2005 AUDI A8

Audi A8 L Quattro 2005 - BUZZERS, RELAYS & TIMERS

Audi A8 L Quattro 2005 BUZZERS, RELAYS & TIMERS LOCATION

Component	Location
Battery Switch-Off Relay	In luggage compartment, in front of battery. See Fig. 13 .
Brake Booster Relay (1)	On right front kick panel relay panel. See Fig. 84 .
Compressor Level Control System Relay (1)	On relay & fuse panel at left side of dash. See Fig. 83 .
Coolant Fan 3 Relay (6.0L) (1)	On right front kick panel relay panel. See Fig. 84 .
Fuel Pump (FP) Relay	On right kick panel. See Fig. 38 .
Fuel Pump (FP) 2 Relay	On relay & fuse panel, at right side of luggage compartment. See Fig. 37 .
Headlamp Cleaning System Relay (5)	On right front kick panel relay panel. See Fig. 84 .
Horn Relay	On relay & fuse panel at left side of dash. See Fig. 46 .
Motronic Engine Control Module (ECM) Power Supply Relay	On plenum chamber E-box relay panel. See Fig. 68 .
Parking Warning Buzzer	Under right side of rear shelf. See Fig. 114 .
Power Supply Relay 1 (Terminal 75)	On relay & fuse panel at left side of dash. See Fig. 77 .
Rear Window Defogger Relay	In relay & fuse carrier, right side of luggage compartment. See Fig. 81 .
Secondary Air Injection (AIR) Pump Relay	On plenum chamber E-box relay panel. See Fig. 95 .
Starter Relay (2)	On right front kick panel relay panel. See Fig. 84 .
Starter Relay 2 (3)	On right front kick panel relay panel. See Fig. 84 .
Voltage Supply Terminal 15 (B+) Relay (3)	On relay & fuse panel at left side of dash. See Fig. 83 .
Windshield Washer Fluid Heating Relay (4)	On relay & fuse panel at left side of dash. See Fig. 83 .

Audi A8 L Quattro 2005 - CIRCUIT PROTECTION DEVICES

Audi A8 L Quattro 2005 CIRCUIT PROTECTION DEVICES LOCATION

Component	Location
Power (Memory) Seat Circuit Breaker	On relay & fuse carrier at left side of dash. See Fig. 74 .
Power Seat Circuit Breaker	Right kick panel. See Fig. 75 .
Power Seat Circuit Breaker 1 (B)	Right kick panel. See Fig. 84 .
Power Seat Circuit Breaker 2 (D)	Right kick panel. See Fig. 84 .
Power Window Circuit Breaker	In fuse & relay carrier behind left side of dash. See Fig. 78 .

Audi A8 L Quattro 2005 - CONTROL UNITS

Audi A8 L Quattro 2005 CONTROL UNITS LOCATION

Component	Location
ABS Control Module (W/EDL)	At left side of engine compartment. See Fig. 4 .
Access/Start Control Module	Under driver's seat. See Fig. 5 .
Air Bag Control Module	Below center of dash, on transmission tunnel. See Fig. 6 .
Battery Monitoring Control Module	Right side of luggage compartment. See Fig. 12 .
Central Control Module (Comfort System)	Right side of luggage compartment. See Fig. 14 .
Coolant Fan Control (FC) Control Module	On coolant fan. See Fig. 20 .
Coolant FC (Fan Control) Control Module No. 2	On right coolant fan motor. See Fig. 21 .
Door Closing Control Module	Right side of luggage compartment, behind battery. See Fig. 25 .
Door Control Module (Driver Side)	Integrated in driver's door window regulator motor. See Fig. 26 .
Door Control Module (Left Rear)	Integrated in left rear door window regulator motor. See Fig. 28 .
Door Control Module (Passenger Side)	Integrated in right front door window regulator motor. See Fig. 27 .
Door Control Module (Right Rear)	Integrated in right rear door window regulator motor. See Fig. 29 .
Electronic Parking Brake Control Module	Right side of luggage compartment, under battery. See Fig. 32 .
Energy Management Control Module	Right side of luggage compartment, behind side trim. See Fig. 33 .
Engine Control Module (ECM)	In passenger's side plenum chamber E-box. See Fig. 34 .
Fresh Air Blower Control Module	At right rear of engine compartment, next to fresh air blower motor. See Fig. 15 .
Headlight Range Control Module	Behind instrument cluster. See Fig. 44 .
Heated Windshield Control Module	Right side of luggage compartment, under battery. See Fig. 45 .
Inclination-/Anti-Theft Control Module	Under right side of rear seat. See Fig. 47 .
Level Control System Control Module	Behind glove compartment. See Fig. 60 .
Multi-Function Steering Wheel Control Module	In steering wheel. See Fig. 16 .
Parking Aid Control Module	Below CD changer unit on left side of luggage compartment. See Fig. 17 .
Power Sunroof Control Module	In front of roof module. See Fig. 76 .
Rear Lid Control Module	Right rear of luggage compartment. See Fig. 80 .
Roof Electronics Control Module	Under front of roof module. See Fig. 93 .
Throttle Valve Control Module (4.2L)	Behind intake manifold, on throttle valve housing. See Fig. 106 .
Tire Pressure Monitoring Control Module	Under left side of rear seat. See Fig. 107 .
Transmission Control Module (TCM)	In bottom of transmission. See Fig. 108 .
Vehicle Electrical System Control Module	Behind left side of dash. See Fig. 112 .
Vehicle Electrical System Control Module 2	Under front passenger's seat. See Fig. 113 .

