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2003 Audi A8 Quattro CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Audi REPAIR SHOPS DON'T WANT YOU TO KNOW
Learn how to repair a car or truck, install or remove parts, wire an engine, reset warning lights, replace fuel filter, fix auto body and more. Get Automotix DIY!Select Section
- Component Locations
- Wiring Diagrams
- Technical Service Bulletins
- Specifications
- A/C & Heater Service
- Brake 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
Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 2003 Audi A8 Quattro car and truck
repair procedures including Audi engine diagrams, wiring diagrams, repair work estimating measures, technical service bulletins, auto body work
guidance, starter & alternator replacement procedures, serpentine belt replacement procedures, radiator & hose replacement procedures, tune-up &
drivability specifications, quick lube illustrations, preventive maintenance guide, engine light reset instructions, parts removal and install
procedures, fuel filter replacement directions, component location diagrams, air filter locations & replacement instructions, a/c
system specifications, and general auto service procedures. You don't have to be a car mechanic or technician to know how to fix
your Audi A8 Quattro automobile. Try the Automotix DIY solution today!
A/C & HEATER SERVICE PROCEDURES FOR 2003 Audi A8 Quattro AUTOMOBILES
Audi -> Automatic Temperature Control System Diagnosis & Testing -> Basic Setting
Vehicle: 2003 Audi A8 Quattro 4.2 V8 GAS
- Access diagnostic system as outlined under "Accessing Diagnostic Trouble Codes."
- Press scan tool buttons "0" and "4" to select "Basic Setting."
- Press "Q" button to enter input. Four to six 3-digit numbers should be displayed on screen depending on system. ...
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BRAKE SERVICE PROCEDURES FOR 2003 Audi A8 Quattro AUTOMOBILES
Disc Brakes -> ITT FN 3 Single Piston Front Brakes -> Brake Pad Service
Vehicle: 2003 Audi A8 Quattro 4.2 V8 GAS
- Raise and support vehicle, then remove front tires.
- If brake pads are to be used again, mark installed positions for installation reference.
- Remove caliper guide pin caps.
- Pry brake pad retaining spring out from brake caliper housing using a suitable screwdriver.
- Remove caliper guide pins.
- Remove caliper housing, then position aside using suitable wire or rope.
- Remove brake pads.
- Clean brake caliper housing using a suitable methylated spirit. Pay close attention to pad bonding surfaces. They must be free of all grease and adhesive residues.
- Siphon off a small amount of brake fluid fro...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 2003 Audi A8 Quattro AUTOMOBILES
Audi -> Fuel Filter Replacement -> Gasoline Engines -> Removal & Installation
Vehicle: 2003 Audi A8 Quattro 4.2 V8 GAS
Do not smoke or allow an open flame of any type when working on or near any fuel system related components. The highly flammable vapor mixtures may ignite, resulting in serious personal injury.
Obtain the vehicle owner's radio theft protection code, then disconnect the battery ground cable. Briefly open fuel filler cap to relieve system pressure, then close it again.
After the battery has been disconnected and reconnected, some abnormal driveability symptoms may occur. The vehicle may need to be driven while it relearns its adaptive strategy.
Removal & Installation
On A4 and S4 mod...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 2003 Audi A8 Quattro AUTOMOBILES
CV AXLE SHAFT, Replace
Vehicle: 2003 Audi A8 Quattro 4.2 V8 GAS
- Remove wheel cover and drive axle bolt in hub.
- Pull speed sensor slightly out of housing, then remove drive axle flange to transaxle mounting bolts.
- Press drive axle upward toward front of vehicle, the...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 2003 Audi A8 Quattro AUTOMOBILES
Starter, Replace
Vehicle: 2003 Audi A8 Quattro L 4.2 V8 GAS
- Remove alternator.
- Remove engine cover.
- Completely remove intake air duct between air filter and throttle valve part.
- Remove air induction ports between air filter housing and metering unit.
- Remove attachment screws from fan shroud and electric fan, move fan to side.
- Remove coverings over strut tower and air filter housing.
- Install suitable engine support equipment.
- Unscrew fuel line from pressure regulator.
- Raise engine slightly.
- Remove lower attachment bolts from engine mounts.
- Remove bolts from torque ...
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CABIN AIR FILTER LOCATIONS & REPLACEMENT PROCEDURES FOR 2003 Audi A8 Quattro AUTOMOBILES
Cabin Air Filter Service -> Audi -> 1997-2003 A8 & S8
Vehicle: 2003 Audi A8 Quattro 4.2 V8 GAS
On 1997-2000 models, the cabin air filter should be replaced every 15,000 miles. On 2001-03 models, the cabin air filter should be replaced every ...
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MAINTENANCE LAMP RESET PROCEDURES FOR 2003 Audi A8 Quattro AUTOMOBILES
Audi -> Brake Pad Wear Indicator Lamp ->
Vehicle: 2003 Audi A8 Quattro L 4.2 V8 GAS
The brake pad wear warning lamp will be illuminated when disc brake pads wear d...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2003 Audi A8 Quattro AUTOMOBILES
Radiator, Replace
Vehicle: 2003 Audi A8 Quattro L 4.2 V8 GAS
- Drain cooling system.
- Remove coolant vent line to expansion tank at radiator.
- Place suitable catch pan under bottom righthand corner of radiator at transmission cooler, then disconnect ATF lines.
- Remove coolant hose at bottom righthand of radiator.
- Disconnect Engine Coolant Temperature (ECT) sensor above coolant hose.
- Disconnect top coolant hose from radiator.
- Remove radiator air guide bolts and ...
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SERPENTINE BELT SERVICE PROCEDURES FOR 2003 Audi A8 Quattro AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 2003 Audi A8 Quattro L 4.2 V8 GAS
- Rotate or lift the belt tensioner arm, using a suitable box end wrench to relieve tension fr...
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COMPONENT LOCATION DIAGRAMS FOR 2003 Audi A8 Quattro AUTOMOBILES
Component location diagrams for most 2003 Audi A8 Quattro cars and light trucks sold in the U.S. from 1990+.
 Igniter For Side Airbag, Passenger Side Diagram for 2003 Audi A8 Quattro 4.2 V8 GASComponents on diagram: |
 Intake Air Temperature Sensor Diagram for 2003 Audi A8 Quattro 4.2 V8 GASComponents on diagram: |
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WIRING DIAGRAMS FOR 2003 Audi A8 Quattro AUTOMOBILES
OEM drawn wiring diagrams for most 2003 Audi A8 Quattro cars and light trucks sold in the U.S.
 2003 Audi A8 Quattro L 4.2 V8 GAS Wiring DiagramComponents on diagram: |
 2003 Audi A8 Quattro 4.2 V8 GAS Wiring DiagramComponents on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 2003 Audi A8 Quattro AUTOMOBILES
OEM TSB listings for most 2003 Audi A8 Quattro cars and light trucks sold in the U.S. from 1985+.
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Document: INTERIOR CLEANING PRODUCTS ON AND AROUND AIRBAG UNITS - REVISED Vehicle: 2003 Audi A8 Quattro 4.2 V8 GAS Auto Systems: |
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Document: DOOR TRIM MAKES NOISES - REVISES Vehicle: 2003 Audi A8 Quattro 4.2 V8 GAS Symptoms: |
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COMPONENT/PARTS SPECIFICATIONS FOR 2003 Audi A8 Quattro AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 2003 Audi A8 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 2003 Audi A8 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 2003 Audi A8 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 2003 Audi A8 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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