Audi A3 / S3 (8P; 2004-2007) fuses

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In this article, we consider the second-generation Audi A3 / S3 (8P) before a facelift, produced from 2003 to 2008. Here you will find fuse box diagrams of Audi A3 and S3 2004, 2005, 2006, and 2007, get information about the location of the fuse panels inside the car, and learn about the assignment of each fuse (fuse layout).

See other Audi A3 / S3:


Audi A3 / S3 (8L; 1997-2003)…>>

Audi A3 / S3 (8P; 2008-2012)…>>

Audi A3 / S3 (8V; 2013-2020)…>>

Audi A3 / S3 (8Y; 2021-2022)…>>

Fuse Layout Audi A3 / S3 2004-2007

Audi A3 / S3 (8P; 2004-2007)

Instrument Panel Fuse Box

Fuse Box Location

The fuses are behind a cover on the driver’s side. Carefully pry the fuse cover off the instrument panel using the ignition key or a screwdriver.Location of the fuses in the passenger compartment: Audi A3 (2004, 2005, 2006, 2007)

Fuse Box Diagram

Instrument panel fuse box diagram: Audi A3 (2004, 2005, 2006, 2007)

Assignment of the fuses in the instrument panel
№AmpsFunction/component
110ALight switch
Fuel pump relay
Engine control unit
Motronic control unit
Diesel direct injection system control unit
Fuel pump control unit
16-pin connector (diagnostic connector)
25AABS control unit
Brake light switch
Brake pedal switch
310A2004-2005: Power steering control unit
35A2006-2007:
Airbag control unit
Front passenger side airbag deactivated warning lamp
45ATyre pressure monitor button
TCS and ESP button
Reversing light switch
High pressure sender
Air quality sensor
Oil level and oil temperature sender
Heater control unit
Heated rear left seat control unit
Heated rear right seat control unit
Driver seat heating control unit
Front passenger seat heating control unit
55A/10A2004-2005:
Airbag control unit
Seat occupied recognition control unit
Clutch position sender
Brake light switch
Brake pedal switch
2006-2007:
Headlight range control, control unit
Headlight range control regulator
Left headlight range control motor
Right headlight range control motor
65AFunction selection switch 2
Selector lever
Tiptronic switch
Power steering control unit
Data bus diagnostic interface
Mechatronic unit for dual clutch gearbox
Trailer detector control unit
75A2004-2005:
Heater control unit
Headlight range control, control unit
Heated rear left seat switch with regulator
Heated rear right seat switch with regulator

2006-2007:
Garage door operating unit
Trailer detector control unit
Navigation system with CD drive control unit
Navigation operating electronics control unit
Parking aid control unit
Garage door operation control unit
Automatic anti-dazzle interior mirror
810A2004-2005:
Garage door operating unit
Navigation system with CD drive control unit
Parking aid control unit
Garage door operation control unit
Automatic anti-dazzle interior mirror

2006-2007:
Trailer socket
95A2004-2005: Four-wheel drive control unit
105A2004-2005:
Selector lever
Tiptronic switch

2006-2007:
Seat occupied recognition control unit
115A/10A2004-2005:
Trailer socket

2006-2007: Power output module for right headlight
1210ADriver door control unit
Front passenger door control unit
1310ABrake light switch (brake lights)
16-pin connector (diagnostic connector)
145AAutomatic gearbox control unit
1510AOnboard supply control unit
1610ARain and light detector sensor
Heater control unit
Climatronic control unit
Remote control receiver for auxiliary heater
175AConvenience system central control unit -J393-
185ASelector lever
Tiptronic switch
Parking aid control unit
ABS control unit (2004-2005)
1910ARear left door control unit
Rear right door control unit
205A2006-2007: ABS control unit
21--
2240AFresh air blower control unit
2320A/30A2004-2005:
Headlight washer system relay
Headlight washer system pump

2006-2007:
Driver side window regulator motor
2420ACigarette lighter
12V socket
2530AHeated rear window
2620AElectric socket
2715AElectric fuel pump 2 relay
Fuel pump control unit
Fuel pump relay
2830A2006-2007:
Rear left window regulator motor
Rear right window regulator motor
2910A2004-2005:
Motronic control unit
Diesel direct injection system control unit
Simos control unit
Fuel pump control unit
Front passenger side airbag deactivated warning lamp

2006-2007:
Air mass meter
Heater element for crankcase breather
3010A2006-2007: Injector, cylinder 1~6
315A2004-2005:
Reversing light switch
Mechatronic unit for dual clutch gearbox

