A2: Vehicle electrics
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 system159 pages
Starter-current supply-CC23 pages
- Contact corrosion
Removing and installing alternator5 pages
Removing and installing starter4 pages
- Cruise control system (CCS)
Instruments, GCI › Dash panel insert11 pages
- Fault message “deft” on trip recorder display
- Removing and installing dash panel insert
- Multi-pin connectors at dash panel insert
- Assignment of contacts at multi-pin connectors at dash panel insert
- Terminal assignment on fuel gauge sender G
Connection assignment at coolant temperature gauge sender G2 / coolant temperature sender G625 pages
- Unplugging connector at coolant temperature gauge sender G2 / coolant temperature sender G62 - vehicles with 1.4 l MPI engine
- Unplugging connector at coolant temperature gauge sender G2 / coolant temperature sender G62 - vehicles with 1.6 l FSI engine
- Unplugging connector at coolant temperature gauge sender G2 / coolant temperature sender G62 - vehicles with 1.2 l TDI engine
- Unplugging connector at coolant temperature gauge sender G2 / coolant temperature sender G62 - vehicles with 1.4 l TDI engine
Windscreen wipe/wash system23 pages
- Contact corrosion
Windscreen wiper system8 pages
- Windscreen wiper system - exploded view
- Replacing wiper blade - vehicles up to Model Year 2001
- Replacing wiper blade - vehicles as of Model Year 2002
- Eliminating wiper judder - vehicles up to Model Year 2001
- Removing and installing wiper arm
- Adjusting wiper arm
- Removing and installing wiper motor with wiper frame
Windscreen washer system9 pages
- Removing and installing filler neck with flexible pipe for washer fluid container
- Removing and installing washer fluid reservoir - vehicles with 1.2 l TDI engine
- Removing and installing washer fluid reservoir - vehicles without headlight washer system
- Removing and installing washer fluid reservoir - vehicles with headlight washer system
- Removing and installing spray jets - vehicles up to Model Year 2002
- Removing and installing spray jets - vehicles as of Model Year 2003
- Adjusting spray jets - vehicles up to Model Year 2002
- Adjusting spray jets - vehicles as of Model Year 2003
- Washer fluid hoses
Lights, lamps, switches outside45 pages
- Contact corrosion
Headlights15 pages
- Headlights - exploded view
- Removing and installing headlights
- Aligning headlight to body contours (gap widths)
- Adjusting headlights
- Replacing dipped beam bulb
- Replacing main beam bulb
- Replacing side light bulb
- Replacing turn signal bulb
- Removing and installing headlight range control motor V48 / V49
- Installing repair set for headlight housing
- Resetting headlights for driving on the left instead of on the right
- Resetting headlights for driving on the right instead of on the left
Steering column switch6 pages
- Steering column switch - exploded view
- Removing and installing steering column switch
- Removing and installing coil connector with slip ring and steering angle sender G85
- Removing and installing lever switch for windscreen wipe/wash, FIS, turn signals/lights, CCS
- Connection assignment at steering column switch
Lock cylinder and ignition/starter switch4 pages
Lights, lamps, switches inside, anti-theft system38 pages
- Contact corrosion
Switches19 pages
- Removing and installing light switch E1
- Removing and installing switches and instruments illumination regulator E20 / headlight range control regulator E102
- Removing and installing hazard warning switch E3
- Removing and installing front seat heating switches
- Removing and installing switches in centre console
- Removing and installing glove box light switch E26
- Removing and installing function selection switch 2 E272
- Removing and installing mirror adjustment switch E43
- Removing and installing switch unit with window lifter switches E40 , E39 , E41 , E53 and E55
- Removing and installing window regulator switch in front passenger door E107
- Removing and installing rear left/rear right window regulator switch in door E52 / E54
- Removing and installing tank filler flap remote release switch E204
- Removing and installing interior monitoring deactivation switch E183
- Removing and installing sun roof switch E8
- Removing and installing door contact switch
- Removing and installing driver side interior locking switch E150 (central locking switch)
- Removing and installing rear lid contact switch with integrated microswitch
- Removing and installing 12 V socket in luggage compartment
- Immobilizer
Ultrasonic interior monitoring3 pages
Interior lights10 pages
- Removing and installing light for vanity mirror
- Removing and installing front interior/reading light
- Replacing bulb for front interior light
- Replacing bulbs for front reading lights
- Removing and installing front passenger side airbag deactivated warning lamp K145
- Removing and installing rear interior/reading light
- Replacing bulb for rear interior light/reading light
- Removing and installing glove box light
- Removing and installing luggage compartment light
Wiring19 pages
- Contact corrosion
Relay carriers, fuse carriers13 pages
- Relay carriers, fuse carriers - overview
- Removing and installing fuse carrier on 9-socket relay carrier
- Removing and installing 9-socket relay carrier
- Removing and installing left A-pillar connection point
- Unplugging left door disconnectors
- Removing and installing hazard warning light relay J2
