🏷️ Basic Information

Make:

Audi

Model:

A6, S6, RS6

Year:

2001

Chassis Codes:

4B, 4B2, 4B4, 4B5, 4B6, 4BH

👋 Introduction

Positioning:

The Audi A6 (C5 generation), S6, and RS6 represent Audi's premium executive sedan and performance variants, competing in the luxury market against established rivals from Mercedes-Benz, BMW, and Lexus.

Competitors:

Mercedes-Benz E-Class, BMW 5 Series, Lexus GS.

Vehicle Highlights:

Renowned for its sophisticated design, advanced Quattro all-wheel-drive system, comfortable interior, and strong performance, especially in the S6 and RS6 variants which offer significantly enhanced power and handling.

📋 Manual Details

Models Covered:

All Audi A6, S6, and RS6 models (2001) with chassis codes 4B, 4B2, 4B4, 4B5, 4B6, 4BH.

Total Pages:

16401

Type:

Factory Service & Repair Manual

Language:

English

Format:

PDF

📖 Manual Coverage

Automotive Systems:

General Information, Accessories & Equipment, Audio/Visual/Telematics, Brakes, Driveline/Axle, Electrical System, Lighting, Restraint Systems, Steering System, Suspension System, Body & Frame (Interior & Exterior), Mechanical Engine Systems, Transmission Systems, Tire & Wheels, HVAC (Heating, Ventilation, and Air Conditioning), Wiring Diagrams.

Electrical Systems:

Comprehensive coverage of the entire electrical system, including engine control modules (ECMs), body control modules (BCMs), lighting circuits (headlights, taillights, interior lighting), power windows, locks, mirrors, seats, sunroof, wipers, horn, instrument cluster, diagnostic port (OBD-II).

Mechanical Engine:

Detailed information on all engine variants: 2.4L V6, 2.8L V6, 3.0L V6, 4.2L V8 (naturally aspirated and twin-turbocharged for RS6). Covers engine assembly, disassembly, cooling system, fuel system, lubrication system, emission control systems, ignition system, timing belt/chain service.

Transmission Systems:

Covers both manual (e.g., 01E 6-speed) and automatic (e.g., 5HP19FLA Tiptronic) transmissions. Includes diagnosis, repair, component overhaul, fluid changes, and calibration procedures.

Body Frame:

Includes interior trim removal and installation, exterior panel repair and replacement, door mechanisms, window regulators, bumper systems, aerodynamic components, and body shell integrity checks.

HVAC System:

Comprehensive coverage of the automatic climate control system, including refrigerant servicing, blower motor operation, flap actuator diagnostics and replacement, cabin air filter replacement, and troubleshooting for heating and cooling performance issues.

Restraint Systems:

Detailed procedures for airbag system diagnostics, seatbelt maintenance, SRS module troubleshooting, and replacement of airbag components. Safety precautions for working with airbag systems are thoroughly outlined.

Tires Wheels:

Information on tire pressures, wheel bolt torque specifications, wheel bearing replacement, and advice on tire selection and rotation.

Repair Maintenance:

Diagnostic procedures, step-by-step repair instructions, maintenance schedules, troubleshooting guides, component removal and installation, system checks, torque specifications, electrical component testing, wiring harness repair, bodywork repair, interior trim replacement, HVAC system servicing, engine component overhaul, transmission servicing.

Diagnostics:

In-depth diagnostic trees, fault code interpretation (DTCs), using diagnostic tools, electrical testing methods (multimeter usage), pressure testing, component testing procedures.

Troubleshooting:

Systematic troubleshooting for common and uncommon drivability issues, electrical faults, HVAC problems, and mechanical failures. Includes symptom-based diagnostics.

Engine Tuning:

Includes procedures for checking and adjusting engine parameters, though most tuning is electronically managed by the ECU. Information on spark plug types and gap specifications.

Expertise Level:

Comprehensive factory-level detail suitable for professional technicians and advanced DIY enthusiasts. Covers everything from basic fluid checks to complete engine and transmission rebuilds, including in-depth electrical diagnostics and body repair.

