Get Maintenance and care -> Checking and replacing fuses Guide for Toyota Prius 4 Door Third Generation (2010-2015)

4-3. Do-it-yourself m aintenanc e

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.

STEP

1

Turn the “POWER” switch off.

Vehicles with Solar Ventilation System: Turn the Solar Ventilation

System off and make sure not to operate the Remote Air Condi-

tioning System.

STEP

2

Open the fuse box cover.

Engine compartment

Push the tab in and lift the lid

off.

When closing, first hook the lid

onto the two rear tabs.

ITO43P127

Left side instrument panel

Remove the lid.

STEP

3

After a system failure, see “Fuse layout and amperage rat-

ings” (P. 459) for details about which fuse to check.

456

4-3. Do-it-yourself maintenance

STEP

4

Remove the fuse.

Only type A fuse can be

removed using the pullout

tool.

STEP

5

Check if the fuse is blown.

Type A

Normal fuse

Blown fuse

1

2

Replace the blown fuse with a

new fuse of an appropriate

amperage rating. The amper-

age rating can be found on the

fuse box lid.

4

ITY42C012

457

4-3. Do-it-yourself maintenance

Type B

Normal fuse

Blown fuse

Replace the blown fuse with a

new fuse of an appropriate

amperage rating. The amper-

age rating can be found on the

fuse box lid.

Type C

Normal fuse

Blown fuse

Replace the blown fuse with a

new fuse of an appropriate

amperage rating. The amper-

age rating can be found on the

fuse box lid.

ITO43P161

458

4-3. Do-it-yourself maintenance

Fuse layout and amperage ratings

■ Engine compartment

FUSE

HTR

Ampere

50A

Circuit

Air conditioning system

4

1

2

3

4

5

RDI

30A

Electric cooling fans

No circuit

CDS

30A

S-HORN

ENG W/P

10A

30A

Cooling system

ABS MAIN

NO.2

6

7

8

9

7.5A

30A

Anti-lock brake system

Headlight cleaner

H-LP CLN

P-CON MTR

AMP NO.1

P position control system, trans-

mission

30A

5A

Audio system

10 IGCT

PCU, IGCT NO.2, IGCT NO.3

Inverter and converter

11 DC/DC-S

P position control system, P posi-

tion switch

12 P CON MAIN

7.5A

459

4-3. Do-it-yourself maintenance

FUSE

13 AM2

Ampere

Circuit

Power management system

Smart key system, hybrid system

MAYDAY

7.5A

10A

14 ECU-B2

15 MAYDAY

16 ECU-B3

Air conditioning system

Turn signal lights

17 TURN & HAZ

Multiport fuel injection system/

sequential multiport fuel injection

system

18 ETCS

10A

ABS MAIN

19

20A

15A

Anti-lock brake system

NO.1

20 H-LP LH LO

21 P/I 2

Left-hand headlight (low beam)

P position control system, horn,

headlight low beams, back-up

lights

40A

22 ABS MTR 1

23 ABS MTR 2

30A

Anti-lock brake system

Headlight high beams, daytime

running lights

24 H-LP HI MAIN

20A

25 DRL

7.5A

30A

60A

15A

10A

Daytime running lights

26 AMP NO.2

27 P/I 1

Audio system, navigation system

IG2, EFI MAIN, BATT FAN

Electric power steering

28 EPS

29 H-LP RH LO

30 PCU

Right-hand headlight (low beam)

Inverter and converter

Hybrid system, P position control

system, power management sys-

tem, multiport fuel injection sys-

tem/sequential multiport fuel

injection system

31 IGCT NO.2

10A

460

4-3. Do-it-yourself maintenance

FUSE

32 MIR HTR

33 RAD NO.1

Ampere

10A

Circuit

Outside rear view mirror defoggers

Audio system, navigation system

15A

Door courtesy lights, luggage

compartment light, personal light,

interior light, foot lights, vanity

lights, inside rear view mirror,

garage door opener

34 DOME

10A

Smart key system, personal lights,

gauges and meters, emergency

flashers

35 ECU-B

7.5A

36 H-LP LH HI

37 H-LP RH HI

10A

Left-hand headlight (high beam)

Right-hand headlight (high beam)

