A4 Cabriolet Mk2: Vehicle electrics
Also for this vehicle: A4 Cabriolet L4-1.8L Turbo (AMB) (2005), A4 Cabriolet L4-2.0L Turbo (BWT) (2007), A4 Cabriolet V6-3.0L (AVK) (2003), A4 Mk1, A4 Mk2, A4 Mk3, A4 Quattro Cabriolet L4-2.0L Turbo (BWT) (2009), A4 Quattro Cabriolet V6-3.0L (BGN) (2005), A4 Quattro Cabriolet V6-3.2L (BKH) (2007), A4 Quattro Sedan L4-1.8L Turbo (AEB) (1998), A4 Quattro Sedan L4-1.8L Turbo (ATW) (2000), A4 Quattro Sedan L4-1.8L Turbo (AWM) (2001), A4 Quattro Sedan L4-2.0L Turbo (BPG) (2005), A4 Quattro Sedan L4-2.0L Turbo (CAEB) (2009), A4 Quattro Sedan V6-2.8L (ACK) (1997), A4 Quattro Sedan V6-3.0L (AVK) (2002), A4 Quattro Sedan V6-3.2L (BKH) (2005), A4 Quattro Wagon (8K5) L4-2.0L Turbo (CAEB) (2011), A4 Quattro Wagon L4-1.8L Turbo (AEB) (1999), A4 Quattro Wagon L4-1.8L Turbo (ATW) (2000), A4 Quattro Wagon L4-1.8L Turbo (AWM) (2001), A4 Quattro Wagon L4-2.0L Turbo (BPG) (2005), A4 Quattro Wagon L4-2.0L Turbo (CAEB) (2009), A4 Quattro Wagon V6-2.8L (AHA) (1998), A4 Quattro Wagon V6-3.0L (AVK) (2002), A4 Quattro Wagon V6-3.2L (BKH) (2005), A4 Sedan L4-1.8L Turbo (AEB) (1997), A4 Sedan L4-1.8L Turbo (ATW) (2000), A4 Sedan L4-1.8L Turbo (AWM) (2001), A4 Sedan L4-2.0L Turbo (BPG) (2005), A4 Sedan V6-2.8L (AFC) (1996), A4 Sedan V6-2.8L (AHA) (1998), A4 Sedan V6-3.0L (AVK) (2002), A4 Sedan V6-3.2L (BKH) (2007), A4 V6-3.0L (AVK) (2004).
Steering & suspension
Body & interior
Engine
Transmission
General
Heating & A/C
Choose Sections to see everything in a chapter, or a chapter title to start at its first page.
Electrical system257 pages
Starter-current supply-CC31 pages
- Contact corrosion
Removing and installing alternator9 pages
Removing and installing starter8 pages
- Cruise control system (CCS)
Instruments, GCI27 pages
- Contact corrosion
Instrument cluster19 pages
- Fault message "dEF” in trip recorder display
- Removing and installing instrument cluster
- Multi-pin connectors on instrument cluster
- Pin assignment at multi-pin connectors on instrument cluster
- Pin assignment at fuel gauge sender G - vehicles with front-wheel drive
- Pin assignment at fuel gauge senders - vehicles with four-wheel drive
Pin assignment at coolant temperature display sender G27 pages
- Unplugging electrical connector at coolant temperature display sender G2 - vehicles with 1.8 ltr. turbo engine
- Unplugging electrical connector at coolant temperature display sender G2 - vehicles with 2.0 ltr. MPI engine
- Unplugging electrical connector at coolant temperature display sender G2 - vehicles with 2.4 ltr. MPI engine
- Unplugging electrical connector at coolant temperature display sender G2 - vehicles with 3.0 ltr. MPI engine
- Unplugging electrical connector at coolant temperature display sender G2 (vehicles with 4.2 ltr. MPI engine)
- Unplugging electrical connector at coolant temperature display sender G2 - vehicles with 2.5 ltr. TDI engine
Pin assignment at coolant temperature sender G624 pages
- Unplugging electrical connector at coolant temperature sender G62 - vehicles with 3.2 ltr. FSI engine
- Unplugging electrical connector at coolant temperature sender G62 - vehicles with 2.0 ltr. TDI engine
- Unplugging electrical connector at coolant temperature sender G62 - vehicles with 2.7 ltr. or 3.0 ltr. TDI engine
- Removing and installing radio-controlled clock receiver J489
Windscreen wipe/wash system16 pages
- Contact corrosion
Windscreen wiper system5 pages
Windscreen washer system4 pages
- Washer fluid hoses
Lights, lamps, switches outside115 pages
- Contact corrosion
Halogen headlights - vehicles up to model year 200611 pages
- Halogen headlights - exploded view
- Removing and installing headlights
- Adjusting headlights
- Renewing bulb for dipped beam headlights
- Renewing bulb for main beam headlights
- Renewing bulb for side lights
- Renewing bulb for turn signal
- Removing and installing headlight range control motor
- Installing repair kit for headlight housing
- Converting headlights for driving on the left or right side of the road
Halogen headlights - vehicles from model year 2007 onwards12 pages
- Halogen headlights - exploded view
- Removing and installing headlights
- Adjusting headlights
- Renewing bulb for dipped beam headlights
- Renewing bulb for main beam headlights
- Renewing bulb for side lights
- Renewing bulb for turn signal
- Installing repair kit for headlight range control motor
- Installing repair kit for headlight housing
- Adjusting headlights from right-hand traffic to left-hand traffic
- Adjusting headlights from left-hand traffic to right-hand traffic
Gas discharge headlights - vehicles up to model year 200613 pages
- Safety precautions when handling gas discharge bulbs
