🏷️ Basic Information

Make:

Audi

Model:

A6

Year:

2003

Chassis Code:

C5

👋 Introduction

Positioning:

Premium mid-size luxury sedan, competing with BMW 5 Series, Mercedes-Benz E-Class, and Lexus GS.

Advantages Of Manual:

Licensed OE material, digital convenience, comprehensive coverage, cost savings over dealership repairs.

Ease Of Use:

Instant online access, intuitive interface, accessible on multiple devices.

Accuracy:

Derived from official factory repair data, ensuring accuracy and completeness.

📋 Manual Details

Primary Coverage:

2003 Audi A6 (C5 platform)

Engine Variants Covered:

2.7L V6 Twin-Turbo (APBP), 3.0L V6 (ASN), 4.2L V8 (ASG)

Transmission Variants Covered:

5-speed Tiptronic automatic (FWD/Quattro), 6-speed manual (Quattro)

Estimated Page Count:

Extensive (digital format, equivalent to thousands of printed pages)

Type:

Service and Repair Manual Software

Language:

English

Format:

Online Software/Web-based Access

Subscription Period:

1 Year Included, with discounted renewal options

📖 Manual Coverage

Engine Mechanical:

Yes (disassembly, assembly, component testing, timing, seals, gaskets)

Engine Performance:

Yes (fuel delivery, ignition, emissions control, turbocharging systems)

Transmission Manual:

Yes (clutch, gearbox, linkage, fluid specifications)

Transmission Automatic:

Yes (Tiptronic operation, valve body, torque converter, fluid service, control modules)

Drivetrain AWD:

Yes (Quattro system, differentials, driveshafts, CV joints)

Brakes:

Yes (hydraulic system, ABS, EBD, brake pads, rotors, calipers, bleeding procedures)

Suspension:

Yes (front and rear suspension components, struts, shocks, bushings, alignment specifications)

Steering:

Yes (power steering system, steering rack, tie rods, column)

Electrical System Basic:

Yes (battery, charging system, starter, lighting)

Electrical System Advanced:

Yes (ECU, CAN bus, body control modules, comfort electronics, sensor testing)

HVAC:

Yes (climate control, A/C system, heater core, blower motor, refrigerant charging)

Body And Interior:

Yes (panels, doors, windows, seats, trim removal and installation)

Routine Maintenance:

Yes (oil changes, filter replacements, spark plugs, brake fluid flush)

Component Replacement:

Yes (alternator, water pump, starter, mass airflow sensor, oxygen sensors)

Troubleshooting:

Yes (diagnostic trouble codes, symptom-based diagnosis)

Major Repairs:

Yes (engine rebuilds, transmission overhauls, suspension component replacement)

Wiring Diagrams:

Yes (comprehensive electrical schematics for various systems)

Depth:

Factory-level detail, suitable for professional technicians and advanced DIYers.

Diagnostic Procedures:

Detailed steps for using diagnostic tools and interpreting sensor data.

Torque Specifications:

Comprehensive list of all critical torque values for fasteners.

Special Tools:

Identification and usage instructions for any required specialized tools.

📊 Manual Specifications

Compatibility:

PC, Laptop, Smartphone, Tablet via web browser

Digital Quality:

High-resolution, clear graphics and text.

Binding:

Not Applicable (Digital Format)

Paper:

Not Applicable (Digital Format)

Text Search:

Fully searchable text content for quick information retrieval.

⚙️ Engine Specifications

Engine Options:

2.7L V6 Twin-Turbo (APBP), 3.0L V6 (ASN), 4.2L V8 (ASG)

2.7T Horsepower:

250 hp @ 5800-6300 rpm

2.7T Torque:

258 lb-ft @ 1800-4000 rpm

3.0 Horsepower:

220 hp @ 6300 rpm

3.0 Torque:

221 lb-ft @ 3200 rpm

4.2 Horsepower:

300 hp @ 6200 rpm

4.2 Torque:

295 lb-ft @ 3500 rpm

Fuel Type:

Premium Unleaded Gasoline (91 octane or higher recommended)

Injection System:

Multi-Point Fuel Injection (MPI) or FSI (for 3.0L ASN)

Engine Codes Detailed:

APBP (2.7T), ASN (3.0 V6), ASG (4.2 V8)

🔧 Transmission

Standard Transmission:

5-speed Tiptronic automatic (available on most models)

Optional Transmission:

6-speed manual (primarily with Quattro)

Tiptronic Features:

Steering wheel shift buttons, manual override mode.

Automatic Transmission Fluid Type:

G 055 025 (or equivalent like Pentosin ATF1)

📐 Dimensions

Wheelbase:

110.7 inches (2812 mm)

Length:

192.1 inches (4879 mm)

Width:

73.1 inches (1857 mm)

Height:

56.9 inches (1445 mm)

Curb Weight Approx:

3700 - 4000 lbs (1680 - 1815 kg), depending on engine and drivetrain

🛡️ Safety Features

NHTSA Front Impact Driver:

5 Stars

NHTSA Front Impact Passenger:

5 Stars

IIHS Front Offset Rating:

Good

ABS:

Standard Anti-lock Braking System

Esp:

Standard Electronic Stability Program (ESP)

Traction Control:

Standard Traction Control (ASR)

Airbags Front:

Standard dual front airbags

Airbags Side:

Standard front side-impact airbags

Airbags Curtain:

Optional front and rear curtain airbags (Sideguard)

💡 Technology Features

Infotainment System:

Audi Navigation System Plus (optional), Symphony or Concert audio systems, CD player, cassette player (early models).

Adaptive Cruise Control:

Optional (Adaptive Cruise Control - ACC)

Parking Sensors:

Optional (Audi Parking System)

Bluetooth:

Optional (via accessory modules or integrated systems on later models)

🔧 Maintenance

Oil Change Interval:

Approximately every 10,000 miles (16,000 km) or 1 year, based on Audi's 'LongLife' service regime, with oil quality sensor adaptation.

Engine Coolant Flush:

Recommended every 2 years or 30,000 miles (48,000 km).

Transmission Fluid Service:

Automatic: Recommended every 40,000-60,000 miles (64,000-96,000 km) for long-term reliability. Manual: Check for leaks, fluid change at higher mileage (e.g., 80,000-100,000 miles) as per severe service schedule.

Engine Oil Type:

SAE 5W-40 or 5W-30 (depending on climate and specific engine, refer to owner's manual for precise spec, often meeting VW 502 00 or VW 503 00)

Power Steering Fluid:

G 002 000 (or Pentosin CHF 11S)

Brake Fluid Type:

DOT 4 (or DOT 4 Plus)

Common Problems:

Ignition coil failures (coil-on-plug), mass airflow sensor issues, oil leaks (valve cover gaskets, oil pan), HVAC blower motor resistor failure, transmission shift solenoid issues in higher mileage automatics, CV joint wear, timing belt service (on non-TSI engines before 2006, but C5 typically uses chain or belt depending on specific engine - 3.0 ASN is belt driven).

📚 Vehicle History

Brand Focus:

German engineering, premium quality, quattro all-wheel drive technology, sophisticated design.

C5 Generation:

Second generation A6 (Typ 4B), introduced in 1997, facelifted in 2001. The 2003 model falls within the later C5 production run.

Production Period C5:

1997-2004

Manufacturing Location:

Germany, Slovakia

🏆 Awards & Recognition

Car And Driver Best 10:

The Audi A6 range, particularly with the 2.7T and 4.2 V8, was frequently recognized for its blend of performance, luxury, and comfort, often appearing on lists like Car and Driver's '10Best' in its class during its production run.