Audi A3 (8L; 1996 – 2003) – fuse box diagram

Audi A3 (8L; 1996 – 2003) – fuse box diagram

Year of production: 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003

Fitting locations

Audi A3 8L – fuse box diagram – location
Audi A3 8L – fuse box diagram – location

1 –  Relay carrier (3-pin) / fuse carrier
2 –  Micro-central electrics
2 –  Relay carrier (13-pin)
3 –  Fuse holder
4 –  Main fuse box / battery

Fuse box driver side dash panel

Audi A3 8L – fuse box diagram – driver side dash panel
Audi A3 8L – fuse box diagram – driver side dash panel

A
Function/component
1 10 S1 – Fuse in relay plate fuse holder
Z20 – Left washer jet heater element 75x
Z21 – Right washer jet heater element
Z4 – Driver side heated exterior mirror
Z5 – Front passenger side heated exterior mirror
2 10 M5 – Front left turn signal bulb
M7 – Front right turn signal bulb
M18 – Left side mounted turn signal bulb
M19 – Right side repeater turn signal bulb
3 5 Illuminations:
W6 – Glove compartment light
E87 – Operating and display unit for Climatronic air conditioning system
4 5 X-number plate light
5 7.5 E87 – Operating and display unit for Climatronic air conditioning system
E45 – Cruise control system switch
E94 – Heated driver seat regulator
E95 – Heated front passenger seat regulator
E159 – Fresh air and air recirculation flap switch
E221 – Operating unit in steering wheel1)
F269 – Temperature flap position switch
G65 – High pressure sender
J293 – Radiator fan control unit
J401 – Navigation system with CD drive control unit
J402 – Navigation operating electronics control unit
J446 – Parking aid control unit
J453 – Multifunction steering wheel control unit
R – Radio
Y7 – Automatic anti-dazzle interior mirror
6 5 E150 – Driver side interior locking switch
V94 – Central locking motor with control unit for interior lights switch-off delay and anti-theft alarm system
7 10 F189 – Tiptronic switch
G22 – Speedometer sender
G266 – Oil level and oil temperature sender
J226 – Starter inhibitor and reversing light relay
M16 – Left reversing light bulb
M17 – Right reversing light bulb
8 5 J526 – Telephone and telematics control unit
J412 – Mobile telephone operating electronics control unit
R36 – Telephone transmitter and receiver unit
9 5 E132 – Traction control system switch
G85 – Steering angle sender
J104 – ABS control unit
10 15 Engine management petrol engine:
J220 – Motronic control unit2)
J271 – Motronic current supply relay2)
J363 – Current supply relay for Simos control unit2)
10 5 Engine management diesel engine:
J248 – Diesel direct injection system control unit2)
10 10 J285 – Control unit in dash panel insert3)
J402 – Navigation operating electronics control unit3)
R – Radio3)
V94 – Central locking motor with control unit for interior lights switch-off delay and anti-theft alarm system3)
11 5 G266 – Oil level and oil temperature sender
J17 – Fuel pump relay
J285 – Control unit in dash panel insert
K2 – Alternator warning lamp
K14 – Handbrake warning lamp
K29 – Glow period warning lamp
K132 – Electronic power control fault lamp
K149 – Engine electronics warning lamp
N110 – Selector lever lock solenoid
V48 – Left headlight range control motor
V49 – Right headlight range control motor
12 7.5 J401 – Navigation system with CD drive control unit
J412 – Mobile telephone operating electronics control unit
J526 – Telephone and telematics control unit
R36 – Telephone transmitter and receiver unit
R86 – Aerial amplifier for mobile telephone
T16 – 16-pin connector, black, shelf centre console (diagnostic connector)
13 10 M9 – Left brake light bulb
M10 – Right brake light bulb
M25 – High-level brake light bulb
14 10 J452 – Door warning lamps control unit
V94 – Central locking motor with control unit for interior lights switch-off delay and anti-theft alarm system
W – Front interior light
W14 – Front passenger side illuminated vanity mirror
W20 – Driver side illuminated vanity mirror
15 5 E87 – Operating and display unit for Climatronic air conditioning system
G85 – Steering angle sender
J217 – Automatic gearbox control unit
J285 – Control unit in dash panel insert
16 10 J293-Radiator fan control unit
17 7.5 Z22 – Left lock cylinder heater element
Z23 – Right lock cylinder heater element
18 10 L2 – Right headlight twin filament bulb (main beam)
K1 – Main beam warning lamp
19 10 L1 – Left headlight twin filament bulb (main beam)
