2014 - 2021 Toyota Tundra Fuse Relay Boxes Location
2014 - 2021 Toyota Tundra, has 2 fuse and relay boxes, 1 fuse relay box in the engine compartment and 1 fuse relay box in the passenger compartment.
Engine Compartment Fuse Relay Box Location:
The location of the fuse box in the engine compartment is on the driver's side of the engine. The fuse and relays layout diagram is on the fuse relay box cover. If you want a detailed layout, you can find it in the owner's manual or on one of the websites with diagrams and layouts of fuses and relays.
Passenger Compartment Fuse Relay Box Location:
The location of the fuse box in the passenger compartment is on the driver's side under the dashboard. The fuse and relays layout diagram is on the fuse relay box cover. If you want a detailed layout, you can find it in the owner's manual or on one of the websites with diagrams and layouts of fuses and relays.
WARNING AND NOTES REGARDING FUSE REPLACEMENT IN THE VEHICLE:
- The vehicle is secured against rolling away.
- All electrical consumers are switched off.
- The vehicle is switched off.
- Always replace faulty fuses with specified new fuses containing the correct amperage.
- Use only fuses appeoved for Toyota with the respective fuse rating.
- When is the fuse box open, make shure that no moisture can enter the fuse box.
- When closing the fuse box, make shure that the seal of the lid is positioned correctly on the fuse box.
Common Fuses and Their Labels (Specific to 2014–2021)
If you need to replace a fuse, pay attention to the following key labels (ratings may vary slightly depending on options; always check the fuse box cover)
Engine Compartment Fuse Box (Exterior/Towing):
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TOW BRK (30A): Trailer brake controller. If the trailer brakes are not working, check this fuse first.
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TOW TAIL (30A): Trailer tail lights.
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STOP (15A): Stop lamps (including the high-mount stop lamp and trailer brake signal).
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SUB BATT (40A): Towing system power supply.
Interior Fuse Box (Interior Comfort):
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PWR OUTLET (15A) and CIG (15A): Power outlets and cigarette lighter. If a charger is not working, check these two.
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ECU-IG NO.1 / NO.2 (7.5A): Control module power. If the instrument cluster shows errors or electronic systems are unresponsive, check these.
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AM1 (7.5A): Related to the starting system and shift lock.
Special Notes:
Although some sources provide fuse layout information, the most accurate diagram is located on the inside of your vehicle's fuse box cover. Before replacing, be sure to check the label on the cover and use a fuse of the same amperage. Never use a higher-amperage fuse, as this can cause a fire.
