2010-2015 Audi A1 and Audi S1 Fuse Box Diagram

Overview of fuses

Overview also valid for 5-door models!
  1. Fuse holder D -SD-
  2. Fuse holder A -SA-
  3. Fuse holder C -SC-
  4. Relay/fuse holder F -SF-
  5. Fuse holder B -SB-, Fuse holder H -SH-
  6. Fuse holder B -SB-

Passenger Compartment Fuse Box No.1 (SC)

      For models with right-hand drive

      For models with left-hand drive



Fuses Specifications
No. A Description
Black
1 30 Digital sound package control unit 
Voltage stabiliser 
Radio 
2 40 Heater control unit
X-contact relief relay
Fresh air blower control unit 
Fresh air blower 
3 20 Cigarette lighter
12 V socket 
4 15 Trailer detector control unit 
5 5 Data bus diagnostic interface 
6 30 Front passenger door control unit 
Rear right door control unit 
7 30 Driver door control unit 
Rear left door control unit 
8 30 Heated rear window relay
Heated rear window 
9 25 ABS control unit
10 20 Onboard supply control unit 
11 15 High tone horn
Low tone horn 
Horn relay
12 30 Onboard supply control unit
Brown
1 5 Alarm horn 
Anti-theft alarm sensor 
2 5 1.4 TFSI (140 hp), 1.6 TDI: 
   Terminal 30 voltage supply relay (TDI)
   Motronic current supply relay (TFSI)
   Engine control unit
7.5 1.2 TFSI, 1.4 TFSI (122 hp, 185 hp), 2.0 TFSI, 2.0 TDI:
   Terminal 30 voltage supply relay (TDI) 
   Motronic current supply relay (TFSI)
   Engine control unit
3 5 Onboard supply control unit
4 5 ABS control unit 
Voltage stabiliser 2
15 2.0 TFSI (January 2014→):
   ABS control unit 
   Voltage stabiliser 2 
   All-wheel drive control unit
5 - Vacant
6 5 Light/rain sensor 
Aerial amplifier for mobile telephone 
Telephone bracket
Front roof module 
7 15 TFSI: Fuel pump control unit
20 TDI: Fuel pump relay
8 10 TFSI (→October 2014): Auxiliary coolant pump relay 
9 5 Steering column electronics control unit 
10 5 Light switch
11 10 Climatronic control unit
Air conditioning system control unit 
Front passenger door control unit (→April 2012)
Rear right door control unit (→April 2012)
16-pin connector, diagnosis connection
12 10 →April 2012:
   Driver door control unit
   Rear left door control unit
13 10 Onboard supply control unit 
14 20 Models without trailer socket only:
   Relay for power sockets
15 30 Onboard supply control unit
16 20 →October 2014:
   Wiper motor switch-over relay
20 1.8 TFSI (November 2014→) & 2.0 TFSI (January 2014→):
   Engine component current supply relay 
   Ignition coil 1 with output stage 
   Ignition coil 2 with output stage 
   Ignition coil 3 with output stage 
   Ignition coil 4 with output stage
Red
1 5 1.6 TDI, 2.0 TDI:
   Automatic glow period control unit 
20 1.4 TFSI (122 hp, 130 hp, 185 hp):
   Vacuum pump for brakes 
2 10 →October 2011:
   Brake light switch
   Brake pedal switch
   Auxiliary coolant pump relay
   Lambda probe heater -
   Lambda probe 1 heater after catalytic converter
5 November 2011→:
   Supply Fuse 9 on fuse holder (→October 2014)
   Supply Fuse 10 on fuse holder (→October 2014)
   ABS control unit
   Auxiliary coolant pump relay
3 5 1.6 TDI, 2.0 TDI, 2.0 TFSI (→October 2014):
   Air mass meter     
   Fuel pump relay
   Low heat output relay
   High heat output relay 
   Engine component current supply relay 
   Fuel pressure regulating valve 
   Coolant circulation pump
7.5 1.4 TFSI (140 hp (→October 2014)):
   Air mass meter
   Fuel pump relay
   Low heat output relay
   High heat output relay 
   Engine component current supply relay 
   Fuel pressure regulating valve 
   Coolant circulation pump
15 1.2 TFSI, 1.4 TFSI (122 hp, 185 hp) (→October 2014):
   Air mass meter
   Fuel pump relay
   Low heat output relay
   High heat output relay 
   Engine component current supply relay 
   Fuel pressure regulating valve 
   Coolant circulation pump
4 15 1.2 TFSI, 1.4 TFSI:
   Engine control unit
   Clutch position sender (→October 2011)
   Brake light switch (→October 2011)
25 2.0 TFSI:
   Engine control unit
30 1.6 TDI, 2.0 TDI:
   Engine control unit
   Clutch position sender (→October 2011)
   Brake light switch (→October 2011)
5 20 2.0 TFSI (→October 2014):
   Ignition coil 1 with output stage
   Ignition coil 2 with output stage
   Ignition transformer
   Fuel pressure regulating valve
   Fuel metering valve
   Ignition coil 3 with output stage
   Ignition coil 4 with output stage
15 1.6 TDI, 2.0 TDI (→October 2014):
   Ignition coil 1 with output stage
   Ignition coil 2 with output stage
   Ignition transformer
   Fuel pressure regulating valve
   Fuel metering valve
   Ignition coil 3 with output stage
   Ignition coil 4 with output stage
20 1.2 TFSI, 1.4 TFSI (122 hp, 185 hp):
   Ignition coil 1 with output stage
   Ignition coil 2 with output stage
   Ignition transformer
   Fuel pressure regulating valve
   Fuel metering valve
   Ignition coil 3 with output stage
   Ignition coil 4 with output stage
30 1.4 TFSI (140 hp) (→October 2014):
   Ignition coil 1 with output stage
   Ignition coil 2 with output stage
   Ignition transformer
   Fuel pressure regulating valve
   Fuel metering valve
   Ignition coil 3 with output stage
   Ignition coil 4 with output stage
6 10 except 1.4 TFSI 140 hp (→October 2014):
   Radiator fan control unit
   Heater element relay -
   Charge pressure control solenoid valve
   Activated charcoal filter solenoid valve 1
   Exhaust camshaft control valve 1
   Recirculation valve for turbocharger
   Intake manifold flap valve
   Exhaust camshaft control valve 1
   Switchover valve for exhaust recirculation cooler
   Oil pressure regulation valve
   Intake cam adjuster for cylinder 2 
   Exhaust cam adjuster for cylinder 2
   Intake cam adjuster for cylinder 3 
   Exhaust cam adjuster for cylinder 3 
   Pump for exhaust recirculation cooler 
20 1.4 TFSI (140 hp (→October 2014)):
   Radiator fan control unit
   Heater element relay -
   Charge pressure control solenoid valve
   Activated charcoal filter solenoid valve 1
   Exhaust camshaft control valve 1
   Recirculation valve for turbocharger
   Intake manifold flap valve
   Exhaust camshaft control valve 1
   Switchover valve for exhaust recirculation cooler
   Oil pressure regulation valve
   Intake cam adjuster for cylinder 2 
   Exhaust cam adjuster for cylinder 2
   Intake cam adjuster for cylinder 3 
   Exhaust cam adjuster for cylinder 3 
   Pump for exhaust recirculation cooler 
7 5 CD changer
8 5 Internet access control unit 
Chip card reader control unit 
Radio
TV tuner 
9 5 Control unit in dash panel insert 
10 5 Relay for automatic anti-dazzle interior mirror 
Automatic anti-dazzle interior mirror 
11 7.5 with MMI (Multi Media Interface):
   Radio
15 without MMI (Multi Media Interface):
   Control unit for information electronics 1 
12 5 Display unit for front information display and operating unit control unit

