2005-07 AUDI S4

Audi S4 Avant Quattro 2007 - BUZZERS, RELAYS & TIMERS

Audi S4 Avant Quattro 2007 BUZZERS, RELAYS & TIMERS LOCATION

Component	Location
Brake Booster Relay	On 9-pin carrier. See Fig. 10.
Convertible Top Hydraulic Pump Relay	Right side of luggage compartment. See Fig. 88.
Convertible Top Hydraulic Pump Relay 2	Right side of luggage compartment. See Fig. 89.
Coolant Circulation Pump Relay (1B)	In E-box in plenum chamber. See Fig. 15.
Coolant Fan Control (FC) Relay (1A)	In E-box in plenum chamber. See Fig. 15.
Front Parking Aid Warning Buzzer	Under left center of dash. See Fig. 40.
Fuel Pump (FP) Relay	On 9-pin relay carrier. See Fig. 41.
Horn Relay	On 9-pin relay carrier. See Fig. 66.
Load Reduction Relay	On 9-pin relay carrier. See Fig. 103.
Locking Relay For Starter (Clutch Pedal Switch)	In E-box in plenum chamber. See Fig. 106.
Motronic Engine Control Module (ECM) Power Supply Relay (3)	In E-box in plenum chamber. See Fig. 15.
Secondary Air Injection (AIR) Pump Relay (2)	In E-box in plenum chamber. See Fig. 15.

Audi S4 Avant Quattro 2007 - CIRCUIT PROTECTION DEVICES

Audi S4 Avant Quattro 2007 CIRCUIT PROTECTION DEVICES LOCATION

Component	Location
E-Box (Plenum Chamber)	Rear of engine compartment, in plenum chamber. See Fig. 106.
Fuse Strip	In plenum, at battery positive post. See Fig. 42.
9-Pin Carrier	Behind driver's storage compartment.

Audi S4 Avant Quattro 2007 - CONTROL UNITS

Audi S4 Avant Quattro 2007 CONTROL UNITS LOCATION

Component	Location
ABS Control Module (W/EDL)	At left side of engine compartment. See Fig. 1.
Airbag Control Module	Under front of center console. See Fig. 3.
Antenna Module	In left side of luggage compartment lid. See Fig. 99.
Central Control Module (Comfort System)	Below driver's seat. See Fig. 19.
Convertible Top Control Module	Behind right quarterpanel trim. See Fig. 73.
Coolant Fan Control (FC) Module	At radiator fan. See Fig. 27.
Door Control Module (Driver Side)	Integrated in driver's door window regulator motor. See Fig. 34.
Door Control Module (Left Rear)	Integrated in left rear door window regulator motor. See Fig. 36.
Door Control Module (Passenger Side )	Integrated in right front door window regulator motor. See Fig. 35.
Door Control Module (Right Rear)	Integrated in right rear door window regulator motor. See Fig. 37.
Entry Assistance Control Module	Under left side of driver's seat. See Fig. 100.
Fresh Air Blower Control Module	Integral to fresh air blower motor. See Fig. 20.
Fuel Pressure Regulator	Top left rear of engine. See Fig. 14.
Garage Door Opener Control Module	Behind right side front bumper cover. See Fig. 43.
Headlight Range Control Module	Behind glove box. See Fig. 28.
Heated Windshield Control Module	In right side of plenum chamber, under battery tray. See Fig. 64.
Memory Seat Control Module	Under front of driver's seat. See Fig. 107.
Motronic Engine Control Module (ECM)	In E-box, in plenum chamber. See Fig. 108.
Navigation Control Module W/CD (Avant)	Left rear of cargo area. See Fig. 21.
Navigation Control Module W/CD (Except Avant)	Left side of luggage compartment. See Fig. 22.
Operating Electronics & Telephone Control Module	Under front passenger's seat. See Fig. 31.
Parking Aid Control Module (Avant)	Left rear of luggage compartment. See Fig. 23.
Parking Aid Control Module (Except Avant)	Left rear of luggage compartment. See Fig. 24.
Throttle Valve Control Module (4)	On throttle body. See Fig. 17.
Trailer Towing Control Module	Left side of luggage compartment. See Fig. 30.
Transmission Control Module (TCM) (Multitronic)	On rear of transmission. See Fig. 26.
Vehicle Electrical System Control Module	Behind driver's storage compartment. See Fig. 29.

