Audi A4 (B8, 2007 - 2015) fuses and relays

A4 (B8) is the fourth generation of the mid-size sedan and station wagon of the German company Audi. This generation was produced from 2007 to 2015. Restyling took place in 2011. In this material, we will analyze in detail the fuse diagrams of the Audi A4 (B8) of the 4th generation: 2007, 2008, 2009, 2010, 2011 and 2012, 2013, 2014, 2015 release.

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

In the luggage compartment

The location of the fuse box in the luggage compartment of the car.
The block is located on the right side of the trunk, behind the trim panel.


General form.


Access example.

Diagram (2007 - 2011 model year)
Models 2007 - 2009
No. A Purpose
Black panel
1
2 15 trailer control unit
3 20 trailer control unit
4 20 trailer control unit
5 5 Electronic parking brake
6 15 Electronic suspension control
7 30 Electromechanical parking brake
8 30 Vehicle onboard network control unit 2
9
10 30 Vehicle onboard network control unit 2
11 20 Vehicle onboard network control unit 2
12
Brown panel
1 15 Socket 12 V
2
3 7.5 Radio / navigation
4 30 Digital Sound System Control Unit
5 5 MMI
6 30 Door control unit (driver's side)
7 30 Electromechanical parking brake
8 30 Rear seat heating
9 30 Door control unit (passenger side)
10 5 Auxiliary heater remote control receiver
11 15 Door control unit (passenger side)
12 5 Rear view camera control unit
Red panel
1 15 Socket, center console, rear
2 15 Outlet, center console, front
3 15 Socket, luggage compartment
4 15 cigarette lighter fuse
5 5 Assistance with parking
6 5 Phone Preset without Handsfree System (VDA Interface)
7 15 Adaptive cruise control control unit
8
9 5 EPB switch (electromechanical parking brake)
10 5 Lane change assist function
11 5 Rear seat heating
12 5 Air bag
Models 2010 - 2011
No. Purpose
Black panel B
1 30 Trunk Lid Control Module (Avant)
2 15 trailer control module
3 20
4 20
5 5 Electromechanical parking brake
6 15 Electronic damping control
7 30 Electromechanical parking brake
8 30 Onboard supply control module 2
9 35 Quattro Sport
10 30 Onboard supply control module 2
11 20 Onboard supply control module 2
12 5 Terminal 30
Brown panel C
1 30 Trunk Lid Control Module
2 15 Heated front right seat
3 40 DC/DC converter path 1
4 40 DC to DC converter path 2
5 30 Connector
6
7 30 Electromechanical parking brake
8 30 Rear seat heating
9 30 Passenger side door control module
10
11 15 Passenger side door control module
12
Red panel D
1 15 Exit to the rear center console
2 15 Front center console socket
3 15 Exit from the luggage compartment
4 15 cigarette lighter fuse
5 5 V6FSI
6 5 Supply entertainment for rear seat passengers
7 7.5 parking system
8 15 Rear wiper (Avant)
9 5 Electromechanical parking brake switch
