A blown fuse in the 2012 VW Jetta fuse box under the hood typically causes electrical component failures like headlights or wipers not working. Replace it immediately to avoid damage.
Locating the Fuse Box
The main fuse box is located under the hood on the driver's side. Lift the hood and locate the black plastic cover. Refer to the diagram printed on the cover's underside to identify the specific fuse position based on the failed component.
Tools and Safety Precautions
Wear gloves, turn off the engine, and remove the key before starting. Ensure the new fuse matches the amperage rating printed on the old one. Use only a fuse puller tool or needle-nose pliers to avoid electrical hazards.

Step-by-Step Replacement
- Open the hood and locate the fuse box cover.
- Pry open the cover carefully without forcing it.
- Identify the blown fuse using the diagram. Signs include a melted wire or dark spot.
- Grip the fuse with the puller tool and pull straight out.
- Insert a new fuse of the same amperage into the slot securely.
- Close the cover, start the engine, and test the component.
If the fuse blows again, inspect for underlying issues like a short circuit.