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How to Detect and Replace a Blown Fuse in Car

Detecting a blown fuse in car is the first step towards diagnosing a fault in your car’s system. When you replace a blown fuse in the car, you save yourself from the trouble of other expensive repairs. Though every car has a different system, all modern cars have fuses.

 

What Is a Blown Fuse in Car?

As like as many other appliances, the purpose of fuses in cars is to protect the electrical system within. The basic components of a fuse are one fuse element and two terminals. And the fuse itself works as a bridge between the vehicle and the particular system. If the system is overheated, the fuse element will heat up and melt, and, eventually, the circuit will stop working.

 

The Result of a Blown Fuse in Car

A blown fuse doesn’t always indicate a severe problem; a fuse may go down for simple defects. For example, often drivers unintentionally make the system unworkable using multiple accessories at the same time.

Moreover, fuses usually don’t last that long and are subject to blowing after a certain period. Replace your car’s old one, defective fuse with another of the same rating and size. And if you see fuses going down now and then, then it may be a sign of a more severe problem, like a short-circuit in your car’s system.

 

Locating Your Car’s Fuse Box

Older cars, generally, have two fuse boxes. The first one is located under the hood. It associated with the larger system in the car, mostly are the transmission and the engine. The second one’s position is in the passenger cabin, and it protects the remaining systems like entertainment, lights or any other accessories. You can just use your car’s owner’s manual to locate the fuse box. The manual will also tell you about the electrical systems dependent on the fuses.

How to Detect and Replace a Blown Fuse in Car

How to Replace a Blown Fuse

Firstly, you need to locate the exact position of the fuse that malfunctioned. You can follow the fuse diagram on the fuse box cover. If there is nothing like that, go over the user’s manual.

As soon as you detect the faulty fuse, pull the receiving terminals firmly to remove it. Usually, you can dismantle a fuse using bare hands; in some cases, however, you may have to use a fuse puller tool inside the fuse box. You should remove any fuse with signs of clouding or residue. Now, push back the new fuse into the receiving terminals correctly.

The new fuse should have the same amperage as the last one. Never use a fuse with higher amperage than recommended. You will end up damaging more expensive accessories, only to save a little fuse. Cars commonly use fuses with the following capacity: 30 amp, 20 amp, and 15 amp.

 

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2 thoughts on “How to Detect and Replace a Blown Fuse in Car

  • January 21, 2017 at 6:35 am
    Permalink

    Great advise,keep it up!

    Reply
    • March 26, 2017 at 1:02 am
      Permalink

      Arigatou. Thank you. Your comments encourage us a lot.

      Reply

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