10 5 Audi side assistant
11 5 Rear seat heating
12 5 Terminal 15 control modules
Black panel E
1
2
3 30
20
DSP amplifier, radio
4 7.5 MMI
5 7.5 Preparing for radio/navigation/cell phone
6 5 Rear View Camera
7
8
9
10
11
12
Diagram (2011 - 2015 model year)
Models 2011 - 2013
No. A Description
Black panel B
1 30 Trunk Lid Control Module (Avant)
2 15 trailer control module
3 20 trailer control module
4 20 trailer control module
5 5 Electromechanical parking brake
6 15 Electronic damping control
7 30 Electromechanical parking brake
8 30 Onboard supply control module 2
9 35 Quattro Sport
10 30 Onboard supply control module 2
11 20 On-board network control module
12 5 Terminal 30
Brown panel C
1 30 Trunk Lid Control Module
2 15 Heated front right seat
3 40 DC/DC converter path 1
4 40 DC to DC converter path 2
5 30 Connector
6
7 30 Electromechanical parking brake
8 30 Rear seat heating
9 30 Passenger side door control module
10
11 15 Passenger side door control module
12
Red panel D
1 15 Exit to the rear center console
2 15 Front center console socket
3 15 Exit from the luggage compartment
4 15 Audi b8 cigarette lighter fuse
5 5 V6FSI
6 5 Supply entertainment for rear seat passengers
7 7.5 parking system
8 15 Rear wiper (Avant)
9 5 Electromechanical parking brake switch
10 5 Audi side assistant
11 5 Rear seat heating
12 5 Terminal 15 control modules
Black panel E
1
2
3 30/20 DSP amplifier, radio
4 7.5 MMI
5 7.5 Preparing for radio/navigation/cell phone
6
7 5 Cell phone preparation
8
9
10
11
12
Models 2014 - 2015
No. A Purpose
Black Panel A
1 30
2 30 rear glass (cabriolet)
3 30 Electric top latch (Cabriolet)
4 50 Power top hydraulic system (convertible)
Black panel B
1 30/10 Trunk Lid Control Module (Universal) / Top Drive Control Module (Convertible)
2 10 Retractable rear spoiler (RS 5 Coupe)
3
4
5 5 Electromechanical parking brake
6 15 Electronic damping control
7 30 Electromechanical parking brake
8 30 Rear exterior lighting
9 35 Quattro Sport
10 30 Rear exterior lighting
11 20 central locking
12 5 Terminal 30
Brown panel C
1 30 Trunk lid control unit (allroad)
2 20 12 volt socket, cigarette lighter fuse Audi A4
3 40 DCDC converter path 1
4 40 DCDC converter path 2. DSP amplifier, radio
5 30 Heating of the right upper cab (Cabriolet)
6
7 30 Electromechanical parking brake
8
9 30 Right front door (power window, central locking, mirror, switch, lighting)
10 30 Heating of the left top cabin (Convertible)
11 30 2-door models: right rear window regulator, 4-door models: right rear window (window regulator, central locking, switch, lighting)
12 5 Cell phone preparation
Black panel E
1 15 Heated front right seat
2
3
4 7.5 MMl
5 5 Radio
6 5 Rear View Camera
7 30 Rear window heater (allroad)
8 5 Rear seat multimedia
9
10
11
12