Audi A8 L Quattro 2005 - MOTORS

Audi A8 L Quattro 2005 MOTORS LOCATION

Component	Location
Coolant Fan	Right front of engine compartment. See Fig. 18 .
Coolant Fan No. 2	Left front of engine compartment. See Fig. 19 .
Headlight Washer Jet Motor (Left)	Behind left front bumper. See Fig. 53 .
Headlight Washer Jet Motor (Right)	Behind right front bumper. See Fig. 88 .
Leak Detection Pump (LDP)	In left rear wheel well. See Fig. 49 .
Level Control System Compressor Motor	In left front wheelwell. See Fig. 61 .
Open-Close Display Motor	Behind center of dash. See Fig. 70 .
Parking Brake Motor (Left)	At left rear brake caliper. See Fig. 54 .
Parking Brake Motor (Right)	At right rear brake caliper. See Fig. 89 .
Rear Window Shade Motor	Below center of rear parcel shelf. See Fig. 82 .
Secondary Air Injection (AIR) Pump Motor	Between right front bumper & wheelwell liner. See Fig. 94 .
Steering Column Adjustment Motor (Axial)	Left side of steering column. See Fig. 62 .
Steering Column Adjustment Motor (Vertical)	Right side of steering column. See Fig. 63 .
Sunroof Motor	Under rear of roof module. See Fig. 104 .
Trunk Lid Release Motor	Right side of luggage compartment. See Fig. 110 .
Window Regulator (Driver's)	In driver's door. See Fig. 64 .
Window Regulator (Left Rear)	In left rear door. See Fig. 66 .
Window Regulator (Passenger's)	In passenger's door. See Fig. 65 .
Window Regulator (Right Rear)	In right rear door. See Fig. 67 .

Audi A8 L Quattro 2005 - SENDING UNITS/SENSORS

Audi A8 L Quattro 2005 SENDING UNITS & SENSORS LOCATION

Component	Location
Accelerator Pedal Position Sender 2	At accelerator pedal. See Fig. 97 .
Body Acceleration Sensor (Left Front)	On left front strut tower. See Fig. 51 .
Body Acceleration Sensor (Rear)	Behind right rear wheelwell liner. See Fig. 79 .
Body Acceleration Sensor (Right Front)	On right front strut tower. See Fig. 86 .
Brake Booster Sender 1	On ABS-hydraulic control unit. See Fig. 96 .
Front Air Bag Crash Sensor (Driver's Side)	Left front of engine compartment. See Fig. 31 .
Front Air Bag Crash Sensor (Passenger's Side)	Right front of engine compartment. See Fig. 73 .
Fuel Gauge Sender	Inside left side of fuel tank. See Fig. 98 .
Fuel Level Sensor No. 2	Inside right side of fuel tank. See Fig. 36 .
Fuel Supply Sensor 3	Inside left side of fuel tank. See Fig. 39 .
Fuel Supply Sensor 4	Inside right side of fuel tank. See Fig. 40 .
Level Control Pressure Sensor	Behind left wheelwell liner at "A" pillar. See Fig. 59 .
Level Control System Sensor (Left Front)	At left side of front axle. See Fig. 52 .
Level Control System Sensor (Left Rear)	At left side of rear axle. See Fig. 56 .
Level Control System Sensor (Right Front)	At right side of front axle. See Fig. 87 .
Level Control System Sensor (Right Rear)	At right side of rear axle. See Fig. 91 .
Oil Level Thermal Sensor	Bottom of engine oil pan. See Fig. 69 .
Outside Air Temperature Sensor	Behind right side of front bumper. See Fig. 71 .
Rotation Rate Sender	On front tunnel, under extension of center console. See Fig. 99 .
Side Air Bag Crash Sensor (Driver's Side)	At left "B" pillar. See Fig. 22 .
Side Air Bag Crash Sensor (Left Rear)	At bottom of left "C" pillar. See Fig. 57 .
Side Air Bag Crash Sensor (Passenger's Side)	At right "B" pillar. See Fig. 23 .
Side Air Bag Crash Sensor (Right Rear)	At bottom of right "C" pillar. See Fig. 92 .
Steering Angle Sensor	Behind steering wheel. See Fig. 101 .
Steering Column Axial Adjustment Sensor	On steering column. See Fig. 102 .
Steering Column Vertical Adjustment Sensor	On steering column. See Fig. 103 .
Throttle Position Sensor	On accelerator pedal. See Fig. 105 .

