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2003 Audi A4 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
- Brake Service
- Fuel Filter Replacement
- Driveline, U-Joint & CV Axles Replacement
- Starter & Alternator Replacement
- Maintenance Lamp Reset
- Radiator & Hose Replacement
- Serpentine Belt Service
A/C & HEATER SERVICE PROCEDURES FOR 2003 Audi A4 Quattro AUTOMOBILES
Audi -> Component Replacement & Adjustment -> Blower Motor, Replace -> A4 -> A6, Allroad & S6 -> A8 & S8 -> TT
Vehicle: 2003 Audi A4 Quattro Avant 3.0 V6 GAS
A4
- Remove cover from under glove compartment, then the glove compartment.
- Disconnect blower motor electrical connector.
- Remove blower motor plate mounting bolts, then the blower motor with mounting plate from HVAC housing.
- Depress blower motor locking tabs, then separate blower motor from mounting plate.
- Disconnect electrical connectors.
- Reverse procedure to install, noting the following:
- Ensure locking tabs are securely intact.
- Ensure electrical connectors and wiring are properly routed to avoid pinching.
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BRAKE SERVICE PROCEDURES FOR 2003 Audi A4 Quattro AUTOMOBILES
Hydraulic Brake Systems -> Diagnosis & Testing -> A4, S4 & TT -> A6 & S6 -> Brake Pressure Regulator
Vehicle: 2003 Audi A4 Quattro 1.8 L4 GAS
Brake Pressure Regulator
A4, S4 & TT
On these models there is no mechanical brake pressure regulator. Specially matched control module software controls brake pressure regulation.
A6 & S6
Brake pressure regulator is mounted on body (lef...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 2003 Audi A4 Quattro AUTOMOBILES
Audi -> Fuel Filter Scheduled Maintenance -> All 1989-05 -> Normal Service -> Severe Service
Vehicle: 2003 Audi A4 Quattro 3.0 V6 GAS
Normal Service
Service as re...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 2003 Audi A4 Quattro AUTOMOBILES
CV AXLE SHAFT, Replace -> FRONT -> REAR
Vehicle: 2003 Audi A4 Quattro Avant 1.8 L4 GAS
FRONT
- Remove wheel cover, then drive axle bolt in hub.
- Raise and support vehicle, then remove tires.
- Remove drive axle mounting bolts.
- Remove cable for ABS wheel speed sensor from bracket at brake caliper, then pull ABS wheel speed sensor slightly out of swing arm.
- Remove swing arm to track control arms mounting bolt and push both track control arms up and out, then tilt swing arm away.
- Remove drive axle.
- Reverse procedure to install, noting the following:
- Torque wheel lug nuts to 89 ft. lbs.
- Torque wheel hub nut to 280 ft. lbs.
- Torque drive axle flange bolts to 59 ft. lbs.
REAR
- Pull...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 2003 Audi A4 Quattro AUTOMOBILES
Starter, Replace -> Automatic Transmission -> Manual Transmission
Vehicle: 2003 Audi A4 Quattro 3.0 V6 GAS
Automatic Transmission
- Remove alternator assembly.
- Disconnect starter motor electrical connectors.
- Raise and support vehicle.
- Remove righthand front wheel.
- Remove starter motor to transmission housing attaching bolts.
- Remove starter from below.
- Reverse procedure to install. Torque starter motor attaching bolt...
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MAINTENANCE LAMP RESET PROCEDURES FOR 2003 Audi A4 Quattro AUTOMOBILES
Audi -> Auto-Check Indicator System ->
Vehicle: 2003 Audi A4 Quattro 1.8 L4 GAS
The auto-check system will monitor certain vehicle systems when the ignition switch is placed in the On position and vehicle is operated. When all monitored systems are functioning properly, the system display will indicate "OK" for a few seconds after the ignition switch is placed in the On position.
This system monitors brake fluid level and hydraulic pressure, engine oil pressure, coolant temperature and level, brake pad wear, headlamps and tail lamps, battery voltage, washer fluid level and fuel level.
When the auto-check yellow or r...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2003 Audi A4 Quattro AUTOMOBILES
Heater Hose, Replace -> Inlet -> Outlet
Vehicle: 2003 Audi A4 Quattro Avant 3.0 V6 GAS
Inlet
- Drain coolant into a suitable container.
- Reposition hose clamp at heater core and remove hose.
- Reposition hose clamp at rear coolant pipe and remove hose.
- Remove hose from vehicle.
- Reverse procedure t...
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SERPENTINE BELT SERVICE PROCEDURES FOR 2003 Audi A4 Quattro AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 2003 Audi A4 Quattro 1.8 L4 GAS
- Put lock carrier into service position.
- Mark direction of engine rotation on belt.
- Slacken belt by turning pensioner in directi...
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COMPONENT LOCATION DIAGRAMS FOR 2003 Audi A4 Quattro AUTOMOBILES
Component location diagrams for most 2003 Audi A4 Quattro cars and light trucks sold in the U.S. from 1990+.
ABS Components Diagram for 2003 Audi A4 Quattro Avant 3.0 V6 GAS Components on diagram: |
Parking Aid Components Diagram for 2003 Audi A4 Quattro 3.0 V6 GAS Components on diagram: |
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WIRING DIAGRAMS FOR 2003 Audi A4 Quattro AUTOMOBILES
OEM drawn wiring diagrams for most 2003 Audi A4 Quattro cars and light trucks sold in the U.S.
2003 Audi A4 Quattro Avant 1.8 L4 GAS Wiring Diagram Components on diagram: |
2003 Audi A4 Quattro 1.8 L4 GAS Wiring Diagram Components on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 2003 Audi A4 Quattro AUTOMOBILES
OEM TSB listings for most 2003 Audi A4 Quattro cars and light trucks sold in the U.S. from 1985+.
Document: AIRBAG / PYROTECHNIC SAFETY BELT DEPLOYMENT INQUIRIES - REVISED Vehicle: 2003 Audi A4 Quattro 1.8 L4 GAS Auto Systems: |
Document: AIRBAG, REPLACEMENT INTERVAL CHANGE - REVISED Vehicle: 2003 Audi A4 Quattro 1.8 L4 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 2003 Audi A4 Quattro AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 2003 Audi A4 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 A4 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 A4 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 A4 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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