How to Replace an Electrical Fuse in a Car

by Contributor

Fuses protect all the electrical devices in your car: In case of a power surge, a fuse will "blow" so that the extra electricity doesn't reach the device. Replacing a fuse is easy, and you'll feel good diagnosing and fixing something yourself.

Step 1

Turn off the car before beginning work.

Step 2

Look under your car's dashboard, just below the driver's left knee.

Step 3

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Find the fuse box. It's usually a small square or rectangular plastic box. There will be a cover that pops open, with perhaps a tab keeping it closed. It can be opened without any tools. Many cars have a second fuse box inside the engine compartment. If the fuse you're looking to replace isn't in the fuse box inside the car, check for a second fuse box.

Step 4

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Remove the cover from the fuse box. The cover should contain a chart telling what each fuse controls, or there may be a clear plastic cover over the fuses that gives this information.

Step 5

Find the blown fuse. It will look like the filament in a burned-out lightbulb - the metal strip will be broken and the fuse may look a little blackened.

Step 6

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Grasp the burned-out fuse on either side with your thumb and forefinger, and pop it out with a small pinching motion. Most cars have a small, plastic "fuse remover" in one of the slots. If it hasn't already been lost, you can use this to remove the fuse, or even a small screwdriver if you can't get it out with your fingers.

Step 7

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Take the fuse to a hardware or auto parts store. Get an identical replacement.

Step 8

Replace the fuse by seating it in the slot from which you removed the burned-out one and pressing firmly with your thumb. It should snap into place.

Step 9

Start the car and test the feature that had burned out - the headlights, the fan or the interior lights, for example.

Replace the fuse box cover.

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