Passenger Compartment Fuse Box No.2 (SD)

      For models with right-hand drive

      For models with left-hand drive



Fuses Specifications
No. A Description
Black
1 7.5 ESL control unit
2 20 Trailer detector control unit
3 20 Trailer detector control unit 
4 30 →October 2014: Mechatronic unit for dual clutch gearbox
7.5 January 2014→: Electronically controlled damping control unit
5 30 Headlight washer system relay 
Headlight washer system pump
6 5 Interface control unit for vehicle location system 
7 7.5 Entry and start authorisation control unit 
8 15 →October 2014: Mechatronic unit for dual clutch gearbox 
9 20 Sliding sunroof motor 
10 7.5 Selector lever sensors control unit
11 15 2.0 TFSI (→October 2014):
   Engine component current supply relay
   Fuel pressure regulating valve
12 -  -
Brown
1 5 Reversing light switch
Selector lever sensors control unit 
Mechatronic unit for dual clutch gearbox 
2 10 High-pressure sender 
Oil level and oil temperature sender 
Air conditioning system control unit 
Relay for power sockets 
Automatic anti-dazzle interior mirror 
16-pin connector, diagnosis connection
3 5 Data bus diagnostic interface 
4 5 Heater control unit 
Control unit for structure-borne sound 
5 7.5 Light switch
Starter relay 1 
Voltage stabiliser
Starter relay 2 
Relay for automatic anti-dazzle interior mirror 
Front left headlight
Front right headlight 
6 5 Light switch
7 5 →October 2014:
   ABS control unit
   Voltage stabiliser 2
5 January 2014→: Electronically controlled damping control unit
8 5 Heated driver seat regulator 
Heated front passenger seat regulator 
Hazard warning lights button
Heated rear window button 
TCS and ESP button 
Parking aid button
Tyre pressure monitor display button 
Start/Stop operation button 
Trailer detector control unit 
Left washer jet heater element 
Right washer jet heater element
9 5 Power steering control unit 
10 5 TFSI:
   Air mass meter 
   Fuel pump control unit 
   Crankcase breather heater element 
7.5 TDI:
   Air mass meter 
   Fuel pump control unit 
   Crankcase breather heater element 
11 5 Airbag control unit 
Front passenger airbag deactivated warning lamp 
12 5 Parking aid control unit
13 5 Control unit for headlight range control 
14 30 Seat heating control unit 
15 15 Rear window wiper motor 
16 5 Engine control unit 
Air mass meter
Red
1 -  -
2  -  -
3 10 All-wheel drive control unit, gradual phase-out
4 -  -
5 -  -
6 -  -
7 -  -
8 -  -
9 -  -
10 5 Special vehicle control unit
10 Special vehicle control unit
11 -  -
12 -  -

