Each individual fuse is used to protect a particular electrical circuit. The fuse identification table is usually glued to the cover of the mounting block, from its inside.
The mounting block uses fuses of a compact design, equipped with bayonet contacts, and, if necessary, easily removed from their sockets in the block with your fingers. In case of failure of any of the consumers of electricity, first of all, you should always check the condition of the corresponding fuse. The fuse body is made of transparent plastic, through which it is easy to determine the status of the working jumper (see illustration below).
When replacing a blown fuse, make sure that the prepared replacement fuse matches the type of the failed fuse. Fuses designed for different rated currents may not physically differ from each other in any way, while not being interchangeable. Each of the electrical circuits is designed for different operating parameters and needs a different degree of protection, therefore, replacing a fuse designed for a certain current strength with one that does not correspond to it in terms of parameters is fraught with the most serious consequences (until the fire). Fuse operating parameters (rated current) usually marked on its plastic case.
If the new fuse also fails immediately after installation, it makes no sense to replace it further - first, the cause of the overload in the circuit should be identified and eliminated. In most cases, this is a short circuit in the wiring, caused by damage to its insulation.
All models of vehicles covered in this manual have a main fuse, usually rated at 80 or 100 amps. The fuse provides general protection for all circuits connected to the battery and is knocked out when an overload occurs in any of them, thereby preventing failure of the main braid of the electrical wiring. The main fuse consists of a plate-like metal bridge that melts easily when electrical overloads occur. Always disconnect the battery before replacing the main fuse. A replacement main fuse can always be purchased from the original service center of the vehicle manufacturer.
Attention! If the stereo system installed in the car is equipped with a security code, before disconnecting the battery, make sure that you have the correct combination to activate the audio system!
The main fuse is located in the mounting block located in the engine compartment of the car, outwardly it does not differ much from other fuses and changes in a similar way. Remember that a failed main fuse must be replaced with a replaceable one designed for the same amperage.