2006-2007:
Four-wheel drive control unit
3120A2006-2007: Vacuum pump relay
3230A2006-2007:
Headlight washer system pump
Headlight washer system relay
3325ASliding sunroof adjustment control unit
3420AHeated rear left seat control unit
Heated rear right seat control unit
355AInterior monitoring sensor
Vehicle inclination sender
Alarm horn
3610ADriver seat lumbar support adjustment switch
Front passenger seat lumbar support adjustment switch
3720AClimatronic control unit
Driver seat heating control unit
Front passenger seat heating control unit
Front left seat heating
Front right seat heating
3830A2006-2007: Front passenger side window regulator motor
3920A2006-2007:
Multifunction switch
Automatic gearbox control unit
40Fresh air blower switch (for models without air conditioning system only)
4115ARear window wiper motor
4215AWindscreen and rear window washer pump
43--
4420ATrailer detector control unit
Supply for turn signal, brake light, left tail light (2004-2005)
4515ATrailer detector control unit
Supply for rear fog light, reversing light, right tail light (2004-2005)
465AHeater control unit
Climatronic control unit
Left washer jet heater element
Right washer jet heater element
475A2006-2007: Power output module for left headlight
4810AElectric socket (for driving school only)
495ASpecial vehicle fuse 6
Footwell light switch
Warning buzzer switch
Fuses on left under dash panel

Fuses on left under dash panel: Audi A3 (2004, 2005, 2006, 2007)

№AmpsFunction/component
A30A2005: Window regulator single fuse 2
B30A2004-2005: Window regulator single fuse
C30A-
D--

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Engine Compartment Fuse Box

Fuse Box Location

Push the two slides forward to unlatch the fuse cover.Location of the fuses in the engine compartment: Audi A3 (2004, 2005, 2006, 2007)

Fuse Box Diagram

Version 1 (Low)

Under-hood fuse box diagram (ver.1): Audi A3 (2004, 2005, 2006, 2007)

Assignment of the fuses in the engine compartment (low)
№AmpsFunction/component
F120AConvenience system central control unit
F25ASteering column electronics control unit
F35AOnboard supply control unit
F430AABS control unit
ABS hydraulic unit
F515AMechatronic unit for dual clutch gearbox
F65AControl unit in dash panel insert
F7--
F815ARadio
Navigation operating electronics control unit
F95ANavigation system with CD drive control unit
Navigation system tuner for TV
Satellite radio
Telephone transmitter and receiver unit
Aerial amplifier for mobile telephone
F105AMotronic control unit
Motronic current supply relay
Terminal 30 voltage supply relay
F1120AAuxiliary heater control unit
F125AData bus diagnostic interface
F1330AEngine control unit
Diesel direct injection system control unit
F1325AMotronic control unit
Engine control unit
F1420AIgnition coil 1 with output stage
Ignition coil 2 with output stage
Ignition coil 3 with output stage
Ignition coil 4 with output stage
F1515ALambda probe 1 heater after catalytic converter
Lambda probe 2 heater after catalytic converter
Lambda probe 3 heater after catalytic converter
F1510ALambda probe 1 heater after catalytic converter
F155AAutomatic glow period control unit
Fuel pump relay
F1630AABS control unit
ABS hydraulic pump
F1715ATreble tone horn
Bass tone horn
F1830AAmplifier
Amplifier with bass loudspeaker, on left in luggage compartment
F1930AWiper motor control unit
F2110A/15ALambda probe heater
Lambda probe heater 2
Lambda probe 1 heater after catalytic converter
F225ABrake pedal switch
Clutch position sender
F2315AFuel pressure regulating valve
F2310AExhaust gas recirculation valve
Charge pressure control solenoid valve
Exhaust gas recirculation valve 2
Exhaust gas recirculation cooler change-over valve
F235ASecondary air pump relay
F2410AMap-controlled engine cooling system thermostat
Activated charcoal filter solenoid valve 1
Variable intake manifold change-over valve
Camshaft control valve 1
Intake manifold flap motor
F2540AOnboard supply control unit (right side light, right main beam, right dipped beam, right turn signal, right fog light)
F2640AOnboard supply control unit (left side light, left main beam, left dipped beam, left turn signal, left fog light)
F2750AAutomatic glow period control unit
Glow plug 1~4
F2740ASecondary air pump motor
F2840ATerminal 15 voltage supply relay 2
Supply for the fuses (instrument panel): SC1, SC2, SC3, SC4, SC5, SC6, SC7, SC8, SC9, SC10, SC11, SC29, SC30, SC31, SC39, SC47, SC49
F2950ASupply for the fuses (instrument panel): SC18, SC20, SC32, SC33, SC34, SC35, SC36, SC37, SC44, SC45, SC48, and S131
F3040A/50AX-contact relief relay
Supply for the fuses (instrument panel): SC40, SC41, SC42, SC46
SA1150A/200AAlternator
SA280APower steering control unit
SA350ARadiator fan control unit
Radiatorfan thermal switch
Radiator fan
SA480ASupply for the fuses (instrument panel): SC12, SC13, SC14, SC15, SC16, SC17, SC19, SC22, SC23, SC24, SC25, SC26, SC27, SC28, SC38 (is dropped from November 2005
SA580ASupply for the fuses (instrument panel): SC12, SC13, SC14, SC15, SC16, SC17, SC19, SC22, SC23, SC24, SC25, SC26, SC27, SC28, SC38 (applicable from November 2005)
SA5100AAuxiliary air heater control unit (up to November 2005)
SA6100AAuxiliary air heater control unit (applicable from November 2005)
SA750A/80AOption for special vehicles
Version 2 (High)

