Toyota Tundra Fuse Box: Location & Guide
TL;DR
Toyota Tundra fuses live in two boxes: engine bay (driver side, under the hood) and cabin (driver footwell/dash edge). Check the diagram printed on each box lid or the owner's manual before pulling a fuse.
Where the fuse boxes are located
Across all Tundra generations, the truck uses the same basic two-box layout that Toyota applies to most of its trucks and SUVs. The engine compartment fuse box sits at the driver side of the bay, close to the driver-side shock tower or fender, under a black plastic lid held by side clips or a couple of quarter-turn fasteners. The interior fuse box is mounted low on the driver side of the dashboard, near the kick panel by the left knee or under the edge of the instrument cluster; it is reached by pulling off a small trim cover, sometimes secured by one screw or simple snap tabs.
How to open each box
For the engine bay box, unclip or unscrew the lid and lift straight up; there is usually a small plastic fuse-puller tool clipped inside the lid or box itself. For the interior box, gently pry the cover at its edge with a flat trim tool or fingernail along the seam, then pull it away from the dash; avoid excessive force, as the tabs are plastic and can snap if pried at the wrong angle.
| Generation / years | Fuse box | Location | How to access |
|---|---|---|---|
| 1st gen (2000-2006) | Engine bay | Driver side of engine compartment | Unclip plastic lid, fuse puller inside |
| 1st gen (2000-2006) | Interior | Driver side dash, lower kick panel area | Pull off small trim cover |
| 2nd gen (2007-2021) | Engine bay | Driver side of engine compartment, near fender | Release side clips, lift lid |
| 2nd gen (2007-2021) | Interior | Driver side dash edge / kick panel | Pry cover along seam, pull free |
| 3rd gen (2022-present) | Engine bay | Driver side of engine compartment | Release clips or fasteners, lift lid |
| 3rd gen (2022-present) | Interior | Driver side dash, near left kick panel | Pull trim cover away from dash |
Finding the official fuse legend
Do not rely on generic charts for exact fuse positions and amperage, because these details can vary by model year, engine, and trim package. The authoritative source is always the diagram printed on the underside of each fuse box lid, plus the electrical or fuses section of the factory owner's manual, which lists every circuit by name for your specific configuration.
Fuses that commonly cause complaints
Owners most often report issues tied to a handful of circuits, identified here by function rather than by a number that changes across model years: the cigarette lighter / 12V accessory outlet fuse, which when blown kills phone chargers and accessory power without affecting anything else; the radio / infotainment fuse, which causes the screen or audio system to go dark while the rest of the truck runs normally; the interior lighting fuse, affecting dome, map, or courtesy lights; the blower motor fuse, which stops all heater/AC airflow even though the climate controls still light up; and the fuel pump relay circuit, where a blown fuse or failed relay can cause a no-start or stalling condition.
Checking and replacing a fuse safely
With the ignition off, pull the suspect fuse using the puller tool and look at the thin metal element inside; a blown fuse shows a visibly broken or melted strip. If it looks intact but you still suspect it, a simple automotive test light or multimeter across the two prongs confirms continuity. Always replace a blown fuse with one of the identical amperage rating shown on the lid diagram or manual; installing a higher-rated fuse can allow excess current to damage wiring or components and is not a safe workaround.
When a fuse keeps blowing
If the same fuse blows again shortly after replacement, that is not a fuse problem, it is a symptom of a wiring short or a failing component drawing too much current downstream on that circuit. Repeated blowing should prompt a proper diagnostic scan, since many of the circuits protected by these fuses (fuel pump, body control functions) will also set a stored trouble code that points directly to the affected circuit and speeds up the repair instead of guessing and swapping fuses repeatedly.
Summary
| Engine bay fuse box location | Driver side of engine compartment, under plastic lid |
|---|---|
| Interior fuse box location | Driver side dash, near lower kick panel |
| Trunk fuse box | None (pickup truck, no trunk compartment) |
| Fuse legend source | Diagram on underside of each box lid + owner's manual electrical chapter |
| Common problem fuses | 12V outlet, radio/infotainment, interior lights, blower motor, fuel pump relay |
| How to test a fuse | Visual check of metal strip, or test light / multimeter across prongs |
| Repeated blowing | Indicates a short or failing component; scan for stored fault codes |
Full diagnostics
For the complete step-by-step diagnostic and repair guide, see Toyota Tundra: Common Problems, Fault Codes & Repairs.
Frequently asked questions
Where is the fuse box on a Toyota Tundra?
Every Toyota Tundra has two fuse boxes: one under the hood on the driver side of the engine bay, protected by a plastic lid, and one inside the cabin on the driver side of the dashboard near the lower kick panel, behind a small trim cover. There is no separate trunk fuse box since the Tundra is a pickup truck.
How do I know which fuse to pull for the radio or 12V outlet?
Do not guess by fuse number, since positions can differ by model year and trim. Open the fuse box lid and read the diagram printed on its underside, which labels each fuse by the circuit it protects (for example radio, or accessory socket); the owner's manual electrical section repeats the same list with more detail.
How do I test if a Tundra fuse is blown?
With the ignition off, remove the fuse using the small plastic puller tool usually clipped inside the fuse box and inspect the thin metal strip inside; if it is visibly broken or melted, the fuse is blown. If it looks fine but you still suspect it, touch a test light or multimeter probe to each of the two prongs to confirm continuity.
Why does a new fuse keep blowing right after I replace it?
A fuse that blows again quickly after replacement almost always means there is a short circuit or an overloaded component on that circuit, not a bad fuse itself. Continuing to swap in new fuses (especially a higher amperage one) will not fix this and can create a fire risk; the circuit should be scanned for stored fault codes and diagnosed properly before driving the truck further.