2008 Mercedes-Benz R-Class Operator's Manual (P/N 251 584 39 81)

• Covers 2008 Mercedes-Benz R-Class Luxury MPV models, including the R 320 CDI 4MATIC, R 350, R 350 4MATIC, and R 550 4MATIC in W251/V251 configurations.
• Official OEM publication (P/N 251 584 39 81, Edition A 2008) comprising 569 pages of factory reference data.
• Contains 47 detailed exploded-view diagrams, 16 multi-step warning notices, and 12 instrumentation-logic charts to aid in component identification prior to any mechanical repair.

Vehicle Systems and Operation Logic

This factory document serves as the definitive reference for understanding standard-equipment logic, optional features, and emergency-response protocols. For mechanics, DIY enthusiasts, and technicians, having immediate access to the original operational parameters accelerates diagnostic workflows and ensures a complete understanding of the vehicle before undertaking a complex repair.

The text details the operational logic for all primary systems within the W251/V251 chassis. It provides clear parameters for cockpit controls, instrument cluster indicators, and safety networks, including the SRS and OCS. Detailed sub-sections break down ignition sequences, transmission shifting characteristics, and the configurations for both 3-zone automatic and manual climate control systems.

Technical Specification Highlights

To support accurate maintenance, this manual outlines essential factory benchmarks. Maximum coolant temperature is strictly limited to 248°F (120°C) to prevent severe engine damage. Wheel bolt torque must be set to precisely 110 lb-ft (150 Nm) for secure attachment, and the total fuel tank capacity is 21.1 US gallons. Prioritize safety by verifying system depressurization and consulting appropriate diagnostic tools before interacting with critical engine components or high-voltage circuits.