Audi A4 Workshop Service & Repair Manual 2004

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🏷️ Basic Information Identification Make: Audi Model: A4 Model Generation: B6 (Typ 8E/8H) Model Year: 2004 👋 Introduction Market Position Vehicle Segment: Compact Executive Sedan/Wagon (premium segment). Target Audience: Discerning buyers seeking a blend of performance, luxury, technology, and sophisticated design. Competitive Analysis Key Competitors: BMW 3 Series, Mercedes-Benz C-Class, Lexus IS, Acura TL, Volvo S60. Key Features Design Language: Sharp, elegant lines, characteristic Audi Singleframe grille, sophisticated interior appointments. Powertrain Options: Range of efficient and powerful gasoline and diesel engines, available with quattro AWD. Interior Quality: Premium materials, excellent fit and finish, ergonomic design. Driving Dynamics: Balanced handling, comfortable ride, engaging driving experience, particularly with quattro. 📋 Manual Details Coverage Areas Manual Type: Workshop Service & Repair Manual Language: English Format: PDF Availability: Instant Download Page Count: Detailed page count not specified in product description, but expected to be extensive for a full workshop manual. 📖 Manual Coverage Systems Covered Engine Mechanical: Engine removal/installation, cylinder head, valve train, pistons, connecting rods, crankshaft, lubrication system, cooling system, fuel system (mechanical aspects). Engine Management: Engine control module (ECM) diagnostics, fuel injection, ignition system, emission control systems, sensor data interpretation, troubleshooting. Transmission Manual: Clutch assembly, gearbox removal/installation, internal components, shift mechanisms, fluid specifications. Transmission Automatic: Tiptronic automatic transmission (if applicable to specific engine), torque converter, valve body, hydraulic circuits, electronic control, fluid specifications. Drivetrain: Front-wheel drive (FWD) and quattro all-wheel drive (AWD) systems, drive shafts, CV joints, differentials, wheel bearings. Suspension: Front suspension (MacPherson struts), rear suspension (multi-link), shock absorbers, springs, control arms, bushings, alignment specifications. Steering: Power steering system, steering rack, column, tie rods, hydraulic pump, fluid specifications. Brakes: Front and rear disc brakes, ABS system, EBD, brake calipers, rotors, pads, hydraulic lines, brake fluid specifications, bleeding procedures. Electrical System: 12V battery, charging system (alternator), starting system, lighting, fuses, relays, wiring diagrams, diagnostics. Body And Chassis: Body panel removal/installation, doors, hood, trunk, interior trim, glass, structural components. HVAC: Heating, ventilation, and air conditioning (HVAC) system, refrigerant, compressor, condenser, evaporator, blower motor, climate control unit. Interior: Seating systems, airbags, dashboard, center console, door panels, infotainment system integration. Procedures Included Routine Maintenance: Oil changes, filter replacements (oil, air, cabin), spark plug replacement, fluid checks and top-offs. Component Replacement: Detailed step-by-step instructions for replacing major components like alternators, starters, water pumps, brake pads, sensors, etc. Troubleshooting Diagnostics: Systematic approaches to diagnosing common and complex issues, including fault code interpretation and live data analysis. Repair And Rebuild: Instructions for engine and transmission rebuilds, suspension component overhauls, and brake system repairs. Specifications And Tolerances: Torque specifications for all fasteners, component clearances, and critical measurement data. Wiring Diagrams: Comprehensive electrical schematics for all vehicle systems. Technical Depth Depth Level: Comprehensive, covering everything from basic maintenance to advanced diagnostics and major component overhauls. Diagnostic Tools: Implied support for diagnostic tools like VAG-COM (VCDS) for accessing fault codes and live data. 📊 Manual Specifications File Format File Type: PDF Software Requirement: None (standard PDF reader required) Searchability: Typically searchable text within PDF documents. Print Quality: Assumed to be good quality for clear reproduction of text and diagrams, suitable for printing. Binding Type: N/A (Digital download) Paper Type: N/A (Digital download) ⚙️ Engine Specifications Primary Engine Engine Type: Inline-4 Cylinder, DOHC, 20 valves (4 valves per cylinder), Aluminum Block and Head. Engine Code Examples: ALT (2.0L FSI), BFB (1.8T), AVJ (1.8T), BEX (1.8T Quattro), ASN (3.0L V6), BBK (3.0L V6 Quattro). Displacement Examples: 1.8L (1781 cc), 2.0L (1984 cc), 3.0L (2976 cc). Performance Horsepower Examples: 1.8T: 170 hp @ 5900 rpm; 2.0 FSI: 150 hp @ 6000 rpm; 3.0 V6: 220 hp @ 6300 rpm. Torque Examples: 1.8T: 164 lb-ft @ 1950 rpm; 2.0 FSI: 140 lb-ft @ 3250 rpm; 3.0 V6: 221 lb-ft @ 3200 rpm. Fuel System Fuel Delivery: Multi-Point Fuel Injection (MPI) for naturally aspirated engines, Fuel Stratified Injection (FSI) for 2.0L, Electronic Fuel Injection (EFI) for 1.8T. Fuel Type: Premium Unleaded Gasoline (91+ Octane recommended). Turbocharger: Present on 1.8T (BFB, AVJ, BEX) models. Garrett turbocharger. 🔧 Transmission Standard Standard Transmission: 5-speed Manual (FWD), 6-speed Manual (Quattro). Optional Optional Transmission: Tiptronic 5-speed Automatic (FWD and Quattro). Features Drive Modes: Front-Wheel Drive (FWD) or Audi quattro All-Wheel Drive. Transmission Fluid Type: Specific ATF for automatic transmissions (e.g., G 055 025 or equivalent), Manual transmission fluid (e.g., G 052 171 or equivalent). 📐 Dimensions Exterior Length: Sedan: Approx. 4574 mm (179.9 in); Avant (Wagon): Approx. 4586 mm (180.6 in). Width: Approx. 1766 mm (69.5 in). Height: Sedan: Approx. 1423 mm (56.0 in); Avant: Approx. 1452 mm (57.2 in). Wheelbase: Approx. 2642 mm (104.0 in). Cargo Trunk Volume Sedan: Approx. 460 liters (16.2 cu ft). Cargo Volume Avant: Approx. 480 liters (16.9 cu ft) with rear seats up, 1370 liters (48.4 cu ft) with rear seats folded. Weights Curb Weight Examples: 1.8T FWD Manual: Approx. 1450 kg (3197 lbs); 3.0...

