Fuses and relays Alfa Romeo 166 (series 936; 1998 - 2007)

Alfa Romeo 166 is a business class sedan produced by the Italian company from 1998 to 2007. The design was developed under the direction of the company's chief designer Walter De Silva. The car went through a restyling in 2003. In this article we will understand in detail fuse box diagrams Alfa Romeo 166 (series 936) 1998, 1999, 2000, 2001, 2002, and 2003 2004, 2005, 2006, 2007 years of manufacture.

General view of the car
Here you will find the locations and photos of the mounting blocks. Also, we will separately mark the fuses responsible for the cigarette lighter and the fuel pump.

In the trunk

The location of the fuse box in the luggage compartment of the car.
It is located behind the cover plate on the right side.

Models 1998-2002 release


No. Description A
1 Rear window heater 40
2 Door mirror heater 10
3 Trunk lid opening actuator 20
4 Fuel tank filler flap opening actuator 25
5 Seat heater 20
6 Trailer electrical connector 15
7 Power seat right 30
8 Power windows rear 25
9 Power seat left 30
No. Relay modules
A Rear window heater
B Trunk lid opening actuator
C Fuel filler neck lock actuator
D seat heater
E Luggage compartment lighting lamp timer

Models 2003-2007 release

General view.


No. Description A
1 Heated rear window 30
2 Heated mirrors 7.5
3 BI/ABI control module - front right power window 20
4 Preliminary settings  
5 Front right power seat 30
6 Front left power seat 30
7 Heated windshield 15
8 Front right seat heating 10
9 Front left heated seat 10
10 electric sunroof 20
11 Preliminary settings  
12 Signaling system (control module) / Direction indicators 10
13 Additional heater (JTD versions) 10
14 ABI control unit - rear left power window 20
15 Remote control receiver / Parking sensors (control unit) / Alarm system (control unit) / Sun visors / Electrochromic mirror / Seat heating control lamp / Mirror control / Power windows (LOCK control lamp) / Rain sensor 10
16 Rear outlet 20
17 ABI module - power windows in the rear part of the passenger compartment 20
18 ABI module - front left window elevator module 20
19 central locking system 20
20 Audio amplifier 25

In the passenger compartment

Location of the fuse box in the passenger compartment
It is located under the dashboard to the left of the steering wheel behind the cover. To access it, remove the cover by unscrewing the retaining screw.

General view of the Alfa Romeo 166 cabin fuse box.

No. Description A
F1 Stop lights, indicators, instrument cluster 15
F2 SRS electronic control unit 10
F3 Fuel pump fuse Alfa Romeo 166 15
F4 Audio system 15
F5 Duffel box illumination lamp, mirror folding control unit, speed maintenance system control unit, anti-theft system control unit, center console multifunction switch (except for models with automatic transmission), gear sensor, air conditioner compressor solenoid relay, switch illumination, central locking control unit, air conditioner/heater control panel 10
F6 Air conditioner condenser fan motor relay 5
F7 Audio/navigation system, air conditioning/heater control unit, cigarette lighter fuse (front) 10
F8 Indicators / alarms, multifunction control unit 10
F9 Interior auto-dimming rearview mirror, rain sensor, road map reader, heated front seats control unit, power window regulator, air conditioning control unit, illuminated light bulb in the cosmetic mirror 5
F10 Electronic transmission control unit 5
F11 Multifunction control box 20
F12 headlight washer 20
F13 Exterior light bulbs, reversing light switch, sunroof control unit 15
F14 Windshield wiper/washer 25
F15 Power window controller (front) 25
F16 Electronic engine control unit, immobilizer control unit 5
F17 Interior lamps / light-off delay function, anti-theft system control unit, anti-theft system signal control unit, diagnostic connector, transmission mode switch illumination 10
F18 Telephone, instrument cluster, audio / navigation system, air conditioner / heater control panel 5
F19 Power connector for optional equipment, central locking control unit 25
F20 Immobilizer control unit, electronic engine control unit - gasoline engine models 5
R1 Reverse light relay, power mirrors and window heaters, power window heater relay
R2 Indicator relay / alarm relay
R3 Headlight washer delay relay

In the engine compartment

Cars 2003 - 2007 release (restyling)

The location of the fuse box in the engine compartment of the car since 2003
It is located near the battery, behind a plastic cover.

Photo is an example.

No. Purpose A
1 Ignition lock 20
2 Climate control 30
3 ABS/ESP control unit 40
4 Cooling fan, high speed 60
5 Cooling fan, low speed 30
6 Ignition lock 10
7 ABS/ESP control unit 40
8 Glow Plug (Diesel) 50
9 Reserve -
10 Right dipped beam 15
11 Horn (beep) 15
12 Headlight range control, Left headlight 15
13 Compressor 7.5
14 Reserve -
15 Ignition 15
16 Fog lights 15
17 Additional heater 20
18 Ignition 7.5
19 Alfa Romeo 166 fuel pump fuse 15
20 Ignition 10
21 Ignition 15
22 Ignition  
23 diesel fuel heater  
No. Relay modules
R1 dipped beam
R2 Climate control
R3 Horn relay
R4 Fog lamp relay
R5 Ignition relay
R6 Cooling fan speed 2
R7 Air conditioning compressor
R8 Cooling fan, 1st stage relay
R9 Fuel pump relay
R10 Main relay
R11 Immobilizer
R12 Diesel fuel heater

Cars 1998 - 2002 release

Fuse box #1

Place of installation of the first fuse box in the engine compartment of a car up to 2003
The first unit is located behind the protective cover closer to the windshield.

Block #1 diagram
No. Description A
F1A Cabin fuse box circuit protection (F4/F8/F10-F12/F15/F17-F20) 60
F1B Power supply to the ignition auxiliary circuits 30
F2 Refrigerant control valve (air conditioner) 30
F3 ABS electronic control unit 10
F4 Automatic transmission 5
F5 Fuel Heater - Diesel 15
F6 Electronic Engine Control Module (ECM)(2.0TS) 15
F7 Electronic engine control unit (models with a gasoline engine) 15
F8 Starter 30
F9 Electronic engine control unit 30
F10 Additional heater (Diesel) 30
F11 Power connector for optional equipment 25
1 Air conditioner / heater fan motor relay
2 Starter relay
3 Fuel Heater Relay - Diesel
4 Engine management relay
5 Fuel pump relay Alfa Romeo 166
6 Auxiliary Heater Relay - Diesel (If Equipped)
Fuse box #2

Located behind the trim near the left headlight. To gain access, remove the cover (A) by turning the retaining screws (B).

Fuse Block #2 Diagram
No. Description A
F1 High beam right headlight 10
F2 High beam left headlight 10
F3 Fog lights 15
F4 Horns (beep) 15
F5 Air conditioner compressor solenoid clutch 10
F6 Dipped beam left headlight 15
F7 Dipped beam right headlight 15
F8 Cooling fan motor 50
F9 Cooling fan motor - low speed 50
No. Relay modules
1 Cooling fan 1
2 Cooling fan 2
3 dipped headlights
4 high beam headlights
5 Horn relay
6 Air conditioning compressor
7 Fog lights
Related fuse diagrams
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