- Gas discharge headlights - exploded view
- Removing and installing headlights
- Adjusting headlights
- Renewing gas discharge bulb
- Renewing bulb for main beam headlights
- Renewing bulb for side lights
- Renewing bulb for turn signal
- Removing and installing left/right gas discharge bulb control unit J343 / J344
- Removing and installing headlight range control motor V48 / V49
- Installing repair kit for headlight housing
- Converting headlights for driving on the left or right side of the road
Gas discharge headlights - vehicles from model year 2007 onwards26 pages
- Safety precautions when handling gas discharge bulbs
- Gas discharge headlights - exploded view
- Removing and installing headlights
- Adjusting headlights
Preparations before working on headlights8 pages
- Removing washer fluid reservoir (top section) and detaching power steering reservoir
- Removing air cleaner housing - vehicles with 1.8 ltr. turbo engine
- Removing air cleaner housing - vehicles with 2.0 ltr. TFSI engine
- Removing air cleaner housing - vehicles with 3.2 ltr. FSI engine
- Removing air cleaner housing - vehicles with 4.2 ltr. MPI engine
- Removing air cleaner housing (vehicles with 2.0 ltr. TDI engine)
- Removing air cleaner housing (vehicles with 2.7 ltr. or 3.0 ltr. TDI engine)
- Renewing gas discharge bulb
- Renewing bulb for daytime running lights
- Renewing bulb for side lights
- Removing and installing main and dip beam switch-over solenoid N347 / N348
- Renewing bulb for turn signal
- Removing and installing left/right gas discharge bulb control unit J343 / J344
- Removing and installing left/right swivel module position sensor G474 / G475
- Removing and installing power output module for headlights J667 / J668
- Removing and installing dynamic cornering light control motor V318 / V319
- Removing and installing headlight range control motor V48 / V49
- Installing repair kit for headlight housing
- Adjusting headlights for driving on the left or right side of the road - vehicles with adjustment lever
- Adjusting headlights for driving on the left or right side of the road - vehicles without adjustment lever
Fog lights - vehicles up to model year 20064 pages
Fog lights - vehicles from model year 2007 onwards6 pages
Rear lights - vehicles up to model year 20064 pages
Rear lights - vehicles from model year 2007 onwards4 pages
Steering column switch module12 pages
- Steering column switch module
- Steering column switch module - exploded view
- Removing and installing steering column switch module
- Removing and installing return ring with slip ring
- Removing and installing steering angle sender G85
- Removing and installing steering column electronics control unit J527
- Pin assignment at steering column electronics control unit J527 (front)
- Pin assignment at steering column electronics control unit J527 (reverse side)
- Removing and installing turn signal switch E2
- Removing and installing switch for cruise control system E45
- Removing and installing intermittent wiper switch E22
Lock cylinder and ignition/starter switch4 pages
Parking aid9 pages
- Parking aid - overview
- Removing and installing parking aid control unit J446
- Removing and installing front parking aid warning buzzer H22 (8-channel parking aid)
- Removing and installing rear parking aid warning buzzer H15 - vehicles up to 02.2007
- Removing and installing rear parking aid warning buzzer H15 - vehicles from 02.2007 onwards
- Removing and installing front parking aid senders - vehicles up to model year 2006
- Removing and installing front parking aid senders - vehicles from model year 2007 onwards
- Removing and installing rear parking aid senders
Automatic headlight range control3 pages
Lights, lamps, switches inside, anti-theft system45 pages
- Contact corrosion
Switches19 pages
- Removing and installing light switch
- Removing and installing headlight range control adjuster and "coming home” switch
- Removing and installing switches in centre console
- Removing and installing seat heating switches (front)
- Removing and installing heated rear seat switch with regulator E128 / E129
- Removing and installing glove compartment light switch E26
- Removing and installing convertible roof actuation button E137
- Removing and installing mirror adjustment switch E43
- Removing and installing window regulator switches E40 / E41 / E53 / E55
- Removing and installing door contact switch
- Removing and installing interior locking switch E150 / E198 (central locking switch)
- Removing and installing interior monitor deactivation switch E183 and rear lid release switch E165
- Removing and installing switches for seat memory with seat memory ON/OFF button
