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

alfa romeo brera 2005 2010 fuse box near battery
alfa romeo brera 2005 2010 fuse box near battery

To gain access to the fuses, loosen the two fastening screws A and remove the protection cover B

alfa romeo brera 2005 2010 fuse box near battery 02
alfa romeo brera 2005 2010 fuse box near battery 02
Assignment/DesignationNo.Amps
Boot control unit
Instrument panel control unit
F0170A
Climate control system fanF0240A
Electric steering lockF0320A
Brake branch point (pump)F0440A
Brake branch point (solenoid valve)F0540A
Radiator fan (low speed)F0640A
Radiator fan (high speed)F0750A
Headlight washerF0920A
HornsF1015A
Electronic injection sundry secondary servicesF1115A
Right main beam headlightF1410A
Left main beam headlightF1510A
+ INT for electronic injection systemF167.5A
Electronic injection primary servicesF1710A
Engine control branch pointF1815A
Climate control system compressorF197.5A
Rear window heatingF2020A
Fuel pump supplyF2120A
Ignition coils/injectors (petrol versions)F2215A
Electronic injection primary services (diesel versions)F2220A
Sound system/Radio navigation system powerF2315A
Front fog lightF3015A

Fuse box on the dashboard

alfa romeo brera 2005 2010 dashboard compartment
alfa romeo brera 2005 2010 dashboard compartment

To gain access to the fuses in the fuse box on the dashboard, loosen the fastening screw A and remove the cover B

alfa romeo brera 2005 2010 dashboard compartment fuse box
alfa romeo brera 2005 2010 dashboard compartment fuse box
Assignment/DesignationNo.Amps
Right dipped beam headlightF1215A
Left dipped beam headlightF1315A
Body Computer branch point/Headlight washer relay coilF317.5A
Driver’s door branch point/passenger’s door branch point/ignition deviceF3215A
Not usedF33
Not usedF34
Water in diesel fuel filter sensor/flow meter
Brake light switch/central console control panel
Cruise Control
Reversing light
AQS sensor
F357.5A
Not usedF36
Instrument panel branch point
Front headlight control unit/Power to control unit for gas-discnarge headights (Bixenon) (where provided)
Third brake light
F3710A
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
F3815A
Heated rear windowF4030A
Windscreen washer/rear window washer nozzle demister
Heated mirror demister
F417.5A
Brake branch point power (ABS/VDC) – Steering angle branch point – Yawing sensorF427.5A
Windscreen wiper/washerF4330A
Front cigar lighter on central consoleF4410A
Powered sun curtain control unitF4620A
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
F497.5A
Air Bag systemF507.5A
Tyre pressure monitoring system control unit
Sound system presetting
F517.5A
Rear window washer/wiperF5215A
Instrument panel branch point
Direction indicators
Hazard lights
F5310A

Fuse box on the battery positive pole

alfa romeo brera 2005 2010 battery positive pole fuse box
alfa romeo brera 2005 2010 battery positive pole fuse box

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

alfa romeo brera 2005 2010 battery positive pole fuse box 02
alfa romeo brera 2005 2010 battery positive pole fuse box 02
Assignment/DesignationNo.Amps
Engine compartment control unitF70150A
Instrument panel control unitF7170A
Fuel pre-heating unit (diesel versions)F7360A

Fuse box in the boot (left-hand side)

alfa romeo brera 2005 2010 battery boot fuse box left
alfa romeo brera 2005 2010 battery boot fuse box left

To gain access to the fuses, remove the cover A as shown by the arrow

alfa romeo brera 2005 2010 battery boot fuse box left 02
alfa romeo brera 2005 2010 battery boot fuse box left 02
Assignment/DesignationNo.Amps
Sound system amplifier with DSP
HI-FI audio amplifier
F5430A
Front left seat movement controlF5625A
Front loft scat warmingF577.5A
FreeF58
FreeF59
Front right seat movement controlF6025A
Subwoofer amplifierF6115A
FreeF62
FreeF63
FreeF64
FreeF66
Front right seat warmingF677.5A
FreeF68
FreeF69
FreeF77
Left power windowF7830A
FreeF79
Right power windowF8030A

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.

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