Toyota RAV4 XA50 Fuses: Complete Guide 2018+

ByAlex Smidt

The Toyota RAV4 fifth generation, known internally as the XA50 platform, introduced from 2018 onwards, uses a multi-box fuse architecture to protect every electrical circuit on the vehicle. Understanding the exact fuse layout, amperage ratings and circuit functions is essential for diagnosing electrical faults, replacing blown fuses safely and avoiding damage to sensitive electronics including the hybrid drivetrain components on PHEV and hybrid variants. This guide covers all fuse boxes fitted to the RAV4 XA50 in complete detail.

Fuse Box Locations on the Toyota RAV4 XA50

The RAV4 XA50 has three primary fuse and relay centres you need to know about:

  • Instrument Panel Fuse Box (Driver Side) – located beneath the dashboard on the driver’s left-hand side, behind a removable cover panel
  • Engine Compartment Fuse Box (Main) – located in the engine bay on the left side near the battery
  • Engine Compartment Relay Box / Sub Fuse Block – also in the engine bay, sometimes integrated with the main underhood block depending on trim and market

Instrument Panel Fuse Box – Full Fuse List

  • 1 – 7.5A – Combination meter, multi-information display
  • 2 – 10A – Audio system, infotainment head unit
  • 3 – 7.5A – Wireless door lock, smart key ECU
  • 4 – 15A – Cigarette lighter / accessory socket (front)
  • 5 – 7.5A – SRS airbag ECU
  • 6 – 10A – Power window master switch (driver)
  • 7 – 20A – Power windows (passenger and rear)
  • 8 – 7.5A – Exterior mirror control, heated mirrors
  • 9 – 10A – Backup camera, parking sensors ECU
  • 10 – 10A – Navigation unit, Bluetooth module
  • 11 – 7.5A – Climate control panel, HVAC blower control
  • 12 – 20A – Blower motor relay feed
  • 13 – 10A – Adaptive cruise control ECU
  • 14 – 7.5A – Lane departure alert, pre-collision system
  • 15 – 10A – Automatic light control, rain-sensing wipers
  • 16 – 7.5A – Interior lighting, dome light, map lights
  • 17 – 15A – OBD-II diagnostic port, ECM communication bus
  • 18 – 10A – Seat heater switches (front)
  • 19 – 20A – Heated front seats (driver and passenger elements)
  • 20 – 7.5A – Steering column control switches, horn relay coil
  • 21 – 10A – Instrument panel illumination, dimmer control
  • 22 – 15A – Rear USB charge ports
  • 23 – 7.5A – TCM (transmission control module) signal feed
  • 24 – 10A – Power door lock actuators (all doors)
  • 25 – 30A – Power sliding glass roof / panoramic moonroof motor
  • 26 – 10A – Anti-theft system, immobiliser ECU
  • 27 – 7.5A – Clock, audio memory keep-alive

Engine Compartment Main Fuse Box – Full Fuse List

  • AM1 – 120A (fusible link) – Battery to main power distribution bus
  • AM2 – 80A (fusible link) – Ignition main bus feed
  • ALT – 120A (fusible link) – Alternator output protection
  • ECU-IG – 10A – Engine control module ignition feed
  • ECU-B – 10A – Engine control module battery feed (keep-alive)
  • INJ – 15A – Fuel injectors
  • IGN – 10A – Ignition coils
  • EFI – 15A – Electronic fuel injection, fuel pump relay coil
  • FUEL PUMP – 15A – Fuel pump motor
  • FAN No.1 – 40A – Radiator cooling fan motor No.1
  • FAN No.2 – 30A – Radiator cooling fan motor No.2
  • HTR – 40A – HVAC heater blower motor main feed
  • RDI – 20A – Electric power steering (EPS) ECU
  • EPS – 40A – EPS motor main supply
  • ABS No.1 – 40A – ABS / VSC hydraulic control unit motor
  • ABS No.2 – 10A – ABS / VSC ECU signal and solenoid feed
  • HEAD-LH – 15A – Left headlight (low and high beam unit)
  • HEAD-RH – 15A – Right headlight (low and high beam unit)
  • FOG – 15A – Front fog lights
  • TAIL – 10A – Tail lights, parking lights, licence plate lights
  • HORN – 10A – Horn relay and horn
  • WIPER – 20A – Front wiper motor
  • WIPER-REAR – 15A – Rear wiper motor
  • WASHER – 10A – Front and rear washer pump motors
  • START – 7.5A – Starter motor relay coil
  • SPARE – 20A – Towing harness / accessory socket (if fitted)
  • TPMS – 7.5A – Tyre pressure monitoring system ECU and sensors
  • CAMERA – 10A – Front and rear view camera system
  • DCM – 7.5A – Data communication module, Toyota Connected Services

Hybrid and PHEV Specific Fuses (RAV4 Hybrid XA50 / RAV4 PHEV)

On RAV4 Hybrid (AXAH52/AXAH54) and RAV4 PHEV (AXAP54) variants, additional high-voltage and hybrid-system fuses exist in a dedicated hybrid battery service plug and in the inverter assembly. These must not be serviced without hybrid-rated insulated tools and appropriate training. The low-voltage (12V) fuse layout remains largely identical to petrol variants with these additions:

  • HV BATT – 7.5A – High-voltage battery ECU (HV-ECU) communication feed
  • MGR – 10A – Motor generator relay control signal
  • DCDC – 10A – DC-DC converter ECU feed (converts HV to 12V)
  • CHRG – 15A – On-board charger ECU (PHEV only)
  • EVAP – 10A – Evaporative emission control solenoid (petrol engine circuit)

Important Notes on Fuse Replacement for RAV4 XA50

  • Always use Toyota-specified blade fuses (mini or standard type as marked on cover diagram) with the exact amperage rating – never fit a higher-rated fuse
  • The fuse cover on the instrument panel box contains a printed fuse map specific to your market and trim level – always cross-reference this with the list above
  • A fuse puller tool is stored inside the engine bay fuse box lid on most XA50 variants
  • If a fuse blows repeatedly, the underlying short circuit must be diagnosed before replacement – fitting the same amperage fuse into a live fault will result in repeated failure and potential wiring harness damage
  • Variants built for North America, Europe, Japan and Australia may have minor differences in fuse allocation due to market-specific equipment such as daytime running light regulations and emissions hardware

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