🏷️ Basic Information

Make:

Mercedes-Benz

Model:

R-Class

Model Code:

W251

Year:

2006

Chassis Code:

W251

Product Name:

2006 Mercedes R-Class (W251) Service and Repair Manual

👋 Introduction

Target Audience:

Mercedes-Benz R-Class (W251) owners, DIY mechanics, and independent repair shops seeking comprehensive factory-level repair data.

Vehicle Segment:

The R-Class is a unique 'Grand Sports Tourer' that bridged the gap between SUVs, minivans, and station wagons.

Value Proposition:

Provides the exact same authoritative information used by Mercedes-Benz dealerships, offering a significant cost-saving alternative to professional repair services for complex tasks.

Data Authenticity:

Authentic factory service manual content, not generic information.

Ease Of Use:

Single, easy-to-use PDF manual with printable pages and ability to enlarge diagrams.

Completeness:

Covers all models and all repairs A-Z, with comprehensive step-by-step instructions, diagrams, illustrations, wiring schematics, and specifications.

Practical Application:

Empowers users to perform repairs themselves, fostering self-sufficiency and understanding of their vehicle.

📋 Manual Details

Coverage Scope:

All models and all repairs A-Z

Page Count:

Not specified, but implied to be comprehensive for all repairs.

Manual Type:

Factory Service and Repair Manual

Language:

English

Format:

PDF

Digital Requirements:

Adobe PDF Reader and Winzip (free online)

Compatibility:

Windows Vista 32/64, XP, ME, 98, NT, 2000, and Mac

Digital Delivery:

Delivered as a digital download.

Software Requirements:

Requires Adobe PDF Reader and Winzip.

📖 Manual Coverage

Engine Systems:

Engine maintenance, diagnostics, repair, fuel service specifications, emission control, intake, exhaust, cooling, lube, ignition, starting, charging.

Transmission Systems:

Automatic transmission, clutch, manual transmission, transfer propeller shaft, drive shaft, differential, axle.

Chassis Systems:

Suspension, tire & wheel, brake control, brake, parking brake, steering column, power steering.

Electrical Systems:

Electrical, multiplex/CAN communication, supplemental restraint system (SRS), seat belt, engine immobilizer, cruise control, wiper & washer, door lock, meter audio/visual, horn, instrument panel.

Body Systems:

Air conditioning, interior, exterior, engine hood/door, seat, windshield/glass mirror.

Interior Systems:

Detailed coverage of interior components, including seats, door locks, and potentially climate control interfaces.

Exterior Systems:

Exterior body panels, hood, doors, and glass/mirrors are covered.

Air Conditioning System:

Complete coverage of the air conditioning system, including refrigerant handling, component repair, and diagnostics.

Repair Procedures:

Complete step-by-step repair instructions for all systems.

Diagnostic Procedures:

Diagnosis of faults and troubleshooting.

Maintenance Procedures:

Routine maintenance and servicing.

Wiring Schematics Coverage:

Includes wiring schematics for complete electrical system diagnosis and repair.

Technical Detail Level:

Factory highly detailed, exact same information used by dealership technicians, including wiring schematics and illustrations.

📊 Manual Specifications

File Type:

PDF

Searchability:

Implied searchable due to PDF format and digital nature.

Download Speed:

Speed Download

Page Layout:

Designed for efficient printing of specific pages or diagrams.

Printability:

All pages are printable, allowing for enlarged images and selected page printing.

Binding:

Digital - no physical binding.

Paper Type:

N/A (digital format).

⚙️ Engine Specifications

Engine Options Covered:

The manual is for the 2006 R-Class (W251). Specific engine variants are not detailed in the product description, but it covers engine maintenance, fuel, emissions, cooling, lubrication, ignition, starting, and charging systems, implying coverage for the engines offered in the 2006 model year R-Class, likely including V6 and V8 gasoline and possibly diesel variants common for Mercedes-Benz at that time (e.g., M272 V6, M273 V8).

Performance Data:

Detailed performance specifications (horsepower, torque) are not explicitly listed in the product description, but are typically found within factory service manuals for specific engine variants.

Fuel System Coverage:

Fuel Service Specifications are explicitly covered, indicating detailed information on fuel delivery, injection systems, and associated components.

Engine Control Module Coverage:

Engine Control System diagnostics and repair are explicitly listed, indicating coverage of engine management systems, sensors, and actuators.

Cooling System Coverage:

Cooling system maintenance, diagnostics, and repair, including radiators, thermostats, and water pumps.

🔧 Transmission

Transmission Type:

Coverage includes automatic transmissions, clutch systems, and manual transmissions, though the R-Class was primarily known for its automatic transmissions. Manual transmission coverage might be for specific variants or less common configurations.

