The 2004 Audi A8 S8 (D3-4E) Service and Repair Manual provides a comprehensive guide for maintaining, servicing, diagnosing, and repairing your vehicle. This manual, identical to what technicians use at dealerships, offers detailed instructions, diagrams, illustrations, wiring schematics, and specifications to help you tackle any repair with confidence.

This manual covers all aspects of your Audi A8 S8, from basic maintenance to complex repairs. You'll find information on:

* **Engine:** Including control systems, mechanical components, fuel service specifications, emissions control, intake/exhaust cooling, lubrication, ignition, starting, charging, and more.
* **Transmission:** Covers automatic transmission, clutch, manual transmission, transfer case, propeller shaft, drive shaft, differential, axle, suspension, tires, wheels, and brakes.
* **Electrical Systems:** Explore the electrical system, including multiplex/CAN communication, air conditioning, supplemental restraint systems, seat belts, engine immobilizer, cruise control, wipers & washers, door locks, meter audio/visual systems, horn, windshield/glass/mirrors, instrument panel, seats, engine hood/doors, and exterior & interior features.

With this manual, you'll have everything you need to confidently maintain and repair your Audi A8 S8. Print the specific pages and diagrams you need for easy access in your garage or workshop.

The 2004 Audi A8 S8 (D3-4E) is a high-performance luxury sedan that embodies the pinnacle of German engineering and design. This generation marked a significant departure from previous A8 models, introducing a completely new platform and a more aggressive, sporty aesthetic. The S8, as the performance variant, boasted a powerful 4.2-liter V8 engine with a supercharger, generating an impressive 450 horsepower and 354 lb-ft of torque. This potent powertrain allowed the S8 to achieve a 0-60 mph time of just 4.7 seconds, making it a true performance machine disguised as a luxurious sedan. Beyond its mechanical prowess, the A8 S8 incorporated a suite of advanced technologies, including Audi's quattro all-wheel-drive system, a sophisticated air suspension, and an array of driver-assist features. The interior was meticulously crafted with premium materials, offering a luxurious and comfortable environment for its occupants.

The 2004 Audi A8 S8's design language was bold and timeless, with sharp lines and a sculpted exterior. The signature single-frame grille was prominent, flanked by aggressive headlights incorporating xenon technology. The side profile showcased the car's elongated proportions and understated elegance, while the rear showcased distinctive taillights and dual exhaust outlets hinting at the performance lurking beneath the hood. The S8 was available in a range of colors, allowing owners to personalize their vehicles to their taste. The D3 platform underpinning the A8 and S8 marked a significant advancement for Audi, offering a more robust and refined driving experience. With its distinctive design, powerful engine, and advanced features, the 2004 Audi A8 S8 stands as a testament to Audi's engineering prowess and its commitment to producing luxury vehicles that are both stylish and capable.