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Description

🏷️ Basic Information

Identification

Make:

Model:

Model Generation:

B6 (Typ 8E/8H)

Model Year:

👋 Introduction

Market Position

Vehicle Segment:

Compact Executive Sedan/Wagon (premium segment).

Target Audience:

Discerning buyers seeking a blend of performance, luxury, technology, and sophisticated design.

Competitive Analysis

Key Competitors:

BMW 3 Series, Mercedes-Benz C-Class, Lexus IS, Acura TL, Volvo S60.

Key Features

Design Language:

Sharp, elegant lines, characteristic Audi Singleframe grille, sophisticated interior appointments.

Powertrain Options:

Range of efficient and powerful gasoline and diesel engines, available with quattro AWD.

Interior Quality:

Premium materials, excellent fit and finish, ergonomic design.

Driving Dynamics:

Balanced handling, comfortable ride, engaging driving experience, particularly with quattro.

📋 Manual Details

Coverage Areas

Manual Type:

Workshop Service & Repair Manual

Language:

English

Format:

Availability:

Instant Download

Page Count:

Detailed page count not specified in product description, but expected to be extensive for a full workshop manual.

📖 Manual Coverage

Systems Covered

Engine Mechanical:

Engine removal/installation, cylinder head, valve train, pistons, connecting rods, crankshaft, lubrication system, cooling system, fuel system (mechanical aspects).

Engine Management:

Engine control module (ECM) diagnostics, fuel injection, ignition system, emission control systems, sensor data interpretation, troubleshooting.

Transmission Manual:

Clutch assembly, gearbox removal/installation, internal components, shift mechanisms, fluid specifications.

Transmission Automatic:

Tiptronic automatic transmission (if applicable to specific engine), torque converter, valve body, hydraulic circuits, electronic control, fluid specifications.

Drivetrain:

Front-wheel drive (FWD) and quattro all-wheel drive (AWD) systems, drive shafts, CV joints, differentials, wheel bearings.

Suspension:

Front suspension (MacPherson struts), rear suspension (multi-link), shock absorbers, springs, control arms, bushings, alignment specifications.

Steering:

Power steering system, steering rack, column, tie rods, hydraulic pump, fluid specifications.

Brakes:

Front and rear disc brakes, ABS system, EBD, brake calipers, rotors, pads, hydraulic lines, brake fluid specifications, bleeding procedures.

Electrical System:

12V battery, charging system (alternator), starting system, lighting, fuses, relays, wiring diagrams, diagnostics.

