| D | Ignition/starter switch |
| E1 | Lighting switch |
| E15 | Heated rear window switch |
| E87 | Control and display unit for air conditioner |
| G183 | Glass breakage sensor, rear left side window |
| S3 | Fuse in fuse box |
| S4 | Fuse in fuse box |
| S5 | Fuse in fuse box |
| S225 | Fuse in fuse box |
| S226 | Fuse in fuse box |
| T6e | 6-pin connector, blue, left connector point, A pillar |
| T8f | 8-pin connector, brown, in luggage compartment, rear left |
| T10ai | 10-pin connector, purple, left connector point, A pillar |
| X | Number plate light |
| Z1 | Heated rear window |
| 218 | Earth connection -1-, in tailgate/boot lid wiring harness |
| A2 | Positive (+) connection (15), in dash panel wiring harness |
| A3 | Positive (+) connection (58), in dash panel wiring harness |
| A37 | Connection (58a), in dash panel wiring harness |
| A65 | Connection (75a, digital air conditioner), in dash panel wiring harness |
| A74 | Connection (15a, fuse 5), in dash panel wiring harness |
| * | Applies to Audi Avant models only |
| ** | Applies to Audi saloons only |
| E87 | Control and display unit for air conditioner |
| F129 | Air conditioner pressure switch |
| J126 | Fresh air blower control unit |
| T14a | 14-pin connector, black, in engine compartment |
| T17a | 17-pin connector, brown, left connector point, A pillar |
| V2 | Fresh air blower |
| 135 | Earth connection -2-, in dash panel wiring harness |
| A65 | Connection (75a, digital air conditioner), in dash panel wiring harness |
| * | Applies to all 4-cylinder petrol engines |
| ** | Applies to 2.7 litre Motronic |
| *** | Applies to 2.8 litre Motronic (cooling system 8Z6) |
| # | Applies to 2.8 litre Motronic (cooling system 8Z5) |
| ## | Applies to all 1.9 litre diesel engines |
| ### | Applies to all 2.5 litre diesel engines |
| E87 | Control and display unit for air conditioner |
| J218 | Combi-processor in dash panel insert |
| T32 | 32-pin connector, blue, on dash panel insert |
| T32a | 32-pin connector, green, on dash panel insert |
| 81 | Earth connection -1-, in dash panel wiring harness |
| A4 | Positive (+) connection (58b), in dash panel wiring harness |
| A19 | Connection (58d), in dash panel wiring harness |
| A45 | Connection (engine speed signal), in dash panel wiring harness |
| A60 | Connection (vehicle speed signal), in dash panel wiring harness |
| A76 | Connection (diagnosis wire K), in dash panel wiring harness |
| A79 | Connection (hot light switch), in dash panel wiring harness |
| A91 | Connection (signal for dash panel insert), in dash panel wiring harness |
| * | Output for illumination |
| ** | Only models with multi-function display (input for temperature indicator) |
| E87 | Control and display unit for air conditioner |
| G92 | Control motor potentiometer, temperature flap |
| G112 | Control motor potentiometer, central flap |
| G113 | Control motor potentiometer, air flow flap |
| G114 | Control motor potentiometer, footwell/defroster flap |
| T15m | 15-pin connector, red, connector point, electronics box, plenum chamber |
| V68 | Temperature flap control motor |
| V70 | Central flap control motor |
| V71 | Air flow flap control motor |
| V85 | Footwell/defroster flap control motor |
| A58 | Connection (5 volt), in dash panel wiring harness |
| A67 | Connection (normal earth, digital air conditioner), in dash panel wiring harness |
| A100 | Connection -2- (87), in dash panel wiring harness |
| A105 | Connection -2- (rpm boost), in dash panel wiring harness |
| * | See applicable engine version |
| ** | Does not apply to 6-cylinder engines |
| *** | Air conditioner compressor switched on |
| E22 | Intermittent wiper switch |
| E87 | Control and display unit for air conditioner/Climatronic |
| G17 | Ambient temperature sensor |
| G89 | Fresh air intake duct temperature sensor |
| G107 | Sunlight penetration photosensor |
| G191 | Vent temperature sender, centre |
| G192 | Vent temperature sender, footwell |
| J44 | Magnetic coupling relay |
| N25 | Air conditioning system magnetic coupling |
| T1d | Single connector, green, in engine compartment, near compressor |
| T1s | Single connector, green, in engine compartment |
| T14a | 14-pin connector, black, in engine compartment |
| T17a | 17-pin connector, brown, left connector point, A pillar |
| A67 | Connection (31, air conditioner), in dash panel wiring harness |
| A97 | Connection (53), in dash panel wiring harness |
| * | Applies to 4-cylinder engines only |
| ** | Fit at any vacant relay point |
| F18 | Radiator fan thermo-switch |
| F54 | Radiator fan thermo-switch |
| F129 | Air conditioner pressure switch |
| J26 | Radiator fan relay |
| J101 | Radiator fan 2nd speed relay |
| N39 | Radiator fan series resistor |
| S42 | Radiator fan single fuse |
| S51 | Fuse |
| T14a | 14-pin connector, black, in engine compartment |
| T17a | 17-pin connector, brown, left connector point, A pillar |
| V7 | Radiator fan (suction fan) |
