Mazda CX-3 (2018) – fuse and relay box
Diagrams of fuse boxes and relays – Mazda CX-3
2018.
The cigarette lighter (sockets) is fuse 5 in the fuse box in the passenger compartment.
Engine compartment
| Number | Amperes [A] | Description |
| 1 | 15 A. | To protect various circuits |
| 2 | 7.5 amps | Engine control system |
| 3 | 10 A. | Sunroof (some models) |
| 4 | 15 A. | Overhead light |
| 5 | 7.5 amps | Engine control system |
| 6 | 15 A. | Public address system |
| 7 | 10 A. | Instrument cluster |
| 8 | 7.5 amps | Airbag |
| 9 | 7.5 amps | Instrument cluster (some models) |
| 10 | 7.5 amps | Public address system |
| 11 | 15 A. | Engine control system |
| 12 | 15 A. | Engine control system |
| 13 | 15 A. | Engine control system |
| 14 | 25 A. | Public address system |
| 15 | 7.5 amps | Air conditioner (some models) |
| 16 | 15 A. | Transmission control system (some models) |
| 17 | 15 A. | Transmission control system (some models) |
| 18 | 25 A. | Electric door locks |
| 19 | 20 A. | Headlight (right) |
| 20 | 7.5 amps | Engine control system |
| 21 | 20 A. | Rear lights;
Number plate lighting; Parking lights. |
| 22 | 15 A. | Heated steering wheel (some models) |
| 23 | 25 A. | Overhead light |
| 24 | 15 A. | Fog lights (some models) |
| 25 | 20 A. | – |
| 26 | 10 A. | Stop lights |
| 27 | 15 A. | Horn |
| 28 | 20 A. | Headlight (left) |
| 29 | 30 A. | ABS;
Dynamic stability control system (some models). |
| 30 | 15 A. | Emergency lights;
Direction indicators. |
| 31 | 15 A. | Fuel system |
| 32 | 25 A. | – |
| 33 | 20 A. | Windshield wiper |
| 34 | 50 A. | To protect various circuits |
| 35 | 30 A. | – |
| 36 | 30 A. | – |
| 37 | 50 A. | ABS;
Dynamic stability control system (some models). |
| 38 | 20 A. | Engine management system (some models) |
| 39 | – | – |
| 40 | 30 A. | – |
| 41 | 40 A. | Cooling fan |
| 42 | 40 A. | Engine control system |
| 43 | 60 A. | – |
| 44 | 40 A. | Rear window defogger |
| 45 | 30 A. | To protect various circuits |
| 46 | 30 A. | Engine control system |
| 47 | 40 A. | Air conditioner |
| 48 | 30 A. | Electric windows |
| 49 | 40 A. | – |
Passenger compartment
The fuse box is located on the left side of the vehicle, under the dashboard, near the door.
| Number | Amperes [A] | Description |
| 1 | – | – |
| 2 | – | – |
| 3 | – | – |
| 4 | – | – |
| 5 | 15 A. | Accessory sockets |
| 6 | – | – |
| 7 | 7.5 amps | AT gear shift indicator (some models) |
| 8 | 7.5 amps | Power side mirrors |
| 9 | – | – |
| 10 | 25 A. | Electric windows |
| 11 | 15 A. | Rear window wiper and washer |
| 12 | 30 A. | Electric seat (some models) |
| 13 | – | – |
| 14 | 15 A. | – |
| 15 | 20 A. | Seat (some models) |
| 16 | 7.5 amps | Mirror defogger (some models) |