🏷️ Basic Information

Make:

Audi

Model:

A6 S6 RS6

Model Code:

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

Year:

1999

Platform Code:

C5

👋 Introduction

Vehicle Class:

Executive / Luxury Sedan & Wagon

Premium Segment:

Competed directly with Mercedes-Benz E-Class, BMW 5 Series

Brand Perception:

Audi established itself as a strong contender in the luxury segment with advanced technology and Quattro all-wheel drive.

Performance Variants:

Includes high-performance S6 and RS6 models known for their powerful engines and dynamic handling.

All Wheel Drive:

Quattro permanent all-wheel-drive system standard on many models, enhancing traction and stability.

📋 Manual Details

Scope:

Complete factory service and repair

Models Covered:

Audi A6, S6, RS6 (all variants)

Total Pages:

16401

Type:

Factory Service Manual (FSM) / Repair Manual

Language:

English

Format:

PDF

Delivery Method:

Instant Download

Operating Systems:

Windows and Mac

Software Required:

Adobe PDF Reader, WinRar (or equivalent unzipping software)

📖 Manual Coverage

Powertrain:

Mechanical Engine, Transmission (Automatic & Manual), Driveline, Axles

Chassis:

Brakes, Steering, Suspension, Wheels & Tires, Body & Frame

Electrical Electronics:

General Electrical, Lights, Restraints (Airbags/Seatbelts), Audio/Visual/Telematics, Wiring Diagrams

Comfort Convenience:

HVAC (Heating, Ventilation, Air Conditioning), Interior & Exterior Accessories & Equipment

Emissions Control:

Catalytic converter, oxygen sensors, EGR system (if applicable), EVAP system

Maintenance:

Scheduled maintenance, fluid changes, filter replacements, lubrication

Diagnostics:

Troubleshooting guides, symptom-based diagnosis, fault code interpretation

Repair Rebuild:

Component removal/installation, assembly/disassembly, calibration, major overhauls

Wiring Schematics:

Comprehensive wiring diagrams for all electrical systems

Body Work:

Exterior panel removal/installation, interior trim, glass replacement, body damage repair procedures.

HVAC Repair:

Climate control system diagnostics, refrigerant handling, component replacement (compressor, blower motor, evaporator, heater core).

Lighting System Service:

Headlight bulb replacement, taillight assembly service, wiring checks for all exterior and interior lights.

Restraint System Service:

Airbag system diagnostics, seat belt maintenance, component replacement procedures for SRS components.

Depth:

Factory-level, covering everything from basic maintenance to complete component rebuilds and complex diagnostics

Diagnostic Tools:

Details on using diagnostic tools like VAG-COM (VCDS) for accessing control modules, reading fault codes, and performing adaptations.

📊 Manual Specifications

File Type:

PDF

Searchability:

Fully searchable text content

Printability:

Printable (entire manual or select pages)

Binding:

N/A (Digital Download)

Paper Quality:

N/A (Digital Download)

⚙️ Engine Specifications

A6 2.8L V6:

2.8L Naturally Aspirated V6 (AEC, ACK, ALG, AMX, APU, ARJ, ASG, ATQ, AVP, AWN, AXM, AZA, AZC)

A6 2.7T V6:

2.7L Twin-Turbocharged V6 (APQ, ARE, ARE, AWE, AWG, AZB, BES)

A6 4.2L V8:

4.2L Naturally Aspirated V8 (AKB, AKD, AQG, ASG, AVX, AVP, AWN, AXM, AZA, AZC)

S6 2.7T V6:

2.7L Twin-Turbocharged V6 (APQ, ARE, AWE, AWG, AZB, BES)

Rs6 2.7T V6:

2.7L Twin-Turbocharged V6 (APQ, ARE, AWE, AWG, AZB, BES - higher output variant)

A6 1.8T I4:

1.8L Turbocharged Inline-4 (AWT, ARK, APU, ANB, AEB)

A6 2.8L Power:

Approx. 190-200 HP

A6 2.7T Power:

Approx. 250 HP

A6 4.2L Power:

Approx. 300 HP

Rs6 2.7T Power:

Approx. 450 HP (US Spec)

A6 1.8T Power:

Approx. 150-170 HP

Injection Type:

Multi-Point Fuel Injection (MPI) or Direct Injection (TFSI in later models, though likely MPI for 1999 base)

Fuel Type:

Premium Unleaded Gasoline (91+ Octane recommended, especially for turbocharged models)

🔧 Transmission

A6 Common Trans:

5-speed Tiptronic Automatic Transmission

S6 Rs6 Trans:

5-speed Tiptronic Automatic Transmission (tuned for performance)

A6 Optional Trans:

5-speed Manual Transmission (less common)

Tiptronic Functionality:

Allows manual gear selection for sportier driving.

