2020 SUBARU BRZ maintenance

396 4-3. Do-it-yourself maintenance
BRZ_U
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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Maintenance and care
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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

398 4-3. Do-it-yourself maintenance
BRZ_UNote
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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Maintenance and care
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■
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

400 4-3. Do-it-yourself maintenance
BRZ_U
■After a fuse is replaced
●If the lights do not turn on even after the fuse has been replaced, a bulb
may need replacement. ( →P. 401)
● If the replaced fuse blows again, have the vehicle inspected by your
SUBARU dealer.
■ If there is an overload in the circuits
The fuses are designed to blow, protecting the wiring harness from damage.
WARNING
■To prevent system breakdowns and vehicle fire
Observe the following precautions.
Failing to do so may cause damage, and possibly a fire or injury.
●Never use a fuse of a higher amperage rating than indicated, or use any
other object in place of a fuse.
● Always use a genuine SUBARU fuse or equivalent.
● Do not modify the fuse or the fuse box.
CAUTION
■Before replacing fuses
Have the cause of electrical overload determined and repaired by your
SUBARU dealer.

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Light bulbs
You may replace the following bulbs by yourself. The difficulty level
of replacement varies depending on the bulb. If necessary bulb
replacement seems difficult to perform, contact your SUBARU
dealer.
■Preparing a replacement light bulb
Check the wattage of the light bulb being replaced. ( →P. 500)
■ Front bulb locations
Front side
marker lights

402 4-3. Do-it-yourself maintenance
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■Rear bulb locations
■ Inside bulb locations
Back-up lights License
plate
lights
Interior light
Vanity lights
(if equipped)

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Maintenance and care
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Replacing light bulbs
■ Front side marker lights
Turn the steering wheel in the
opposite direction of the light to
be replaced.
Turn the steering wheel to a point
that allows your hand to easily fit
between the tire and fender liner.
Remove the clips and partly
remove the fender liner.
To prevent damage to the vehicle,
cover the tip of the screwdriver
with a rag.
Release the light's claw.
Insert the screwdriver into the
hole. While firmly pushing the
screwdriver forward, move it
towards the inside of the vehicle.
To prevent damage to the vehicle,
wrap the tip of the screwdriver
with a tape.
STEP 1
STEP 2
STEP 3