- Removing and installing garage door operation control unit J530 - vehicles up to model year 2006
- Removing and installing garage door operation control unit J530 - vehicles from model year 2007 onwards
- Removing and installing garage door operating unit E284 - vehicles up to 05.2006
- Removing and installing garage door operating unit E284 - vehicles from 06.2006 onwards
- Removing and installing rear lid contact switch
- Immobilizer
Ultrasonic interior monitoring5 pages
Interior lights15 pages
- Removing and installing vanity mirror light
- Removing and installing interior light/reading light (front) - vehicles up to 05.2006
- Removing and installing interior light/reading light (front) - vehicles from 06.2006 onwards
- Removing and installing LED for background lighting
- Renewing interior light/reading light bulbs (front) - vehicles up to 05.2006
- Renewing interior light/reading light bulbs (front) - vehicles from 06.2006 onwards
- Removing and installing warning lamp for airbag deactivated on front passenger side K145 (up to 05.2004)
- Removing and installing warning lamp for airbag deactivated on front passenger side K145 (from 06.2004 onwards)
- Removing and installing glove compartment light
- Removing and installing ashtray light (front)
- Removing and installing footwell light (front)
- Removing and installing bulb for door opener light
- Removing and installing door safety light and entry light
- Removing and installing luggage compartment lights
- Heated steering wheel
Wiring23 pages
- Contact corrosion
Relay carriers, fuse holders16 pages
- Removing and installing fuse holder
- Unplugging door separating connector (left-side)
- Removing and installing onboard supply control unit J519
- Removing and installing 9-position relay carrier
- Removing and installing 3-position relay carrier
- Removing and installing 4-position relay carrier
- Removing and installing A-pillar connector point (left-side)
- Removing and installing convenience system central control unit J393
- Unplugging door separating connector (right-side)
- Removing and installing A-pillar connector point (right-side)
- Removing and installing main fuse holder
- Removing and installing electronics box (plenum chamber)
- Removing and installing fan for electronics box (plenum chamber)
- Removing and installing 4-position relay carrier in electronics box (plenum chamber)
- Removing and installing connector point in electronics box (plenum chamber)
- Repairing wiring harnesses and electrical connectors
- Repairing connector housings and electrical connectors
- Releasing and dismantling connector housings
- Cleaning contact surfaces with contact surface cleaning set VAS 6410
- Repairing aerial wires
- Vehicle diagnostic, testing and information systems
Communication › Infotainment226 pages
Radio system47 pages
Radio systems - overview8 pages
- Radio "chorus” (up to week 21/04)
- Radio "chorus” BOSE (up to week 21/04)
- Radio "concert” / "symphony” and, from week 22/04, "chorus”
- Radio "concert” / "symphony” and, from week 22/04, "chorus” (BOSE)
- Radio generation II+
- Radio generation II+ BOSE
- Pre-fitted components for radio installation
Connectors and pin assignment10 pages
- Aerials in rear lid
- Overview of fitting locations
- Removing and installing "chorus” and "concert” radios
- Removing and installing "symphony” radio
- Activating/deactivating transport mode of "symphony II+” radio unit
Removing and installing CD changer R41 and checking wiring connection3 pages
- Removing and installing iPod holder R192
Removing and installing loudspeakers in doors3 pages
- Removing and installing rear loudspeaker
Removing and installing loudspeakers in dash panel3 pages
- Removing and installing amplifier R12
- Removing and installing amplifier R12 (BOSE)
- Function test for internal microphone R74
- Removing and installing internal microphone R74
- Removing and installing left aerial module R108
- Removing and installing right aerial module R109
Radio system SDARS (USA)26 pages
Radio systems - overview5 pages
- Aerials in rear lid
- Overview of fitting locations
Removing and installing, enabling satellite radio R1464 pages
- Removing and installing satellite tuner aerial R172
Telephone system26 pages
- General notes
Connectors and pin assignment7 pages
- Telephone transmitter and receiver unit R36 (mobile phone pre-installation) up to MY 02
- Telephone transmitter and receiver unit R36 (mobile phone pre-installation) from MY 03 onwards
- Telephone transmitter and receiver unit R36 (fixed installation telephone)
- Aerial amplifier for mobile telephone R86
- Pre-fitted components for mobile phone installation
