The Alfa Romeo Brera is a sports coupe produced by the Italian car manufacturer Alfa Romeo from 2005 to 2010. With its sleek and aggressive design, the Brera is a head-turner on the road. In addition to its stunning exterior, the Brera also boasts a range of impressive performance features and advanced technologies, including a sophisticated electrical system that includes a fuse box and relay.
This article will provide an in-depth look at the Alfa Romeo Brera’s electrical components, including the fuse box and relay. We will explore how these components work, where they are located, and common issues that Brera owners may experience with them.
The Fuse Box and Relay System
The Alfa Romeo Brera’s fuse box and relay system is responsible for distributing electrical power to the various components of the car, such as the headlights, radio, and air conditioning. The fuse box contains a series of fuses that protect each circuit from electrical overload, preventing damage to the car’s electrical system.
The relay, on the other hand, is an electrical switch that is activated by a signal from the car’s computer or a specific sensor. The relay is responsible for turning on and off various components, such as the fuel pump and cooling fan. If the relay fails, the component it controls may not function properly.
In the Brera, the fuse box and relay system is located in the engine compartment, near the battery. This placement makes it easy for mechanics to access these components when performing maintenance or repairs on the car.
Common Issues with the Fuse Box and Relay System
Like any electrical component, the fuse box and relay system in the Alfa Romeo Brera can experience issues over time. One common problem is a blown fuse, which can occur when too much current flows through a circuit. If a fuse blows, the affected component will stop working, but it can easily be replaced.
Another common issue is a faulty relay, which can cause a component to malfunction or not function at all. For example, if the fuel pump relay fails, the engine may not start. In this case, the relay would need to be replaced to restore proper function to the affected component.
In conclusion, the Alfa Romeo Brera’s electrical system, including its fuse box and relay system, is an important component of the car’s overall performance. By understanding how these components work and being aware of common issues, Brera owners can help ensure their car stays in top condition. Regular maintenance and prompt repairs can go a long way in ensuring the longevity and reliability of the Brera’s electrical system.
(2005-2010) Alfa Romeo Brera fuse box and relay with Diagram
Fuse box near the battery
To gain access to the fuses, loosen the two fastening screws A and remove the protection cover B
| Assignment/Designation | No. | Amps |
| Boot control unit Instrument panel control unit | F01 | 70A |
| Climate control system fan | F02 | 40A |
| Electric steering lock | F03 | 20A |
| Brake branch point (pump) | F04 | 40A |
| Brake branch point (solenoid valve) | F05 | 40A |
| Radiator fan (low speed) | F06 | 40A |
| Radiator fan (high speed) | F07 | 50A |
| Headlight washer | F09 | 20A |
| Horns | F10 | 15A |
| Electronic injection sundry secondary services | F11 | 15A |
| Right main beam headlight | F14 | 10A |
| Left main beam headlight | F15 | 10A |
| + INT for electronic injection system | F16 | 7.5A |
| Electronic injection primary services | F17 | 10A |
| Engine control branch point | F18 | 15A |
| Climate control system compressor | F19 | 7.5A |
| Rear window heating | F20 | 20A |
| Fuel pump supply | F21 | 20A |
| Ignition coils/injectors (petrol versions) | F22 | 15A |
| Electronic injection primary services (diesel versions) | F22 | 20A |
| Sound system/Radio navigation system power | F23 | 15A |
| Front fog light | F30 | 15A |
Fuse box on the dashboard
To gain access to the fuses in the fuse box on the dashboard, loosen the fastening screw A and remove the cover B
| Assignment/Designation | No. | Amps |
| Right dipped beam headlight | F12 | 15A |
| Left dipped beam headlight | F13 | 15A |
| Body Computer branch point/Headlight washer relay coil | F31 | 7.5A |
| Driver’s door branch point/passenger’s door branch point/ignition device | F32 | 15A |
| Not used | F33 | – |
| Not used | F34 | – |
| Water in diesel fuel filter sensor/flow meter Brake light switch/central console control panel Cruise Control Reversing light AQS sensor | F35 | 7.5A |
| Not used | F36 | – |
| Instrument panel branch point Front headlight control unit/Power to control unit for gas-discnarge headights (Bixenon) (where provided) Third brake light | F37 | 10A |
| Boot locking/unlocking gearmotor Front/rear ceiling light EOBD system diagnostic socket T.P.M.S. control unit Mobile phone presetting Alarm system control unit (for versions/markets, where provided) Climate control system | F38 | 15A |
| Heated rear window | F40 | 30A |
| Windscreen washer/rear window washer nozzle demister Heated mirror demister | F41 | 7.5A |
| Brake branch point power (ABS/VDC) – Steering angle branch point – Yawing sensor | F42 | 7.5A |
| Windscreen wiper/washer | F43 | 30A |
| Front cigar lighter on central console | F44 | 10A |
| Powered sun curtain control unit | F46 | 20A |
| Front ceiling light Radio navigation system Rain sensor control unit Steering wheel branch point Control buttons panel Parking sensor branch point Central console control lights Front seat controls light Windscreen services Mobile phone presetting START/STOP button | F49 | 7.5A |
| Air Bag system | F50 | 7.5A |
| Tyre pressure monitoring system control unit Sound system presetting | F51 | 7.5A |
| Rear window washer/wiper | F52 | 15A |
| Instrument panel branch point Direction indicators Hazard lights | F53 | 10A |
Fuse box on the battery positive pole
To gain access to the fuses in the fuse box on the battery positive pole press the retainers A and remove the protection cover B
| Assignment/Designation | No. | Amps |
| Engine compartment control unit | F70 | 150A |
| Instrument panel control unit | F71 | 70A |
| Fuel pre-heating unit (diesel versions) | F73 | 60A |
Fuse box in the boot (left-hand side)
To gain access to the fuses, remove the cover A as shown by the arrow
| Assignment/Designation | No. | Amps |
| Sound system amplifier with DSP HI-FI audio amplifier | F54 | 30A |
| Front left seat movement control | F56 | 25A |
| Front loft scat warming | F57 | 7.5A |
| Free | F58 | – |
| Free | F59 | – |
| Front right seat movement control | F60 | 25A |
| Subwoofer amplifier | F61 | 15A |
| Free | F62 | – |
| Free | F63 | – |
| Free | F64 | – |
| Free | F66 | – |
| Front right seat warming | F67 | 7.5A |
| Free | F68 | – |
| Free | F69 | – |
| Free | F77 | – |
| Left power window | F78 | 30A |
| Free | F79 | – |
| Right power window | F80 | 30A |
Conclusion
The Alfa Romeo Brera is a stylish and exciting sports car that is equipped with a range of electrical components that were crucial for its operation. The fuse box and relay were two of the most important electrical components of the car, as they were responsible for protecting the electrical system of the car and controlling various electrical components of the car, respectively. It is important to check these components regularly to ensure that they are working properly and to prevent any potential electrical problems with the car.
