This comprehensive service and repair manual covers all models of the 2006-2012 Mercedes R-Class (W251), providing you with the same detailed information used by technicians at dealerships to maintain, service, diagnose, and repair your vehicle.

The manual offers complete step-by-step instructions, diagrams, illustrations, wiring schematics, and specifications to help you confidently tackle any repair. It includes everything from basic maintenance to complex engine repairs, covering topics such as:

* **Engine**: Detailed information on all engine types, including specifications, troubleshooting, and repair procedures.
* **Transmission**: Comprehensive coverage of both automatic and manual transmissions, including clutch and gearbox repair.
* **Drivetrain**: Detailed information on the transfer case, propeller shaft, drive shafts, differentials, and axles.
* **Suspension**: Instructions for servicing and repairing all suspension components, including shocks, struts, springs, and control arms.
* **Brakes**: Covers all aspects of the braking system, including disc and drum brakes, parking brakes, and brake control systems.
* **Steering**: Detailed instructions for repairing the steering column, power steering system, and related components.
* **Electrical Systems**: Extensive coverage of electrical systems, including wiring diagrams, multiplex/CAN communication, and troubleshooting procedures.
* **Air Conditioning System**: Information on servicing and repairing the air conditioning system, including refrigerant charging procedures.
* **Body and Interior**: Covers repairs and adjustments for all body panels, interior components, seats, and trim.
* **Safety Systems**: Detailed information on the supplemental restraint system (SRS), seat belts, engine immobilizer, and cruise control.
* **Other Systems**: Covers the wiper and washer system, door locks, meter and audio/visual systems, horn, windshield and glass, mirrors, instrument panel, and more.

This manual is designed to be user-friendly, with clear and concise instructions, making it easy to find the information you need. Print the pages and diagrams you require, ensuring you always have the necessary information at hand.

The Mercedes-Benz R-Class (W251) is a luxury crossover SUV that was produced from 2006 to 2012. It was the first model to be classified as a "Sport Tourer" by Mercedes-Benz, encompassing elements of both a luxury minivan and a crossover SUV. The R-Class was designed to offer a spacious and versatile interior with seating for up to seven passengers, along with a comfortable and luxurious driving experience. It was available in a variety of configurations, including rear-wheel drive (RWD) and all-wheel drive (AWD) models, as well as gasoline and diesel engine options. The R-Class was designed to compete with other luxury SUVs and minivans, such as the BMW X5, Audi Q7, and Toyota Sienna.

The Mercedes R-Class (W251) was praised for its spacious and comfortable interior, high-quality materials, and smooth and refined driving experience. It also offered a variety of advanced features, such as a panoramic sunroof, a premium sound system, and a navigation system. However, the R-Class was criticized for its somewhat bulky design and its high price. Sales were also low compared to its competitors, and ultimately, the R-Class was discontinued in 2012 due to lackluster sales. Despite its short life cycle, the R-Class represented a unique and innovative approach to the luxury SUV market, offering a blend of spaciousness, comfort, and luxury that appealed to a niche market of discerning customers.