2004 AUDI A8

Audi A8 L Quattro 2004 - BUZZERS, RELAYS & TIMERS

Audi A8 L Quattro 2004 BUZZERS, RELAYS & TIMERS LOCATION

Component	Location
Battery Switch-Off Relay	In luggage compartment, in front of battery.
Compressor Level Control System Relay (1)	On relay & fuse panel at left side of dash. See Fig. 2 .
Fuel Pump Relay (4)	On right front kick panel relay panel. See Fig. 3 .
Fuel Pump 2 Relay (3)	On relay & fuse panel, at right side of luggage compartment. See Fig. 4 .
Headlamp Cleaning System Relay	In relay carrier in front right kick panel.
Horn Relay	Behind left side of dash.
Motronic Engine Control Module (ECM) Power Supply Relay 3	On plenum chamber E-box relay panel. See Fig. 1 .
Motronic Engine Control Module Power Supply Relay (2)	On plenum chamber E-box relay panel. See Fig. 1 .
Parking Warning Buzzer	Under right side of rear shelf.
Power Supply Relay 1 (Terminal 75)	On relay & fuse panel at left side of dash. See Fig. 2 .
Rear Window Defogger Relay	In relay & fuse panel, right side of luggage compartment.
Secondary Air Injection Pump Relay (1)	On plenum chamber E-box relay panel. See Fig. 1 .
Starter Relay (2)	On right front kick panel relay panel. See Fig. 3 .
Starter Relay 2 (3)	On right front kick panel relay panel. See Fig. 3 .
Voltage Supply Terminal 15 (B+) Relay (3)	On relay & fuse panel at left side of dash. See Fig. 2 .
Windshield Washer Fluid Heating Relay	In relay carrier in front right kick panel.

Audi A8 L Quattro 2004 - CIRCUIT PROTECTION DEVICES

Audi A8 L Quattro 2004 CIRCUIT PROTECTION DEVICES LOCATION

Component	Location
Fuse Panel (Instrument Panel) (Left)	Behind left side of dash.
Fuse Panel (Instrument Panel) (Right)	Behind right side of dash.
Fuse Panel (Luggage Compartment) (Left)	Left side of luggage compartment.
Main Fuse Panel (Right Kick Panel)	Behind upper right kick panel.
Power (Memory) Seat Circuit Breaker No. 1 (D)	On relay & fuse panel at left side of dash. See Fig. 2 .
Power (Memory) Seat Circuit Breaker No. 2 (E)	On relay & fuse panel at left side of dash. See Fig. 2 .
Relay & Fuse Panel (Instrument Panel) (Left)	Behind left side of dash.
Relay & Fuse Panel (Luggage Compartment) (Right)	At right side of luggage compartment.
Relay Panel (Plenum Chamber E-Box)	In plenum chamber E-box.
Relay Panel, (Right Kick Panel)	At right front kick panel.

