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2004 Audi A6 Quattro CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Audi REPAIR SHOPS DON'T WANT YOU TO KNOW
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- Component Locations
- Wiring Diagrams
- Technical Service Bulletins
- Specifications
- A/C & Heater Service
- Fuel Filter Replacement
- Driveline, U-Joint & CV Axles Replacement
- Starter & Alternator Replacement
- Cabin Air Filter Locations & Replacement
- Maintenance Lamp Reset
- Radiator & Hose Replacement
- Serpentine Belt Service
A/C & HEATER SERVICE PROCEDURES FOR 2004 Audi A6 Quattro AUTOMOBILES
Computer Relearn Procedures -> Audi -> 1995-97 -> 1998-2004 -> OBD -> OBD II
Vehicle: 2004 Audi A6 Quattro 4.2 V8 GAS
OBD
Whenever the ECM is replaced, the new ECM will need to be " Coded." Use the following procedure to "Code" the ECM.
- Connect VAG 1551, or equivalent scan tool to the diagnostic connector.
- Operate scan tool until display shows "Select Function XX."
- Press scan buttons 0 and 7 to select "Code Control Module" function, then press "Q" button to confirm input.
- "Code Control Module" and " Enter Code Number" should appear on the display.
- Enter correct code number as follows:
- Code 0003: Vehicles with manual transmission.
- Code 0004: Vehi...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 2004 Audi A6 Quattro AUTOMOBILES
Audi -> Fuel Filter Scheduled Maintenance -> All 1989-05 -> Normal Service -> Severe Service
Vehicle: 2004 Audi A6 Quattro 3.0 V6 GAS
Normal Service
Service as re...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 2004 Audi A6 Quattro AUTOMOBILES
CV AXLE SHAFT, Replace -> Front -> Rear
Vehicle: 2004 Audi A6 Quattro 4.2 V8 GAS
Front
- On models with air spring suspension, position vehicle on lifting platform.
- On models without air spring suspension, raise and support vehicle.
- On all models, remove wheel.
- Loosen collar bolt for outer joint of drive axle.
- Remove noise insulation.
- Remove drive axle from transmission flange shaft.
- Remove drive axle. If there is not sufficient room to remove drive axle, proceed as follows:
- Remove nut and hex bolt and pull out both upper links upward.
- Swing wheel bearing housing out to side.
- Remove drive axle.
- Reverse procedure to install, noting the following:
- Torque wheel lug nu...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 2004 Audi A6 Quattro AUTOMOBILES
Alternator, Replace
Vehicle: 2004 Audi A6 Quattro 4.2 V8 GAS
- Remove battery cover.
- Disconnect battery ground cable.
- Remove both mounting bolts, then remove intake channel by pulling up on rear part.
- Raise and support vehicle.
- Loosen fasteners and remove noise insulation.
- Remove front bumper cover.
- Bring lock carrier into service position:
- Remove intake air duct between lock carrier and air cleaner housing at lock carrier.
- Screw in suitable guide bolts into threaded holes.
- Remove lock carrier mounting bolts, then pull lock carrier toward front of vehicle.
- Secure lock carrier with guide bolts.
- Remove left and right engine covers.
- Remove combination...
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CABIN AIR FILTER LOCATIONS & REPLACEMENT PROCEDURES FOR 2004 Audi A6 Quattro AUTOMOBILES
Cabin Air Filter Service -> Audi -> 1998-2004 A6, Allroad, RS6, S6 & 2000-06 TT
Vehicle: 2004 Audi A6 Quattro 4.2 V8 GAS
On 1998-2000 models, the cabin air filter should be replaced every 15,000 miles.
On 2001-03 models, the cabin air filter should be replaced every 20,000 miles.
On 2004-07 models, the cabin air filter should be replaced at 15,000 miles, then every 20,000 miles.
- Open the hood.
- Remove the plenum chamber cover.
- Release the cabin air filter retaining tab ca...
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MAINTENANCE LAMP RESET PROCEDURES FOR 2004 Audi A6 Quattro AUTOMOBILES
Audi -> Electronic Ignition Warning Lamp ->
Vehicle: 2004 Audi A6 Quattro Avant 3.0 V6 GAS
The electronic ignition system warning lamp will be illuminated when the ignition switch is placed in the On position. After the engine is started, the lamp should go off. If the lamp lights during engine operation, a knocking condition is indicated or a problem has arisen in the ignition sys...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2004 Audi A6 Quattro AUTOMOBILES
Radiator, Replace
Vehicle: 2004 Audi A6 Quattro Avant 3.0 V6 GAS
- Remove front bumper.
- Open cap of coolant expansion tank.
- On models with auxiliary heater, remove bolts for parking heater/auxiliary heater exhaust pipe at noise insulation.
- Loosen mounting fasteners and remove noise insulation.
- Turn radiator drain plug counter clockwise, if needed attach hose to connection flange, and drain coolant into a suitable container.
- Pull off retaining clip for lower coolant hose and disconnect coolant hose from radiator.
- Disconnect left coolant hose from radiator.
- Remove left side cover in engine compartment.