In the cabin


There are two mounting blocks here: one on the driver's side, the other on the passenger side.


The photo is an example of a driver's side block.

Assigment of fuses in the driver's side box (Audi A4 B8; 2007 - 2011 model year)
Models 2007 - 2009
No. A Description
Black Panel A
1 5 Dynamic Steering
2 5 clutch sensor
3 5 Garage door opener
4 10 Audi lane assist
5 5 Air conditioning
6 5 Headlight beam leveler (right)
7 5 Headlight range control (left)
8 5 Vehicle onboard network control unit 1
9 5 Interior mirrors
10 5 selector valve
11 5 Heated washer jets
12 5 Air conditioning
Brown panel B
1
2 5 clutch sensor
3 20/25 Fuel pump (diesel / gasoline)
4 5 Auxiliary water pump (3.2 FSI)
5 30 Seat heating (left) with / without seat ventilation
6 10 Electronic stabilization program
7 25 Horn
8 30 Power window motor (left door)
9 30 wiper motor
10 25 Electronic stabilization program
11 15 Door control unit (driver's side)
12 5 Rain and light sensor
Red Panel C
1
2
3 10 Lumbar support
4 35 Dynamic Steering
5 5 Inner Light
6 35 Vehicle onboard network control unit 1
7 30 Vehicle onboard network control unit 1
8 30 Vehicle onboard network control unit 1
9 20 Panoramic tilt roof / sunroof
10 30 Vehicle onboard network control unit 1
11
12 5 Comfort electronics
Models 2010 - 2011
No. A Purpose
Black Panel A
1 5 Dynamic Steering
2
3 5 homelink
4
5 5 climate control
6 5 Adjusting the angle of the right headlight
7 5 Adjusting the angle of the left headlight
8 5 Onboard supply control module 1
9 5 Adaptive cruise control
10 5 Shift gate
11 5 Heater washer jets
12 5 climate control
13 5 Cell phone preparation
14 5 Air bag
15 25 Terminal 15
16 40 Terminal 15 motor
Brown panel B
1 5 Auto-dimming rearview mirror
2 5 clutch sensor
3 25 petrol fuel pump
4 5 Auxiliary water pump 3.2L FSI
5 15/30 Left seat heating with / without seat heating
6 10 Electronic stabilization program
7 25 Horn
8 30 Power window motor, left door
9 30 wiper motor
10 25 Electronic stabilization program
11 15 Left door
12 5 Rain and light sensor
Red Panel C
1
2
3 10 Lumbar support
4 35 Dynamic Steering
5 5 Climate cup holder
6 35 Onboard supply control module 1
7 20 Onboard supply control module 1
8 30 Onboard supply control module 1
9 20 Panoramic sunroof
10 30 Onboard supply control module 1
11 20 Panoramic sunroof
12 5 Comfort electronics
Assigment of fuses in the driver's side box (Audi A4 B8; 2011 - 2015 model year)
Models 2011 - 2013
No. Purpose A
Black Panel A
1 Dynamic Steering 5
2
3 homelink 5
4
5 climate control 5
6 Adjusting the angle of the right headlight 5
7 Adjusting the angle of the left headlight 5
8 Onboard supply control module 1 5
9 Adaptive cruise control 5
10 Shift gate 5
11 Heater washer jets 5
12 climate control 5
13 Cell phone preparation 5
14 Air bag 5
15 Terminal 15 25
16 Terminal 15 motor 40
Brown panel B
1 Auto-dimming rearview mirror 5
2 clutch sensor 5
3 petrol fuel pump 25
4
5 Left seat heating with / without seat heating 15/30
6 Electronic stabilization program 10
7 Sound signal 25
8 Power window motor, left door 30
9 wiper motor 30
10 Electronic stabilization program 25
11 Left door 15
12 Rain and light sensor 5
Red Panel C
1
2
3 Lumbar support 10
4 Dynamic Steering 35
5 Antenna 5
6 Onboard supply control module 1 35
7 Onboard supply control module 1 20
8 Onboard supply control module 1 30
9 sunroof 20
10 Onboard supply control module 1 30
11 Hatch Shadow (Avant) 20
12 Comfort electronics 5
Models 2014 - 2015
No. Purpose A
Black Panel A  
1 Dynamic Steering 5
2 Electronic stabilization control (module) 5
3 A/C system pressure sensor, electromechanical parking brake, Homelink. Auto-dimming interior rearview mirror, air quality/outside air sensor, electronic stabilization control (button) 5
4
5 sound drive 5
6 Headlight range adjustment / head light (corner light) 5 / 7.5
7 Headlight (turning light) 7.5
8 Control modules (electromechanical parking brake, shock absorber, quattro sport), DCDC converter 5
9 Adaptive cruise control 5
10 Shift/Clutch Door Sensor 5
11 Lateral assistance 5
12 Headlight range adjustment, parking system 5
13 Air bag 5
14 Rear wiper (allroad) 15
15 Auxiliary fuse (dashboard) 10
16 Auxiliary fuse terminal 15 (engine area) 40
Brown panel B
1
2 Stop light sensor 5
3 Gasoline pump 25
4 clutch sensor 5
5 Left seat heating with / without seat ventilation 15/30
6 Electronic stabilization control (electric) 5
7 Sound signal 15
8 Front left door (power window, central locking, mirror, switch, lighting) 30
9 Windshield wiper motor 30
10 Electronic stabilization control (valves) 25
11 Two-door models: rear left window regulator, Four-door models: rear left door (window regulator, central locking, switch, lighting) 30
12 Rain and light sensor 5
Red Panel C
1
2
3 Lumbar support 10
4 Dynamic Steering 35
5 Interior lighting (Convertible) 5
6 Windshield washer, headlight washer 35
7 Onboard supply control module 1 20
8 30
9 Power window motor, left (convertible) / sunroof 7.5 / 20
10 Onboard supply control module 1 30
11 Sunblind Motor, Right Rear Window Lift (Convertible) 7.5 / 20
12 Theft warning system 5

 

Location of the additional fuse box in the passenger compartment
At the end of the dashboard on the passenger side is another block.