Audi A8 L Quattro 2004 - CONTROL UNITS

Audi A8 L Quattro 2004 CONTROL UNITS LOCATION

Component	Location
ABS Control Module (W/EDL)	At left side of engine compartment.
Access/Start Control Module	Under driver's seat.
Air Bag Control Module	Below center of dash, on transmission tunnel.
Battery Monitoring Control Module	Right side of luggage compartment.
Central Control Module (Comfort System)	In luggage compartment, behind battery.
Climatronic Control Module	Front of center console.
Data Bus On Board Diagnostic Interface	Behind glove compartment.
Door Control Module (Driver Side)	Integrated in driver's door window regulator motor.
Door Control Module (Left Rear)	Integrated in left rear door window regulator motor.
Door Control Module (Passenger Side )	Integrated in right front door window regulator motor.
Door Control Module (Right Rear)	Integrated in right rear door window regulator motor.
Electronic Parking Brake Control Module	Right side of luggage compartment, under battery.
Energy Management Control Module	At left side of luggage compartment, behind side trim.
Engine Control Module	On passenger's side plenum chamber E-box.
Fresh Air Blower Control Module	At right rear of engine compartment, next to fresh air blower motor.
Front Information Display Control Head Control Module	Behind glove compartment.
Garage Door Opener Control Module	Behind right front bumper.
Headlight Beam Adjusting Control Module	Behind instrument cluster.
Headlight Range Control Module	Behind instrument cluster.
High Intensity Gas Discharge Lamp Control Module (Left/Right)	Behind respective headlight assembly.
Inclination-/Anti-Theft Control Module	Under right side of rear seat.
Level Control System Control Module	Behind glove compartment.
Multifunction Steering Wheel Control Module	In steering wheel.
Navigation Control Module W/CD	Left side of trunk, behind trim.
Parking Aid Control Module	Below CD changer unit on left side of luggage compartment.
Rear Lid Control Module	Right rear of luggage compartment.
Rear Lid Tail Light Control Module (Left)	In left rear lid taillight.
Rear Lid Tail Light Control Module (Right)	In right rear lid taillight.
Rear Tail Light Control Module (Left)	In left taillight.
Rear Tail Light Control Module (Right)	In right taillight.
Roof Electronics Control Module	Under front of roof module.
Solar Operation Control Module	On underside of solar roof.
Steering Column Electronic Systems Control Module	On steering column, behind steering wheel.
Sunroof Regulator	In front of roof module.
Throttle Valve Control Module	Behind intake manifold, on throttle valve housing.
Tire Pressure Monitoring Control Module	Under left side of rear seat.
Transmission Control Module	In transmission, at valve body.
Vehicle Electrical System Control Module	Behind left side of dash.
Vehicle Electrical System Control Module No. 2	Under front passenger's seat.
Wiper Motor Control Module	On wiper motor.

Audi A8 L Quattro 2004 - MOTORS

Audi A8 L Quattro 2004 MOTORS LOCATION

Component	Location
Belt Height Adjustment Motor	At left "B" pillar.
Compressor-Level Control System Motor	In left front wheelwell.
Coolant Fan	Right front of engine compartment.
Coolant Fan No. 2	Left front of engine compartment.
Headlight Beam Adjusting Motor (Left)	In left headlight.
Headlight Beam Adjusting Motor (Right)	In right headlight.
Leak Detection Pump	In left rear wheelwell.
Left Headlight Washer Jet Motor	Behind left front bumper.
Open-Close Display Motor	Behind center of dash.
Parking Brake Motor (Left)	At left rear brake caliper.
Parking Brake Motor (Right)	At right rear brake caliper.
Rear Lid Opening Motor	Right side of luggage compartment.
Rear Window Shade Motor	Below center of rear parcel shelf.
Right Headlight Washer Jet Motor	Behind right front bumper.
Secondary Air Injection Pump Motor	Between right front bumper & wheelwell liner.
Steering Column Adjustment Motor (Axial)	On right side of steering column.
Steering Column Adjustment Motor (Vertical)	On left side of steering column.
Sunroof Motor	Under rear of roof module.

