2012 Toyota Prius Plug-in Hybrid Fuse Box Diagram
The 2 fuse boxes on the 2012 Toyota Prius Plug-in Hybrid, with every fuse and relay. Tap a fuse to see what it protects, or search for the thing that stopped working.
Where it isUnder the hood in the engine bay. Page 498 of the owner's manual shows the exact spot.
Slot map: the fuses are listed in the manual's order, not where they sit in the box. Match the numbers to the label inside the box cover, or the drawing on page 498 of your owner's manual.
Where it isInside the car, under or behind the dashboard, left side. Page 502 of the owner's manual shows the exact spot.
Slot map: the fuses are listed in the manual's order, not where they sit in the box. Match the numbers to the label inside the box cover, or the drawing on page 502 of your owner's manual.
2012 Prius Plug-in Hybrid engine bay fuses
Engine compartment. Tap a row to find it on the diagram.
| No. | Amps | Type | Protects |
|---|---|---|---|
| 1 | 50A | Fuse (size not listed) | HTR: Air conditioning system |
| 2 | 30A | Fuse (size not listed) | RDI: Electric cooling fans |
| 3 | 30A | Fuse (size not listed) | CDS: Electric cooling fans |
| 4 | 7.5A | Fuse (size not listed) | FUEL OPN: Fuel filler door opener |
| 5 | 10A | Fuse (size not listed) | S-HORN |
| 6 | 30A | Fuse (size not listed) | ENG W/P: Cooling system |
| 7 | 7.5A | Fuse (size not listed) | ABS MAIN NO.2: Anti-lock brake system |
| 8 | 30A | Fuse (size not listed) | H-LP CLN: Headlight cleaner |
| 9 | 30A | Fuse (size not listed) | P-CON MTR: P position control system, mission |
| 10 | 30A | Fuse (size not listed) | AMP NO.1: Audio system |
| 11 | 30A | Fuse (size not listed) | IGCT: PCU, IGCT NO.2, IGCT NO.3 |
| 12 | 5A | Fuse (size not listed) | DC/DC-S: Inverter and converter |
| 13 | 7.5A | Fuse (size not listed) | P CON MAIN: P position control system, P position switch |
| 14 | 7.5A | Fuse (size not listed) | AM2: Power management system |
| 15 | 7.5A | Fuse (size not listed) | ECU-B2: Smart key system, hybrid system |
| 16 | 10A | Fuse (size not listed) | MAYDAY/DCM: MAYDAY/DCM |
| 17 | 10A | Fuse (size not listed) | PIMR: Charge system |
| 18 | 10A | Fuse (size not listed) | TURN & HAZ: Turn signal lights |
| 19 | 10A | Fuse (size not listed) | ETCS: Multiport fuel injection system/ sequential multiport fuel injection system |
| 20 | 20A | Fuse (size not listed) | ABS MAIN NO.1: Anti-lock brake system |
| 21 | 15A | Fuse (size not listed) | H-LP LH LO: Left-hand headlight (low beam) |
| 22 | 40A | Fuse (size not listed) | P/I 2: P position control system, horn, headlight low beams, back-up lights |
| 23 | 30A | Fuse (size not listed) | ABS MTR 1: Anti-lock brake system |
| 24 | 30A | Fuse (size not listed) | ABS MTR 2: Anti-lock brake system |
| 25 | 20A | Fuse (size not listed) | H-LP HI MAIN: Headlight high beams, daytime running lights |
| 26 | 7.5A | Fuse (size not listed) | DRL: Daytime running lights |
| 27 | 30A | Fuse (size not listed) | AMP NO.2: Audio system, navigation system |
| 28 | 60A | Fuse (size not listed) | P/I 1: IG2, EFI MAIN, BATT FAN |
| 29 | 60A | Fuse (size not listed) | EPS: Electric power steering |
| 30 | 15A | Fuse (size not listed) | H-LP RH LO: Right-hand headlight (low beam) |
| 31 | 10A | Fuse (size not listed) | PCU: Inverter and converter |
| 32 | 10A | Fuse (size not listed) | IGCT NO.2: Hybrid system, P position control system, power management system, multiport fuel injection system/sequential multiport fuel injection system |
| 33 | 10A | Fuse (size not listed) | MIR HTR: Outside rear view mirror defoggers |
| 34 | 15A | Fuse (size not listed) | RAD NO.1: Audio system, navigation system |
| 35 | 10A | Fuse (size not listed) | DOME: Door courtesy lights, luggage compartment light, personal light, interior light, foot lights, vanity lights, inside rear view mirror, garage door opener |
| 36 | 7.5A | Fuse (size not listed) | ECU-B: Smart key system, personal lights, gauges and meters |
| 37 | 10A | Fuse (size not listed) | H-LP LH HI: Left-hand headlight (high beam) |
| 38 | 10A | Fuse (size not listed) | H-LP RH HI: Right-hand headlight (high beam) |
| 39 | 10A | Fuse (size not listed) | EFI NO.2: Multiport fuel injection system/ sequential multiport fuel injection system |
| 40 | 10A | Fuse (size not listed) | IGCT NO.3: Cooling system |
| 41 | 30A | Fuse (size not listed) | SPARE: Spare fuse |
| 42 | 10A | Fuse (size not listed) | SPARE: Spare fuse |
| 43 | 7.5A | Fuse (size not listed) | SPARE: Spare fuse |
| 44 | 20A | Fuse (size not listed) | EFI MAIN: Multiport fuel injection system/ sequential multiport fuel injection system, cooling system, EFI NO.2 |
| 45 | 20A | Fuse (size not listed) | BATT FAN: Battery cooling fan |
| 46 | 20A | Fuse (size not listed) | IG2: Multiport fuel injection system/ sequential multiport fuel injection system, MET, IGN, power management system |
2012 Prius Plug-in Hybrid left side panel fuses
Left side instrument panel. Tap a row to find it on the diagram.
