Audi A1 (2010 – 2018) – fuse box diagram

Audi A1 – fuse box diagram

Year of production: 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018

Location

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-

Fuse holder A -SA-

At battery positive terminal (for models with battery in luggage compartment only).

No.	A	Function/component
1	–	Vacant
2	110	Onboard supply Engine component supply
3	–	Vacant

Fuse holder B -SB-

For models with battery in engine compartment

For models with battery in luggage compartment

No.	A	Function/component
1	175	Alternator -C-
2	40	Low heat output relay -J359- Heater element for auxiliary air heater -Z35-
3	110 1)	Onboard supply1) Engine component supply1)
4	80	Power steering control unit -J500-
5	50 2) 40 3)	Radiator fan thermal switch -F18- Radiator fan control unit -J293-
6	50	Automatic glow period control unit -J179-
7	60	High heat output relay -J360- Battery monitor control unit -J3671) Auxiliary heater element -Z35-
1) for models with battery in engine compartment only 2) no longer fitted, phased out (model year 2011) 3) phased-in modification (model year 2011)

Fuses in electronics box in fuse holder B -SB-/ Fuse holder H -SH-

In electronics box, in left engine compartment.
For S1 version models only, from January 2014
For models from November 2014 only.

No.	A	Function/component
1	110 4)5 5)	Onboard supply4) Engine component supply4) Radiator fan control unit -J293-5) Radiator fan -V7-5)
2	250	Alternator -C- Voltage regulator -C1-
3	–	Battery +
4	80	Power steering control unit -J500-
5	50 6)	Automatic glow period control unit -J179-6) Glow plug 1 -Q10- Glow plug 2 -Q11- Glow plug 3 -Q12- Glow plug 4 -Q13-
6	50 7)– 8) – 9)	Radiator fan control unit -J293-7) Radiator fan -V7-7) –
7	125	Onboard supply8) Engine component supply8)
4) for models with battery in engine compartment only, up to October 2014 5) for models from November 2014 only 6) for models with diesel engine only, from November 2014 7) for models up to October 2014 8) for models with battery in engine compartment only, from November 2014 9) Fuse 5 on fuse holder B -SB5- bridged, (see note)

Fuses in electronics box in fuse holder H -SH-

No.	A	Function/component
1	40	Heater element for auxiliary air heater -Z35-, stage 1
2	30	Radiator fan control unit -J293- Radiator fan -V7-
3	–	Vacant
4	40	Heater element for auxiliary air heater -Z35-, stage 2
5	40	Heater element for auxiliary air heater -Z35-, stage 3
6	30	Mechatronic unit for dual clutch gearbox -J743-
7	7.5	Engine control unit -J623-
8	20	Wiper motor switch-over relay 1 -J368- Wiper motor switch-over relay 2 -J369-
9	5	Battery monitor control unit -J367-
10	10	Suppression filter -C24-
11	–	Vacant
12	10 12) 15 13)10)11)	Lambda probe heater -Z19- Lambda probe 1 heater after catalytic converter -Z29-
13	5	Brake light switch -F- Clutch position sender -G476-
14	5 13) 10 10)11)12)	Thermal switch for air conditioning system shut-off -F163- Fuel metering valve -N290- Oil pressure regulation valve -N428- Cylinder head coolant valve -N489- Coolant circulation pump -V50- Circulation pump -V55- Charge air cooling pump -V188- Auxiliary heating pump -V488-
15	5	Onboard supply control unit -J519-, T52c/34 Engine control unit -J623-, T91/67;T94/… Voltage stabiliser -J532-, T12aa/4
16	30	Starter motor -B-
17	15 12)13) 30 10)11)	Engine control unit -J623-
18	5 10)11) 10 12)13)	Oil level and oil temperature sender -G266- Fuel pump relay -J17- Radiator fan control unit -J293- Low heat output relay -J359- High heat output relay -J360- Charge pressure control solenoid valve -N75- Recirculation valve for turbocharger -N249- Intake manifold flap valve -N316- Oil pressure regulation valve -N428- Cooling oil valve -N471-
19	7.5 10) 10 11)13) 20 12)	Engine component current supply relay -J757- Fuel pressure regulating valve -N276- Fuel metering valve -N290- Injector 2 for cylinder 1 -N532- Injector 2 for cylinder 2 -N533- Injector 2 for cylinder 3 -N534- Injector 2 for cylinder 4 -N535- Actuator 1 for camshaft adjustment -F366- Actuator 2 for camshaft adjustment -F367- Actuator 3 for camshaft adjustment -F368- Actuator 4 for camshaft adjustment -F369- Actuator 5 for camshaft adjustment -F370- Actuator 6 for camshaft adjustment -F371- Actuator 7 for camshaft adjustment -F372- Actuator 8 for camshaft adjustment -F373- Vacuum pump for brakes -V192-
20	5 10)11) 10 13) 20 12)	Automatic glow period control unit -J179- Exhaust flap control unit -J883- Crankcase breather heater element -N79- Activated charcoal filter solenoid valve 1 -N80- Camshaft control valve 1 -N205- Exhaust camshaft control valve 1 -N318- Continued coolant circulation pump -V51- Sender 1 for secondary air pressure -G609- Sender 2 for secondary air pressure -G610-
10) for models with 1.4 l diesel engine only 11) for models with 1.6 l diesel engine only 12) for models with 1.0 l/1.4 l petrol engine only 13) for models with 1.8 l/2.0 l petrol engine only