20 15 E102 – Headlight range control regulator
J124 – Rear bulb monitoring device
J344 – Right gas discharge light control unit
L2 – Right headlight twin filament bulb (dipped beam)
V48 – Left headlight range control motor
V49 – Right headlight range control motor
21 15 J124 – Rear bulb monitoring device
J343 – Left gas discharge light control unit
L1 – Left headlight twin filament bulb (dipped beam)
22 5 J285 – Control unit in dash panel insert
M2 – Right tail light bulb
M3 – Right side light bulb
23 5 J285 – Control unit in dash panel insert
M1 – Left side light bulb
M4 – Left tail light bulb
24 20 J31 – Automatic intermittent wash and wipe relay
25 25 E87 – Operating and display unit for air conditioning system/Climatronic
V2 – Fresh air blower
26 25 Z1 -Heated rear window
27 15 J30-Rear window wiper and washer relay
V12 -Rear window wiper motor
28 15
204)
J17-Fuel pump relay
29 15 Engine management petrol engine:
J220 – Motronic control unit
J271 – Motronic current supply relay
J361 – Simos control unit
J363 – Current supply relay for Simos control unit
N122 – Output stage
29 5 Engine management diesel engine:
J248 – Diesel direct injection system control unit 5)
29 10 Engine management diesel engine:
J248 – Diesel direct injection system control unit 6)
30 20 J245-Sliding sunroof adjustment control unit
31 20 J217 – Automatic gearbox control unit
J539 – Brake servo control unit
31 5 J492-Four-wheel drive control unit
32 10 Engine management petrol engine:
N30-Injector, cylinder 1
N31-Injector, cylinder 2
N32-Injector, cylinder 3
N33-Injector, cylinder 4
32 30 Engine management diesel engine:
J248-Diesel direct injection system control unit
33 20 J31 – Automatic intermittent wash and wipe relay
34 10 Engine management petrol engine:
N75 – Charge pressure control solenoid valve
N79 – Heater element for crankcase breather
N112 – Secondary air inlet valve
N156 – Variable intake manifold change-over valve
N249 – Turbocharger air recirculation valve
N205 – Inlet camshaft control valve 1
34 10 Engine management diesel engine:
G70 – Air mass meter
G80 – Needle lift sender
N18 – Exhaust gas recirculation valve
N75 – Charge pressure control solenoid valve
N239 – Variable intake manifold flap change-over valve
35 30 U10 -Trailer socket
36 15 L46 – Rear left fog light bulb
L22 – Left fog light bulb
L23 – Right fog light bulb
37 10 J285 – Control unit in dash panel insert2)
J402 – Navigation operating electronics control unit2)
R – Radio2)
V94 – Central locking motor with control unit for interior lights switch-off delay and anti-theft alarm system²)
37 20 Engine management petrol engine:
J220 – Motronic control unit3)
J271 – Motronic current supply relay3)
J363 – Current supply relay for Simos control unit3)
37 5 Engine management diesel engine:
J248 – Diesel direct injection system control unit3)
38 10 E150 – Driver side interior locking switch
F248 – Release button for rear lid lock cylinder
J347 – Ultrasonic sensor control unit
V94 – Central locking motor with control unit for interior lights switch-off delay and anti-theft alarm system
39 15 Hazard warning lights system :
M5 – Front left turn signal bulb
M7 – Front right turn signal bulb
M6 – Rear left turn signal bulb
M8 – Rear right turn signal bulb
M18 – Left side mounted turn signal bulb
M19 – Right side mounted turn signal bulb
K65 – Left turn signal warning lamp
K94 – Right turn signal warning lamp
40 20 H2 -Treble tone horn
H7 -Bass tone horn
41 15 U1-Cigarette lighter
42 15 J415 – Navigation system tuner for TV
J515 – Aerial selection control unit
R – Radio
R12 – Amplifier
R44 – Amplifier with bass loudspeaker, on left in luggage compartment
R94 – Navigation system interface
43 10 Engine management petrol engine:
G70 – Air mass meter
N80 – Active charcoal filter system solenoid valve 1
Z19 – Lambda probe heater
Z29 – Lambda probe 1 heater after catalytic converter
43 10 Engine management diesel engine:
F36 – Clutch pedal switch
F47 – Brake pedal switch
N79 – Heater element for crankcase breather
J359 – Low heat output relay
J360 – High heat output relay
44 15 Z6 – Heated cushion for driver seat
Z7 – Heated backrest for driver seat
1) is dropped from July 2002
2) is dropped from November 2001
3) applicable from November 2001
4) for models with S3 equipment only
5) is dropped from model year 2002
6) applicable from model year 2002

