The designations of the circuits protected by the fuses are indicated on the fuse box cover.
Before removing a fuse, turn off the circuit in question (or the ignition), then pull the fuse out of the contacts. The wire should be visible inside the fuse; if the fuse is blown, the wire will be broken or melted.
A fuse can blow for two reasons, which can be determined by visually inspecting the removed fuse.

Always use fuses of the correct rating. Never use

Do not replace a fuse more than once without eliminating the source of the fault. The current protected by the fuse is indicated on the top of the fuse: note that fuses are colored differently for easy identification.
If a fuse blows immediately after replacement, do not replace it again until you have installed and corrected the cause of the fault. In most cases, the cause of the fault is a short circuit caused by poor insulation. If the fuse protects several circuits, try to find the circuit that is causing the fuse to blow, turning on each circuit in turn (if possible). Always keep a set of spare fuses of different ratings in the car. They should be secured to the base of the fuse box.
Mounting block located in the engine compartment: 1 - Interior heater fan relay E 51; 2 - place for the relay for switching on the engine cooling system fan at high speed E 44; 3 - relay for switching on the engine cooling system fan at low speed E 43; 4 - starter relay E 41; 5 - place for air conditioner relay E 50; 6 - horn relay E 45; 7 - fuel pump relay E 49; 8-13 - fuse links and fuses"; 14 - place for the E 47 alarm relay; 15-27 - fuse links and fuses; 28 - fuse replacement tweezers; 29 - Connector E 55; 30 - power supply relay of the electronic engine management system E 42
Mounting block located in the car interior: 1-29 - fuse links and fuses; 30 - fuse replacement tweezers; 31 - spare fuses
