Signs Your Car Has a Blown Fuse

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 30, and replacing a 15 amp fuse with a 20 or 30 amp, or a 20 amp fuse with a 30 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.


Next Step

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JOHNNY

33 years of experience
67 reviews
JOHNNY
33 years of experience
Honda Accord - Electric Problems - Roseville, California
Johnny was great he saved my family money very nice very respectful one of the best mechanic I have ever met and seen I will pick him for all future needs
Dodge Neon - Electric Problems - Carmichael, California
Johnny was fantastic. He has taught and showed me alot of information. He got straight to work on my car told me the issues and fixed what needed to be done thank you so much Johnny for everything I really appreciate you and your service. I will definitely see you again. Highly recommend. Johnny is the man

Andrian

32 years of experience
184 reviews
Andrian
32 years of experience
Mercedes-Benz S430 - Electric Problems - Fort Lauderdale, Florida
Andrian was an excellent mechanic. He explained the problem to me in detail which was extremely helpful and he resolved the problem with professionalism and great attention to detail. I will definitely call to book another appointment with him if my Mercedes has any more issues in the future. I highly recommend him. Thanks!
Mercedes-Benz E320 - Electric Problems - Pompano Beach, Florida
This guy is the real deal nit just as a mechanic but as a genuine human being. He goes above and beyond to ensure that you understand what's happening with your vehicle.

Joel

30 years of experience
66 reviews
Joel
30 years of experience
Dodge Dakota - Electric Problems - Phoenix, Arizona
Joel was very knowledgeable, and did what 3 other mechanic's couldn't. He found out short, and now the problem has been resolved. Thank you again Joel for the 5 Star service!
Chevrolet Silverado 1500 Classic - Electric Problems - Peoria, Arizona
A+++++++++++++++++++++++++++++. He fixed the problem and took the time to show me defaults. Highly recommended!!!!

Diego

21 years of experience
564 reviews
Diego
21 years of experience
Chevrolet Express 2500 - Electric Problems - Glendale, Arizona
Diego was professional & spent several hours on a Diagnostic...he was unable to isolate & identity the specific Battery drain problem, but did provide helpful evaluation number ranges to help with future eliminations.
Chevrolet Silverado 1500 - Electric Problems - Surprise, Arizona
Diego was very professional and explained to me what I need to do so this does not happen again. Very good person I will recommend him highly for future work. He knows what to do and quickly finds the issue to fix.... thank you for having him on your team. Best regards, Kent Robertson

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