The 2006 Mercedes R-Class (W251) Service and Repair Manual is a comprehensive guide designed to help you maintain, service, diagnose, and repair your vehicle. This manual is not generic repair information; it's specifically tailored for the 2006 Mercedes R-Class (W251) and contains the same information used by technicians at dealerships. It provides complete step-by-step instructions, diagrams, illustrations, wiring schematics, and specifications for every aspect of your vehicle.

This manual covers a wide range of topics, including:

* **Maintenance:** Regularly scheduled maintenance procedures to keep your vehicle running smoothly.
* **Engine:** Detailed information on engine components, operation, troubleshooting, and repair.
* **Control System:** Guidance on electronic control systems, including diagnostics and repairs.
* **Mechanical:** Comprehensive coverage of mechanical systems, such as the transmission, suspension, brakes, and steering.
* **Fuel Service Specifications:** Precise details on fuel systems, including injectors, pumps, and lines.
* **Emission Control:** Information on emissions control systems and how to maintain and repair them.
* **Intake Exhaust Cooling:** Explanation of intake and exhaust systems and how to address issues.
* **Lube:** Lubrication requirements and procedures for various components.
* **Ignition Starting Charging:** Detailed coverage of the ignition, starting, and charging systems.
* **Auto Transmission Clutch:** Information on automatic transmission operation, maintenance, and repair.
* **Manual Transmission:** Comprehensive coverage of manual transmission operation, maintenance, and repair.
* **Transfer Propeller Shaft:** Details on the transfer case and propeller shaft systems.
* **Drive Shaft:** Information on drive shafts and related components.
* **Differential:** Explanation of differential operation, maintenance, and repair.
* **Axle Suspension:** Comprehensive coverage of axle and suspension systems, including troubleshooting and repair.
* **Tire & Wheel:** Information on tires, wheels, and related components.
* **Brake Control:** Details on the brake control system, including diagnostics and repairs.
* **Brake:** Comprehensive coverage of brake systems, including calipers, rotors, and pads.
* **Parking Brake:** Information on the parking brake system and its operation.
* **Steering Column:** Details on the steering column and its components.
* **Power Steering:** Guidance on power steering systems and related issues.
* **Air Condition:** Explanation of the air conditioning system, including diagnostics and repairs.
* **Suppl Restraint System:** Information on supplemental restraint systems, such as airbags.
* **Seat Belt:** Details on seat belt systems and their operation.
* **Engine Immobilizer:** Explanation of the engine immobilizer system and how to troubleshoot issues.
* **Cruise Control:** Details on the cruise control system and its operation.
* **Wiper & Washer:** Information on wiper and washer systems and their maintenance.
* **Door Lock:** Coverage of door lock and security systems.
* **Meter Audio/Visual:** Details on the instrument cluster, audio system, and visual displays.
* **Horn:** Information on the horn system and its operation.
* **Windshield/Glass Mirror:** Details on windshield, glass, and mirror replacement.
* **Instrument Panel:** Explanation of the instrument panel and its components.
* **Seat:** Comprehensive information on seat systems, including adjustments and repairs.
* **Engine Hood/ Door:** Information on the engine hood and doors, including opening and closing mechanisms.
* **Exterior & Interior:** Details on exterior and interior components, including trim, upholstery, and lighting.
* **Electrical:** Comprehensive coverage of electrical systems, including wiring diagrams and troubleshooting.
* **Multiplex/ Can Communication:** Explanation of multiplex and CAN communication systems.

With this manual, you'll have access to everything you need to confidently maintain and repair your 2006 Mercedes R-Class (W251).

The 2006 Mercedes-Benz R-Class (W251) was a groundbreaking vehicle that pushed the boundaries of luxury and practicality. Positioned as a crossover SUV with a distinct minivan-like design, the R-Class offered spacious seating for up to seven passengers while maintaining the sophisticated aesthetic and engineering prowess associated with Mercedes. Its distinctive design featured a long wheelbase and a boxy shape, providing ample cargo space and a high roofline for comfortable passenger access. Underneath the stylish exterior, the R-Class boasted a robust platform based on the Mercedes E-Class, offering a blend of performance and ride comfort. Available in various trim levels, including the R350, R500, and high-performance R63 AMG, the 2006 R-Class catered to a wide range of preferences, offering a choice of powerful V6 and V8 engines.

While the R-Class aimed to bridge the gap between SUV and minivan, its unconventional design and challenging driving dynamics faced some criticism. Despite its innovative features and robust engineering, the R-Class struggled to find its niche in the market. It was ultimately discontinued in 2017 after a decade-long run. Despite its limited market success, the 2006 Mercedes-Benz R-Class remains a fascinating example of how Mercedes experimented with different vehicle concepts, pushing the boundaries of luxury and practicality. This innovative vehicle offered a unique combination of features, targeting a specific segment of discerning drivers seeking a spacious, comfortable, and high-performance vehicle. The 2006 R-Class stands as a testament to Mercedes' continuous pursuit of innovation and excellence in automotive engineering, even when venturing into unconventional vehicle categories.