Engine Rebuild:

Complete engine rebuild procedures, including cylinder head overhauling, piston and connecting rod installation, crankshaft and bearing replacement, camshaft timing, and torque sequences for all critical fasteners.

Suspension Steering:

Detailed specifications and procedures for suspension components (struts, shocks, control arms, ball joints, bushings), steering rack replacement, power steering system service, wheel alignment data, and steering column repairs.

Brake System:

Covers brake caliper overhaul, rotor replacement, brake pad service, ABS system diagnostics and repair, brake fluid flushing, and parking brake adjustments.

Wiring Diagrams Completeness:

Extensive wiring diagrams are included, broken down by system, allowing for precise tracing of electrical circuits and component identification. Essential for diagnosing complex electrical faults.

📊 Manual Specifications

File Type:

PDF

Printability:

Printable (entire manual or specific pages)

Binding:

N/A (Digital Download)

Paper Quality:

N/A (Digital Download)

Search Functionality:

Fully searchable PDF content

Operating Systems:

Compatible with all Windows and Mac operating systems.

Software Requirements:

Adobe PDF Reader and/or WinRar.

⚙️ Engine Specifications

A6 Engines:

Common engines include 2.4L V6 (APF, AGA, ALF, AML, BDV), 2.8L V6 (ACK, ALG, AMX, APR, AQD), 3.0L V6 (ASN, AVK, BBJ), and 4.2L V8 (AWS, BBD, BAS, BCY). Specific engine codes vary by market and configuration.

A6 2 4L V6:

2.4L V6 (12 valve or 30 valve depending on engine code) producing approximately 165-170 hp and 155-160 lb-ft torque. Key engine codes: APF, AGA, ALF, AML, BDV.

A6 2 8L V6:

2.8L V6 (30 valve) producing approximately 193 hp and 199 lb-ft torque. Key engine codes: ACK, ALG, AMX, APR, AQD.

A6 3 0L V6:

3.0L V6 (30 valve) producing approximately 204-220 hp and 210-220 lb-ft torque. Key engine codes: ASN, AVK, BBJ.

A6 4 2L V8:

4.2L V8 (32 valve or 40 valve) producing approximately 295-300 hp and 290-300 lb-ft torque. Key engine codes: BAS, BCY (RS6), AWS.

S6 Rs6 Engines:

S6 typically features a 4.2L V8 (40V) producing around 340 PS (250 kW). RS6 (C5) boasts a 4.2L twin-turbo V8 (40V, engine code BCY) producing 450 PS (331 kW).

Fuel Delivery:

Multi-point fuel injection (MPI) or FSI (Direct Injection for some later models within the C5 platform's lifespan). Electronic engine control unit (ECU) manages fuel and ignition timing.

🔧 Transmission

Transmission Options:

Primarily Tiptronic automatic transmissions (e.g., 5-speed 5HP19FLA, 6-speed 01E manual for some performance variants and AWD models). Manual transmissions were available on many A6 models and the RS6.

AWD System:

Audi's legendary Quattro permanent all-wheel-drive system is standard on many models, especially performance variants and higher trim levels.

Tiptronic Functionality:

Tiptronic allows manual gear selection via the gear shifter or steering wheel buttons for a more engaging driving experience.

📐 Dimensions

Overall Length:

Approx. 4.88 meters (sedan) / 4.89 meters (Avant/wagon). Varies slightly by specific model and trim.

Wheelbase:

Approx. 2800 mm (110.2 in).

Width:

Approx. 1.81 meters (71.3 in).

Height:

Approx. 1.45 meters (57.1 in).

Curb Weight:

Ranges from approx. 1550 kg for base A6 models to over 1850 kg for RS6 models.

Gross Vehicle Weight Rating:

Varies by model, typically over 2000 kg.

🛡️ Safety Features

Crash Test Performance:

While specific 2001 ratings may vary by region, the C5 platform generally performed well in contemporary crash tests, benefiting from Audi's commitment to safety engineering. Expect good frontal and side-impact protection.

Active Safety:

Anti-lock Braking System (ABS), Electronic Stability Program (ESP), Traction Control (ASR), Quattro all-wheel-drive.

Passive Safety:

Front airbags, side airbags, curtain airbags (availability varies by trim and option), pre-tensioning seatbelts, safety-optimized steering column.

