4
Maintenance and care
BRZ_U (A4450BE-A)
Air conditioning filter
The air conditioning filter must be changed regularly to maintain air
conditioning efficiency.
■Removal method
Vehicles without a keyless access with push button
start system
Turn the engine switch off.
Vehicles with a keyless access with push button start
system
Turn the push-button ignition switch off. Open the glove box. Slide off
the damper.
Push in each side of the glove
box and pull the glove box
toward you to disconnect the
claws.
STEP 1
STEP 2
STEP 3

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4-3. Do-it-yourself maintenance
4
Maintenance and care
BRZ_U (A4450BE-A)
Checking and replacing fuses
If any of the electrical components do not operate, a fuse may have
blown. If this happens, check and replace the fuses as necessary.
Vehicles without a keyless access with push button
start system
Turn the engine switch off.
Vehicles with a keyless access with push button start
system
Turn the push-button ignition switch off.
Open the fuse box cover.
Engine compartment Push the tabs in and lift the lid
off.
Instrument panel Remove the lid.STEP 1
STEP 2

400 4-3. Do-it-yourself maintenance
BRZ_U (A4450BE-A)
Fuse layout and amperage ratings■ Engine compartment
FuseAmpereCircuit
1MIR HTR 7.5 A Outside rear view mirror defoggers
2RDI 25 A Electric cooling fan
3(PUSH-AT) 7.5 A Engine control unit
4ABS NO. 1 40 A ABS
5HEATER 50 A Air conditioning system
6WASHER 10 A Windshield washer
7WIPER 30 A Windshield wipers
8RR DEF 30 A Rear window defogger
9(RR FOG) 10 A
10D FR DOOR 25 A Power window (driver’s side)
11(CDS) 25 A Electric cooling fan
12D-OP 25 A
13ABS NO. 2 25 A ABS
14D FL DOOR 25 A Power window (passenger’s side)
15SPARE See note. Spare fuse

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4-3. Do-it-yourself maintenance
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Maintenance and care
BRZ_U (A4450BE-A)
16SPARE See note. Spare fuse
17SPARE See note. Spare fuse
18SPARE See note. Spare fuse
19SPARE See note. Spare fuse
20SPARE See note. Spare fuse
21ST 7.5 A Starting system
22ALT-S 7.5 A

23(STR LOCK) 7.5 A Steering lock system
24D/L 20 A Power door lock
25ETCS 15 A Engine control unit
26(AT+B) 7.5 A Transmission
27(AM2 NO. 2) 7.5 AKeyless access with push button
start system
28EFI (CTRL) 15 A Engine control unit
29EFI (HTR) 15 AMultiport fuel injection system/
sequential multiport fuel injection
system
30EFI (IGN) 15 A Starting system
31EFI (+B) 7.5 A Engine control unit
32HAZ 15 A
Turn signal lights, hazard warning
flashers
33MPX-B 7.5 AAutomatic air condi
tioning system,
gauge and meters
34F/PMP 20 A Multiport fuel injection system/
sequential multiport fuel injection
system
35IG2 MAIN 30 A
SRS airbag system, engine control
unit
36DCC 30 AInterior light, remote keyless entry
system, main body ECU
FuseAmpereCircuit

402 4-3. Do-it-yourself maintenance
BRZ_U (A4450BE-A)Note
One of each of the following spare fuses are provided: 7.5 A, 10 A, 15
A, 20 A, 25 A, 30 A.
37HORN NO. 2 7.5 A Horn
38HORN NO. 1 7.5 A Horn
39H-LP LH LO 15 A Left-hand headlight (low beam)
40H-LP RH LO 15 A Right-
hand headlight (low beam)
41H-LP LH HI 10 A Left-hand headlight (high beam)
42H-LP RH HI 10 A Right-hand headlight (high beam)
43INJ 30 AMultiport fuel injection system/
sequential multiport fuel injection
system
44H-LP WASHER 30 A
45AM2 NO. 1 40 A Starting system, engine control unit
46EPS 80 A Electric power steering
47A/B MAIN 15 A SRS airbag system
48ECU-B 7.5 A
Remote keyless entry system,
main body ECU
49DOME 20 A Interior light
50IG2 7.5 A Engine control unit
FuseAmpereCircuit

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4-3. Do-it-yourself maintenance
4
Maintenance and care
BRZ_U (A4450BE-A)
■
Instrument panel
FuseAmpereCircuit
1ECU ACC 10 A Main body ECU, outside rear view
mirrors
2P/POINT No.2 15 A Power outlet
3PANEL 10 A Illumination
4TAIL 10 A Tail lights
5DRL 10 A Daytime running light system
6UNIT IG1 10A
7STOP 7.5 A Stop lights
8OBD 7.5 A On-board diagnosis system
9HEATER-S 7.5 A Air conditioning system
10HEATER 10 A Air conditioning system
11FR FOG LH 10 A Left-hand front fog light
12FR FOG RH 10 A Right-hand front fog light
13BK/UP LP 7.5 A Back-up lights
14ECU IG1 10 A ABS, electric power steering
15AM1 7.5 A Starting system
16AMP 15 A Audio system
17AT UNIT 15 A Transmission
18GAUGE 7.5 AGauge and meters, keyless access
with push button start system
19ECU IG2 10 A Engine control unit
20SEAT HTR LH 10 A Left-hand seat heater
21SEAT HTR RH 10 A Right-hand seat heater
22RADIO 7.5 A Audio system
23P/POINT No.1 15 A Power outlet

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4-3. Do-it-yourself maintenance
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Maintenance and care
BRZ_U (A4450BE-A)
WARNING
■
Replacing light bulbs
● Only replace a bulb when it is cool enough to touch. Do not attempt to
replace bulbs while they are hot, as doing so may cause burns.
● Do not touch the glass portion of the light bulb with bare hands. When it is
unavoidable to hold the glass portion, use and hold with a clean dry cloth
to avoid getting moisture and oils on the bulb.
Also, if the bulb is scratched or dropped, it may blow out or crack.
● Fully install the light bulbs and any parts used to secure them. Failure to
do so may result in heat damage, fire, or water entering a light unit. This
may damage the light or cause condensation to build up on the inner side
of the lens.
■ When changing the back-up lights
Stop the engine and wait until the exhaust pipes have cooled down suffi-
ciently. The lights are located near the exhaust pipe and touching a hot
exhaust pipe can cause burns.
■ To prevent damage or fire
Make sure bulbs are fully seated and locked.

When trouble arises5
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BRZ_U (A4450BE-A)
5-1. Essential informationHazard warning flashers .......................... 418
If your vehicle needs to be towed ........................ 419
If you think something is wrong ............................. 426
Fuel pump shut off system ........................... 427
5-2. Steps to take in an emergency
If a warning light turns on or a warning buzzer
sounds... ....................... 428
If a warning message is displayed........................ 440
If you have a flat tire......... 457
If the engine will not start ................................ 471 If the select lever cannot
be shifted from P ............ 474
If you lose your keys ........ 475
If the access key does not operate properly....... 476
If the battery is discharged ..................... 480
If your vehicle overheats ....................... 485
If the vehicle becomes stuck .............................. 488