The BMW 5-series, specifically the E39 chassis generation produced from 1995 to 2003, represents a pinnacle of executive sedan engineering, embodying the brand's "Ultimate Driving Machine" philosophy. For the 1998 model year, this executive sedan offered a harmonious blend of performance, refined handling, and luxurious appointments, making it a strong competitor in its segment. Available with a range of inline-six engines, including the M52B20, M52B25, and M52B28, and optional V8 power, the E39 provided a dynamic driving experience complemented by advanced technologies like CAN bus integration and optional stability control. Its balanced chassis and driver-focused interior underscored BMW's commitment to quality and performance.

This comprehensive Service and Repair Manual provides in-depth technical information for all 1998 BMW E39 5-series models. It covers a vast array of maintenance procedures, from routine oil changes and fluid flushes to major component overhauls and complete engine or transmission rebuilds. Detailed diagnostic troubleshooting, electrical system analysis, and specific repair instructions for all major vehicle systems, including engine mechanicals, fuel, braking, suspension, and climate control, are included. This dealership technician-level manual is designed to assist owners, mechanics, and technicians in maintaining, diagnosing, and repairing the vehicle effectively, ensuring optimal performance and longevity.