Skip the auto shop - Our mechanics make house calls

Symptoms of a Bad or Failing Fuse

fuse

Bad or Failing Fuse Inspection

by a top-rated mechanic at your home or office

Fuses are simple electrical devices that are designed to stop electronic circuits from being overloaded. They come in many shapes, sizes, and designs, however, most automotive fuses use a strip of wire that will melt or break if the amount of current that is passing through it exceeds the amperage rating of the fuse. The fuse will blow in order to protect the circuit, wiring, and components from possible damage due to excessive current. When fuses blow or have any issues they can cause problems with functions and accessories of the vehicle. Usually a bad or blown fuse will produce a few symptoms that can alert the driver of a potential issue.

HAVE SYMPTOMS OF CAR TROUBLE?
Get an $80 diagnostic
by a top-rated mechanic at your home or office.

Get a quote · Book an Appointment · Our expert mechanics come to you.

Accessories or functions lose power

One of the first symptoms of an issue with a fuse is loss of power to one or more of the vehicle’s functions or accessories. Fuses are installed in line of specific circuits in order to protect those circuits from potentially overloading. If those circuits do become overloaded, for any reason, the fuse will blow and cut off power to the circuit in order to protect it from the possibility of damage. If you notice that any of the vehicle’s functions or accessories, such as the radio, wipers, power windows or locks, etc, suddenly cease to function it may be related to a fuse.

HAVE SYMPTOMS OF CAR TROUBLE?
Get your car fixed at your home or office.

Get a quote · Book an Appointment · Our expert mechanics come to you.

Fuse is blown

Another, more direct symptom of a bad fuse is a blown fuse. If the fuse is bad, upon retrieval and inspection the wire inside of the fuse will broken, burnt, or otherwise disconnected. A blown fuse will have to be replaced with a new one in order to restore function to the circuit. A blown fuse should also be investigated to determine what caused the fuse to blow in the first place.

While most fuses should last a long time as long as the vehicle’s electrical system is operating correctly, over time electrical systems and components can develop issues that cause fuses to blow. If you find or suspect that one or more of your fuses is blown or may be having an issue, have the vehicle inspected and diagnosed by a professional technician, to determine if the fuse should be replaced, and if another problem may be present.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
Still not sure about your car's issue?
Diagnose your car
What kind of issue are you experiencing?
Brakes are squeaking
Car is not starting
Car is overheating
Car is shaking (vibrating)
Fluids are leaking
Heating and A/C
Smoke or steam is coming out of the car
Warning light is on
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

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

More related articles

How to Find the Keyless Code on a Ford Explorer or Mercury Mountaineer
Many Ford Explorers and Mercury Mountaineers were manufactured with an option known as the Ford keyless entry keypad. Some models refer to it as SecuriCode as well. It...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
The Traveler’s Guide to Driving in Malaysia
CraigBurrows / Shutterstock.com Malaysia is a popular destination for many tourists today. The country has amazing sights and attractions that you will want to explore....


Related questions

Q: Solving electrical problem resulting from reversed battery terminals

Reverse polarity, at the battery, in a 12 volt electrical system on a car can cause a variety of effects including damaging the alternator, diodes and the numerous microprocessors on a vehicle like those in the powertrain control module (PCM)....

Q: Dash blows fuses

Hello. When this happens it means that there is a short in the circuits that go to your dash lights. It could be in the dash board itself, the wiring going to the dash board, or the bulbs that light...

Q: Electronic door lock/unlock can't be unlocked from inside car

Hello. Most of the time this is caused by a malfunction in the door lock switch. I have seen the switch short internally and cause this. I have also seen the control module for the locks fail, keeping them from...