- Removing and installing 6+6-socket relay carrier
- Removing and installing 3-socket relay carrier
- Removing and installing convenience system central control unit J393
- Removing and installing right A-pillar connection point
- Unplugging right door disconnectors
- Removing and installing main fuse carrier
- Repairing wiring harnesses and electrical connectors
- Repairing connector housings and electrical connectors
- Releasing and dismantling connector housings
- Repairing aerial wires
- Vehicle diagnostic, testing and information systems
Radio, Telephone and Navigation System, Self-diagnosis › Self diagnosis, V.A.G Inspection Service286 pages
Radio system self-diagnosis36 pages
Starting self-diagnosis3 pages
- Interrogating control unit version
- Interrogating fault memory
- Fault table
- Erasing fault memory
- End of output
- Final control diagnosis
Reading measured value block13 pages
- List of display groups up to MY 01
- List of display groups as of MY 02
- Measured value block 001 up to MY 01
- Measured value block 001 as of MY 02
- Measured value block 002 up to MY 01
- Measured value block 002 as of MY 02
- Measured value block 003
- Measured value block 004 up to MY 01
- Measured value block 004 as of MY 02
- Measured value block 005 up to MY 01
- Measured value block 005 as of MY 02
- Measured value block 006 up to MY 01
Adaption7 pages
- Adaption table
- External tuner adaption (digital radio) - Adaption channel 55
- Deactivating/activating GALA function - Adaption channel 66
- Deactivating/activating vehicle speed display - Adaption channel 77
- Activating/deactivating long wave reception - Adaption channel 88
- Activating/deactivating transportation mode - Adaption channel 99
Telephone self-diagnosis26 pages
Self-diagnosis of pre-fitted components for mobile phone installation36 pages
Starting self-diagnosis3 pages
- Interrogating fault memory
- Fault table
- Erasing fault memory
- End of output
- Final control diagnosis
Reading measured value block12 pages
Adaption10 pages
- Adaption table
- Setting of basic volume - Adaption channel 128
- Setting of run-on time - Adaption channel 129
- Setting of delay time/reference channel - Adaption channel 130
- Setting of microphone sensitivity - Adaption channel 131
- Activating/deactivating Bluetooth module - Adaption channel 133
- Bluetooth hands-free function without/with mobile phone in holder - Adaption channel 134
- Setting of Bluetooth pass key - Adaption channel 135
- Setting of beep delay value - Adaption channel 136
Self-diagnosis of navigation system II-D37 pages
- Fault messages on navigation system display
Starting self-diagnosis3 pages
- Interrogating control unit version
- Interrogating fault memory
- Fault table
- Erasing fault memory
- End of output
- Final control diagnosis
Adaption12 pages
- Adaption table
- Change of tyre size - Adaption channel 01
- Change to number of pulses per wheel revolution - Adaption channel 02
- Disabling/enabling production diagnosis - Adaption channel 03
- Setting dash panel insert display - Adaption channel 04
- Setting country identification - Adaption channel 05
- Setting telematics system - Adaption channel 06
- Setting electronic logbook - Adaption channel 07
- Adapting CAN bus users - Adaption channel 07
- Front passive loudspeaker diagnosis - Adaption channel 09
- Deactivating/activating transportation mode - Adaption channel 99
Self-diagnosis of Navigation System III34 pages
Starting self-diagnosis3 pages
- Interrogating control unit version
- Interrogating fault memory
- Fault table
- Erasing fault memory
- End of output
- Final control diagnosis
Adaption8 pages
- Adaption table
- Change of tyre size - Adaption channel 01
- Change to number of pulses per wheel revolution - Adaption channel 02
- Tyre table for Audi A2:
- Disabling/enabling production diagnosis - Adaption channel 03
- Setting loudspeaker connection - Adaption channel 004
- Setting country identification - Adaption channel 005
Self-diagnosis of navigation system Nav IV (BNS 4.0)36 pages
Starting self-diagnosis3 pages
- Interrogating control unit version
- Interrogating fault memory
- Fault table
- Erasing fault memory
- End of output
- Final control diagnosis
Adaption10 pages
- Adaption table
- Change of tyre size - Adaption channel 01
- Change to number of pulses per wheel revolution - Adaption channel 02
- Disabling/enabling production diagnosis - Adaption channel 03
- Setting loudspeaker connection - Adaption channel 04
- Setting country identification - Adaption channel 05
- Setting dynamic navigation - Adaption channel 06
- Setting electronic logbook - Adaption channel 07
- Deactivating/activating GALA function - Adaption channel 66
Self-diagnosis of TV tuner22 pages
Multi-function steering wheel self-diagnosis21 pages
Starting self-diagnosis3 pages
- Interrogating control unit version
- Interrogating fault memory
- Fault table
- Erasing fault memory
- End of output
- Final control diagnosis
Reading measured value block4 pages
Telematics self-diagnosis35 pages
- Notes on system release
Starting self-diagnosis3 pages
- Interrogating control unit version
- Interrogating fault memory
- Fault table
- Erasing fault memory
- End of output
- Final control diagnosis
Adaption8 pages
- Adaption table
- Change of tyre size - Adaption channel 01
- Change to number of pulses per wheel revolution - Adaption channel 02
- Deactivating/activating service mode - Adaption channel 03
- Aerial test selection - Adaption channel 05