| No. | Amps | Type | Protects |
|---|---|---|---|
| 1 | 15A | Fuse (size not listed) | CIG: Power outlets |
| 2 | 10A | Fuse (size not listed) | ECU-ACC: Multiplex communication system, outside rear view mirrors, driver support system, audio system, navigation system |
| 3 | 15A | Fuse (size not listed) | PWR OUTLET: Power outlets |
| 4 | 10A | Fuse (size not listed) | SEAT HTR FR: Seat heater |
| 5 | 10A | Fuse (size not listed) | SEAT HTR FL: Seat heater |
| 6 | 25A | Fuse (size not listed) | DOOR NO.1: Power door lock system |
| 7 | 30A | Fuse (size not listed) | PSB: Pre-Collision System |
| 8 | 30A | Fuse (size not listed) | PWR SEAT FR: Front passenger’s seat |
| 9 | 25A | Fuse (size not listed) | DBL LOCK |
| 10 | 7.5A | Fuse (size not listed) | FR FOG: Front fog lights |
| 11 | 30A | Fuse (size not listed) | PWR SEAT FL: Driver’s seat |
| 12 | 7.5A | Fuse (size not listed) | OBD: On-board diagnosis system |
| 13 | 7.5A | Fuse (size not listed) | RR FOG |
| 14 | 10A | Fuse (size not listed) | STOP: Stop lights, high mounted stoplight, brake system, driver support system, vehicle proximity notification system |
| 15 | 25A | Fuse (size not listed) | P FR DOOR: Power windows |
| 16 | 25A | Fuse (size not listed) | D FR DOOR: Power windows |
| 17 | 25A | Fuse (size not listed) | DOOR RR: Power windows |
| 18 | 25A | Fuse (size not listed) | DOOR RL: Power windows |
| 19 | 30A | Fuse (size not listed) | S/ROOF |
| 20 | 10A | Fuse (size not listed) | ECU-IG NO.1: Electric cooling fans, multiplex communication system, vehicle proximity notification system |
| 21 | 10A | Fuse (size not listed) | ECU-IG NO.2: Driver support system, Pre-Collision System, inside rear view mirror, garage door opener, yaw rate & G sensor, brake system, navigation system, tire pressure warning system, seat belt pretensioners, audio system, emergency flashers, turn signal lights, windshield wipers, headlight cleaner |
| 22 | 10A | Fuse (size not listed) | GAUGE: Headlight leveling system, gauges and meters |
| 23 | 10A | Fuse (size not listed) | A/C: Air conditioning system, Remote Air Conditioning System |
| 24 | 15A | Fuse (size not listed) | WASHER: Windshield washer |
| 25 | 20A | Fuse (size not listed) | RR WIP: Rear window wiper and washer |
| 26 | 30A | Fuse (size not listed) | WIP: Windshield wipers |
| 27 | 7.5A | Fuse (size not listed) | MET: Gauges and meters |
| 28 | 10A | Fuse (size not listed) | IGN: Brake system, driver support system, multiport fuel injection system/sequential multiport fuel injection system, SRS airbag system, front passenger occupant classification system (ECU and sensors), power management system, smart key system, front passenger’s seat belt reminder light |
| 29 | 10A | Fuse (size not listed) | PANEL: Air conditioning system, personal light, transmission, P position switch, navigation system, Remote Air Conditioning System, headlight cleaner, front passenger’s seat belt reminder light, headlight leveling system, glove box light, clock, audio system, MPH or km/h switch |
| 30 | 10A | Fuse (size not listed) | TAIL: Headlight leveling system, parking lights, tail lights, license plate lights, front fog lights, side marker lights |
Blade fuse colours
- 5A Tan
- 7.5A Brown
- 10A Red
- 15A Blue
- 20A Yellow
- 25A Clear
- 30A Green
- 35A Blue-green
- 40A Orange
Cartridge (J-case) colours
- 20A Blue
- 25A White
- 30A Pink
- 40A Green
- 50A Red
- 60A Yellow
Source: 2012 Toyota Prius Plug-in Hybrid Owner's Manual, "Fuses" section, p. 498 and 502.
Always replace a fuse with one of the same amp rating. If a new fuse blows straight away, the circuit has a fault.