Audi A8 L Quattro 2004 - SENDING UNITS & SENSORS

Audi A8 L Quattro 2004 SENDING UNITS & SENSORS LOCATION

Component	Location
Accelerator Pedal Position Sender No. 2	At accelerator pedal.
Body Acceleration Sensor (Left Front)	On left front strut tower.
Body Acceleration Sensor (Rear)	Behind right rear wheelwell liner.
Body Acceleration Sensor (Right Front)	On right front strut tower.
Brake Booster Sender No. 1	On ABS-hydraulic control unit.
Front Airbag Crash Sensor (Driver's Side)	Left front of engine compartment.
Front Airbag Crash Sensor (Passenger's Side)	Right front of engine compartment.
Fuel Gauge Sender	Inside left side of fuel tank.
Fuel Level Sensor No. 2	Inside right side of fuel tank.
Fuel Supply Sensor No. 3	Inside left side of fuel tank.
Fuel Supply Sensor No. 4	Inside right side of fuel tank.
Heated Steering Wheel Sensor	In steering wheel.
Humidity Sensor	Top of windshield, in rearview mirror assembly.
Level Control Pressure Sensor	Behind left wheelwell liner at "A" pillar.
Level Control System Sensor (Left Front)	At left side of front axle.
Level Control System Sensor (Left Rear)	At left side of rear axle.
Level Control System Sensor (Right Front)	At right side of front axle.
Level Control System Sensor (Right Rear)	At right side of rear axle.
Light Recognition Sensor	Top of windshield, in rearview mirror assembly.
Oil Level Thermal Sensor	Bottom of engine oil pan.
Outside Air Temperature Sensor	Behind right side of front bumper.
Parking Sensor (Left Rear)	Behind left side of rear bumper.
Parking Sensor (Left Rear Center)	Behind left center of rear bumper.
Parking Sensor (Right Rear )	Behind right side of rear bumper.
Parking Sensor (Right Rear Center)	Behind right center of rear bumper.
Rotation Rate Sender	On front tunnel, under extension of center console.
Side Air Bag Crash Sensor (Driver's Side)	At left "B" pillar.
Side Airbag Crash Sensor (Left Rear)	At bottom of left "C" pillar.
Side Air Bag Crash Sensor (Passenger's Side)	At right "B" pillar.
Side Airbag Crash Sensor (Right Rear)	At bottom of right "C" pillar.
Steering Angle Sensor	Behind steering wheel.
Steering Column Axial Adjustment Sensor	On steering column.
Steering Column Vertical Adjustment Sensor	On steering column.
Sunlight Photo Sensor	On top center of middle defrost vent, at top of dash.
Throttle Position Sensor	On accelerator pedal.
Tire Pressure Sensor (Left Front)	On left front wheel rim.
Tire Pressure Sensor (Left Rear)	On left rear wheel rim.
Tire Pressure Sensor (Right Front)	On right front wheel rim.
Tire Pressure Sensor (Right Rear)	On right rear wheel rim.
Tire Pressure Sensor (Spare Tire)	On spare tire wheel rim.

Audi A8 L Quattro 2004 - SOLENOIDS & SOLENOID VALVES

Audi A8 L Quattro 2004 SOLENOIDS & SOLENOID VALVES LOCATION

Component	Location
Cylinder 1 Fuel Injector	On engine.
Cylinder 2 Fuel Injector	On engine.
Cylinder 3 Fuel Injector	On engine.
Cylinder 4 Fuel Injector	On engine.
Cylinder 5 Fuel Injector	On engine.
Cylinder 6 Fuel Injector	On engine.
Cylinder 7 Fuel Injector	On engine.
Cylinder 8 Fuel Injector	On engine.
Dampening Adjustment Valve (Left Front)	Behind left front wheelwell liner, at "A" pillar.
Dampening Adjustment Valve (Left Rear)	Behind left front wheelwell liner, at "A" pillar.
Dampening Adjustment Valve (Right Front)	Behind right front wheelwell liner, at "A" pillar.
Dampening Adjustment Valve (Right Rear)	Behind right front wheelwell liner, at "A" pillar.
Left Electro-Hydraulic Engine Mount Solenoid Valve	Left side of engine compartment.
Level Control Accumulator Valve	Behind left wheelwell liner at "A" pillar.
Right Electro-Hydraulic Engine Mount Solenoid Valve	Right side of engine compartment.
Servotronic Solenoid Valve	On steering gear housing.
Steering Column Lock Actuator	Bottom of steering column.

Audi A8 L Quattro 2004 - SWITCHES

Audi A8 L Quattro 2004 SWITCHES LOCATION

Component	Location
Display Closed Stop Switch	Behind center of dash.
Display Open Stop Switch	Behind center of dash.
Kick Down Switch	Under accelerator pedal.

Audi A8 L Quattro 2004 - MISCELLANEOUS

Audi A8 L Quattro 2004 MISCELLANEOUS LOCATION

Component	Location
Airbag Spiral Spring/Return Spring With Slip Ring	Behind steering wheel.
Data Bus On Board Diagnostic Interface	Behind glove compartment.
Data Link Connector	Under left side of dash.
Headlight Power Output Stage (Left)	On rear of left headlight housing.
Headlight Power Output Stage (Right)	On rear of right headlight housing.
Ignition Coil 1 With Power Output Stage	Top of engine.
Ignition Coil 2 With Power Output Stage	Top of engine.
Ignition Coil 3 With Power Output Stage	Top of engine.
Ignition Coil 4 With Power Output Stage	Top of engine.
Ignition Coil 5 With Power Output Stage	Top of engine.
Ignition Coil 6 With Power Output Stage	Top of engine.
Ignition Coil 7 With Power Output Stage	Top of engine.
Ignition Coil 8 With Power Output Stage	Top of engine.

