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

Schedule Electric Problems Inspection

The most popular service booked by readers of this article is Electric Problems Inspection. Once the problem has been diagnosed, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. YourMechanic’s technicians bring the dealership to you by performing this job at your home or office 7-days a week between 7AM-9PM. We currently cover over 2,000 cities and have 100k+ 5-star reviews... LEARN MORE

SEE PRICING & SCHEDULING

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Recent Electric Problems Inspection reviews

Excellent Rating

(717)

Rating Summary
669
17
8
6
17
669
17
8
6
17

Kanstantsin

19 years of experience
51 reviews
Kanstantsin
19 years of experience
Chevrolet Cruze L4-1.4L Turbo - Electric Problems - Englewood, Colorado
Absolutely humble and knowledgeable mechanic, he knows his work very well. I would strongly recommend him. Thanks Kanstantsin.
Volvo S80 - Electric Problems - Englewood, Colorado
Super. Friendly & efficient. Can definitely be trusted to work on your car. He knows about Volvos, particularly older models.

Alejandro

9 years of experience
82 reviews
Alejandro
9 years of experience
GMC Yukon V8-4.8L - Electric Problems - Los Angeles, California
ALEJANDRO was extremely courteous, patient, and knowledgeable. He us a great asset to your organization.
Nissan Altima - Electric Problems Inspection - Los Angeles, California
Got me the specifics for my car’s issue down to what the options are from here on out. Cool dude who was calm and collective about these issues. Will be able to want to book another appointment with him, if it is needed.

Jonathan

35 years of experience
483 reviews
Jonathan
35 years of experience
GMC Envoy L6-4.2L - Electric Problems - Clearwater, Florida
He completed what I thought was a thorough inspection and resolved my headlight issue. Thank you again!

Joe

43 years of experience
821 reviews
Joe
43 years of experience
Mercury Sable V6-3.0L - Electric Problems - New Port Richey, Florida
Well I already comment on Joe and the service he did. Like I said Joe really is concerned about your problem. He really goes beyond the call of duty. I'm so glad I went to this site. I knew when reading the profile of the mechanics,I knew I found the right one when I read Joe's profile. He really is passionate about his work. Really explains more then you would get from other places and mechanics I've dealtwith. Thank you Joe for having a great car side manner. You really put me at ease.

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

Related articles

How Long Does a Fuse Last?
The The electrical system that is on a car plays a large role in ensuring that everything is running efficiently. There are a number of different things in a car that will require a constant supply of electricity. In order...
How to Replace an Instrument Voltage Regulator
The instrument cluster has a voltage regulator that fails when the panel is dim or flickering, reads erratically, or is totally inoperable.
How to Replace an Anti-Lock Brake System (ABS) Fuse or Relay on Most Cars
Anti-lock brake systems have a fuse that fails if the ABS brake light is on or when the fuse is blown. The wheels may lock up if the ABS fuse is bad.

Related questions

Dashboard lights not working
Hello, you can turn the service lights off by disconnecting the negative battery cable for a few hours. To help find the pulled wire, have the dealership or technician use a scan tool capable of diagnosing canbus lines. The test will...
Turn signal flashing quickly. 1996 Oldsmobile Achivea
Hello there. A fast flasher is a common fault with the 1996 Oldsmobile Achieva. There are a few potentials causes, such as a failed left side turn signal bulb, a turn signal flasher that is faulty, a failing turn signal...
At 60 mph tachometer fluctuates between 3000 and red line
Hello. The Electric Code Detector is a component of the fuse block that detects increased electrical power needed and increases the idle speed to allow the alternator to provide more power. There is a specific test from Honda to determine...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (855) 347-2779 · hi@yourmechanic.com