Blown Fuse In Car Symptoms & How To Fix A Fuse That Keeps Blowing In Car?

If you are reading this, it simply means you want to learn about the blown fuse in car symptoms and how to fix a fuse that keeps blowing in car.

If you have owned a vehicle for an extended period, you can testify that your vehicle’s fuse(s) have blown at one point or another. However, a blown fuse (s) can be annoying as well as signs of electrical problems.

Perchance these blown fuses usually cause minor issues such as malfunction of; the backup light or interior light system, the radio system, climate control features, turn signals, and more. In rare cases, a blown fuse (s) might cause your vehicle not to start.

Notwithstanding, blown fuses could be frustrating, but their efficacy is significant since they prevent most delicate electronic devices from being damaged by excessive electrical power.

In an economic concept, it is cheaper to change a blown a fuse than buy expensive electronic devices. However, you must try to find the cause of the problem and provide solutions, as you can change the damaged fuse and, in like manner, check for shorted or overloaded motors in your vehicle.

Nevertheless, this post will clarify and bring to your understanding; the standard blown fuse in cars symptoms, the average blown fuse car repair cost, why will fuse keeps blowing in a car cigarette lighter, why will a 15-amp fuse keeps blowing in a car, and more.

Be patient to study through my work!

Common, Blown Fuse In Car Symptoms

Some common symptoms of a blown a fuse in a car are below;

  • The radio system stopped working.
  • The electrical side mirrors of your vehicle will stop turning
  • The window wiper is not function
  • Misbehavior in the climate control
  • Air conditional malfunctioning
  • The turn signal light is out
  • Backup lights are not functioning
  • Insufficient supply of fuel by the electric fuel pumps.
  • The vehicle’s interior lights are not working.

When you observe any of the above listed, you should be able to check your manufacturer’s guide to find which electric circuit the blown a fuse is concerned with and contact your certified    technician for a proper diagnosis when a complex issue arises, in any case.

What Would Cause A Fuse To Keep Blowing?

There are significant reasons for a fuse to keep blowing in a vehicle.

Let’s take a look at these causes!

·         Overloaded Motors

If your motors or electrical devices are faulty, they will begin to demand/consume more electrical energy than required from your circuit, perchance, in turn, results in blowing a fuse.

·         Relay Problems

Your vehicle’s internal computer failure or inappropriate wire ground of the relay wires can also blow a fuse. Relay issues are likely to happen, especially when your car does not usually start. Although, the use of a multi-meter is essential to solve these issues.

·         Short Circuit

Short circuits cause fuses to blow when there is a poor connection between the electrical conductors that have overloaded the circuit.

Hence, when the following; a frayed wire is exposed, malfunction of some accessories, and electrical exposure to leaking vehicle fluids. In addition, the short that blows a fuse is to inform you that you should check your vehicle’s electrical system immediately.

·         Damaged Wiring

Frayed or damaged wire (conductors) could cause short circuits as it comes in contact with a liquid or metal material, unnecessarily increasing the current within any electrical circuit and causing the fuse to blow.

·         Wrong Use Of Fuse?

If you introduce a fuse with smaller amperage than usual, it will undoubtedly blow in that circuit. For instance, you usually use a 20-amp fuse in a circuit, but you have acquired a ten amps fuse.

This 10-amp fuse will undoubtedly interrupt the circuit’s normal flow of electrical power and perhaps cause the fuse to blow. So, it is paramount to change the faulty fuse with a proper amount of amp.

Average, Blown Fuse Car Repair Cost

Most electrical components of your vehicle must use fuses, which could blow due to an overloaded circuit, short circuit, and inappropriate use.

So, on average, changing or repairing a blown a fuse could cost $125, including labor. Remember, this average cost may vary in car models.

Why Will Fuse Keeps Blowing In Car Cigarette Lighter?

Without mixing words, the cigarette lighter fuse keeps blowing in your car because of external and internal problems. And the main problem that keeps the fuse blowing is when the circuit draws more amperage than the required amperage of the fuse.

It will still blow even if you replace it with another of the same amperage.

To this end, you could mainly deal with internal problems if the cigarette lighter’s fuse always blows, even without you plugging any device into it. That said, you would be clear that there is no external object in the socket; instead, there is a problem somewhere in the circuit.

Similarly, the external problem that keeps the fuse from blowing is the shorted-out power wire. That said, the power wire connecting to your vehicle’s cigarette lighter might have been rubbed or burnt and come in contact with metal on the dashboard.

Hence, finding the solution to the blowing fuse of the cigarette lighter is due to the shorted-out power; check for continuity between the ground and the cigarette power wire.

Why Will A 15 Amp Fuse Keeps Blowing In Car?

Like all other car fuses blow due to short circuits or higher amperage. In the same vein, a 15-amp fuse will keep blowing if the circuit of the 15-amp draws more than a 15-amp. Even after you have replaced the 15-amp fuse repeatedly, it still blows.

Although it may seem that the best and easiest solution to this annoying problem is to replace the 15-amp fuse with a higher or larger fuse like a 20-amp or 30-amp.

This is undoubtedly hazardous since the issue in your circuit may be a short circuit; placing a higher fuse will cause the wire to heat up to some point where it could cause a fire.

So far, you should get the help of a certified technician if you discover a regularly blown a fuse or 15-amp.

The same Fuse Keeps Blowing In the Car.

If the same fuse keeps blowing in your car, it is a result of the following;

A short in the electrical system may cause your fuse to blow rather than overheating the wires or melting them, as the case may be.

However, this short circuit is a poor connection between electrical conductors resulting in an overload in the circuit. On the other hand, fray wires and insulation can also cause the frequent blowing of the same fuse.

Preventive Step On, How To Stop A Fuse From Blowing In A Car?

Although it is impossible to stop a fuse from blowing, it can prevent it to an extent. Hence, to prevent a fuse from blowing in your car, here are some steps that are necessary though;

  • Identify a short circuit and fix it properly.
  • Fix or replace malfunctioning electrical devices
  • Fraying of the wire insulations should be avoided.
  • Avoid wetting electrical conductors to leak fluids from the vehicle.
  • Avoid using the wrong fuse amperage.
  • Avoid turning on unnecessary accessories in your vehicle
  • Always have a regular diagnosis of the electrical systems.

Why Fuse Sparks When Replacing In Car?

Fuse sparks during replacement because of the flow of electric current in the circuit. Although, it is customary to observe a little spark when replacing a fuse or even a power wire.

Nevertheless, persistent sparking could have resulted from a short somewhere in the circuit or even an excessive flowing current more significant for the fuse to handle.

However, I recommend you install the fuse as quickly as possible so you wouldn’t get that sparking experience.


Invariably, a vehicle fuse is a vital component that protects the electrical systems in cars. Although, it detects a dangerous level of current as it disconnects the circuit to offer protection against a high current and short-circuiting.

However, a blown fuse in your car is usually a result of an overloaded circuit (too many fittings turned all at once in your car) or a short circuit problem.

So far, a blown a fuse has some symptoms. When observed and inspected, replacement should be the next alternative using the correct procedure, like consulting your manufacturer’s manual to check the specific fuse and how to replace it successfully.

I recommend contacting your certified technician to diagnose your vehicle’s electrical systems thoroughly. Do like and share this informative post with others!

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