Under-hood fuse box diagram (ver.2): Audi A3 (2004, 2005, 2006, 2007)

Assignment of the fuses in the engine compartment (high)
No.Nomina I valueFunction/component
F130AABS control unit
ABS hydraulic pump
F230AABS control unit
ABS hydraulic unit
F320AConvenience system central control unit
F45AOnboard supply control unit
F515ATreble tone horn
Bass tone horn
F67.5A/15AFuel pressure regulating valve
Fuel system pressurisation pump
F620A2004-2005: Output stage
F630A2004-2005: Ignition coil 1~6 with output stage
F75A2004-2005:
Brake light switch
Brake pedal switch
Clutch travel sender
F810A2004-2005:
Map-controlled engine cooling system thermostat
Radiator fan control unit
Exhaust gas recirculation valve
Activated charcoal filter solenoid valve 1
Variable intake manifold change-over valve
Camshaft control valve 1
Exhaust camshaft control valve 1
Intake manifold flap motor
F910A2004-2005:
Fuel pump relay
Continued coolant circulation relay
Automatic glow period control unit
NOx sensor control unit -
Continued coolant circulation pump
NOx sender heater

2006-2007:
Charge pressure control solenoid valve
Activated charcoal filter solenoid valve 1
Turbocharger air recirculation valve
F1010A2004-2005:
Secondary air pump relay
Exhaust gas recirculation valve
Charge pressure control solenoid valve
Secondary air inlet valve
Exhaust gas recirculation valve 2
Exhaust flap valve
Lambda probe 1 heater after catalytic converter
Lambda probe 2 heater after catalytic converter
Fuel system diagnostic pump

2006-2007:
Ar mass meter
Fuel system diagnostic pump
F1110A2006-2007:
Lambda probe heater
Lambda probe heater 2
F1125A2004-2005:
Motronic control unit
Simos control unit
F1130A2004-2005:
Diesel direct injection system control unit
F1210A/15A2004-2005:
NOx sensor control unit
Lambda probe heater
Lambda probe heater 2
NOx sender heater

2006-2007:
Lambda probe 1 heater after catalytic converter
Lambda probe 2 heater after catalytic converter
F1315A/20AMechatronic unit for dual clutch gearbox
F14--
F1510A2006-2007: Continued coolant circulation pump
F1540A2004-2005: Starter
F165ASteering column electronics control unit
F175AControl unit in dash panel insert
F1830AAmplifier
Amplifier with bass loudspeaker, on left in luggage compartment
F1915ARadio
Navigation operating electronics control unit
F205ANavigation system with CD drive control unit (2006-2007)
Navigation system tuner for TV (2006-2007)
Telephone transmitter and receiver unit
Aerial amplifier for mobile telephone
Satellite radio (2006-2007)
F2110A2004-2005:
Navigation system with CD drive control unit -
Navigation system tuner for TV
F22--
F235A2006-2007:
Motronic control unit
Motronic current supply relay
F245AData bus diagnostic interface
F25--
F2610A2004-2005:
Motronic control unit
Motronic current supply relay
F265A2004-2005: Terminal 30 voltage supply relay
F275A/10A2004-2005:
Heater element for crankcase breather (for models with heater element only)
F2820A2004-2005: Automatic gearbox control unit
F2825A2006-2007: Motronic control unit
F2910A/20A2004-2005:
Injector, cylinder 1~4 / Injector, cylinder 1~6
F295A2006-2007:
Continued coolant circulation relay
Secondary air pump relay
F3020AAuxiliary heater control unit
F3130AWiper motor control unit
F3210A2004-2005:
Injector, cylinder 1~4
Charge pressure control solenoid valve
Activated charcoal filter solenoid valve 1
Turbocharger air recirculation valve
F3315A2004-2005: Fuel system pressurisation pump
F337.5A/15A2004-2005: Fuel pressure regulating valve
F34--
F35--
F36--
F37--
F3810A2004-2005:
Left headlight range control motor
Right headlight range control motor