Audi A8 L Quattro 2004 - CONNECTORS

Audi A8 L Quattro 2004 CONNECTORS LOCATION

Component	Location
T3D (Yellow, 3 Pin)	Under driver's seat.
T3E (Yellow, 3 Pin)	Under front passenger's seat.
T3F (Orange, 3 Pin)	Under left side of rear seat.
T3G (Orange, 3 Pin)	Under right side of rear seat.
T3H (Black, 3 Pin)	Behind glove compartment.
T3I (Yellow, 3 Pin)	At left "D" pillar.
T3M (Yellow, 3 Pin)	At right "D" pillar.
T4A (4 Pin)	Under right rear seat.
T4I (4 Pin)	Under driver's seat.
T4M (4 Pin)	Under front passenger's seat.
T4P (4 Pin)	Under left side of rear seat.
T4Q (4 Pin)	Under right side of rear seat.
T5B (Yellow, 5 Pin)	Behind right side of dash.
T6E (6 Pin)	Under right rear seat.
T6K (6 Pin)	Under driver's seat.
T7A (7 Pin)	Under driver's seat.
T8B (Black, 8 Pin)	Behind left side of dash.
T8C (Black, 8 Pin)	In center console on selector lever.
T8F (Black, 8 Pin)	Near interior light.
T8i (BLACK, 8 Pin)	On left rear taillight.
T10H (Red, 10 Pin)	Under left side of rear seat.
T10I (Red, 10 Pin)	Under right side of rear seat.
T10O (10 Pin)	Under driver's seat.
T12A (Yellow, 12 Pin)	On steering wheel.
T12E (12 Pin)	Under driver's seat.
T14A (Black, 14 Pin)	Left front of engine compartment.
T17A (Black, 17 Pin)	In E-box plenum chamber.
T17C (Brown, 17 Pin)	In E-box plenum chamber.
T17D (Blue, 17 Pin)	In E-box plenum chamber.
T17E (Red, 17 Pin)	In E-box plenum chamber.
T17H (Gray, 17 Pin)	Under driver's seat.
T17I (Gray, 17 Pin)	Under front passenger's seat.
T17K (Gray, 17 Pin)	Under left side of rear seat.
T17M (Gray, 17 Pin)	Under right side of rear seat.
T17O (Black, 17 Pin)	In luggage compartment.
T17S (Brown, 17 Pin)	Under driver's seat.
T17T (Brown, 17 Pin)	Under front passenger's seat.
T20A (Black, 20 Pin)	Behind left kick panel.
T20B (Black, 20 Pin)	Behind right kick panel.
T20C (Black, 20 Pin)	At left "B pillar.
T20D (Black, 20 Pin)	At right "B" pillar.

Audi A8 L Quattro 2004 - GROUNDS

Audi A8 L Quattro 2004 GROUNDS LOCATION

Component	Location
G3	In engine compartment.
G12	On left side of engine compartment.
G13	Right side of engine compartment.
G17	On intake manifold.
G18	On engine block.
G34	Below driver's seat.
G35	Under front passenger's seat.
G39	Under left side of rear seat.
G40	Under right side of rear seat.
G43	Above right kick panel.
G44	Above left kick panel.
G50	Left side of luggage compartment.
G51	Right side of luggage compartment.
G606	Under center console at shifter.
G610	Under front of center console.
G611	On fuel filler neck.
G613	Left side of luggage compartment.
G653	On left "D" pillar.
G654	On right "D" pillar.
G657	Near left rear window.
G659	Near right rear window.
G675	Right side of luggage compartment.
G676	Left side of luggage compartment.