- Telephone bracket R126
- Aerials in rear lid
- Overview of fitting locations
Removing and installing telephone bracket R1263 pages
- Removing and installing telephone transmitter and receiver unit R36
- Removing and installing telephone transmitter and receiver unit R36 (fixed installation telephone)
Removing and installing aerial amplifier for mobile telephone R863 pages
- Removing and installing telephone microphone R38
- Removing and installing telephone aerial R65
Telephone system (USA)8 pages
Navigation system IV (BNS 4.0)9 pages
- General notes
- Navigation system IV - overview
- Connectors on navigation system with CD drive control unit J401
- Aerials in rear lid
- Overview of fitting locations
- Removing and installing navigation system with CD drive control unit J401
- Removing and installing function selection switch 2 E272
- Removing and installing navigation system aerial R50
Navigation System II-D (Navigation System Plus)15 pages
Navigation system RNS-E12 pages
Navigation system RNS-E USA10 pages
Navigation system RNS-JP3 Japan12 pages
Navigation system RNS-JP4 Japan9 pages
Navigation system RNS-Low10 pages
Telematics system17 pages
- General notes
- Telematics system - overview
- Connectors on telephone/telematics control unit J526
- Aerials in rear lid
- Overview of fitting locations
- Activating/deactivating service mode
Removing and installing telephone and telematics control unit J526 /renewing unit3 pages
- Renewing telematics SIM card
- Initialising telephone/telematics control unit J526
- Removing and installing emergency battery for telematics A16
- Removing and installing emergency call button E276 and breakdown help button E275
- Removing and installing additional loudspeaker for telematics R91
- Removing and installing additional aerial for telematics R90
- Removing and installing connector for fax/laptop
Multi-function steering wheel9 pages
- General notes
- Multi-function steering wheel - overview
Removing and installing multi-function buttons3 pages
Removing and installing tiptronic buttons3 pages
Steering column electronics control unit J5275 pages
Fitting instructions: radio communication systems › Infotainment › Service installation of radio communication systems30 pages
- General notes
- Transmission power and possible fitting locations
- Voltage supply
- Aerial and aerial wire
- Other auxiliary equipment
- Overview of batteryA / transmitter and receiver unit / fuse / wiring harness
- Transmission power levels and aerial fitting locations for A2 (from model year 2001 onwards)
- Transmission power levels and aerial fitting locations for A3 (from model year 1997 up to model year 2003)
- Transmission power levels and aerial fitting locations for A3 (from model year 2004 onwards)
- Transmission power levels and aerial fitting locations for A3 Cabriolet (from model year 2008 onwards)
- Transmission power levels and aerial fitting locations for A4 (from model year 1995 up to model year 2000)
- Transmission power levels and aerial fitting locations for A4 (from model year 2001 up to model year 2007)
- Transmission power levels and aerial fitting locations for A4 (from model year 2008 onwards)
- Transmission power levels and aerial fitting locations for A4 Cabriolet (from model year 2003 onwards)
- Transmission power levels and aerial fitting locations for A5 Cabriolet (from model year 2009 onwards)
- Transmission power levels and aerial fitting locations for A5 Coupé (from model year 2008 onwards)
- Transmission power levels and aerial fitting locations for A6 (from model year 1998 up to model year 2004)
- Transmission power levels and aerial fitting locations for A6 (from model year 2005 onwards)
- Transmission power levels and aerial fitting locations for A8 (from model year 1994 up to model year 2002)
- Transmission power levels and aerial fitting locations for A8 (from model year 2003 onwards)
- Transmission power levels and aerial fitting locations for A8 (from model year 2010 onwards)
- Transmission power levels and aerial fitting locations for Q5 (from model year 2008 onwards)
- Transmission power levels and aerial fitting locations for Q7 (from model year 2007 onwards)
- Transmission power levels and aerial fitting locations for R8 (from model year 2007 onwards)
- Transmission power levels and aerial fitting locations for R8 Spyder (from model year 2010 onwards)
- Transmission power levels and aerial fitting locations for TT (from model year 1999 up to model year 2006)
- Transmission power levels and aerial fitting locations for TT (from model year 2007 onwards)
- Transmission power levels and aerial fitting locations for A1 (from model year 2010 onwards)