Audi A8 L Quattro 2005 - SOLENOIDS & SOLENOID VALVES

Audi A8 L Quattro 2005 SOLENOIDS & SOLENOID VALVES LOCATION

Component	Location
Electro-Hydraulic Engine Mount Solenoid Valve (Left)	Left side of engine compartment. See Fig. 50 .
Electro-Hydraulic Engine Mount Solenoid Valve (Right)	Right side of engine compartment. See Fig. 85 .
Engine Coolant (EC) Switch-Off Valve	Right side of plenum chamber. See Fig. 35 .
Level Control Accumulator Valve	Behind left wheelwell liner at "A" pillar. See Fig. 58 .
Servotronic Solenoid Valve	On steering gear housing. See Fig. 100 .

Audi A8 L Quattro 2005 - SWITCHES

Audi A8 L Quattro 2005 SWITCHES LOCATION

Component	Location
Fuel Tank Lock Switch	Top of fuel filler tube. See Fig. 41 .
Kick Down Switch	Under accelerator pedal. See Fig. 48 .
Trunk Lid Alarm Switch	Inside trunk lid. See Fig. 109 .
Trunk Lock/Alarm/Central Locking Switch	Inside trunk lid. See Fig. 111 .

Audi A8 L Quattro 2005 - MISCELLANEOUS

Audi A8 L Quattro 2005 MISCELLANEOUS LOCATION

Component	Location
Alarm Horn	Right side of plenum chamber. See Fig. 7 .
Antenna For Tire Pressure Check (Left Front)	Left front wheel well. See Fig. 8 .
Antenna For Tire Pressure Check (Left Rear)	Left rear wheel well. See Fig. 10 .
Antenna For Tire Pressure Check (Right Front)	Right front wheel well. See Fig. 9 .
Antenna For Tire Pressure Check (Right Rear)	Right rear wheel well. See Fig. 11 .
Data Bus On Board Diagnostic Interface	Behind glove compartment. See Fig. 24 .
Data Link Connector (DLC)	Under left side of dash. See Fig. 1 .
Door Ambient Lighting Voltage Converter (Driver's)	Inside left front door. See Fig. 30 .
Door Ambient Lighting Voltage Converter (Left Rear)	Inside left rear door. See Fig. 55 .
Door Ambient Lighting Voltage Converter (Passenger's)	Inside right front door. See Fig. 72 .
Door Ambient Lighting Voltage Converter (Right Rear)	Inside right rear door. See Fig. 90 .

Audi A8 L Quattro 2005 - CONNECTORS

Audi A8 L Quattro 2005 CONNECTORS LOCATION

Component	Location
T16 (16 Pin)	Under left side of dash. See Fig. 1 .
T46b (Black, 46 Pin)	Right end of dash. See Fig. 3 .
T46 (Black, 46 Pin)	Left end of dash. See Fig. 2 .

Audi A8 L Quattro 2005 - GROUNDS

Audi A8 L Quattro 2005 GROUNDS LOCATION

Component	Location
G12	On left side of engine compartment. See Fig. 42 .
G13	Right side of engine compartment. See Fig. 42 .
G34	Below driver's seat. See Fig. 43 .
G35	Under front passenger's seat. See Fig. 43 .
G43	Above right kick panel. See Fig. 43 .
G44	Above left kick panel. See Fig. 43 .
G50	Left side of luggage compartment. See Fig. 43 .
G51	Right side of luggage compartment. See Fig. 43 .
G606	Under center console at shifter. See Fig. 43 .
G610	Under front of center console. See Fig. 43 .
G613	Left side of luggage compartment. See Fig. 43 .
G653	On left "D" pillar. See Fig. 43 .
G654	On right "D" pillar. See Fig. 43 .
G657	Near left rear window. See Fig. 43 .
G658	Near left rear window. See Fig. 43 .
G659	Near right rear window. See Fig. 43 .
G667	Left rear of roof. See Fig. 43 .
G675	Right side of luggage compartment. See Fig. 43 .
G676	Left side of luggage compartment. See Fig. 43 .