This comprehensive repair service manual is specifically designed for BMW 525i and 528i models manufactured between 1997 and 2002. Whether you're a car owner with basic mechanical skills or an independent auto service professional, this manual provides the same in-depth specifications and procedures as an authorized dealer service department. It empowers you to understand your car's workings, diagnose problems effectively, and confidently discuss repairs with a mechanic. The manual covers every aspect of the BMW 525i and 528i, including: * **General Information:** This section provides a foundational understanding of the vehicle, its components, and key systems. * **Engine Service and Overhauling:** Detailed instructions and diagrams guide you through servicing and overhauling the engine, from routine maintenance to complex repairs. * **Transmission:** Learn about the transmission system, its operation, troubleshooting techniques, and repair procedures. * **Chassis:** This section dives deep into the chassis, covering its components, assembly, and repair methods. * **Body:** Find comprehensive information on the bodywork, including its construction, repair techniques, and paint specifications. * **Wiring:** The wiring diagrams and explanations enable you to understand the electrical system, identify faults, and perform repairs. * **Fuel System:** Dive into the intricate workings of the fuel system, including fuel injectors, fuel lines, and fuel pumps, with clear instructions for maintenance and repairs. * **Emission Control:** Understand the vehicle's emissions control system, its components, and how to ensure optimal performance. * **Induction:** Explore the induction system, its role in engine performance, and the procedures for maintaining and repairing it. * **Mechanical:** Gain a thorough understanding of the vehicle's mechanical systems, including the engine, transmission, and suspension. * **Control System:** Learn about the vehicle's control systems, how they interact, and how to diagnose and troubleshoot any issues. * **Transmission and Differentials:** Detailed information on the transmission and differential systems, including their operation, maintenance, and repair procedures. * **Troubleshooting and Diagnostics:** Acquire the skills to effectively diagnose and troubleshoot various problems, using step-by-step procedures and diagrams. * **Steering and Suspension:** Comprehensive guidance on the steering and suspension systems, covering their components, adjustments, and repairs. * **Brakes:** Learn about the brake system, its components, troubleshooting techniques, and repair procedures. * **ABS:** Understand the Anti-lock Braking System (ABS), its operation, and how to diagnose and repair any issues. * **Full Specifications and Torque Settings:** This section provides complete technical specifications and torque settings for every component, ensuring accurate repairs and adjustments. * **Service Work:** Comprehensive information on performing various service procedures, from routine maintenance to complex repairs. This manual equips you with the knowledge and practical skills to effectively maintain and repair your BMW 525i or 528i, ensuring optimal performance and longevity.

The BMW 525i and 528i E39, produced between 1997 and 2002, represent a significant chapter in the history of the renowned German automaker. These executive sedans, part of the fifth generation of the 5 Series, offered a perfect blend of luxury, performance, and technology that redefined the segment. The E39 chassis, known for its robust construction and sophisticated suspension, provided a refined ride and handling unlike anything else in its class. The 525i featured a 2.5-liter inline-six engine producing 192 horsepower, while the 528i boasted a 2.8-liter version of the same engine, pushing out 193 horsepower. Both engines were renowned for their smooth operation and impressive fuel efficiency, paired with a choice of 5-speed manual or 5-speed automatic transmissions. The interior of the E39 5 Series showcased BMW's commitment to driver-centric design. High-quality materials and ergonomic controls graced the cabin, creating an atmosphere of refined luxury. The spacious interior offered ample room for passengers and luggage, while the advanced features, such as the optional navigation system, heated seats, and sunroof, enhanced the driving experience. Safety was paramount, with the E39 incorporating advanced safety features like anti-lock brakes (ABS), traction control, and multiple airbags. The E39 525i and 528i cemented their position as benchmarks in the executive sedan segment, offering a combination of performance, luxury, and technology that continues to impress enthusiasts today.