Drive System:

Quattro permanent All-Wheel Drive

📐 Dimensions

Body Styles:

4-door Sedan (4B2), 5-door Avant (Wagon) (4B5)

Curb Weight Range:

Approx. 3,500 - 4,200 lbs (1588 - 1905 kg), varies significantly by engine and drivetrain

🛡️ Safety Features

Crash Test Achievements:

Generally good safety performance for its era, with strong structural integrity. Specific NHTSA/IIHS ratings for the 1999 model year would be detailed in the manual.

Braking System:

Anti-lock Braking System (ABS), Electronic Brake-force Distribution (EBD)

Traction Control:

Electronic Stability Program (ESP) / Traction Control System (ASR)

Airbags:

Driver and front passenger airbags, optional side airbags.

Seatbelts:

Three-point seatbelts with pre-tensioners for front occupants.

💡 Technology Features

Audio System:

Factory Audi Chorus or Concert sound systems, optional Bose premium audio.

Navigation:

Optional factory navigation system with CD-ROM based maps.

Cruise Control:

Standard cruise control.

Parking Assistance:

Optional rear parking sensors (Audi Parking System).

Telematics:

Optional Audi Telematics system (may include emergency services or vehicle tracking capabilities).

🔧 Maintenance

Oil Change Interval:

Typically 7,500 - 10,000 miles (12,000 - 16,000 km) or 12 months, depending on driving conditions. Consult manual for specific interval.

Timing Belt Replacement:

For 2.8L V6 and 4.2L V8 engines (non-turbo): typically around 60,000 - 70,000 miles (96,000 - 112,000 km). The 2.7T V6 models utilize a timing chain system or a belt system depending on specific engine code, requiring verification. Manual is critical here.

Transmission Fluid Service:

Tiptronic Automatic: Check manual, typically around 40,000 - 60,000 miles (64,000 - 96,000 km) for fluid and filter change.

Engine Oil Type:

VW 502 00 approved synthetic oil (e.g., 5W-40 or 0W-40, consult manual for exact viscosity and spec)

Coolant Type:

G12 (or G12 Plus) ethylene glycol coolant, pink in color.

Brake Fluid Type:

DOT 4

Power Steering Fluid:

G 002 000 or equivalent hydraulic fluid.

Common Issues 2.7T:

PCV system failures (cracked hoses, clogged valves), ignition coil failures, cam adjuster seal leaks, turbocharger issues (though generally robust).

Common Issues All Models:

Oil leaks (valve cover gaskets, oil pan gaskets), ABS sensor failures, door lock actuator failures, climate control unit issues (HVAC panel), suspension component wear (control arms, ball joints).

Timing Belt Tensioner:

For non-turbo models, timely replacement of the timing belt tensioner and idlers is critical to prevent catastrophic engine failure.

📚 Vehicle History

Brand History:

Audi, a German manufacturer with a long history of automotive innovation, particularly in Quattro all-wheel-drive technology.

Platform Generation:

First generation Audi A6 (C5 platform) introduced in 1997 (Europe) / 1998 (North America), with significant updates and the introduction of S6 and RS6 models during its lifecycle.

C5 Facelift:

The 1999 model year represents a key point in the C5 generation, predating the major facelift in 2001 (for model year 2002).

Production Period:

The C5 platform A6 was produced from 1997 to 2004.

🏆 Awards & Recognition

Car And Driver Aya:

The Audi A6 (C5) was frequently recognized on Car and Driver's '10Best' list in various years, highlighting its blend of performance, luxury, and technology.

Safety Ratings General:

While specific year-by-year ratings vary, the C5 platform generally offered robust safety for its time, bolstered by Quattro and available airbags.