Fuse holder C -SC-

No.	A	Function/component
Black
1	30	Digital sound package control unit -J525- Voltage stabiliser -J532- Radio -R-
2	40	Heater control unit -J65- X-contact relief relay -J59- Fresh air blower control unit -J126- Fresh air blower -V2-
3	20	Cigarette lighter -U1- 12 V socket -U5-
4	15	Trailer detector control unit -J345-
5	5	Data bus diagnostic interface -J533-
6	30	Front passenger door control unit -J387- Rear right door control unit -J389-
7	30	Driver door control unit -J386- Rear left door control unit -J388-
8	30	Heated rear window relay -J9- Heated rear window -Z1-
9	25	ABS control unit -J104-
10	20	Onboard supply control unit -J519-
11	15	High tone horn -H2- Low tone horn -H7- Horn relay -J413-
12	30	Onboard supply control unit -J519-
Brown
1	5	Alarm horn -H12- Anti-theft alarm sensor -G578-
2	5 19)16) 7.5 14)15)17)18)20)	Terminal 30 voltage supply relay -J317-22) Motronic current supply relay -J271-21) Engine control unit -J623-
3	5	Onboard supply control unit -J519-
4	515 23)	ABS control unit -J104- Voltage stabiliser 2 -J570- All-wheel drive control unit -J492-23)
5	–	Vacant
6	5	Light/rain sensor -G397- Aerial amplifier for mobile telephone -R86- Telephone bracket -R126- Front roof module -WX3-
7	15 21) 20 22)	Fuel pump control unit -J538- 21) Fuel pump relay -J17- 22)
8	10 21)	Auxiliary coolant pump relay -J496-, up to October 2014
9	5	Steering column electronics control unit -J527-
10	5	Light switch -E1-
11	10	Climatronic control unit -J255- Air conditioning system control unit -J301- Front passenger door control unit -J387- (up to April 2012) Rear right door control unit -J389- (up to April 2012) 16-pin connector -T16-, diagnosis connection
12	10	Driver door control unit -J386- (up to April 2012) Rear left door control unit -J388- (up to April 2012)
13	10	Onboard supply control unit -J519-
14	20	Relay for power sockets -J807-, for models without trailer socket only
15	30	Onboard supply control unit -J519-
16	20	Wiper motor switch-over relay 1 -J368-, up to October 2014 Engine component current supply relay -J757-23)24) Ignition coil 1 with output stage -N70-23)24) Ignition coil 2 with output stage -N127-23)24) Ignition coil 3 with output stage -N291-23)24) Ignition coil 4 with output stage -N292-23)24)
Red
1	5 19)20) 20 15)16)17)	Automatic glow period control unit -J179- Vacuum pump for brakes -V192-
2	105 34)	Brake light switch -F- (up to October 2011) brake pedal switch -F63- (up to October 2011) auxiliary coolant pump relay -J496- Lambda probe heater -Z19- (up to October 2011) Lambda probe 1 heater after catalytic converter -Z29-, (up to October 2011) Supply Fuse 9 on fuse holder F -SF9-, (from November 2011, up to October 2014) Supply Fuse 10 on fuse holder F -SF10- (from November 2011, up to October 2014) ABS control unit -J104-, from November 2011
