🏷️ Basic Information

Make:

Audi

Model:

A8

Model Variant:

S8, A8L

Model Year:

1999

Chassis Codes:

4D, 4D2, 4D8

👋 Introduction

Positioning:

The 1999 Audi A8 and S8 represented Audi's flagship luxury sedan, competing directly with established European luxury marques. The A8L offered extended wheelbase for enhanced rear passenger comfort.

Competitors:

Primarily competed with the Mercedes-Benz S-Class, BMW 7 Series, and Jaguar XJ of the same era. Known for its advanced all-wheel-drive system (quattro) and understated luxury.

Features:

Aluminum space frame (ASF) construction for reduced weight and improved rigidity, quattro all-wheel-drive, available V8 and W12 engines (though W12 not typically in 1999 US models), luxurious interior appointments.

📋 Manual Details

Coverage:

All models and variants of the 1999 Audi A8, S8, and A8L

Pages:

12458

Type:

Factory Service & Repair Manual

Language:

English

Format:

PDF

📖 Manual Coverage

Mechanical Engine:

Detailed coverage of engine mechanical systems, including disassembly, inspection, and reassembly for various Audi V-configuration engines.

Transmission:

Comprehensive repair procedures for automatic transmissions, including torque converter, valve body, and internal components.

Brakes:

In-depth coverage of the hydraulic brake system, including ABS, EBD, brake caliper overhaul, rotor replacement, and brake fluid specifications.

Electrical:

Extensive electrical system coverage, including starter, alternator, battery, lighting, ignition, fuel injection, and comfort systems.

Body Frame:

Detailed instructions for interior and exterior bodywork, including panel removal, installation, door mechanisms, and trim components.

Suspension:

Coverage of front and rear suspension systems, including shock absorbers, control arms, springs, and alignment procedures.

Steering:

Detailed information on the power steering system, including pump, rack and pinion, tie rod ends, and steering column adjustments.

HVAC:

Diagnosis and repair of the heating, ventilation, and air conditioning (HVAC) system, including refrigerant handling and component replacement.

Restraints:

Information pertaining to the airbag system, seatbelt pre-tensioners, and associated control modules.

Audio Visual Telematics:

Coverage of the factory audio system, navigation, and telematics components.

Driveline Axle:

Repair and maintenance of the front and rear axles, driveshafts, and differential components.

Tire Wheels:

Specifications for tire sizes, wheel torque, and related components.

Lights:

Detailed schematics and repair procedures for interior and exterior lighting systems, including bulb types and replacement.

Routine Maintenance:

Detailed procedures for oil changes, filter replacements, fluid checks, and general servicing.

Troubleshooting:

Diagnostic flowcharts and symptom-based troubleshooting guides for common and complex issues.

Component Replacement:

Step-by-step instructions for removing and installing major and minor vehicle components.

Diagnostics:

Procedures for using diagnostic tools and interpreting fault codes across various vehicle systems.

Wiring Diagrams:

Complete and detailed wiring diagrams for all electrical systems, crucial for troubleshooting electrical faults.

Emissions Control:

Information on emission control systems, catalytic converters, and related diagnostic procedures.

Depth:

Comprehensive factory-level technical information, suitable for professional technicians and advanced DIY enthusiasts. Covers everything from basic maintenance to complete engine and transmission overhauls.

Diagnostic Tools:

Guidance on using VAG-COM or similar diagnostic tools for accessing ECU data, reading fault codes, and performing adaptations/coding.

📊 Manual Specifications

Format:

PDF

Delivery Method:

Instant Download

Quality:

Printable, allowing users to print individual pages or the entire manual.

Binding:

Digital (Downloadable PDF)

Paper Type:

N/A (Digital)

Searchable:

Fully searchable text for quick access to specific information.

Os Compatibility:

Compatible with all Windows and Mac operating systems.

Software Requirements:

Requires Adobe PDF Reader and/or WinRAR.

⚙️ Engine Specifications

Engine Options:

3.7L V8 (AAH/AKG), 4.2L V8 (ABZ/AKB/ART), 2.8L V6 (ACK/APR/AQD) - Note: Manual covers multiple engine variants, specific details for each would be within the manual.

Hp Torque:

Varies by engine. For example, the 4.2L V8 (ABZ) produced approximately 300 hp and 295 lb-ft of torque. Specific figures are detailed within the manual.

System Type:

Electronic Fuel Injection (EFI) with multi-point injection.

ECU:

Bosch Motronic electronic engine control unit (specific model number varies by engine).

Coolant Type:

G12 Antifreeze/Coolant (or equivalent)

🔧 Transmission

Type:

5-speed Tiptronic automatic transmission (01V/01E).

Type:

Manual transmission was not common or available in North American market for this generation A8/S8, but may have been in other markets. The manual likely covers both possibilities.

Drivetrain:

quattro permanent all-wheel-drive system.

Atf Type:

G 052 162 A1 (or equivalent LT71141 specification) for automatic transmission.

📐 Dimensions

Wheelbase:

Standard A8: 2945 mm (115.9 in); A8L: 3131 mm (123.3 in).

Length:

Standard A8: 5034 mm (198.2 in); A8L: 5219 mm (205.5 in).

Curb Weight:

Varies by model and engine, typically around 1750-1950 kg (3850-4300 lbs).

🛡️ Safety Features

NHTSA Rating:

Specific NHTSA ratings for 1999 models are not readily available in a consolidated format, but generally considered safe for its era. Refer to manual for detailed safety system information.

ABS:

Standard Anti-lock Braking System (ABS).

Traction Control:

Standard Electronic Stability Program (ESP) and Traction Control (ASR).

Airbags:

Front airbags for driver and passenger, side airbags (standard or optional depending on trim).

Seatbelts:

Three-point inertia-reel seatbelts with pre-tensioners.

💡 Technology Features

System:

Audi Navigation System Plus (optional), CD player, AM/FM radio, premium sound system options (Bose).

Features:

Cruise control, parking sensors (optional), automatic climate control.

Phone:

Optional integrated car phone system.

Headlights:

Halogen or Xenon (HID) headlights (optional), automatic headlight range adjustment.

🔧 Maintenance

Oil Change:

Typically every 10,000 miles or 12 months, whichever comes first (check manual for specific engine and oil type recommendations).

Timing Belt:

For V6 and V8 engines with timing belts, the interval is typically around 60,000-100,000 miles. Check specific engine type in manual.

Engine Oil:

Varies by engine. Typically SAE 5W-40 or 0W-40 synthetic oil meeting VW 502 00 specification. Manual will list exact requirements.

Coolant:

G12 ethylene glycol-based coolant with a 50/50 mix of coolant and distilled water.

Brake Fluid:

DOT 4 brake fluid.

Common Problems:

Examples include: coolant leaks from metal coolant pipes, failing ABS sensors, transmission control module issues, worn suspension components (e.g., control arm bushings), HVAC blower motor resistor failure, and infotainment system glitches.

Filters:

Oil Filter: 078115561B (example, actual may vary by engine). Air Filter: 4B0129620A (example). Cabin Filter: 4B1819439 (example).

📚 Vehicle History

Heritage:

Audi has a long history of engineering excellence and quattro all-wheel-drive technology, established through motorsport success and premium passenger vehicles.

Generation:

This is the first generation (D2 platform) of the Audi A8, introduced in 1994 and significantly updated for the 1999 model year with revised styling and new engine options.

Manufacturing Location:

Neckarsulm, Germany.

🏆 Awards & Recognition

Awards:

While specific awards for the 1999 model year may not be widely cataloged, the A8 consistently received praise for its build quality, technology, and driving dynamics in contemporary reviews.