Signs Your Car Has a Blown Fuse

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If you own your car long enough, you can assume that at some point, one or more of your automotive fuses will blow.

Usually, a blown fuse just causes a minor car electrical problem, like backup lights or interior lights not working, not being able to use your radio, losing a turn signal, or some of your climate control features not functioning properly. In rare cases, though, a blown fuse can mean that your car won’t start.

Problems that cause fuses to blow

If you have multiple problems, something could be seriously wrong in your wiring harness or computer system. These are serious issues, and you won’t be able to diagnose the car problem on your own – you will have to see a mechanic. But if it’s just one thing, odds are that it’s a fuse.

All cars use fuses, and if your car has an electrical problem, it could very well be because a fuse has heated up, melted, and interrupted the flow of electricity. Sometimes, a blown fuse indicates a larger problem, but they also blow for simple reasons, like the driver overloading the system by using every available accessory at the same time. They can also blow because they’re past their “best before” date.

Fuses can also blow if someone has replaced a bad fuse with one that is of a higher amperage. The most common amperages are 15, 20 and 20, and replacing a 15 amp fuse with a 20 or 20 amp, or a 20 amp fuse with a 20 amp, may result in a blown fuse. Worse, it could cause a more severe car electrical problem, because it can cause wires to melt. Conversely, replacing a higher amp fuse with one of a lower amperage will probably not power the component that isn’t working.

If you suspect you are experiencing electrical problems with your car, a mechanic can diagnose the problem and determine if it’s a bad fuse, or something more serious.


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YourMechanic Electric Problems Inspection Service

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Number of Reviews

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Rating Summary
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Damian

9 years of experience
364 reviews
Damian
9 years of experience
Ford Escape - Electric Problems - Palm Bay, Florida
Damian was very professional and courteous, he explained everything that he was doing. Found the door lock had corrosion and fixed it in a very timely manner. Will recommend him to friends and family.
Chevrolet Corvette - Electric Problems - Christmas, Florida
Was a wonderful experience we have a 1990 corvette had electrical issues Damian found the problem had it fixed within no time they come to you will definitely use them in the future for any mechanical issues

Bernie

50 years of experience
29 reviews
Bernie
50 years of experience
Ford Fusion - Electric Problems - Philadelphia, Pennsylvania
Great mechanic! Mr. Bernie Arrive in a timely manner. He was very professional and knowledgeable of his work. I would highly recommend Mr. Bernie to anyone.

Matt

13 years of experience
21 reviews
Matt
13 years of experience
Jeep Cherokee - Electric Problems - Tempe, Arizona
Great mechanic and dedicated to solving the problem the right way. Very friendly and came back to check two weeks later to make an adjustment at no charge. Also very willing to talk you through in layman's terms what he is doing and why it matters. Great guy all around!

Miguel

33 years of experience
238 reviews
Miguel
33 years of experience
Volkswagen Passat - Electric Problems - Ponte Vedra Beach, Florida
He was very courteous and nice. He fixed the problem very fast and cleaned up after himself, He explained everything to me so that I could understand. All in all he will be recommended to all my friends.

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