💡 Technology Features

Audio System:

Factory Audi Symphony or Concert audio systems, often with CD player, cassette deck, and optional navigation. Bose premium sound systems were available. Supports optional satellite radio or CD changer.

Navigation System:

Optional factory navigation system with CD-ROM based maps.

Climate Control Interface:

Automatic climate control with digital display for temperature and fan speed, often with dual-zone functionality.

Parking Sensors:

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

Cruise Control:

Standard cruise control on most models, with adaptive cruise control (ACC) being a rare option for this era.

Telematics:

Optional Telematics or Audi Connect services (basic functionality for the era) for navigation and vehicle information.

🔧 Maintenance

Oil Change Interval:

Typically every 10,000 miles or 12 months, whichever comes first, though extended intervals (e.g., 15,000 miles) were sometimes promoted with synthetic oil. Consult manual for specific engine/oil recommendations.

Brake Fluid Change:

Recommended every 2 years, regardless of mileage, to maintain performance and prevent corrosion.

Engine Air Filter Replacement:

Typically every 15,000-30,000 miles or as needed based on driving conditions, checked during routine inspections.

Cabin Air Filter Replacement:

Recommended annually or every 15,000 miles for optimal cabin air quality.

Engine Oil Type:

Varies by engine. For most gasoline engines, VW 502 00 or VW 503 00 specification synthetic oil is recommended (e.g., 5W-40 or 0W-40). Check manual for precise specifications.

Coolant Type:

G12 or G12+ coolant (pink/purple colored) mixed with distilled water. Check manual for specific part numbers and ratios.

Transmission Fluid:

Automatic transmissions typically require specific ATF fluids (e.g., G 055 025 for certain ZF units). Manual transmissions use gear oil (e.g., G 052 171 A2 for 5-speed manual).

Brake Fluid:

DOT 4 brake fluid.

Power Steering Fluid:

Hydraulic power steering fluid, typically Pentosin CHF 11S or equivalent. Check manual for exact specification and reservoir type.

Common Wear Items:

Ignition coil failures, PCV valve issues, coolant flange leaks (plastic components), suspension component wear (control arms, bushings), A/C system leaks, ABS sensor failures, occasional transmission control module issues on automatic transmissions.

Cooling System Leaks:

Common failure points include plastic coolant flanges, thermostat housings, and water pump seals. Over time, these can degrade and cause coolant leaks.

Ignition System:

Coil-on-plug ignition systems can be prone to failure, leading to misfires and rough running. Spark plug replacement and regular inspection are crucial.

Transmission Problems:

While generally robust, some automatic transmissions can experience wear in valve bodies or torque converters. Regular fluid changes are essential.

Timing Belt Replacement:

For V6 and V8 engines with timing belts, replacement is typically recommended every 60,000-100,000 miles or 5-7 years. Many models utilize maintenance-free timing chains. Check specific engine code.

📚 Vehicle History

Audi Legacy:

Audi, a German automotive manufacturer, has a long history dating back to the early 20th century, known for its engineering prowess, innovation (particularly with Quattro), and premium vehicle offerings.

A6 C5 Generation:

The 2001 model year falls within the second generation of the Audi A6 (C5 platform), which was produced from 1997 to 2004. This generation saw significant design updates and technological advancements over its predecessor.

C5 Platform Significance:

The C5 platform was a significant step for Audi, solidifying its position in the luxury segment with improved styling, build quality, and the widespread adoption of Quattro AWD across the model range.

Performance Variants:

The S6 and RS6 models represent the pinnacle of performance for the C5 A6 line, with the RS6 being a homologation special derived from motorsport, featuring significantly upgraded powertrains and chassis components.

Manufacturing Locations:

Audi A6 models of this era were primarily manufactured at Audi's plant in Ingolstadt, Germany. Some production may have also occurred in other Audi facilities or via contract manufacturing depending on the market.

🏆 Awards & Recognition

Model Accolades:

The C5 A6 platform received numerous accolades during its production run, often praised for its comfortable ride, refined interior, and advanced technology for its time. Specific awards for the 2001 model year would be detailed in automotive press of the period.