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Causes of car fuses malfunctioning Fuses are found in different types of cars, and are part of the electrical circuits of various devices connected to the car such as radios, wipers, electric windows and other devices. current, in order to protect wires or devices from fire and damage.

How car fuses work

All types of car fuses work with the same mechanism, as it consists of two conductive metal rods connected by a wire capable of withstanding a certain amperage and mentioned on its cover, for example 10 amps. The fuse is part of every circuit, and if the current strength exceeds the value specified for the fuse, the wire connecting the two rods of the fuse breaks and the circuit stops working.

What are the causes of damaged car fuses

As mentioned earlier, the high current is the direct cause of damage to the fuses, but what are the reasons leading to the high value of the current? Here are the most prominent reasons:

• Short circuit: When the positive and negative poles come into contact, it causes a short circuit, which leads to damage to some parts of the electrical circuit in the car.
• Device defect: What is meant by this is an internal failure in the device, or that it needs a higher current due to the defect in it.
• Using the wrong fuse: As each type of car has a specific fuse designed for it, and if a different type is installed, this will lead to its damage and the occurrence of an internal failure in the device.

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How to check car fuses

To check the fuses, it is necessary to know where they are in the vehicle by consulting the user manual, but they are usually located under the steering wheel on the left side. You can check the fuses in several ways, the most prominent of which are:

• Visual inspection: after locating the fuses, you can examine them by removing them from their place and looking at the wire connecting the two rods. The fuse cover is usually transparent and you can see through it, and if it is sealed, the wire can be seen through a hole in the casing.
• Testing device: The fuses can be tested without removing them, by owning the testing device, which is in the form of a screwdriver with a light, so that one end of the device is connected to the body of the uninsulated vehicle, and the other. The tip is on the fuse strips, and if the device light comes on in both bars it indicates that the fuse is working, and if it doesn't light, it is an indication that it is faulty.
• Multimeter: This method is similar to the previous method, but a multimeter is used, so the black electrode is connected to the negative pole of the battery, or the non-insulated car body, then connect the red electrode of the device to the two fuse rods, and the reading must be about 12 volts as proof that the fuse is working , and if there is no voltage difference, it means that the fuse is defective.

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And here we have come to the conclusion of the lines of this article, which was titled Causes of Car Fuse Malfunction, and we have learned how car fuses work and how to fix it when it burns and is damaged.