- Transmission power levels and aerial fitting locations for A7 Sportback (from model year 2011 onwards)
Electrical system; General information107 pages
Starter-current supply-CC53 pages
Battery - general notes3 pages
Non maintenance-free batteries (without "magic eye")7 pages
Maintenance-free batteries10 pages
- Battery with "magic eye"
- Checking battery with "magic eye"
- Valve-regulated lead acid (VRLA) or absorbent glass mat (AGM) battery without "magic eye"
- Checking valve-regulated lead acid or AGM battery
- Central gas venting system
- Battery terminal screw connection
- Visual inspection of battery
- Checking colour indicator (electrolyte level in battery) - batteries with "magic eye"
- Checking electrolyte level in battery
Checking battery - vehicles without battery monitor control unitJ367 or energy management control unitJ6445 pages
- Checking battery using battery tester with printerVAS 6161
- Checking battery using battery tester with printerVAS 5097A
- Measuring no-load voltage - vehicles without battery monitor control unitJ367 or energy management control unitJ644
- Checking battery by measuring current draw - vehicles without battery monitor control unitJ367 or energy management control unit
Checking battery - vehicles with battery monitor control unitJ367 or energy management control unitJ644 and data bus diagnostic4 pages
- Checking battery using vehicle diagnostic tester
- Checking battery by measuring current draw - vehicles with battery monitor control unitJ367 or energy management control unitJ64
- Measuring no-load voltage - vehicles with battery monitor control unit J367 or energy management control unitJ644 "transpor
- Measuring no-load voltage - vehicles with battery monitor control unit J367 or energy management control unitJ644 "transpor
Charging battery6 pages
- Charging battery with battery chargerVAS 5095A, VAS 5900, VAS 5903, VAS 5904 or VAS 5906
- Totally discharged battery
- Rapid-charging battery - vehicles without battery monitor control unitJ367 or energy management control unitJ644
- Back-up power supply of battery via battery chargerVAS 5095A, VAS 5900, VAS 5903, VAS 5904 or VAS 5906
- Maintaining battery charge with solar panel VAS 6102 A
Checking and servicing alternator17 pages
- Checking alternator
- Bosch alternator up to 2000 - exploded view
- Bosch alternator from 2001 onwards - exploded view
- Removing and installing voltage regulator - Bosch alternator from 2001 onwards
- Bosch alternator from 2007 onwards - exploded view
- Removing and installing voltage regulator - Bosch alternator from 2007 onwards
- Checking carbon brushes - all types of Bosch alternators from 2001 onwards
- Valeo alternator up to 2000 - exploded view
- Valeo alternator from 2001 onwards - exploded view
- Removing and installing voltage regulator - Valeo alternator from 2001 onwards
- Checking carbon brushes - Valeo alternator from 2001 onwards
- Removing and installing voltage regulator - Valeo alternator from 2007 onwards
- Checking carbon brushes - Valeo alternator from 2007 onwards
- Removing and installing poly V-belt pulley without free-wheel
- Removing and installing poly V-belt pulley with free-wheel
- Checking poly V-belt pulley with free-wheel
- Cruise control system - vehicles with electronic throttle
Windscreen wipe/wash system › Washer fluid hoses4 pages
- Lights, lamps, switches outside › Safety precautions when handling gas discharge bulbs
Lights, lamps, switches inside, anti-theft system12 pages
Immobilizer for vehicles without entry and start authorisation switchE415 (mechanical ignition lock)5 pages
- Immobilizer for vehicles with entry and start authorisation switchE415 (electronic ignition lock)
- Heated steering wheel
Wiring37 pages
Repairing wiring harnesses and electrical connectors11 pages
- General information on repairs to the vehicle electrical system
- ESD (electrostatic discharge) workplace VAS 6613
- Notes on repairing wiring harnesses and electrical connectors
- Repairing wiring for pyrotechnic components
- Repairing CAN bus wiring
- Repairing FlexRay wiring
- Repairing a 0.25 mm2 wire with a single crimp connector
- Repairing a wire of 0.35 mm2 section or thicker with a single crimp connector
- Repairing an 0.25 mm2 wire by connecting in an additional wire
- Repairing a wire of 0.35 mm2 section or thicker by connecting in an additional wire
Repairing connector housings and electrical connectors5 pages
Releasing and dismantling connector housings7 pages
Cleaning contact surfaces with contact surface cleaning setVAS 64105 pages
- Repairing aerial wires
Vehicle diagnostic, testing and information systems3 pages