Things To Know About Replacing Fuses

When an electronic component of your car suddenly stops working -- like the headlights, climate controls, infotainment, power windows and seats -- it could be due to a blown fuse. The fuses help protect your delicate electrical components from surges and shorts in the system. If one of your fuses goes bad, any accessories connected to it will stop working. You may want the help of a friendly, knowledgeable expert in our service center at Shingle Springs Subaru to find out what's gone wrong. Below, we'll answer some questions you might have about the fuses on your car, and how we can help get them fixed.

This fuse has blown, and will need to be replaced to restore the circuit 

5. What Is A Fuse?

Fuses are removable links in a car's circuitry. They function like the breakers or fuses in your home or office: However, automotive fuses are designed to melt and interrupt the flow of electricity if too much electricity flows through the circuit. So, if there's ever a wiring fault or an electrical component malfunctions and draws too much electricity, the fuse melts and interrupts the circuit. This protects electrical components from surges of electricity that could otherwise fry them completely. That means, if an electrical component on your car suddenly stops working, you may want to check the associated fuse.

 
This fuse box is located under the hood, and contains both fuses and relays 

4. Where Are The Fuses Located?

Most modern cars have at least one or two fuse boxes. Common locations for fuse boxes include under the hood, behind the driver's side dashboard, or possibly in the cargo area or behind the glovebox. You can find the location of your fuse boxes in the owner's manual. There, you'll also find a diagram that shows you what each fuse is connected to. So, if your low-beam headlights stop working, you'll want to locate any fuses or relays associated with your low-beam headlights and check them.

3. Are Fuses Safe To Remove?

In short, yes. Even for an amateur, as long as the engine is off and the key is removed from the ignition, you can safely remove a fuse from your car to inspect it and plug it back in. Just use the fuse puller included in your vehicle's fuse box or grab a pair of needle-nose pliers.

Automotive Fuse Puller 

2. What Does A Blown Fuse Look Like?

Inside a fuse's plastic housing is a metal filament. When more electricity flows through the circuit than the fuse is rated for, this filament will melt inside, creating a gap and severing the electrical connection. So, when you remove the fuse, just look through the translucent, colored plastic. If there's a gap in the metal linkage inside, the fuse is blown and will need to be replaced.

1. What Should I Do If The Fuse Is Blown?

First, you'll want to verify that replacing the blown fuse restores the circuit. So, grab a spare fuse of the same amperage as the old fuse and replace the old one. Or, grab a matching fuse from another component and borrow it. Naturally, that component will stop working, but you can verify that the blown fuse was the problem.

Once you get the fuse replaced, you may want to have a technician take a closer look at your vehicles' electrical systems. At the very least, you should be on the lookout for other electrical problems. Fuses rarely blow under normal conditions, and it almost always indicates a more severe problem somewhere in the system. Get the help you need to address this problem with the pros at Shingle Springs Subaru!

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Shingle Springs Subaru

4045 Wild Chaparral Dr
Directions Shingle Springs, CA 95682

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