Body And Chassis:

Body panel removal/installation, doors, hood, trunk, interior trim, glass, structural components.

HVAC:

Heating, ventilation, and air conditioning (HVAC) system, refrigerant, compressor, condenser, evaporator, blower motor, climate control unit.

Interior:

Seating systems, airbags, dashboard, center console, door panels, infotainment system integration.

Procedures Included

Routine Maintenance:

Oil changes, filter replacements (oil, air, cabin), spark plug replacement, fluid checks and top-offs.

Component Replacement:

Detailed step-by-step instructions for replacing major components like alternators, starters, water pumps, brake pads, sensors, etc.

Troubleshooting Diagnostics:

Systematic approaches to diagnosing common and complex issues, including fault code interpretation and live data analysis.

Repair And Rebuild:

Instructions for engine and transmission rebuilds, suspension component overhauls, and brake system repairs.

Specifications And Tolerances:

Torque specifications for all fasteners, component clearances, and critical measurement data.

Wiring Diagrams:

Comprehensive electrical schematics for all vehicle systems.

Technical Depth

Depth Level:

Comprehensive, covering everything from basic maintenance to advanced diagnostics and major component overhauls.

Diagnostic Tools:

Implied support for diagnostic tools like VAG-COM (VCDS) for accessing fault codes and live data.

📊 Manual Specifications

File Format

File Type:

Software Requirement:

None (standard PDF reader required)

Searchability:

Typically searchable text within PDF documents.

Print Quality:

Assumed to be good quality for clear reproduction of text and diagrams, suitable for printing.

Binding Type:

N/A (Digital download)

Paper Type:

N/A (Digital download)

⚙️ Engine Specifications

Primary Engine

Engine Type:

Inline-4 Cylinder, DOHC, 20 valves (4 valves per cylinder), Aluminum Block and Head.

Engine Code Examples:

ALT (2.0L FSI), BFB (1.8T), AVJ (1.8T), BEX (1.8T Quattro), ASN (3.0L V6), BBK (3.0L V6 Quattro).

Displacement Examples:

1.8L (1781 cc), 2.0L (1984 cc), 3.0L (2976 cc).

Performance

Horsepower Examples:

1.8T: 170 hp @ 5900 rpm; 2.0 FSI: 150 hp @ 6000 rpm; 3.0 V6: 220 hp @ 6300 rpm.

Torque Examples:

1.8T: 164 lb-ft @ 1950 rpm; 2.0 FSI: 140 lb-ft @ 3250 rpm; 3.0 V6: 221 lb-ft @ 3200 rpm.

Fuel System

Fuel Delivery:

Multi-Point Fuel Injection (MPI) for naturally aspirated engines, Fuel Stratified Injection (FSI) for 2.0L, Electronic Fuel Injection (EFI) for 1.8T.

Fuel Type:

Premium Unleaded Gasoline (91+ Octane recommended).

Turbocharger:

Present on 1.8T (BFB, AVJ, BEX) models. Garrett turbocharger.

🔧 Transmission

Standard

Standard Transmission:

5-speed Manual (FWD), 6-speed Manual (Quattro).

Optional

Optional Transmission:

Tiptronic 5-speed Automatic (FWD and Quattro).

Features

Drive Modes:

Front-Wheel Drive (FWD) or Audi quattro All-Wheel Drive.

Transmission Fluid Type:

Specific ATF for automatic transmissions (e.g., G 055 025 or equivalent), Manual transmission fluid (e.g., G 052 171 or equivalent).

📐 Dimensions

Exterior

Length:

Sedan: Approx. 4574 mm (179.9 in); Avant (Wagon): Approx. 4586 mm (180.6 in).

Width:

Approx. 1766 mm (69.5 in).

Height:

Sedan: Approx. 1423 mm (56.0 in); Avant: Approx. 1452 mm (57.2 in).

Wheelbase:

Approx. 2642 mm (104.0 in).

Cargo

Trunk Volume Sedan:

Approx. 460 liters (16.2 cu ft).

Cargo Volume Avant:

Approx. 480 liters (16.9 cu ft) with rear seats up, 1370 liters (48.4 cu ft) with rear seats folded.

Weights

Curb Weight Examples:

1.8T FWD Manual: Approx. 1450 kg (3197 lbs); 3.0 Quattro Auto: Approx. 1650 kg (3638 lbs).

🛡️ Safety Features

Ratings

NHTSA Rating Examples:

Likely received 4 or 5 stars in frontal and side impact tests based on contemporary models and industry standards.