3	5 18)19)20) 7.5 16) 15 14)15)17)	Air mass meter -G70-, up to October 2014 Fuel pump relay -J17-, up to October 2014 Low heat output relay -J359-, up to October 2014 High heat output relay -J360-, up to October 2014 Engine component current supply relay -J757-, up to October 2014 Fuel pressure regulating valve -N276-, up to October 2014 Coolant circulation pump -V50-, up to October 2014
4	15 14)15)17)16) 25 18) 30 19)20)	Engine control unit -J623- Clutch position sender -G476-, up to October 2011 Brake light switch -F-, up to October 2011
5	20 18) 15 19)20) 20 14)15)17) 30 16)	Ignition coil 1 with output stage -N70-, up to October 2014 Ignition coil 2 with output stage -N127-, up to October 2014 Ignition transformer -N152-, up to October 2014 Fuel pressure regulating valve -N276-, up to October 2014 Fuel metering valve -N290-, up to October 2014 Ignition coil 3 with output stage -N291-, up to October 2014 Ignition coil 4 with output stage -N292-, up to October 2014
6	10 20 16)	Radiator fan control unit -J293-, up to October 2014 Heater element relay -J925-, up to October 2014 Charge pressure control solenoid valve -N75-, up to October 2014 Activated charcoal filter solenoid valve 1 -N80-, up to October 2014 Exhaust camshaft control valve 1 -N205-, up to October 2014 Recirculation valve for turbocharger -N249-, up to October 2014 Intake manifold flap valve -N316-, up to October 2014 Exhaust camshaft control valve 1 -N318-, up to October 2014 Switchover valve for exhaust recirculation cooler -N345-, up to October 2014 Oil pressure regulation valve -N428-, up to October 2014 Intake cam adjuster for cylinder 2 -N583-, up to October 2014 Exhaust cam adjuster for cylinder 2 -N587-, up to October 2014 Intake cam adjuster for cylinder 3 -N591-, up to October 2014 Exhaust cam adjuster for cylinder 3 -N595-, up to October 2014 Pump for exhaust recirculation cooler -V400-
7	5	CD changer -R41-
8	5	Internet access control unit -J666- Chip card reader control unit -J676- Radio -R- TV tuner -R78-
9	5	Control unit in dash panel insert -J285-
10	5	Relay for automatic anti-dazzle interior mirror -J910- Automatic anti-dazzle interior mirror -Y7-
11	7.5 32) 15 33)	Radio -R- Control unit for information electronics 1 -J794-
12	5	Display unit for front information display and operating unit control unit -J685-
14) for models with 1.2 l petrol engine only 15) for models with 1.4 l petrol engine (90 kW) only 16) for models with 1.4 l petrol engine (103 kW) only 17) for models with 1.4 l petrol engine (136 kW) only 18) for models with 2.0 l petrol engine only 19) for models with 1.6 l diesel engine only 20) for models with 2.0 l diesel engine only 21) for models with petrol engine only 22) for models with diesel engine only 23) for models with 2.0 l petrol engine, from January 2014 24) for models with 1.8 l petrol engine, from November 2014 32) for models with MMI only 33) for models without MMI only 34) from November 2011

