2023 Toyota Tundra – Fuse Box Diagram & Amperage

Quick answer

The 2023 Toyota Tundra features multiple fuse box locations to protect its electrical systems. You'll typically find fuse boxes in the following locations:

• Engine Compartment (Under-hood): Located on the driver's side of the engine bay, near the battery.
• Instrument Panel (Driver's Side Kick Panel): Situated inside the cabin, often behind a panel on the driver's side, near the footwell.
• Rear Cargo Area (Passenger Side): Located in the rear cargo area/trunk, usually behind a trim panel on the passenger side.

Engine Compartment Fuse Box

This fuse box, located under the hood, protects many of the primary and high-current circuits, including the engine control unit, fuel pump, headlights, and various relays.

Relays located in the Engine Compartment Fuse Box:

• EFI Main Relay: Controls power to the fuel injection system.
• Starter Relay: Energizes the starter motor.
• A/C MG Relay: Controls the A/C compressor clutch.
• HORN Relay: Activates the horn.
• HEAD LP Relay (L/R): Controls headlight operation.
• BLOWER Relay: Provides power to the blower motor.

Instrument Panel Fuse Box (Driver's Side Kick Panel)

This fuse box protects various interior electrical components, accessories, and cabin functions. Access it by removing the trim panel below the dashboard on the driver's side.

Rear Cargo Area Fuse Box (Passenger Side)

This fuse box primarily handles circuits for the rear of the vehicle, including additional power outlets, trailer functions, and some body electronics. It's typically located behind a trim panel on the passenger side of the cargo area or trunk.

Important Note: Fuse box configurations can vary slightly due to specific trim levels, optional equipment, and regional differences. Always refer to the fuse legend printed on the inside of your fuse box cover or your owner's manual for the most accurate and up-to-date information for your specific 2023 Toyota Tundra.

How to Test a Fuse

Testing a fuse is a straightforward process and can save you a trip to the mechanic. Here's how to do it:

1. Locate the Fuse Box: Identify the correct fuse box for the circuit you're troubleshooting.
2. Identify the Suspect Fuse: Consult your fuse box diagram (either from this article, your owner's manual, or the fuse box lid) to find the fuse associated with the malfunctioning component.
3. Visual Inspection: Most automotive fuses have a small wire or filament inside. If this wire is broken or melted, the fuse is blown. Remove the fuse using a fuse puller (often found in the fuse box itself) or a pair of needle-nose pliers.
4. Use a Multimeter (for a more precise test):
   • Set your multimeter to the