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2003 Volkswagen Passat CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Volkswagen 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
- Cabin Air Filter Locations & Replacement
- Maintenance Lamp Reset
- Radiator & Hose Replacement
- Serpentine Belt Service

A/C & HEATER SERVICE PROCEDURES FOR 2003 Volkswagen Passat AUTOMOBILES
Electrical Symbol & Wire Color Code Identification -> Wire Color Code Identification -> Imported Vehicles
Vehicle: 2003 Volkswagen Passat 4 Motion 2.8 V6 GAS
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BRAKE SERVICE PROCEDURES FOR 2003 Volkswagen Passat AUTOMOBILES
Hydraulic Brake Systems -> Adjustments -> Brake Pressure Regulator -> EuroVan -> Except EuroVan
Vehicle: 2003 Volkswagen Passat 1.8 L4 GAS
Brake Pressure Regulator
Except EuroVan
The brake pressure regulator is mounted on a bracket and operates by a spring attached to the rear axle.
Inspect with vehicle empty of occupants and the fuel tank full.
- Firmly depress brake pedal once, with vehicle on the ground.
- Release pedal suddenly and ensure lever on pressure regulator lever moves.
- Raise and support vehicle.
- Remove bleeder screw on lefthand front caliper and connect gauge tool No. US 1016, or equivalent.
- Remove bleeder screw on righthand rear wheel cylinder or caliper and connect gauge tool.
- Bleed both hoses and gauges with bleedi...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 2003 Volkswagen Passat AUTOMOBILES
Volkswagen -> Fuel Filter Scheduled Maintenance -> 1990-06 Models w/Gasoline Engines -> Normal Service -> Severe Service
Vehicle: 2003 Volkswagen Passat 4 Motion 2.8 V6 GAS
Normal Service
Se...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 2003 Volkswagen Passat AUTOMOBILES
DRIVESHAFT, Replace
Vehicle: 2003 Volkswagen Passat 4 Motion 4.0 W8 GAS
- Raise and support vehicle.
- Remove rear section of exhaust system.
- Remove heat shield from vehicle underbody.
- Remove cover plate.
- Mark position of front and rear drive shaft sections on both constant velocity joints with paint, if not already marked.
- Remove upper three securing bolts in each drive shaft constant velocity joint.
- Install a suitable alignment fixture with ...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 2003 Volkswagen Passat AUTOMOBILES
Alternator, Replace
Vehicle: 2003 Volkswagen Passat 1.8 L4 GAS
- Disconnect wiring connectors from alternator.
- Remove serpentine drive belt, using a suitable removal tool.
- Remove alternator mounting bolts, then the alternator.
- Remove serpen...
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CABIN AIR FILTER LOCATIONS & REPLACEMENT PROCEDURES FOR 2003 Volkswagen Passat AUTOMOBILES
Cabin Air Filter Service -> Volkswagen -> 1998-2005 Passat
Vehicle: 2003 Volkswagen Passat 4 Motion 4.0 W8 GAS
On 1998-2003 models, the cabin air filter should be replaced every 10,000 miles.
On 2004-05 models, the cabin air filter should be replaced every 24 months or 20,000 miles.
- Open the hood.
- Remove plenum air intake cover, Fig. .
- Remove the reta...
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MAINTENANCE LAMP RESET PROCEDURES FOR 2003 Volkswagen Passat AUTOMOBILES
Volkswagen -> Air Bag Warning Lamp ->
Vehicle: 2003 Volkswagen Passat 1.8 L4 GAS
If the Air Bag warning lamp lights and stays on, diagnosis and ...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2003 Volkswagen Passat AUTOMOBILES
Radiator, Replace
Vehicle: 2003 Volkswagen Passat 1.8 L4 GAS
- Drain coolant into suitable container, then remove front bumper.
- Remove radiator hoses from radiator.
- Disconnect thermo switch and radiator fan electrical connectors.
- Remove tensioning e...
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SERPENTINE BELT SERVICE PROCEDURES FOR 2003 Volkswagen Passat AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 2003 Volkswagen Passat 1.8 L4 GAS
- Put lock carrier into service position.
- Mark direction of engine rotation on belt.
- Slacken belt by tur...
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COMPONENT LOCATION DIAGRAMS FOR 2003 Volkswagen Passat AUTOMOBILES
Component location diagrams for most 2003 Volkswagen Passat cars and light trucks sold in the U.S. from 1990+.
![]() Components on diagram: |
![]() Components on diagram: |
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WIRING DIAGRAMS FOR 2003 Volkswagen Passat AUTOMOBILES
OEM drawn wiring diagrams for most 2003 Volkswagen Passat cars and light trucks sold in the U.S.
![]() Components on diagram: |
![]() Components on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 2003 Volkswagen Passat AUTOMOBILES
OEM TSB listings for most 2003 Volkswagen Passat cars and light trucks sold in the U.S. from 1985+.
Document: Radio, Entering and Retrieving Anti-Theft (SAFE) Code Vehicle: 2003 Volkswagen Passat 2.8 V6 GAS Auto Systems: |
Document: Oil Consumption Measurement Vehicle: 2003 Volkswagen Passat 2.8 V6 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 2003 Volkswagen Passat AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 2003 Volkswagen Passat 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 Volkswagen Passat 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 Volkswagen Passat 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 Volkswagen Passat 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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