- Disconnect top coolant hose from radiator.
- On model...
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SERPENTINE BELT SERVICE PROCEDURES FOR 2004 Audi A6 Quattro AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 2004 Audi A6 Quattro Avant 3.0 V6 GAS
- Remove left and right engine covers.
- Remove air guide mounting bolts.
- Remove air guide.
- Remove front engine cover.
- Mark direction of rotation of drive belt wi...
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COMPONENT LOCATION DIAGRAMS FOR 2004 Audi A6 Quattro AUTOMOBILES
Component location diagrams for most 2004 Audi A6 Quattro cars and light trucks sold in the U.S. from 1990+.
Engine Compartment Diagram for 2004 Audi A6 Quattro Avant 3.0 V6 GAS Components on diagram: |
HVAC Components Diagram for 2004 Audi A6 Quattro 3.0 V6 GAS Components on diagram: |
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WIRING DIAGRAMS FOR 2004 Audi A6 Quattro AUTOMOBILES
OEM drawn wiring diagrams for most 2004 Audi A6 Quattro cars and light trucks sold in the U.S.
2004 Audi A6 Quattro 3.0 V6 GAS Wiring Diagram Components on diagram: |
2004 Audi A6 Quattro Avant 3.0 V6 GAS Wiring Diagram Components on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 2004 Audi A6 Quattro AUTOMOBILES
OEM TSB listings for most 2004 Audi A6 Quattro cars and light trucks sold in the U.S. from 1985+.
Document: AIRBAG, REPLACEMENT INTERVAL CHANGE - REVISED Vehicle: 2004 Audi A6 Quattro 4.2 V8 GAS Auto Systems: |
Document: AUDI TIRE PRESSURE MONITORING SYSTEMS OVERVIEW - REVISED Vehicle: 2004 Audi A6 Quattro 4.2 V8 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 2004 Audi A6 Quattro AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 2004 Audi A6 Quattro cars and light trucks sold in the U.S. and Canada from 1970+.
- Brake caliper mounting bolt torque
- Brake drum runout, machining, & discard specs
- Minimum brake lining thickness.
- Brake rotor runout, parallelism, machining, discard, & finish specs
A/C SYSTEM SPECIFICATIONS: Air conditioning refrigerant capacity and type as well as lubricant capacity for most 2004 Audi A6 Quattro cars and light trucks sold in the U.S. and Canada from 1980+.
- Refrigerant capacity & type, compressor oil viscosity, total system oil capacity & compressor clutch gap
COOLING SYSTEM BLEED: Cooling system bleeder valve identification, bleeder type and bleed procedures for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1986+.
PREVENTIVE MAINTENANCE: Preventive maintenance recommendations and required services for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1980+. Includes severe and routine service schedules
QUICK-LUBE and ILLUSTRATIONS: Fluid recommendations, capacities, drain plug torques, tire data, and severe service recommended preventive maintenance schedules. Information covers most 2004 Audi A6 Quattro cars and light trucks sold in the U.S. and Canada from 1980+. Engine and chassis service images.
- Automatic transmission/transaxles capacities, lubricant recommendations
- Differential/final drive capacities, lube recommendations, grades, & viscosities
- Final drive fill & drain plug torques
- Number of lubrication fittings & plugs
- Power steering, brake, & clutch fluid recommendations
- Manual transmission/transaxle capacities, lube recommendations, grades, & viscosities
- Number of lubrication fittings & plugs
- Power steering, brake, & clutch fluid recommendations
- Engine oil capacities, API grade recommendations, SAE viscosity recommendations, drain plug torque
- Severe service maintenance & interval recommendations
- Tire sizes, wheel nut/bolt torque, pressures & rim sizes
- Transfer case capacities, lube recommendations, grades, & viscosities
TUNE-UP & DRIVEABILITY SPECIFICATIONS: Most tune-up specifications for most 2004 Audi A6 Quattro cars and light trucks sold in the U.S. and Canada from 1980+
- Airflow sensor electrical specifications
- Tensioning specifications for systems with automatic tensioners
- Barometric pressure sensor specs
- Battery group number and cranking performance
- Crankshaft & camshaft position sensor resistance
- Engine compression pressures
- Coolant temperature sensor specs
- Computer advance.
- Diesel fuel temperature sensor resistance.
- Distributor advance specifications
- Ignition pickup coil resistance
- Exhaust gas recirculation temperature sensor resistance
- Engine fastener torque values
- Firing order diagrams
- Fuel system pressures
- Generator (alternator) specs
- Intake air temperature sensor specs
- Ignition coil specifications
- Fuel injector resistance
- Engine idle speeds
- Knock sensor resistance
- Manifold absolute pressure sensor specs
- Mixture control solenoid resistance
- Voltage regulator specs
- Spark plug applications & gaps
- Starter motor electrical specs.
- Tensioning specifications for systems without automatic tensioners
- Throttle body temperature sensor resistance
- Ignition timing in degrees at rpm
- Transmission oil temperature sensor resistance
- Throttle position sensor specs
- Vacuum sensor valve specs
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