Relay carrier (3-pin) / fuse carrier

Audi A3 8L – fuse box diagram – relay carrier (3-pin)/fuse carrier
Audi A3 8L – fuse box diagram – relay carrier (3-pin)/fuse carrier
Relays
1 Secondary air pump relay (J299) (petrol engine)
High heat output relay (J360) (diesel engine)
2 Motronic current supply relay (J271) (petrol engine)
Current supply relay for Simos control unit (J363) (petrol engine)
Low heat output relay (J359) (diesel engine)

A
Function/component
31) 20 Brake vacuum pump fuse S283 (petrol engine)
42) 40 Special vehicle fuse 20 S310 (petrol engine)
1) is dropped from model year 2003
2) is dropped from model year 200

Micro-central electrics

Audi A3 8L – fuse box diagram – micro-central electronics
Audi A3 8L – fuse box diagram – micro-central electronics
Relays
1 J4 – Dual tone horn relay
2 J59 – X-contact relief relay
3 Vacant
4 J17 – Fuel pump relay1)
J52 – Glow plug relay2)
5 J31 – Automatic intermittent wash and wipe relay
6 J31 – Automatic intermittent wash and wipe relay
Fuses
A S44 – Driver seat adjustment thermal fuse 1
S45 – Driver seat adjustment thermal fuse 2
B S283 – Brake vacuum pump fuse3)
C S37 – Window regulator single fuse
1) for models with petrol engines only
2) for models with diesel engines only
3) applicable from model year 2003

Relay carrier (13-pin)

Audi A3 8L – fuse box diagram -relay carrier (13-pin)
Audi A3 8L – fuse box diagram -relay carrier (13-pin)
Relays
1 Vacant
2 J124 – Rear bulb monitoring device
3 J124 – Rear bulb monitoring device
4 J552 – Open window regulator relay, front passenger side
5 J351 – Folding exterior mirror control unit
6 J351 – Folding exterior mirror control unit
7 J508 – Brake light suppression relay
8 J9 – Heated rear window relay
9 J17 – Fuel pump relay1)
10 J17 – Fuel pump relay2)
11 J226 – Starter inhibitor and reversing light relay
12 J322 – Diesel direct injection system relay
13 J397 – Radiator fan run-on relay
J155 – Coolant pump control unit
Fuses
14 Vacant
15 Vacant
16 Vacant
17 S43 – Window regulator thermal fuse
18 S326 – Multifunction steering wheel fuse3)
1) for models with four-wheel only
2) for models with front-wheel drive only
3) applicable from July 2002

Main fuse box

Audi A3 8L – fuse box diagram – main fuse box
Audi A3 8L – fuse box diagram – main fuse box

A
Function/component
S131 50 Heater glow plugs (diesel engine)
S132 50 Engine management
S133 30 Radiator fan
S134 110 Interior
S138 150 Alternator
S162 30 Fuse 1 (30) in fuse holder on battery

WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.

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