Passenger Compartment Relay Box No.3 (SF)

      For models with right-hand drive

      For models with left-hand drive



Fuses Specifications
No. A Description
1 40 Voltage stabiliser 
2 50 Supply fuse carrier 1 -ST1- in fuse holder D -SD-
3 40 Terminal 15 voltage supply relay
4 40 ABS control unit 
5 5 Voltage stabiliser 2, gradual phase-out
6 5 Onboard supply control unit
Voltage stabiliser 
Voltage stabiliser 2, gradual phase-out 
Engine control unit 
16 10 November 2011 → October 2014:
   Brake light switch
   Clutch position sender
17 5 November 2011 → October 2014:
   Lambda probe heater
   Lambda probe 1 heater after catalytic converter

High Fuse Block No.1 (SB)

      For models with battery in engine compartment

      For models with battery in luggage compartment

Fuses Specifications
No. A Description
1 175 Alternator 
2 40 Low heat output relay 
Heater element for auxiliary air heater 
3 110 for models with battery in engine compartment only:
   Onboard supply 
   Engine component supply
4 80 Power steering control unit
5 50 →2011:
   Radiator fan thermal switch 
   Radiator fan control unit
40 2011→:
   Radiator fan thermal switch 
   Radiator fan control unit
6 50 Automatic glow period control unit 
7 60 High heat output relay 
Battery monitor control unit (for models with battery in engine compartment only) 
Auxiliary heater element 

High Fuse Block No.2 (for models with battery in luggage compartment only)

Fuses Specifications
No. A Description
1 -  -
2 110 Onboard supply
Engine component supply
3 -  -

Engine Compartment Fuse Box (SB / SH)



For S1 version models only, from January 2014 
For models from November 2014 only.

