
There are generally two fuse boxes in a car, and the car fuses are located inside these boxes. One is positioned on the right side of the engine compartment, primarily responsible for the safety of external electrical components such as the ECU, windshield washer, headlights, horn, ABS circuit, etc. The other is located on the lower left side of the steering column, mainly ensuring the proper functioning of devices like the cigarette lighter, power windows, electric seats, airbags, etc. In a car's electrical circuit, there are numerous electrical devices connected by wires of different colors, among which the most crucial component is the fuse. The term 'fuse' is a conventional name, referred to as a 'fusible link' in national standards. The role of a fuse is to protect the circuit (wiring) and electrical equipment. A car fuse is a type of current fuse that will blow within seconds if the circuit current exceeds twice the fuse's rated current, thereby protecting the circuit. It is commonly used for overcurrent protection in automotive circuits and industrial equipment. During vehicle operation, if any electrical device stops working, it may be due to a blown fuse, which should be replaced promptly. Precautions when using fuses: Replace fuses according to the rated current indicated on the fuse box cover; do not use a fuse with a higher current rating than specified. If a new fuse blows immediately, it indicates a potential fault in the circuit system, which should be repaired as soon as possible. In the absence of a spare fuse, during emergencies, you can replace it with a fuse from another device that does not affect driving and safety. If a fuse with the same current rating cannot be found, you may use one with a lower rated current than the original fuse.

When I used to repair cars, I often looked for the fuse box. There are two common locations in a vehicle. Open the hood, and you'll find a black plastic box, usually near the battery or in the corner by the windshield. Another one is located under the driver's seat, with a removable cover on the lower left side of the steering wheel. The box has clear icons printed inside, indicating the function of each fuse, such as headlights or the cigarette lighter. Remember to disconnect the negative terminal of the battery before handling, and use the small clip provided in the box to remove the fuse. Shine a flashlight to inspect—a blown fuse will have a broken metal wire in the middle. If you're unsure, take a photo and ask a mechanic for peace of mind.

Last time my car lights suddenly went out, and after struggling for a while, I found it was a fuse issue. In most regular family cars, the fuses are located in the FUSE-labeled box on the right side of the engine compartment. Just open the latch to see a dense row of small colored squares. The ones in the cabin are harder to find—you have to lie on the floor mat and reach under the dashboard for a matchbox-sized plastic cover. Different positions control different functions: red is usually for the main power, yellow for the air conditioning, and blue for the lights. It's advisable to remember the specifications of spare fuses in advance, with 15A and 20A being the most commonly used. If you can't find the location, checking the last chapter of the owner's manual will surely have a schematic diagram.

My experience is that the location of the fuse box varies by car. In older models, it's usually behind a panel near the driver's left knee—just pull to open. Newer models can be trickier, with some hidden behind the glove compartment requiring three screws to be removed. Listen for the metallic click of the clips when searching. Inside, the fuses are numbered, corresponding to the table on page 78 of the manual. Always replace with the exact same amperage; a mini fuse kit from the supermarket works in a pinch. Don't forget to test with the key after replacement to confirm functionality—that's the most reliable method.