Fuse holder D -SD-

No.	A	Function/component
Black
1	7.5	ESL control unit -J764-
2	20	Trailer detector control unit -J345-
3	20	Trailer detector control unit -J345-
4	30 7.5	Mechatronic unit for dual clutch gearbox -J743-, up to October 2014 Electronically controlled damping control unit -J250-, from January 2014
5	30	Headlight washer system relay -J39- Headlight washer system pump -V11-
6	5	Interface control unit for vehicle location system -J843-
7	7.5	Entry and start authorisation control unit -J518-
8	15	Mechatronic unit for dual clutch gearbox -J743-, up to October 2014
9	20	Sliding sunroof motor -V1-
10	7.5	Selector lever sensors control unit -J587-
11	15 35)	Engine component current supply relay -J757-, up to October 2014 Fuel pressure regulating valve -N276- , up to October 2014
12	–	Vacant
Brown
1	5	Reversing light switch -F4- Selector lever sensors control unit -J587- Mechatronic unit for dual clutch gearbox -J743-
2	10	High-pressure sender -G65- Oil level and oil temperature sender -G266- Air conditioning system control unit -J301- Relay for power sockets -J807- Automatic anti-dazzle interior mirror -Y7- 16-pin connector -T16-, diagnosis connection
3	5	Data bus diagnostic interface -J533-
4	5	Heater control unit -J65- Control unit for structure-borne sound -J869-
5	7.5	Light switch -E1- Starter relay 1 -J906- Voltage stabiliser -J532- Starter relay 2 -J907- Relay for automatic anti-dazzle interior mirror -J910- Front left headlight -MX1- Front right headlight -MX2-
6	5	Light switch -E1-
7	5	ABS control unit -J104-, up to October 2014 Voltage stabiliser 2 -J570-, up to October 2014 Electronically controlled damping control unit -J250-, from January 2014
8	5	Heated driver seat regulator -E94- Heated front passenger seat regulator -E95- Hazard warning lights button -E229- Heated rear window button -E230- TCS and ESP button -E256- Parking aid button -E266- Tyre pressure monitor display button -E492- Start/Stop operation button -E693- Trailer detector control unit -J345- Left washer jet heater element -Z20- Right washer jet heater element -Z21-
9	5	Power steering control unit -J500-
10	5 36) 7.5 37)	Air mass meter -G70- Fuel pump control unit -J538- Crankcase breather heater element -N79-
11	5	Airbag control unit -J234- Front passenger airbag deactivated warning lamp -K145-
12	5	Parking aid control unit -J446-
13	5	Control unit for headlight range control -J431-
14	30	Seat heating control unit -J882-
15	15	Rear window wiper motor -V12-
16	5	Engine control unit -J623- Air mass meter -G70-
Red
1	–	Vacant
2	–	Vacant
3	10	All-wheel drive control unit -J492- , gradual phase-out
4	–	Vacant
5	–	Vacant
6	–	Vacant
7	–	Vacant
8	–	Vacant
9	–	Vacant
10	5 10	Special vehicle control unit -J608-
11	–	Vacant
12	–	Vacant
35) for models with 2.0 l petrol engine only 36) for models with petrol engine only 37) for models with diesel engine only

Relay/fuse holder F -SF-

No.	A	Function/component
1	40	Voltage stabiliser -J532-
2	50	Supply fuse carrier 1 -ST1- in fuse holder D -SD-
3	40	Terminal 15 voltage supply relay -J329-
4	40	ABS control unit -J104-
5	5	Voltage stabiliser 2 -J570-, gradual phase-out
6	5	Onboard supply control unit -J519- Voltage stabiliser -J532- Voltage stabiliser 2 -J570-, gradual phase-out Engine control unit -J623-
16	10	Brake light switch -F- (from November 2011, up to October 2014) Clutch position sender -G476- (from November 2011, up to November 2014)
17	5	Lambda probe heater -Z19- (from November 2011, up to October 2014) Lambda probe 1 heater after catalytic converter -Z29- (from November 2011, up to November 2014)

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