Transfer Case Coverage:

Transfer propeller shaft is listed, indicating coverage for drivetrain components, likely related to all-wheel-drive (4MATIC) systems if equipped.

Transmission Fluid Specs:

While not explicitly detailed in the product description, a comprehensive service manual would include specifications for transmission fluids (e.g., ATF types like MB 236.10, MB 236.12 for 7G-TRONIC).

Drive Shaft Coverage:

Transfer propeller shaft and drive shaft components are included in the coverage.

Differential Coverage:

Differential maintenance and repair procedures are included.

📐 Dimensions

Body Styles Covered:

The W251 R-Class was offered in standard and long-wheelbase variants. The manual covers all models, implying both configurations are detailed.

Wheel Bolt Pattern:

Wheel bolt patterns (likely 5x112 for Mercedes-Benz vehicles of this era) are usually specified in wheel and tire sections.

Weight Specifications:

Weight specifications (curb weight, GVWR) are typically included in service manuals for diagnostic and load-related purposes, although not explicitly stated in the product description.

Cargo Area Specifications:

While not explicit, interior and exterior coverage would likely include cargo area access and related components.

🛡️ Safety Features

Safety Systems Coverage:

Supplemental Restraint System (SRS) and Seat Belt are explicitly listed, indicating detailed coverage of passive safety features and their repair.

Active Safety Components:

Coverage of Brake Control, Parking Brake, and potentially ABS/ESP components (implied by 'Brake Control') suggests detailed information on active safety systems.

Brake System Details:

Detailed coverage of hydraulic and mechanical braking systems, including caliper, rotor, and fluid service.

Passive Safety Components:

Air conditioning, door locks, and interior/exterior components are listed, which indirectly relate to occupant comfort and safety features.

Engine Immobilizer Coverage:

Engine Immobilizer system coverage is included, vital for diagnosing security and starting issues.

💡 Technology Features

Audio Visual Systems:

Meter Audio/Visual systems are listed, indicating coverage for the infotainment and instrument cluster components, including diagnostics and repair.

Instrument Panel Coverage:

Instrument panel diagnostics and repair are explicitly listed, covering gauges, warning lights, and related circuitry.

Cruise Control Coverage:

Cruise Control is explicitly mentioned, suggesting detailed diagnostic and repair information for this system.

Wiper Washer Coverage:

Wiper and washer system maintenance and repair are explicitly listed.

Multiplex Communication:

Multiplex/CAN Communication systems are covered, which is critical for diagnosing issues within the complex network of electronic control units (ECUs) in modern Mercedes-Benz vehicles.

🔧 Maintenance

Maintenance Schedule Coverage:

The manual covers maintenance, implying detailed service intervals for various components and fluids, adhering to Mercedes-Benz's prescribed schedules (e.g., Service A and Service B intervals).

Engine Oil Specification:

While not explicitly stated, factory manuals will specify the correct engine oil grades (e.g., MB 229.5, MB 229.51) and viscosities (e.g., 0W-40, 5W-40) based on engine type and climate.

Coolant Specification:

Coolant specifications (e.g., MB 325.0, MB 326.0) for the cooling system will be detailed.

Brake Fluid Specification:

Brake fluid specifications (e.g., DOT 4 Plus, MB 331.0) will be provided.

Transmission Fluid Capacity:

Fluid capacities for various components, including the transmission, would be detailed in the manual.

Power Steering Fluid:

Power steering fluid specifications and maintenance procedures are typically covered.

Common Faults Diagnosis:

The comprehensive diagnostic and repair procedures inherently address common issues experienced by the W251 platform, such as potential issues with air suspension (if equipped), ignition coils, fuel injectors, and certain electronic modules.

Common Wear And Tear:

The manual's comprehensive nature implies detailed information on diagnosing and replacing common wear items such as brake pads, suspension components, and filters.

📚 Vehicle History

Brand History Context:

Mercedes-Benz has a long-standing reputation for luxury, engineering, and safety, which is reflected in the detailed nature of its service documentation.

R Class Introduction:

The W251 R-Class was introduced in 2005 as a 'Grand Sports Tourer' (GST), aiming to blend SUV practicality with minivan space and sedan comfort. The 2006 model year represents an early iteration of this unique platform.

Manufacturing Location:

The R-Class (W251) was primarily manufactured in Tuscaloosa, Alabama, USA.

🏆 Awards & Recognition

R Class Recogntions:

While specific awards for the 2006 R-Class are not detailed in the product description, the platform was noted for its innovation in segmenting the luxury vehicle market. The manual itself is a testament to the brand's commitment to technical documentation standards.