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Fuses Specifications
No. A Description
Fusible Link
1 110 →October 2014 (for models with battery in engine compartment only):
Onboard supply 
Engine component supply
5 November 2014→:
   Radiator fan control unit 
   Radiator fan
2 250 Alternator 
Voltage regulator
3 - Battery +
4 80 Power steering control unit 
5 50 TDI (November 2014→):
   Automatic glow period control unit
   Glow plug 1 
   Glow plug 2
   Glow plug 3
   Glow plug 4
6 50 →October 2014:
   Radiator fan control unit
   Radiator fan 
-
125 for models with battery in engine compartment only (November 2014→)
   Onboard supply
   Engine component supply
Fuses
No. A Description
1 40 Heater element for auxiliary air heater, stage 1
2 30 Radiator fan control unit 
Radiator fan 
3 -  -
4 40 Heater element for auxiliary air heater, stage 2
5 40 Heater element for auxiliary air heater, stage 3
6 30 Mechatronic unit for dual clutch gearbox
7 7.5 Engine control unit
8 20 Wiper motor switch-over relay 1 
Wiper motor switch-over relay 2
9 5 Battery monitor control unit 
10 10 Suppression filter
11 -  -
12 10 1.0 TFSI, 1.4 TFSI:
   Lambda probe heater
   Lambda probe 1 heater after catalytic converter 
15 1.4 TDI, 1.6 TDI, 1.8 TFSI, 2.0 TFSI::
   Lambda probe heater
   Lambda probe 1 heater after catalytic converter 
13 5 Brake light switch
Clutch position sender-
14 5 1.8 TFSI, 2.0 TFSI:
   Thermal switch for air conditioning system shut-off
   Fuel metering valve
   Oil pressure regulation valve
   Cylinder head coolant valve 
   Coolant circulation pump 
   Circulation pump 
   Charge air cooling pump
   Auxiliary heating pump 
10 1.0 TFSI, 1.4 TFSI, 1.4 TDI, 1.6 TDI:
   Thermal switch for air conditioning system shut-off
   Fuel metering valve
   Oil pressure regulation valve
   Cylinder head coolant valve 
   Coolant circulation pump 
   Circulation pump 
   Charge air cooling pump
   Auxiliary heating pump 
15 5 Onboard supply control unit, T52c/34 
Engine control unit, T91/67;T94/... 
Voltage stabiliser, T12aa/4
16 30 Starter motor
17 15 1.0 TFSI, 1.4 TFSI, 1.8 TFSI, 2.0 TFSI: Engine control unit 
30 1.4 TDI, 1.6 TDI: Engine control unit 
18 5 1.4 TDI, 1.6 TDI:
   Oil level and oil temperature sender
   Fuel pump relay 
   Radiator fan control unit 
   Low heat output relay
   High heat output relay 
   Charge pressure control solenoid valve 
   Recirculation valve for turbocharger
   Intake manifold flap valve 
   Oil pressure regulation valve 
   Cooling oil valve 
10 1.0 TFSI, 1.4 TFSI, 1.8 TFSI, 2.0 TFSI:
   Oil level and oil temperature sender
   Fuel pump relay 
   Radiator fan control unit 
   Low heat output relay
   High heat output relay 
   Charge pressure control solenoid valve 
   Recirculation valve for turbocharger
   Intake manifold flap valve 
   Oil pressure regulation valve 
   Cooling oil valve 
19 7.5 1.4 TDI:
   Engine component current supply relay 
   Fuel pressure regulating valve 
   Fuel metering valve 
   Injector 2 for cylinder 1 
   Injector 2 for cylinder 2
   Injector 2 for cylinder 3
   Injector 2 for cylinder 4 
   Actuator 1 for camshaft adjustment
   Actuator 2 for camshaft adjustment
   Actuator 3 for camshaft adjustment
   Actuator 4 for camshaft adjustment
   Actuator 5 for camshaft adjustment 
   Actuator 6 for camshaft adjustment 
   Actuator 7 for camshaft adjustment
   Actuator 8 for camshaft adjustment 
   Vacuum pump for brakes
10 1.6 TDI, 1.8 TFSI, 2.0 TFSI:
   Engine component current supply relay 
   Fuel pressure regulating valve 
   Fuel metering valve 
   Injector 2 for cylinder 1 
   Injector 2 for cylinder 2
   Injector 2 for cylinder 3
   Injector 2 for cylinder 4 
   Actuator 1 for camshaft adjustment
   Actuator 2 for camshaft adjustment
   Actuator 3 for camshaft adjustment
   Actuator 4 for camshaft adjustment
   Actuator 5 for camshaft adjustment 
   Actuator 6 for camshaft adjustment 
   Actuator 7 for camshaft adjustment
   Actuator 8 for camshaft adjustment 
   Vacuum pump for brakes
20 1.0 TFSI, 1.4 TFSI:
   Engine component current supply relay 
   Fuel pressure regulating valve 
   Fuel metering valve 
   Injector 2 for cylinder 1 
   Injector 2 for cylinder 2
   Injector 2 for cylinder 3
   Injector 2 for cylinder 4 
   Actuator 1 for camshaft adjustment
   Actuator 2 for camshaft adjustment
   Actuator 3 for camshaft adjustment
   Actuator 4 for camshaft adjustment
   Actuator 5 for camshaft adjustment 
   Actuator 6 for camshaft adjustment 
   Actuator 7 for camshaft adjustment
   Actuator 8 for camshaft adjustment 
   Vacuum pump for brakes
20 5 1.4 TDI, 1.6 TDI:
   Automatic glow period control unit
   Exhaust flap control unit 
   Crankcase breather heater element
   Activated charcoal filter solenoid valve 1-
   Camshaft control valve 1
   Exhaust camshaft control valve 1
   Continued coolant circulation pump
   Sender 1 for secondary air pressure
   Sender 2 for secondary air pressure
10 1.8 TFSI, 2.0 TFSI:
   Automatic glow period control unit
   Exhaust flap control unit 
   Crankcase breather heater element
   Activated charcoal filter solenoid valve 1-
   Camshaft control valve 1
   Exhaust camshaft control valve 1
   Continued coolant circulation pump
   Sender 1 for secondary air pressure
   Sender 2 for secondary air pressure
20 1.0 TFSI, 1.4 TFSI:
   Automatic glow period control unit
   Exhaust flap control unit 
   Crankcase breather heater element
   Activated charcoal filter solenoid valve 1-
   Camshaft control valve 1
   Exhaust camshaft control valve 1
   Continued coolant circulation pump
   Sender 1 for secondary air pressure
   Sender 2 for secondary air pressure