This comprehensive service and repair manual for the 1993 Audi 80 (B4-8C) provides detailed instructions, illustrations, wiring schematics, and specifications for every repair and maintenance task. It's the same manual used by Audi technicians at dealerships, covering all models and all repairs from A to Z. This manual offers a complete step-by-step guide to efficiently and effectively diagnose, service, and repair your vehicle. From routine maintenance like oil changes and filter replacements to more complex repairs involving engine, transmission, suspension, brakes, electrical systems, and more, this manual equips you with the necessary knowledge and guidance. You'll find detailed information on every aspect of your Audi 80, including: * **Maintenance:** Get step-by-step instructions for regular maintenance tasks to keep your car running smoothly. * **Engine:** Dive deep into engine workings, troubleshooting, and repair procedures for optimal performance. * **Control System:** Understand and repair your car's electronic control systems, ensuring everything operates as intended. * **Mechanical:** Learn about the mechanical components of your Audi 80, enabling you to diagnose and fix common mechanical issues. * **Fuel Service:** Gain insights into fuel system components, including fuel injection, fuel lines, and fuel pumps. * **Emission Control:** Understand your vehicle's emission system and how to perform necessary repairs to maintain compliance. * **Intake Exhaust Cooling:** Learn about the intake and exhaust systems, including cooling and ventilation components. * **Lubrication:** Explore the lubrication system of your Audi 80, including oil changes and lubrication schedules. * **Ignition Starting Charging:** Master the intricacies of your car's ignition, starting, and charging systems. * **Auto Transmission Clutch:** Gain a comprehensive understanding of your Audi 80's automatic transmission, clutch system, and repair procedures. * **Manual Transmission:** If your car has a manual transmission, this manual provides in-depth information on its operation and repair. * **Transfer Propeller Shaft:** Learn about the transfer case and propeller shaft, ensuring smooth power transmission. * **Drive Shaft:** Understand the function and repair procedures for your car's drive shafts. * **Differential:** Gain knowledge about the differential system and how to maintain and repair it. * **Axle Suspension:** Explore the suspension system, including axles, shocks, and struts. * **Tire & Wheel:** Learn about tire maintenance, wheel alignment, and repair. * **Brake Control:** Understand your car's brake system, including control components and repair procedures. * **Brake:** Master the intricacies of braking systems, from brake pads to hydraulic components. * **Parking Brake:** Learn about the parking brake system and how to perform maintenance and repairs. * **Steering Column:** Gain insights into the steering column, including components and repair procedures. * **Power Steering:** Understand your car's power steering system and how to troubleshoot issues. * **Air Condition:** Learn about the air conditioning system, including components, troubleshooting, and repair techniques. * **Supplemental Restraint System:** Explore the safety features of your Audi 80, including airbags and other restraint systems. * **Seat Belt:** Understand the seat belt system and how to perform repairs and maintenance. * **Engine Immobilizer:** Learn about the engine immobilizer system and its role in vehicle security. * **Cruise Control:** Gain knowledge about the cruise control system and how to diagnose and repair issues. * **Wiper & Washer:** Explore the wiper and washer system, including maintenance and troubleshooting. * **Door Lock:** Understand the door lock mechanism and how to address common problems. * **Meter Audio/Visual:** Learn about the instrument cluster and audio/visual components of your car. * **Horn:** Gain insights into the horn system, including components and troubleshooting. * **Windshield/Glass Mirror:** Explore the windshield, glass, and mirror systems of your Audi 80. * **Instrument Panel:** Understand the instrument panel layout, components, and repair procedures. * **Seat:** Learn about seat adjustments, repairs, and upholstery. * **Engine Hood/Door:** Gain knowledge about the engine hood and door mechanisms, including repair techniques. * **Exterior & Interior:** Explore the exterior and interior components of your Audi 80, including trim, bodywork, and upholstery. * **Electrical:** Dive into the electrical system of your car, including wiring diagrams and troubleshooting procedures. * **Multiplex/Can Communication:** Understand the vehicle's multiplex and CAN bus communication systems for effective diagnosis. This comprehensive manual empowers you to confidently handle a wide range of repairs and maintenance tasks, saving you money on professional services. You can conveniently print the pages you need and take them with you to your garage or workshop, making it easy to reference while working on your car.

The 1993 Audi 80 (B4-8C), a compact executive car, marks a significant evolution in the Audi 80 lineage. This generation, internally known as the B4, brought a fresh design language, improved interior quality, and a wider range of engine options. It was the first Audi 80 to feature a longitudinally mounted engine, a departure from the previous transverse layout. This shift allowed for better weight distribution and enhanced driving dynamics, a hallmark of the Audi brand. Visually, the B4 showcased a more angular, aerodynamic design with a prominent grille, distinctive headlamps, and a sculpted body. The interior, while still offering classic Audi functionality, introduced a more refined and driver-oriented cockpit with improved ergonomics and higher-quality materials. This model also saw the introduction of the "quattro" all-wheel drive system, further enhancing the car's handling and performance on various road conditions. Beyond its aesthetic and mechanical upgrades, the 1993 Audi 80 (B4-8C) offered a range of powertrains that catered to different driver preferences. Engine options ranged from frugal four-cylinder units to powerful turbocharged units, providing a balance of performance and fuel efficiency. Notably, the introduction of the 1.9 TDI engine marked a significant step towards efficient diesel technology. The B4 also introduced a new safety philosophy with standard driver and passenger airbags, further solidifying the Audi 80's reputation for safety and reliability. The 1993 Audi 80 (B4-8C) represents a pivotal moment in the evolution of the model line. Its combination of refined design, enhanced performance, and advanced safety features established it as a benchmark in the compact executive segment, paving the way for future generations of Audi 80 models.