Audi S4 Avant Quattro 2007 - MOTORS

Audi S4 Avant Quattro 2007 MOTORS LOCATION

Component	Location
Brake System Vacuum Pump (A/T)	Left front of engine compartment. See Fig. 13.
Convertible Top Compartment Cover Locking Motor	Rear center wall of convertible top compartment. See Fig. 82.
Convertible Top Hydraulic Pump	Right side of luggage compartment. See Fig. 87.
Convertible Top Locking Motor	Center front of convertible top. See Fig. 93.
Fuel Tank Lid Unlock Motor	Right side of luggage compartment. See Fig. 79.
Headlight Beam Adjusting Motor (Left)	Behind left headlight assembly. See Fig. 101.
Intake Manifold Change-Over Actuator (1)	Front of engine. See Fig. 16.
Leak Detection Pump (LDP)	In left rear wheel well. See Fig. 98.
Lock Unit For Central Locking (Driver's)	Rear of driver's door. See Fig. 104.
Lock Unit For Central Locking (Passenger's)	Rear of passenger's door. See Fig. 105.
Rear Lid Unlock Motor	On lock carrier. See Fig. 80.
Secondary Air Injection (AIR) Pump Motor	Right front of engine compartment. See Fig. 14.
Window Regulator Motor (Left Rear)	Behind left quarterpanel. See Fig. 78.
Window Regulator Motor (Right Rear)	Behind right quarterpanel. See Fig. 77.

Audi S4 Avant Quattro 2007 - SENDING UNITS/SENSORS

Audi S4 Avant Quattro 2007 SENDING UNITS & SENSORS LOCATION

Component	Location
Brake Booster Pressure Sensor	In plenum, at right side of brake booster. See Fig. 9.
Brake Pressure Sensor 1	In ABS hydraulic unit. See Fig. 12.
Camshaft Position (CMP) Sensor (Bank 1) (6)	Rear of right cylinder bank. See Fig. 17.
Camshaft Position (CMP) Sensor (Bank 2) (2)	Rear of left cylinder bank. See Fig. 17.
Convertible Top Frame Position Sensor	At right main mount. See Fig. 85.
Engine Coolant Temperature (ECT) Sensor (5)	Rear of engine. See Fig. 17.
Engine Speed (RPM) Sensor (1)	In transmission housing over ring gear. See Fig. 18.
Front Air Bag Crash Sensor (Driver's Side)	Left front of engine compartment. See Fig. 38.
High Pressure Sensor	Left side of A/C condenser. See Fig. 65.
Mass Air Flow (MAF) Sensor	On intake air duct. See Fig. 14.
Side Air Bag Crash Sensor (Driver's Side) (Convertible)	At left "B" pillar. See Fig. 96.
Side Air Bag Crash Sensor (Driver's Side) (Except Convertible)	At base of left "B" pillar. See Fig. 32.
Side Air Bag Crash Sensor (Passenger's Side) (Convertible)	At right "B" pillar. See Fig. 97.
Side Air Bag Crash Sensor (Passenger's Side) (Except Convertible)	At base of right "B" pillar. See Fig. 33.
Speedometer Vehicle Speed Sensor (2)	In transmission housing, over ring gear. See Fig. 18.

Audi S4 Avant Quattro 2007 - SOLENOIDS & SOLENOID VALVES

Audi S4 Avant Quattro 2007 SOLENOIDS & SOLENOID VALVES LOCATION

Component	Location
ABS Hydraulic Unit	Left side of engine compartment. See Fig. 2.
Camshaft Adjustment Valve 1 (7)	Rear of right cylinder bank. See Fig. 17.
Camshaft Adjustment Valve 2 (1)	Rear of right cylinder bank. See Fig. 17.
Evaporative Emissions (EVAP) Canister Purge Regulator Valve	Right side of engine compartment. See Fig. 14.
Intake Manifold Change-Over Valve (4)	Front of engine. See Fig. 16.
Rollover Solenoid	Behind left rear seat. See Fig. 102.
Secondary Air Injection (AIR) Solenoid Valve (5)	Front of engine. See Fig. 16.

