Why Does My Car Keep Blowing Fuses & How To Replace Them

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Cars are equipped with a variety of electrical components. If a fuse blows, these will cease to function.

What causes a fuse to blow? And how should they be replaced?

What Is A Fuse?

When an overcurrent flows in an electric circuit due to some abnormality or other cause, the fuse blows. When the fuse blows, it interrupts the circuit and prevents the current from flowing. This protects electric circuits and electrical components from ignition or melting.

Causes Of Blown Fuses

The first possible cause of a blown fuse is a short circuit in the wiring.

Wiring is usually covered with a film that protects the conductors inside the wiring from being shorted. The conductors inside the wiring are usually covered with a film to prevent them from shooting out when they come in contact with other metal objects.

However, if the wiring is tightly bundled, the film can be damaged and torn.

If the film is torn, the conductors inside the film may come into contact with the body of the car or other parts of the car, causing the wiring to short-circuit. This can cause a short circuit in the wiring.

If the fuse blows immediately after it is replaced, the wiring may be shorted. Also, adding too many retrofitted electrical components can cause the power to exceed the fuse’s capacity, which can cause the fuse to blow. This can cause the fuse to blow.

How To Replace Fuses

Before replacing the fuse, first, locate the fuse box.

Note that the location of the fuse box may be on the lower right side of the driver’s seat or under the driver’s side door, depending on the model of the car. The location of the fuse box may vary depending on the model of the car.

Once the location is confirmed, open the fuse box. On the back of the fuse box lid, you will see which electrical components are compatible with which fuse. Check which electrical components correspond to which fuses.

Next, pull out the fuse that corresponds to the electrical component that is not functioning, and check to see if the fuse has blown. Since the fuse cannot be pulled out with bare hands, use a tool such as pliers or a fuse puller to pull it out. Check the blown fuse and if it is blown, replace it with a new one.

The new fuse should be of the same capacity and size as the blown fuse. If a fuse with a different capacity is used, the electrical components may not function properly. Be sure to check the capacity and size of the fuse before replacing it.