Multiport fuel injection system/

sequential multiport fuel injection

system

38 EFI NO.2

10A

4

39 IGCT NO.3

40 SPARE

41 SPARE

42 SPARE

10A

30A

10A

7.5A

Cooling system

Spare fuse

Multiport fuel injection system/

sequential multiport fuel injection

system, cooling system, EFI NO.2

43 EFI MAIN

44 BATT FAN

20A

10A

Battery cooling fan

Multiport fuel injection system/

sequential multiport fuel injection

system, MET, IGN, power man-

agement system

45 IG2

20A

461

4-3. Do-it-yourself maintenance

■ Left side instrument panel

2

3

4

5

6

7

8

9

10

1

11

12

21

13

22

14

15

19

16

17 18

29 30

27 28

23 24 25 26

20

ITO43P133

FUSE

CIG

Ampere

15A

Circuit

1

2

Power outlets

Multiplex communication system,

outside rear view mirrors, driver

support system, audio system,

navigation system, advanced

parking guidance system, head-up

display

ECU-ACC

10A

3

4

5

6

7

8

9

PWR OUTLET

SEAT HTR FR

SEAT HTR FL

DOOR NO.1

PSB

15A

10A

25A

30A

25A

7.5A

30A

7.5A

Power outlets

Seat heater

Power door lock system

Pre-Collision System

Front passenger’s seat

No circuit

PWR SEAT FR

DBL LOCK

10 FR FOG

11 PWR SEAT FL

12 OBD

Front fog lights

Driver’s seat

On-board diagnosis system

No circuit

13 RR FOG

Stop lights, high mounted stop-

light, brake system, driver support

system, vehicle proximity notifica-

tion system

14 STOP

10A

462

4-3. Do-it-yourself maintenance

FUSE

Ampere

25A

Circuit

Power windows

15 P FR DOOR

16 D FR DOOR

17 DOOR RR

18 DOOR RL

19 S/ROOF

25A

Power windows

Moon roof

25A

30A

Electric cooling fans, multiplex

communication system, vehicle

proximity notification system

20 ECU-IG NO.1

21 ECU-IG NO.2

22 GAUGE

10A

Driver support system, Pre-Colli-

sion System, LKA system, inside

rear view mirror, garage door

opener, yaw rate & G sensor,

brake system, electric power

steering, navigation system, moon

roof, tire pressure warning system,

seat belt pretensioners, audio sys-

tem, emergency flashers, turn sig-

nal lights, windshield wipers,

headlight cleaner

4

Headlight leveling system, gauges

and meters, emergency flashers,

turn signal lights

Air conditioning system, Solar

Ventilation System, Remote Air

Conditioning System

23 A/C

10A

15A

24 WASHER

Windshield washer

463

4-3. Do-it-yourself maintenance

FUSE

25 RR WIP

26 WIP

Ampere

Circuit

Rear window wiper and washer

Windshield wipers

20A

30A

7.5A

27 MET

Gauges and meters

Brake system, driver support sys-

tem, multiport fuel injection sys-

tem/sequential multiport fuel

injection system, SRS airbag sys-

tem, front passenger occupant

classification system (ECU and

sensors), power management sys-

tem, smart key system, front pas-

senger’s seat belt reminder light

28 IGN

10A

Air conditioning system, personal

light, transmission, P position

switch, navigation system, Solar

Ventilation System, Remote Air

Conditioning System, advanced

parking guidance system, head-

light cleaner, front passenger’s

seat belt reminder light, headlight

leveling system, glove box light,

clock, audio system, MPH or km/h

switch

29 PANEL

10A

Headlight leveling system, park-

ing lights, tail lights, license plate

lights, front fog lights, side marker

lights

30 TAIL

10A

464

4-3. Do-it-yourself maintenance

■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. 467)

●If the replaced fuse blows again, have the vehicle inspected by your

Toyota dealer.

■If there is an overload in a circuit

The fuses are designed to blow, protecting the wiring harness from damage.

■When replacing light bulbs

Toyota recommends that you use genuine Toyota products designed for this

vehicle. Because certain bulbs are connected to circuits designed to prevent

overload, non-genuine parts or parts not designed for this vehicle may be

unusable.

CAUTION

4

■To prevent system breakdowns and vehicle fire

Observe the following precautions.

Failure to do so may cause damage, and possibly a fire or injury.

●Never use a fuse of a higher amperage rating than that indicated, or use

any other object in place of a fuse.

●Always use a genuine Toyota fuse or equivalent.

Never replace a fuse with a wire, even as a temporary fix.

This can cause extensive damage or even fire.

●Do not modify the fuses or fuse boxes.

■Fuse box near the power control unit

Never check or replace the fuses as there are high voltage parts and wiring

near the fuse box.

Doing so may cause electric shock, resulting in death or serious injury.

465

4-3. Do-it-yourself maintenance

NOTICE

■Before replacing fuses

Have the cause of electrical overload determined and repaired by your

Toyota dealer as soon as possible.

466

Maintenance and care -> Checking and replacing fuses for Your Toyota Prius 4 Door Third Generation (2010-2015)

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