2012 Ford Fiesta Fuse Box Diagram

Your 2026 Ford Fiesta’s radio cuts out mid-song. The 12V outlet stops charging your phone. The horn picks the worst possible moment to go silent. Before you book a $100 diagnostic appointment, check the fuse box. Most electrical gremlins on this car trace back to a single blown fuse, and the fix takes about five minutes and costs less than a dollar.

This guide covers both fuse box locations, gives you the full fuse map with amperage ratings, and walks through the troubleshooting steps most owners skip. You’ll learn how to remove the covers without breaking the clips, how to use the fuse puller correctly, and which fuses tend to fail first on this model.

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2026 Ford Fiesta Fuse Box Location (Passenger & Engine Compartment)

The Fiesta has two fuse boxes. The first sits inside the passenger compartment, behind a small panel on the driver’s side of the dashboard. Open the driver’s door and look at the end of the dash — you’ll see a rectangular cover with a small notch at the top.

The second fuse box lives under the hood, on the driver’s side near the battery. Ford calls this the power distribution box. It handles high-current circuits like the cooling fan, horn, and anti-lock brake system. The engine compartment fuse box also houses most of the relays.

If you’re dealing with interior issues — radio, interior lights, power windows, the 12V outlet — start with the passenger compartment box. Under-hood problems like a dead cooling fan or a horn that won’t sound point to the engine compartment box.

How to Access the Fuse Boxes (Cover Removal & Clip Release Tips)

The passenger compartment cover is the one people break. It has two plastic clips on the top edge and two on the bottom. Press the top clips inward toward the center of the panel while pulling the cover toward you. Do not pry with a screwdriver at the bottom edge — that’s where the tabs are most fragile.

Once the top clips release, tilt the cover out from the top and slide it upward slightly to free the bottom tabs. The cover should come off without force. If it resists, you’re pulling the wrong way. Reinstall by aligning the bottom tabs first, then pressing the top edge until the clips click.

The under-hood fuse box cover has a different mechanism. There’s a locking tab on the side facing the engine. Press it down and lift the cover from the front edge. The cover has a diagram printed on the underside — flip it over and you’ll see the fuse layout without needing a manual.

For more detailed guidance on pulling individual fuses safely, check out this fuse removal guide before you start yanking on components.

Passenger Compartment Fuse Box Diagram (Full Map with Amperage)

The interior fuse panel uses mini blade fuses. Here’s the full map for the 2026 Fiesta:

Wait — that table looks wrong. The 2026 Fiesta interior fuse panel doesn’t have 200 fuses. I’m not going to list every unused slot. Here’s the real map:

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