Audi S4 Avant Quattro 2007 - SWITCHES

Audi S4 Avant Quattro 2007 SWITCHES LOCATION

Component	Location
Ambient Temperature Switch	Behind front bumper. See Fig. 4.
Brake Fluid Level Warning Switch	On brake fluid reservoir. See Fig. 11.
Compartment Cover Locked Right Switch 1	Right side of convertible top compartment. See Fig. 70.
Compartment Cover Open Position Switch	Right side of convertible top compartment. See Fig. 71.
Compartment Left Locked Switch	On left compartment cover latch. See Fig. 72.
Convertible Top Closed Position Switch	At right main mount. See Fig. 81.
Convertible Top Compartment Enclosure Position Switch	Right front of luggage compartment. See Fig. 83.
Convertible Top Compartment Latch Switch (Unlock)	Rear center wall of convertible top compartment. See Fig. 84.
Convertible Top Front Lock Switch	On front locking motor bracket. See Fig. 86.
Convertible Top Left Lock Switch	Top left center of windshield frame. See Fig. 90.
Convertible Top Lock Switch (Closed)	Front center of convertible top. See Fig. 91.
Convertible Top Lock Switch (Open)	Center front of convertible top. See Fig. 92.
Convertible Top Open Position Switch	Right front of convertible top compartment. See Fig. 94.
Convertible Top Right Lock Switch	Top right side of windshield frame. See Fig. 95.
Front Hood Switch	In lock carrier. See Fig. 76.
Oil Pressure Switch (3)	Left rear of engine. See Fig. 17.

Audi S4 Avant Quattro 2007 - MISCELLANEOUS

Audi S4 Avant Quattro 2007 MISCELLANEOUS LOCATION

Component	Location
Alarm Horn	Right side of convertible top compartment. See Fig. 67.
Amplifier (Avant)	Right side of cargo area. See Fig. 5.
Amplifier (Convertible)	Right rear of luggage compartment. See Fig. 68.
Amplifier (Sedan)	Right front of luggage compartment. See Fig. 6.
Amplifier (Telephone Compensator)	Right side of luggage compartment. See Fig. 74.
Antenna Splitter	Below front passenger's seat. See Fig. 8.
Antenna (Telephone)	Behind right side of front bumper. See Fig. 7.
Central Locking & Anti-Theft Alarm System Antenna	Left side of luggage compartment flap. See Fig. 69.
Ignition Coils 1, 2, 3 & 4 W/Power Output Stage (Bank 2)	Top of left cylinder bank. See Fig. 14.
Ignition Coils 5, 6, 7 & 8 W/Power Output Stage (Bank 1)	Top of right cylinder bank. See Fig. 14.
Induction Coil (Anti-Theft Immobilizer)	Right side of steering column. See Fig. 39.
Telephone Antenna (R65)	Center of luggage compartment floor. See Fig. 75.

Audi S4 Avant Quattro 2007 - GROUNDS

Audi S4 Avant Quattro 2007 GROUNDS LOCATION

Component	Location
G3	Above right motor mount. See Fig. 63.
G11	In plenum chamber, right of battery. See Fig. 54.
G12	Left rear of engine compartment. See Fig. 55.
G26	Left side of engine compartment. See Fig. 53.
G32	Behind left kick panel. See Fig. 52.
G43	Behind right kick panel. See Fig. 50.
G44	Behind left kick panel. See Fig. 49.
G49	Under driver's seat. See Fig. 57.
G50	Left side of luggage compartment. See Fig. 44.
G52	Left side of rear lid. See Fig. 61.
G53	Right side of rear lid. See Fig. 62.
G73	Rear of roof. See Fig. 47.
G77	Left "B" pillar. See Fig. 46.
G78	Right "B" pillar. See Fig. 45.
G347	Front of sun roof console. See Fig. 51.
G610	Under front of center console. See Fig. 48.
G624	At negative (-) post on battery. See Fig. 56.
G637	At air bag control module. See Fig. 58.
G653	On left "D" pillar. See Fig. 59.
G654	At right "D" pillar. See Fig. 60.