2006-2007:
Activated charcoal filter solenoid valve 1
Variable intake manifold change-over valve
Camshaft control valve 1
Exhaust camshaft control valve 1
Radiator fan control unit
F395A2004-2005:
Oil level and oil temperature sender

2006-2007:
Brake pedal switch
Clutch position sender
F4020A2004-2005:
Supply for the fuses (instrument panel): SC1, SC2, SC3, SC4, SC5, SC6, SC7, SC8, SC9, SC10, SC11, SC29, SC31 (for models with battery in engine compartment only)

2006-2007: Ignition coil 1~4 with output stage
F4110A2004-2005: Air mass meter
F425A/10A2004-2005:
Fuel pump relay
Air mass meter
F425A2006-2007: Engine component current supply relay
F4320A2004-2005: Vacuum pump relay (for petrol engines with automatic gearbox only)
F4330A2006-2007: Ignition coil 1~6 with output stage
F4410A2004-2005:
Air mass meter
Fuel system diagnostic pump
F4510A/15A2004-2005:
Lambda probe heater
Lambda probe 1 heater after catalytic converter
F4610A2004-2005:
Lambda probe heater 2
Lambda probe 1 heater after catalytic converter
Lambda probe 2 heater after catalytic converter
F4740AOnboard supply control unit
Left side light supply, left main beam, left dipped beam, left turn signal, left fog light
F4840AOnboard supply control unit
Right side light supply, right main beam, right dipped beam, right turn signal, right fog light
F4940ATerminal 15 voltage supply relay 2
Supply for the fuses (instrument panel): SC1, SC2, SC3, SC4, SC5, SC6, SC7, SC8, SC9, SC10, SC11, SC29, SC30, SC31, SC47, SC49
F50--
F5140ASecondary air pump relay
Secondary air pump motor
F5150AAutomatic glow period control unit
F5240A/50AX-contact relief relay
Supply for the fuses (instrument panel): SC40, SC41, SC42, SC46
F5350A2004-2005:
Supply for the fuses (instrument panel): SC32, SC33, SC34, SC35, SC36, SC37, SC44, SC45 (for models with battery in engine compartment only)
Supply for the fuses (instrument panel): SC32, SC33, SC34, SC35, SC36, SC37 (for models with battery in luggage compartment only)

2006-2007:
Supply for the fuses (instrument panel): SC18, SC20, SC32, SC33, SC34, SC35, SC36, SC37, SC44, SC45, SC48, and S131
F5450A2004-2005:
Radiator fan thermal switch
Radiator fan control unit
SA1150A/200AAlternator
SA280APower steering control unit
SA380ARadiator fan control unit
SA480AWindow regulator single fuse
Supply for the fuses: SC22, SC23, SC24, SC25, SC26, SC27 (for models with battery in luggage compartment only)
SA5100AAuxiliary air heater control unit
SA650ASupply for the fuses: SC12, SC13, SC14, SC15, SC16, SC17, SC44, SC45 (for models with battery in luggage compartment only)
SA680AWindow regulator single fuse
Supply for the fuses: SC12, SC13, SC14, SC15, SC16, SC17, SC22, SC23, SC24, SC25, SC26, SC27 (for models with battery in engine compartment only)
SA750A/80AOption for special vehicles

Main Fuse Box

It is in luggage compartment (rear right).

Main Fuse Box: Audi A3 (2004, 2005, 2006, 2007)

№AmpsFunction/component
15AOnboard supply control unit
2125ASupply for main fuse box, electronics box high, relay and fuse carrier, electronics box high
380ASupply for main fuse box, electronics box high, relay and fuse carrier, electronics box high
430A2005-2007: Amplifier for models with Bose sound system only
2005-2007: Supply for the fuses in the instrument panel: #12, 13, 14, 15, 16, 17, 19
2006-2007: Supply for the fuses in the instrument panel: #12, 13, 14, 15, 16, 17, 47
Learn more:

How to check the fuses?

How to replace a blown fuse?

Why do car fuses blow?

Types of automotive fuses

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