2019 Toyota Highlander Fuse Box Diagram & Amperage
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Quick Answer
The 2019 Toyota Highlander features three main fuse box locations: under the hood (engine compartment), in the cabin (driver's side kick panel), and in the cargo area (rear passenger side).
Under-Hood Fuse Box
This fuse box, located in the engine compartment, primarily protects critical engine components, powertrain systems, and high-current accessories.
To access it, ensure your vehicle is off and the hood is open. The fuse box is typically on the driver's side, near the battery. Press the tabs on the lid and lift to reveal the fuses and relays. Always refer to your vehicle's specific fuse box lid diagram for the most accurate information, as variations can occur based on trim level and options.
| Fuse # | Amp | Color | Circuit / Component Protected |
|---|---|---|---|
| EFI | 20A | Yellow | EFI (Electronic Fuel Injection), ECM/PCM |
| HORN | 10A | Red | Horn |
| HEAD LH | 10A | Red | Left Headlight (Low Beam) |
| HEAD RH | 10A | Red | Right Headlight (Low Beam) |
| HEAD LL | 10A | Red | Left Headlight (High Beam) |
| HEAD RL | 10A | Red | Right Headlight (High Beam) |
| ALT | 140A | Pink | Alternator |
| AM2 | 30A | Green | IG2 Main (Ignition System) |
| ETCS | 10A | Red | Electronic Throttle Control System |
| ABS2 | 30A | Green | ABS (Anti-lock Brake System) Motor |
| ABS | 40A | Green | ABS (Anti-lock Brake System) Solenoid |
| ST | 7.5A | Brown | Starter Relay Coil |
| RLY MAIN | 50A | Red | Main Relay (Powers various circuits) |
| A/C MGT | 10A | Red | A/C Compressor Clutch Control |
| FOG FRT | 15A | Blue | Front Fog Lights |
| TOWING | 30A | Green | Trailer Brake Controller (if equipped) |
| INJ | 10A | Red | Fuel Injectors |
| IGN | 15A | Blue | Ignition Coils/Ignition System |
| CDS | 30A | Green | Cooling Fan (Condenser Fan) |
| MG CLT | 10A | Red | A/C Magnetic Clutch |
| HTR | 50A | Red | Blower Motor Main |
Relay Locations (Under-Hood):
The under-hood fuse box also houses several important relays. These are typically larger black or grey square components next to the fuses. Common relays include:
- EFI Relay: Controls power to the EFI system and fuel pump.
- Horn Relay: Activates the horn.
- Headlight Relays: Control power to the high and low beam headlights.
- Starter Relay: Engages the starter motor.
- A/C Mag Clutch Relay: Engages the A/C compressor clutch.
- Cooling Fan Relays: Control the engine cooling fans.
Cabin Fuse Box (Driver's Side Kick Panel)
Located inside the vehicle, typically on the driver's side kick panel (behind a small removable panel), this fuse box protects various interior electrical components, accessories, and convenience features.
To access it, you usually need to open the driver's door and locate a small cover on the side of the dashboard, accessible when the door is open. Pry it open gently. It
Before you pull a fuse on the 2019 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 2019 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
2019 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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