Alfa Romeo 156 (1997 – 2006) fuse and relay

Alfa Romeo 156 (Series 932) – produced by the Italian car company Alfa Romeo since 1997. It replaced the old 155 model and was produced in two versions: a sedan and a Sportwagon with a configuration of seven different engines. The model underwent two restyling: the first in 2002, and the second in 2003. This material provides fuse and relay diagrams for Alfa Romeo 156 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 release with a description of the purpose of the elements and their location.

photo alfa romeo 156


  • fuse box in the cabin under the steering wheel;
  • additional fuse box behind the main one;
  • relay in the passenger compartment behind the glove box;
  • fuse box in the engine compartment;
  • relay in the engine compartment.

Passenger compartment

Main fuse box

The main box is located under the main panel to the left of the steering wheel.

real photo

Access to the fuse box
access to the main unit


photo fuse box alfa 156


general scheme with decoding

Protected components

1(10A) RH headlamp-high beam
2(10A) Headlamp high beam indicator, LH headlamp – high beam
3(20A) Trunk / tailgate lamp, central locking
4(10A) Headlamp adjustment, right headlamp – low beam
5(30A) Electric front power windows
6(10A) Left brake light lamp, left tail lamp, left license plate lamp, rear right fog lamp, front right side lamp
7(10A) Left license plate lamp, rear left fog lamp, front left side marker lamp, right stop lamp, right rear marker lamp
8(10A) LH headlamp – low beam
9(15A) Cigarette lighter heater / air conditioner
10(20A) Windshield wiper / washer
11(20A) Horn
12(10A) Anti-theft system, anti-lock braking system (ABS) (with ESP), audio system, instrument cluster, interior lamps
13(10A) Anti-lock braking system (ABS), central locking, power door mirrors, power windows, glove compartment lamp, reversing lights, brake light (top)
14(10A) Alarm
15(30A) Heated door mirrors, heated rear window

The fuse number 9 is responsible for the cigarette lighter.

Fuses above the main unit


additional fuse box alfa romeo 156


For vehicles which were issued since 1999 the year

1(7.5A) Power mirrors, power window switch lights, glove box light, turn signals, rear window defogger, heater / air conditioner, auxiliary ignition circuit relay
2(10A) Airbag
3(10A) Anti-lock braking system, instrument cluster, instrument cluster indicators, control lights
4(20A) Rear left door power window motor
5(20A) Rear right door power window motor
6(25A) Suroof
7(30A) Tailgate / tailgate actuator
8(30A) Heated seats
10(10A) Anti-lock braking system (ABS)
11Engine management system. immobilizer
12Engine management system. immobilizer
13(15A) Engine management
14(15A) Engine management
15(15A) Fog lights

 For cars manufactured before 1999

1(15A) SRS (airbag), anti-lock braking system (ABS)
2(7.5A) Engine management system, immobilizer
3(30A) Heated seats
4(10A) Engine management
5(15A) Engine management
6(25A) SunRoof
7(7.5A) Engine management system, immobilizer
8(10A) Anti-lock braking system, instrument cluster, instrument cluster indicators, control lights
9(7.5A) Power mirrors, seat heater, heated rear window, turn signals, sunroof


(10A) Airbag

Relay behind glove compartment


relay block alpha 156

To access, you need to open the glove compartment and remove the cover A. The location of the fuses and relays depends on the equipment of your car.

relay alfa romeo 156

  1.  (20A) – Headlight washers (03/99 →)
  2. (20A) – Headlamp washers (→ 02/99)
  3. (20A) – Rear left door window regulator motor (→ 02/99)
  4. (20A) – Rear Right Door Window Regulator Motor (→ 02/99)

Engine compartment

Battery fuse box

To access it, you need to open 2 covers in different directions.

photo 156


fuse in the engine compartment


1(80A) Instrument panel fuse / relay box
2(30A) Ignition switch
3(70A) Battery
4(40A) Air conditioner / heater blower motor
5(30A) Engine management
6(40A) Cooling fan motor (Twin Spark without AC / V6)
7(30A) Automatic transmission ^ 624 ^, cooling fan motor (Twin Spark with AC / V6 24V), segmental manual transmission (2.0 Twin Spark)
8(20A) Segmental manual transmission (2.0 Twin Spark)
9(50A) ABS anti-lock braking system (no ESP)
10(70A) Auxiliary heater (Diesel)

Relay box

It is located near the battery on the bracket and is covered with a protective cover. The number of relays and the circuit may vary depending on the vehicle modification.


relay alfa romeo 156 3block


  • A – Cooling Fan Motor Relay-2nd Speed ​​(Twin Spark with A / C)
  • B – Cooling fan motor relay – 1st speed
  • C – Fuel pump relay
  • D – Relay of a control system of the engine
  • G – Relay of the electromagnetic clutch of the air conditioning compressor
  • F – Relay for variable valve timing (1.6 TwinSpark)
  • E – Fuel heater relay

User’s manual

And as a bonus, we offer you a free download of a book on auto repair and operation in PDF format: ” download “.

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