Replacing electrical fuses in the indoor unit (located in the passenger compartment near the left end of the instrument panel)
If the electrical equipment fails, first check the serviceability of the electrical fuses in the indoor unit, which is located near the left end of the instrument panel.
1. Turn the ignition switch to the "OFF" position and turn off all on-board electrical consumers.
2. Open the fuse box cover.

3. Remove the fuse from the socket using special pliers, which are located in the fuse box in the engine compartment.

4. Check the fuse condition. If the fuse is blown, replace it with a new one.

5. Insert a new fuse of exactly the same rating into the socket. Make sure the fuse is securely locked into the socket in the panel. If the fuse does not lock into the socket, contact an authorized Mazda dealer. If a spare fuse of the required rating is not available, as a temporary measure, you can use a fuse of the same rating that protects an electrical device that does not significantly affect the operation of the vehicle (for example, a fuse from the socket "audio" ("audio system") or "outlet" ("electrical outlet").
Attention. When replacing blown fuses, always use only original Mazda fuses of the same rating. Otherwise, you may disable the vehicle's electrical equipment system.
6. Replace the cover and make sure it is securely fastened.
Replacing electrical fuses in the underhood unit (in the engine compartment)
If the headlights or other electrical equipment do not work, and the fuses located in the internal unit (inside the car), are in good condition, check the fuses in the underhood unit. If the fuse has blown, it must be replaced with a new one. Perform the following operations.
[Based on website data: Mazbook]
1. Turn the ignition switch to the "off" position and turn off all on-board electrical consumers.
2. Remove the fuse box cover.

3. If any fuse burns out (except the main fuse "main"), it must be replaced with a new one rated for exactly the same nominal current.

Attention.
- Do not attempt to replace the main fuse yourself.
- To replace the main electrical fuse, contact an authorized Mazda dealer. Replacing the main fuse yourself is dangerous because it protects an electrical circuit with a high current load. Incorrectly replacing the main fuse can cause electric shock or a short circuit and a vehicle fire.
4. Replace the cover and make sure it is securely fastened.