Example of access to the passenger block.


General form.

Diagram (Audi A4 B8; 2007 - 2011 model year)
Models 2007 - 2009
No. A Purpose
Back panel
1
2
3
4
5 5 Steering column switch module
6 5 Electronic stabilization program
7 5 Diagnostic connector
8 5 Gateway (diagnostic interface for data bus)
9
10
11
12
Brown panel
1 5 CD drive
2 5 Switching module for Audi drive select
3 10/20 MMI / Radio
4 5 Switch
5 5 Instrument cluster control unit
6 5 Egnition lock
7
8 40 air conditioner fan
9 5 Steering column lock
10 10 Air conditioning
11 10 Diagnostic connector
12 5 Steering column switch module
Models 2010 - 2011
No. A Purpose
Black panel
1
2
3
4
5 5 Steering column switch module
6 5 Electronic stabilization program
7 5 Terminal 15 of the diagnostic socket
8 5 Gateway
9
10
11
12
Brown panel
1 5 CD drive
2 5 Audi Drive Select Switch Module
3 5/20 MMI / Radio
4 5 instrument panel
5 5 Gateway
6 5 Egnition lock
7 5 Rotary light switch
8 40 Climate control system
9 5 Steering column lock
10 10 climate control
11 10 Terminal 30 of the diagnostic socket
12 5 Steering column switch module
Audi A4 (B8; 2011 - 2015 model year) passenger side fuse diagram
Models 2011 - 2013
No. A Description
Black panel A
1
2
3
4
5 5 Steering column switch module
6 5 Electronic stabilization program
7 5 Terminal 15 of the diagnostic socket
8 5 Gateway (data bus diagnostic interface)
9
10
11
12
Brown panel B
1 5 CD/DVD player
2 5 Audi Drive Select Switch Module
3 5/20 MMI / Radio
4 5 instrument panel
5 5 Gateway (instrument cluster control module)
6 5 Egnition lock
7 5 Rotary light switch
8 40 climate control blower
9 5 Steering column lock
10 10 climate control
11 10 Terminal 30 of the diagnostic socket
12 5 Steering column switch module
Models 2014 - 2015
No. A Purpose
Black Panel A
1
2
3
4
5 5 Steering column switch module
6
7 5 Terminal 15 of the diagnostic socket
8 5 Gateway (data bus diagnostic interface)
9 5 Additional heater
10
11
12
Brown panel B
1 5 CD/DVD player
2 5 Wi-Fi
3 5/20 MMI / Radio
4 5 instrument panel
5 5 Gateway (instrument cluster control module)
6 5 Egnition lock
7 5 Switch
8 40 Climate control fan
9 5 Steering column lock
10 10 Climate control system
11 10 Terminal 30 of the diagnostic socket
12 5 Steering column switch module

Additional passenger compartment fuse blocks

Place of installation of the cabin control unit of the onboard network.
The onboard network control unit is located on the driver's side under the dashboard.

No. Description
A ABS fuse -S123-
1 empty
2 Circulation pump relay, horn -J413-, vacuum pump -J318-, automatic dimming interior mirrors -J910-
3 Power relay cl. 15.J329-
4 Taxi anti-theft alarm remote control module -J601-


The 6-pin switch box is located on the pillar behind the side trim in the driver's footwell.

 
No. Description A
F Thermal fuse, front passenger seat 15
G Driver's seat thermal fuse 15

In the engine compartment


Switching box No. 1 is located on the left side of the engine compartment. Block No. 2 is located in the center of the drainage box.