IIHS Rating Examples:

Likely received 'Good' ratings in relevant crashworthiness categories.

Active Features

Standard Anti-lock Braking System.

Standard Electronic Brake-force Distribution.

Standard Electronic Stability Program (ESP) / Program der Stabilisierung (PD S).

Passive Features

Airbags:

Frontal airbags for driver and passenger, front side airbags, optional rear side airbags and full-length side curtain airbags.

Seatbelts:

3-point inertia-reel seatbelts with front pretensioners and load limiters.

Child Seat Anchors:

ISOFIX (or equivalent) anchor points for child safety seats.

💡 Technology Features

Infotainment

Audio System Options:

Standard Audi Symphony or Concert radio with CD player. Optional Audi Navigation Plus system with color screen and Sirius satellite radio capability.

Speaker Configuration:

Typically 8-10 speakers, with optional Bose premium sound system.

Driver Assistance

Cruise Control:

Standard cruise control.

Parking Sensors:

Optional front and rear parking sensors (Audi parking system).

Connectivity

Bluetooth:

Optional Bluetooth mobile phone preparation (may require a specific cradle).

Auxiliary Input:

May be available as an option for connecting external audio devices.

🔧 Maintenance

Service Intervals

Oil Change Interval:

Typically every 10,000 miles (15,000 km) or 1 year, whichever comes first, depending on driving conditions (Longlife service intervals may apply).

Air Filter Replacement:

Recommended every 30,000 miles (45,000 km) or as needed based on driving environment.

Cabin Filter Replacement:

Recommended annually or every 12,000 miles (19,000 km).

Spark Plug Replacement:

Typically every 60,000 miles (96,000 km) for standard plugs, longer for iridium/platinum.

Timing Belt Or Chain:

Engines with timing chains (e.g., 3.0 V6) do not require periodic replacement. 1.8T and 2.0 FSI engines use timing belts, typically requiring replacement around 100,000-120,000 miles (160,000-190,000 km) or 7 years, whichever comes first.

Fluid Specifications

Engine Oil Specification:

API SN, ACEA A3/B4 or specific VW 502.00/505.00 approved oil. Viscosity typically 5W-40 or 0W-40.

Coolant Specification:

G12 Plus Plus (G12++) or G13 approved coolant. Typically a 50/50 mix with distilled water.

Brake Fluid Specification:

DOT 4 (e.g., G 000 000 M2 or equivalent).

Known Issues

Ignition Coils:

Failure of ignition coils, leading to misfires and rough running, particularly on 1.8T engines.

Oil Leaks:

Common oil leaks from valve cover gasket, oil pan gasket, and oil filter housing.

Suspension Components:

Wear on control arm bushings, ball joints, and tie rod ends, leading to steering play and uneven tire wear.

ABS Sensors:

ABS wheel speed sensor failures, triggering ABS and ESP warning lights.

Climate Control Actuators:

Failure of HVAC blend door actuators, causing issues with temperature and airflow control.

Pcv Valve System:

Clogging or failure of the Positive Crankcase Ventilation (PCV) system, leading to oil leaks and rough idle.

Timing Belt Tensioner:

Potential failure of the timing belt tensioner on belt-driven engines, which can lead to catastrophic engine damage if not addressed.

📚 Vehicle History

Brand Heritage

Brand Origins:

Audi AG, a German manufacturer of automobiles, founded in 1910, known for its 'Vorsprung durch Technik' (Advancement through Technology).

Model Evolution

A4 Lineage:

The Audi A4 succeeded the Audi 80/90 line and has been a cornerstone of Audi's executive car offerings since its introduction in 1994.

B6 Generation:

The B6 generation (Typ 8E for sedan/avant, Typ 8H for convertible) was introduced in late 2000 for the 2001 model year and saw its primary production run through 2006. The 2004 model year represents a mid-cycle refinement within this generation.

Production

Production Location:

Primary manufacturing plant located in Ingolstadt, Germany, with other facilities in Europe.

🏆 Awards & Recognition

Recognitions

Editor Awards Examples:

The B6 A4 generation generally received positive reviews for its sophisticated styling, comfortable interior, and competent handling, often lauded as a strong contender in its class.

Safety Awards Examples:

Consistently achieved good safety ratings from organizations like NHTSA and IIHS, reflecting its robust construction and safety features.

Design Accolades:

The B6 A4's design was considered a significant step forward for Audi, contributing to the brand's growing reputation for premium and stylish vehicles.