Where is the engine compartment fuse box?
Typically under the hood, the engine compartment fuse box is a black plastic box located in the engine bay, often on the driver's side near the fender or along the firewall. Exact placement varies by make and model, so the owner's manual or the diagram on the fuse box cover is your most reliable guide.
What is the engine compartment fuse box?
Also called the power distribution box, this component houses fuses (and often relays) that protect circuits critical to engine management, cooling, fueling, lighting, and accessories. The lid usually carries a diagram showing which fuse protects which circuit.
Common locations by vehicle type
Automakers tend to place the engine bay fuse box in a few standard spots. Checking these can save time when diagnosing electrical issues.
- Driver's-side inner fender area: A common location is a black plastic box mounted to the inner fender near the strut tower.
- Near the battery: Some models place the fuse box in a tray beside the battery or integrated within the battery housing.
- Firewall area: In certain European or larger vehicles, the fuse box sits along the firewall on the passenger side.
- Under a removable hood panel: A lid on top of the engine bay may lift to reveal the fuse box labeled “FUSE” or “POWER DISTRIBUTION.”
- Radiator/engine compartment corners: For trucks and SUVs, a second fuse box can sometimes be found near the radiator support.
Knowing these spots covers most cars built in the last couple of decades, but always verify with the manual or a diagram on the fuse box itself.
How to identify the correct fuse and inspect it
Once you locate the fuse box, use these steps to identify and inspect the appropriate fuse without causing damage.
- Refer to the diagram on the fuse box lid to match the circuit you’re troubleshooting to the correct fuse.
- Carefully remove the fuse using a fuse puller or needle-nose pliers.
- Inspect the metal element inside: a broken or melted filament means the fuse is blown or faulty.
- Replace it with a fuse of the same amperage rating as indicated by the diagram and vehicle specifications.
- Re-seat the fuse securely, replace the lid, and test the affected system to confirm restoration.
Always ensure the vehicle is off and the key is out before touching fuses. If a fuse repeatedly blows, there may be a short or an underlying component issue that requires professional service.
Summary
The engine compartment fuse box is typically located under the hood in the engine bay, but exact placement varies by vehicle. Use the owner's manual or the lid diagram to identify the correct box and fuse, and follow careful steps when inspecting or replacing fuses. If you can’t locate it or the problem persists, seek guidance from a dealer or certified mechanic.