Diagram of the switching box No. 1
No. Description (2007-2011 model year) A
1 Automatic transmission control unit. Mechatronics for dual clutch gearboxes 15
2 Engine oil level and temperature sensor 5
3 Engine control unit. Air mass meter 5
4 Engine control unit 5
5 Air flow meter. Control unit for automatic glow plugs. Secondary air pump relay. Low heating relay. High power heating relay. Boost pressure control solenoid valve. Heating resistor of the crankcase ventilation system. Solenoid valve 1 adsorber. Secondary air control valve. solenoid valve of the left electro-hydraulic engine mount. solenoid valve of the right electro-hydraulic engine mount. Intake manifold changeover valve . Air filter bypass valve -. Fuel pressure control. Fuel metering valve. Secondary air supply control valve 2-. Change-over valve for the exhaust gas recirculation cooler. Valve for reducing oil pressure. Fuel System Diagnostic Pump 15/10/20
6 Engine control unit 15
7
  • actuating element of the valve timing control system.
  • Boost pressure control solenoid valve.
  • The canister solenoid valve is the solenoid valve of the left and right electro-hydraulic engine mounts.
  • Valve of the variable valve timing system.
  • Charge air recirculation valve.
  • Fuel pressure control-.
  • Fuel metering valve.
  • Intake manifold flap valve -N316-.
  • The valve of a regulator of phases of gas distribution of final valves -.
  • Climatronic coolant shut-off valve.
  • Valve for reducing oil pressure.
  • Fuel system diagnostic pump.
  • air cooling pump
15/10
8 Exhaust gas recirculation cooler pump -V400-. Ignition coil 1 with output stage. Ignition coil 2 with output stage. Ignition coil 3 with output stage. Ignition coil 4 with output stage. Ignition coil 5 with output stage. Ignition coil 6 with output stage 5/20/10
9 Additional fuel pump relay. Heating element lambda probe 1 after the catalyst. Heating element lambda probe 2 after catalytic converter 15/20/5
10 Heating element of the lambda probe. Heating element lambda probe 2. Heating element lambda probe 1 after the catalytic converter 15/10
11 Radiator fan control unit. Control unit 2 radiator fans 5
12 Air flow meter. Mechatronic automatic transmission control unit for dual clutch gearboxes 5
A Engine Component Power Relay, Used Automatic Glow Plug System
B Starter relay 2
C Secondary air pump relay
D Motronic system power relay, Power relay cl. thirty
E Fuel pump relay, gearbox cooling circuit, power supply for engine components 2, coolant recirculation after engine shutdown
F empty
No. Description (2011-2015 model year) A
1 Automatic transmission control unit - Mechatronic for dual clutch gearboxes 15
2 Engine oil level and temperature sensor 5
3 Engine control unit 5
4 5
5 Air flow meter. Fuel pressure control. Fuel metering valve 10/15
6 Engine control unit - Injector 2 cylinders 1, 2, 3, 4 15
7 actuating element 1, 2, 3, 4, 5, 6, 7, 8 of the valve timing control system. Boost pressure control solenoid valve. Solenoid valve 1 adsorber solenoid valve of the left electro-hydraulic engine support. solenoid valve of the right electro-hydraulic engine mount. Valve 1 and 2 of the variable valve timing system. Charge air recirculation valve. Fuel pressure control.  
8 NOx sensor 2. NOx sensor control unit 2 10/15/5
9 Voltage regulator. Engine control unit 5
10 Heating element lambda probe 15/10
11 Radiator fan control unit 5
12 Automatic transmission control unit 5
13 empty -
14 Power supply relay for engine components 2. Ignition coil 1 with output stage. 5/20
15 Power steering control unit 5
16 Thermostat of the parametric engine cooling system. Control unit for automatic glow plugs 15
17 Heating element lambda probe after the catalyst 15
A Power supply relay for engine components
B Starter relay 2
C Secondary air pump relay
D Motronic Power Relay
E Fuel pump relay, gearbox cooling circuit, power supply for engine components 2, coolant recirculation after engine shutdown
F empty
Board No. 2
No. Description A
1 400W fan control system. / 600 W 40/60
2 Fan control 400 watts 40
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