This manual covers the Mercedes-Benz SL-Class, model code R230, for the 2005 model year. As a luxury grand tourer convertible, the R230 SL-Class is renowned for its advanced engineering, featuring a retractable hardtop (Vario-Roof), Active Body Control (ABC) suspension, and powerful engine options including the 5.0L V8 (M113), 5.4L Supercharged V8 (M113 ML), and 5.5L Bi-Turbo V12 (M275). These vehicles were produced in Bremen, Germany, and are recognized for their blend of performance, comfort, and sophisticated technology, positioning them as premium offerings in a competitive market alongside vehicles like the BMW 6 Series Convertible and Porsche 911 Carrera Cabriolet.

This comprehensive service and repair manual provides dealership-level diagnostic and repair procedures for all models and all repairs A-Z. It is designed to empower owners, independent repair shops, and automotive technicians by offering exact information for maintaining and repairing the vehicle. The manual covers a vast array of systems, including detailed instructions for engine diagnosis and repair across all variants, automatic transmission service, drivetrain components, the Active Body Control suspension, power steering, and the complex hydraulic brake systems like ABS, ESP, and SBC. Furthermore, it includes extensive coverage of the electrical system with wiring diagrams, climate control, body and chassis repairs, and the Vario-Roof mechanism, along with systematic troubleshooting guides and diagnostic procedures.