2019 Toyota Tacoma — Fuse Box Diagram & Amperage
AI-generated reference. Always verify torque values, fluid capacities, intervals, and procedures against the manufacturer's service manual or OEM repair information before performing work. Repairius is not liable for damage from acting on this content without verification.
Working on this 2019 Toyota Tacoma? Run just this one job through Repairius.
No big switch. Write the estimate, text it for approval, and get paid on your phone. Keep everything else the way it is.
14-day free trial · credit card required · cancel anytime
Quick answer
The 2019 Toyota Tacoma has two fuse box locations:
- Under-hood fuse box: In the engine bay, on the driver's side.
- Interior fuse box: Under the driver's side of the dashboard, behind a small removable panel.
There is no fuse box in the trunk/cargo area of a 2019 Toyota Tacoma.
Engine Compartment Fuse Box
This fuse box is located on the driver's side of the engine bay. It houses high-amperage fuses and relays that control major vehicle systems.
| Fuse # | Amp | Color | Circuit / Component Protected |
|---|---|---|---|
| 5 | 10A | Red | A/C Clutch |
| 10 | 10A | Red | Low Beam Headlight (Left) |
| 11 | 10A | Red | Low Beam Headlight (Right) |
| 12 | 10A | Red | High Beam Headlight (Left) |
| 13 | 10A | Red | High Beam Headlight (Right) |
| 20 | 15A | Blue | EFI (Electronic Fuel Injection) / Fuel Pump |
| 21 | 10A | Red | IGN (Ignition) |
| 25 | 30A | Green | ABS (Anti-lock Brake System) |
| 28 | 10A | Red | ECM (Engine Control Module) |
| 30 | 20A | Yellow | HORN |
| 32 | 30A | Green | Trailer Towing |
| 33 | 10A | Red | Stop Lights (Brake Lights) |
Relay Locations
- R1: Starter Relay
- R2: EFI Relay
- R4: A/C Clutch Relay
Note: Fuse numbers and circuits can vary based on your vehicle's trim level and options. Always confirm with the diagram printed on the inside of your fuse box lid.
Interior Fuse Box
Located under the driver's side dashboard, you may need to remove a small plastic cover to access it. This panel handles fuses for most of the interior electronics and accessories.
| Fuse # | Amp | Color | Circuit / Component Protected |
|---|---|---|---|
| 4 | 7.5A | Brown | SRS Airbag System |
| 8 | 15A | Blue | CIG (Cigar Lighter / 12V Power Outlet) |
| 12 | 7.5A | Brown | Tail Lights / Parking Lights |
| 15 | 10A | Red | Turn Signals |
| 22 | 15A | Blue | Radio / Infotainment System |
| 28 | 7.5A | Brown | ECU-IG (ECM Ignition Power) |
| 31 | 30A | Green | Blower Motor (Heater & A/C Fan) |
Note: Fuse numbers and circuits can vary based on your vehicle's trim level and options. Always confirm with the diagram printed on the inside of your fuse box lid.
How to test a fuse
You can often tell if a fuse is blown just by looking at it. Most automotive fuses have a small metal link that is visible through a clear plastic top. If this link is broken or melted, the fuse is blown and needs to be replaced.
For a more definitive test, you can use a multimeter set to the continuity setting.
- Remove the suspect fuse from the fuse box.
- Touch one probe of the multimeter to each of the two metal prongs on the fuse.
- If the multimeter beeps or shows a reading of zero (or very close to zero) ohms, the fuse is good.
- If the multimeter does not beep and shows "OL" or infinite resistance, the fuse is blown.
Important: Always replace a blown fuse with a new one of the exact same amperage rating. Never use a higher-rated fuse, as this can cause damage to the electrical circuit and create a fire hazard.
Common blown fuses on this vehicle
-
CIG (Cigar Lighter / 12V Outlet) Fuse: This is one of the most common fuses to blow. It often happens when a faulty phone charger or other plug-in accessory is used. If you find this fuse blown, the first thing to check is whatever you had plugged into the outlet. Unplug it before replacing the fuse. If the new fuse blows immediately, there may be a short in the outlet's wiring.
-
Trailer Towing Fuse: If your trailer lights aren't working, this is the first fuse to check. The most common cause is a wiring issue on the trailer itself. A short in the trailer's wiring will often blow the fuse in the truck as soon as the trailer is connected and the lights are turned on. Inspect the trailer wiring for any frayed or damaged wires before replacing the fuse.
-
EFI (Fuel Pump) Fuse: While not as common, if your Tacoma is cranking but won't start, it's worth checking the EFI fuse. A blown fuse here means the fuel pump isn't getting power. This could be due to a failing fuel pump that is drawing too much amperage, or a short in the wiring to the pump.
Find a trusted shop on Repairius.
Before you pull a fuse on the 2019 Toyota Tacoma
- 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 Tacoma
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 Tacoma Maintenance Schedule →
Available maintenance guidance; confirm the manufacturer schedule.
Repair planning references →
Plan the scope of work; detailed procedures need configuration-matched evidence.
Browse by make
Running an auto or diesel repair shop?
Compare Repairius to the shop software you're paying for
$99.99/month (first location included), unlimited users, 14-day free trial.