2022 Toyota Highlander Fuse Box Diagram & Amperage
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Quick Answer
The 2022 Toyota Highlander has three main fuse box locations:
- Under-hood: Beneath the hood, typically on the driver's side, near the battery.
- Instrument Panel (Dash): Located in the driver's side kick panel.
- Luggage Compartment (Cargo Area): On the driver's side of the cargo area.
Always verify the specific fuse layout against the diagram printed on the fuse box lid for your vehicle's exact trim level.
Under-Hood Fuse Box
The under-hood fuse box contains fuses and relays for critical engine components, headlights, and other high-current systems. It's usually located on the driver's side of the engine bay.
| Fuse # | Amp | Color | Circuit / Component Protected |
|---|---|---|---|
| Fuses | |||
| ECU-B No.1 | 10 | Red | ECM/PCM, BCM |
| EFI NO.1 | 20 | Yellow | Electronic Fuel Injection (EFI) |
| ETCS | 10 | Red | Electronic Throttle Control System |
| HORN | 15 | Blue | Horn |
| H-LP RH LO | 10 | Red | Right Low Beam Headlight |
| H-LP LH LO | 10 | Red | Left Low Beam Headlight |
| H-LP RH HI | 10 | Red | Right High Beam Headlight |
| H-LP LH HI | 10 | Red | Left High Beam Headlight |
| ABS NO.1 | 30 | Green | ABS Pump Motor |
| ABS NO.2 | 20 | Yellow | ABS Solenoid |
| IGCT | 10 | Red | Ignition Coils |
| INJ | 10 | Red | Fuel Injectors |
| STR | 20 | Yellow | Starter Relay Coil |
| MAIN | 50 | Red | Main Power Supply |
| ALT | 140 | Blue | Alternator (Charging System) |
| POWER | 40 | Green | Power Windows |
| HTD | 20 | Yellow | Heated Seats (where equipped) |
| WIP | 25 | Clear | Front Wipers |
| FR FOG | 15 | Blue | Front Fog Lights |
| A/C NO.1 | 10 | Red | A/C Compressor Clutch |
| A/C NO.2 | 10 | Red | A/C Control System |
| Relays | |||
| C/OPN | EFI Main Relay | ||
| HORN | Horn Relay | ||
| STARTER | Starter Relay | ||
| H-LP LO RH | Right Low Beam Headlight Relay | ||
| H-LP LO LH | Left Low Beam Headlight Relay | ||
| H-LP HI RH | Right High Beam Headlight Relay | ||
| H-LP HI LH | Left High Beam Headlight Relay | ||
| FR FOG | Front Fog Light Relay | ||
| A/C MG | A/C Magnetic Clutch Relay |
Instrument Panel Fuse Box (Driver's Side Kick Panel)
This fuse box manages electrical components within the cabin, including the radio, climate control, and power outlets. It
Before you pull a fuse on the 2022 Toyota Highlander
- Use the label printed on the panel cover or the owner's manual for your exact build. Layouts change with options, model year and build date, so a chart for another truck can be wrong.
- Replace a blown fuse only with the same amp rating. A larger fuse can let wiring overheat.
- A fuse that blows again right away means a short or failing component downstream. Find the cause before replacing it again.
- A good fuse doesn't prove the circuit works — relays, grounds and connectors fail too.
- Disconnect the battery before working near high-current fuses or cables.
Learn more: How fuses, relays and truck electrical systems work
More specs for the 2022 Toyota Highlander
Oil Capacity & Filter
Capacity, weight, filter PN, drain plug torque, change interval.
Fluid Type Specs
Engine oil, coolant, ATF, diff, brake, PS, DEF — with OEM spec numbers.
Coolant Capacity & Type
Total system capacity, OEM coolant spec, flush interval, bleed tips.
Transmission Fluid & Service
Trans model, fluid spec, capacity, filter PN, service interval.
Torque Specifications
Lug nuts, drain plug, caliper, axle nut, plug, key fasteners.
Brake Pad & Rotor Specs
Pad PNs, rotor size, min thickness, caliper torque.
Tire Size & Pressure
OEM size, cold psi, bolt pattern, wheel size, TPMS.
Battery Size & Group
Group size, CCA, AGM/flooded, dimensions, reset note.
A/C Refrigerant & Oil
R-134a or R-1234yf, charge oz, PAG oil spec.
Bulb Sizes (Headlight, Tail, Fog)
Headlight, fog, tail, turn, reverse, interior.
Factory Maintenance Schedule
Service intervals by mileage, severe-duty notes, known issues.
Towing Capacity & Payload
Max tow, payload, GVWR/GCWR, hitch class by trim.
Serpentine Belt Routing & Length
Belt routing, length, rib count, OEM + aftermarket PNs.
Wheel Alignment Specifications
Camber, caster, toe ranges (front & rear), adjustability notes.
Paint Color Codes
All factory colors with paint codes, sticker location, touch-up tips.
Wiper Blade Sizes
Driver/passenger/rear blade size, attachment, OEM + cross-refs.
Spark Plug Type & Gap
Plug PN, gap, torque, interval by engine.
Transmission & Axle Gear Ratios
Trans gear ratios, axle ratios, RPO codes, tow vs MPG impact.
Key Fob Programming
DIY programming steps, FCC ID, fob PN, battery, transponder.
Same spec — other model years
Maintenance & repair guides
2022 Toyota Highlander Maintenance Schedule →
Available maintenance guidance; confirm the manufacturer schedule.
Repair planning references →
Plan the scope of work; detailed procedures need configuration-matched evidence.
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Values can vary by engine, trim and build date; check your VIN-specific service information. Updated 2026-06-22.