- Aerial selection - Adaption channel 06
- System selection - Adaption channel 07
Connecting up vehicle diagnostic, testing and information system VAS 5051 or fault reader V.A.G 15513 pages
Radio, telephone and navigation system › Infotainment146 pages
Radio systems47 pages
General information and description5 pages
Block diagram of radio systems8 pages
- “chorus” radio system (4 loudspeakers)
- “chorus” radio system (8 loudspeakers)
- “concert” radio system
- “concert” radio system with BOSE sound system
- “symphony” and (as of MY 02) “concert” radio system
- “symphony” and (as of MY 02) “concert” radio system with BOSE sound system
- Pre-fitted components for radio installation
- Connector at BOSE amplifier
- Connector at amplifier
- Connector at CD changer
- Connectors at aerial selection control unit J515
- Aerial connection points on tailgate window
Removing and installing radio3 pages
Removing and installing CD changer R413 pages
- Removing and installing amplifier
- Removing and installing BOSE amplifier
- Removing and installing aerial amplifier
- Removing and installing aerial selection control unit J515
Telephone systems23 pages
- General information and description
Overall layout of telephone systems3 pages
- Removing and installing cradle holder
- Removing and installing mobile telephone operating electronics control unit J412 (up to MY 03)
- Removing and installing mobile telephone operating electronics control unit J412 (as of MY 04)
- Removing and installing aerial amplifier, mobile telephone R86
- Removing and installing telephone/telematics control unit J526 (telephone operation only)
- Removing and installing telephone microphone R38
- Removing and installing telephone/navigation systems loudspeaker R39
- Removing and installing telephone aerial R65
- Removing and installing telephone aerial R65 (glass roof panel)
Navigation System II-D (Navigation System Plus) RNS 4.123 pages
General information and description4 pages
- Fault message display
Connectors at operating electronics control unit, navigation J4022 pages
- Connectors at navigation interface R94
- Connectors at aerial selection control unit J515
- Overall layout of navigation system II-D
- Removing and installing operating electronics control unit, navigation J402
- Removing and installing TV tuner J415
- Removing and installing TV aerial amplifiers
- Removing and installing navigation interface R94
- Removing and installing navigation aerial (GPS) R50
Navigation system III11 pages
- Block diagram of navigation system III
Connectors at navigation system with CD drive control unit J4012 pages
- Overall layout of navigation system III
- Removing and installing function selection switch E272
- Removing and installing navigation aerial (GPS) R50
- Removing and installing navigation system with CD drive control unit J401
Navigation system Nav IV (BNS 4.0)7 pages
Multi-function steering wheel14 pages
- Overall layout of multi-function steering wheel
Assignment of buttons on multi-function steering wheels6 pages
- Removing and installing multi-function buttons
- Removing and installing tiptronic buttons
- Removing and installing multi-function steering wheel control unit J453
Telematics system21 pages
- Block diagram of telematics system
Connectors at telephone/telematics control unit J5262 pages
- Overall layout of telematics system
Removing and installing telephone/telematics control unit J526 (telematics system operation)2 pages
- Telematics SIM card replacement
- Initialising telephone/telematics control unit J526
- Removing and installing emergency call button E276 and breakdown help button E275
- Removing and installing hands-free microphone
- Removing and installing emergency battery for telematics
- Removing and installing additional aerial for telematics R90 (emergency aerial)
- Removing and installing additional loudspeaker for telematics R91 (emergency loudspeaker)
- Removing and installing aerial filter R87 (GPS aerial)
Electrical system, self-diagnosis › Self diagnosis, V.A.G Inspection Service45 pages
Dash panel insert self-diagnosis15 pages
- General
- Starting dash panel insert self-diagnosis
- Safety precautions
- Interrogating fault memory
- Dash panel insert fault table
- Final control diagnosis
- Erasing fault memory
- End of output
- Encoding control unit
- Reading measured value block
- Adaption
- Values to be entered on replacing dash panel insert
- Resetting of service display without V.A.G 1551/1552 following service
- Checking exchange of data between control units
Immobilizer self-diagnosis - immobilizer III17 pages
- General
- Starting immobilizer self-diagnosis
- Safety precautions
- Interrogating control unit version
- Interrogating fault memory
- Immobilizer fault table:
- Erasing fault memory
- End of output
- Reading measured value block
- Adaption
- Matching of vehicle keys
- Procedure in the event of loss of keys
- Adaption following replacement of dash panel insert
- Adaption following replacement of engine control unit
- Adaption following replacement of dash panel insert and engine control unit
- Login procedure
- Connecting vehicle diagnostic, testing and information system VAS 5051/fault reader V.A.G 1551 and selecting functions
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 „transport mod
- Measuring no-load voltage - vehicles with battery monitor control unit J367 or energy management control unitJ644 „transport mod
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