| 44 | Earth point, lower part of left A pillar |
| 83 | Earth connection -1-, in front right wiring harness |
| 127 | Earth connection -1-, in air conditioner compressor wiring harness |
| C24 | Connection (radiator fan speed II), in headlight/air conditioner wiring harness |
| C | Alternator |
| F18 | Radiator fan thermo-switch |
| F54 | Radiator fan thermo-switch |
| F95 | Thermo-switch for continued circulation of coolant |
| F129 | Air conditioner pressure switch |
| J293 | Radiator fan control unit |
| S42 | Radiator fan single fuse |
| T2ad | 2-pin connector, on radiator fan control unit |
| T10m | 10-pin connector, black, connector point, electronics box, plenum chamber |
| T10ar | 10-pin connector, orange, connector point, electronics box, plenum chamber |
| T14a | 14-pin connector, black, in engine compartment |
| T17a | 17-pin connector, brown, left connector point, A pillar |
| V7 | Radiator fan (suction fan) |
| V51 | Continued circulation of coolant pump |
| V177 | Radiator fan -2- |
| 12 | Earth point, in engine compartment, left |
| 44 | Earth point, lower part of left A pillar |
| 83 | Earth connection -1-, in front right wiring harness |
| 85 | Earth connection -1-, in engine compartment wiring harness |
| A17 | Connection (61), in dash panel wiring harness |
| C23 | Connection (radiator fan speed I), in headlight/air conditioner wiring harness |
| C | Alternator |
| F18 | Radiator fan thermo-switch |
| F54 | Radiator fan thermo-switch |
| F129 | Air conditioner pressure switch |
| J293 | Radiator fan control unit |
| S42 | Radiator fan single fuse |
| T2ad | 2-pin connector, on radiator fan control unit |
| T10m | 10-pin connector, black, connector point, electronics box, plenum chamber |
| T14a | 14-pin connector, black, in engine compartment |
| T17a | 17-pin connector, brown, left connector point, A pillar |
| V7 | Radiator fan (suction fan) |
| V51 | Continued circulation of coolant pump |
| 44 | Earth point, lower part of left A pillar |
| 83 | Earth connection -1-, in front right wiring harness |
| A17 | Connection (61), in dash panel wiring harness |
| C23 | Connection (radiator fan speed I), in headlight/air conditioner wiring harness |
| C24 | Connection (radiator fan speed II), in headlight/air conditioner wiring harness |
| F18 | Radiator fan thermo-switch |
| F54 | Radiator fan thermo-switch |
| F129 | Air conditioner pressure switch |
| J26 | Radiator fan relay |
| J101 | Radiator fan 2nd speed relay |
| N39 | Radiator fan series resistor |
| S42 | Radiator fan single fuse |
| S51 | Fuse |
| T14a | 14-pin connector, black, in engine compartment |
| T17a | 17-pin connector, brown, left connector point, A pillar |
| V7 | Radiator fan (suction fan) |
| 44 | Earth point, lower part of left A pillar |
| 83 | Earth connection -1-, in front right wiring harness |
| C24 | Connection (radiator fan speed II), in headlight/air conditioner wiring harness |
| F18 | Radiator fan thermo-switch |
| F54 | Radiator fan thermo-switch |
| F129 | Air conditioner pressure switch |
| J26 | Radiator fan relay |
| J101 | Radiator fan 2nd speed relay |
| J248 | Diesel direct injection system control unit |
| J397 | Radiator fan run-on relay |
| N39 | Radiator fan series resistor |
| S42 | Radiator fan single fuse |
| S51 | Fuse |
| T10ar | 10-pin connector, orange, connector point, electronics box, plenum chamber |
| T14a | 14-pin connector, black, in engine compartment |
| T17a | 17-pin connector, brown, left connector point, A pillar |
| V7 | Radiator fan (suction fan) |
| 44 | Earth point, lower part of left A pillar |
| 83 | Earth connection -1-, in front right wiring harness |
| 127 | Earth connection -1-, in air conditioner compressor wiring harness |
| A71 | Connection (86), in dash panel wiring harness |
| C24 | Connection (radiator fan speed II), in headlight/air conditioner wiring harness |
| D103 | Connection -3-, in engine compartment wiring harness |
| * | See applicable engine version |
| F18 | Radiator fan thermo-switch |
| F54 | Radiator fan thermo-switch |
| F129 | Air conditioner pressure switch |
| J26 | Radiator fan relay |
| J101 | Radiator fan 2nd speed relay |
| J248 | Diesel direct injection system control unit |
| J397 | Radiator fan run-on relay |
| N39 | Radiator fan series resistor |
| S42 | Radiator fan single fuse |
| S51 | Fuse |
| T10ar | 10-pin connector, orange, connector point, electronics box, plenum chamber |
| T14a | 14-pin connector, black, in engine compartment |
| T17a | 17-pin connector, brown, left connector point, A pillar |
| V7 | Radiator fan (suction fan) |
| 44 | Earth point, lower part of left A pillar |
| 83 | Earth connection -1-, in front right wiring harness |
| A71 | Connection (86), in dash panel wiring harness |
| C24 | Connection (radiator fan speed II), in headlight/air conditioner wiring harness |
| D103 | Connection -3-, in engine compartment wiring harness |
| * | See applicable engine version |
