The Replacement Of A Car Fuse

Although fuses are inconspicuous in daily use, vehicles without fuses will become a pile of soulless scrap iron, because lights, horns, starters, air conditioners and other vehicle electrical equipment need the protection of fuses, otherwise once the current in the line is too large, it is likely to burn out the electrical appliances. Now we know the important role of fuses. In case the vehicle parts "break down" one day, don't rush to replace them. We can first see if there is a fuse problem.

What is a car fuse

Fuse is just our usual name. Its real name is "fuse". Its main function is to fuse when the circuit current is abnormal or more than 2 times its rated current, playing the role of circuit protection.

Fuse has two important parameters, one is rated current; The other is the rated voltage. When using, the fuse of corresponding specification should be selected according to the current and voltage of the fuse.

Automotive fuses are divided into high current fuses and medium and low current fuses. Medium and low current fuses are common in general vehicles, which are divided into plug-in fuses, fork bolt fuses, screw on fuses and tube fuses. Among them, we are most often exposed to medium and small fast melting plug-in fuses. The following is about the plug-in fuse.

The specification of automotive plug-in fuse is generally 2a to 40a, and the ampere value will be marked on the top of the fuse. In addition to judging the ampere value by looking at the logo on the top of the fuse, we can also judge by the color of the fuse. Different colors represent different ampere values. The international standards are: 2A gray, 3A purple, 5A orange, 7.5A coffee, 10a red, 15A blue, 20A yellow, 25A colorless and transparent, 30A green, 35A lavender, 40A dark orange.

Where is the fuse in the car

Because there are many electronic devices in the car, and each electronic device will be equipped with an independent fuse, in order to facilitate future replacement and maintenance, engineers will concentrate the fuse in one place when designing the vehicle, which is called the fuse box.

Generally, there are two fuse boxes on the vehicle. One is located inside the engine compartment, which is responsible for the normal operation of external electrical appliances of the vehicle, such as the safety protection of circuits such as lamps, horns, trip computers, air conditioning compressors, glass water motors, etc; The other is located on the left side of the steering wheel or in the glove box and is responsible for the normal operation of electrical appliances in the car, such as window lifting, cigarette lighter, electric seat and airbag.

Generally, the fuse box in the engine compartment is located on the driver's side, and some models' fuse boxes are on the opposite side, but usually the fuse box will be designed on both sides of the engine compartment for timely replacement.

Find out the electronic equipment corresponding to the fuse

It is very simple to know the electronic equipment corresponding to each fuse. Generally, the example diagram inside the fuse box will identify the electronic equipment responsible for each fuse. Just align the diagram with the fuse to find the corresponding position. There will be some models with no pictorial logo inside the fuse box. We can check it by referring to the vehicle manual.

Although the fuse box of some imported models has a picture mark inside, all the parts are expressed in English abbreviations, which will be inconvenient to repair or replace.

How to replace the fuse by yourself

After knowing the electronic equipment corresponding to the fuse, we can replace it by referring to the image. The fuse box is generally fixed by a buckle, and the fuse can be opened by carefully removing the box. Many models will be equipped with a small clip inside the fuse box, which is a tool specially used to replace the fuse, but it should be noted that not all models are equipped with such a small clip inside the fuse box.

When replacing a fuse, it should be noted that the fuse with the correct amperage must be selected. Do not increase the current specification of the fuse at will. Fuses exceeding the current specification will make electronic equipment work abnormally. In addition, remember not to use wire instead of fuse.

Routine maintenance and precautions of automobile fuse

As the fuse is connected to each electronic equipment of the vehicle, remember not to directly clean the engine compartment with water during daily maintenance, otherwise it is very easy to cause fuse short circuit and cause vehicle electronic equipment failure. If you want to clean the engine compartment, you can use special detergent or wet towel to wipe it.

It is very easy to burn the fuse of the cigarette lighter when using high-power electrical appliances or using one to three connectors. Generally, 15a-25a fuse is used for vehicle cigarette lighter, so try to avoid using one to three interface.

Determine several conditions of fuse burnout

Make sure that the battery is charged but the vehicle cannot be started. It is likely that the fuse responsible for starting the motor is burnt out. It should be noted that when the vehicle is found unable to start, remember not to ignite continuously. Continuous ignition will cause the embarrassing situation of continuous battery discharge and complete loss of power.

During driving, the vehicle tachometer displays normally, but the speedometer displays zero, and the ABS warning light is on, which indicates that the fuse corresponding to ABS is burnt out. Some irregular businesses will unplug the fuse of ABS management when transporting vehicles, in order not to increase mileage, but this brings great hidden dangers. Vehicles without ABS will be very dangerous in an emergency.

If you press the glass water switch without spraying glass water, it may be because there are foreign objects blocking the nozzle or the cold weather has frozen the nozzle. At this time, remember not to press the glass water switch continuously. Pressing the switch for a long time will cause the motor to overheat and burn the corresponding fuse.

Fuse is an important component connecting various electronic parts of the vehicle. Understanding the location of the vehicle fuse box and the component diagram corresponding to each fuse can enable us to find the burnt fuse and replace it faster. You can have a box of fuses in your daily car, which may come in handy someday.