The Mercedes-Benz 300SEL, chassis code W126, represents a pinnacle of luxury and engineering from the 1988-1991 production years. This model is celebrated for its robust construction, refined ride quality, and advanced features for its era, embodying Mercedes-Benz's commitment to durability and comfort. As a long-wheelbase variant, the 300SEL offers enhanced rear passenger space, making it an ideal choice for discerning owners who prioritize both performance and passenger accommodation. Its sophisticated design and technological innovations, including the M103 inline-six engine and advanced suspension systems, underscore its status as a distinguished luxury sedan.

This comprehensive workshop service repair manual provides factory-level detail for the Mercedes-Benz 300SEL (W126) from 1988-1991. It covers every aspect of maintenance, diagnosis, and repair, including detailed procedures for the engine, transmission, brakes, suspension, steering, and electrical systems. The manual is designed to assist owners, mechanics, and technicians in performing everything from routine scheduled maintenance, such as fluid changes and filter replacements, to complex component rebuilding and troubleshooting of known issues like wiring harness degradation or climate control actuator failures. With its extensive scope and depth, this resource ensures the optimal upkeep and longevity of your vehicle.