🏷️ Basic Information

Make:

Mercedes-Benz

Model:

S-Class

Chassis Code:

W221

Model Year:

2007

👋 Introduction

Positioning:

The Mercedes-Benz S-Class W221 represents the pinnacle of luxury, technology, and comfort in the executive sedan segment, competing directly with rivals like the BMW 7 Series and Audi A8.

Competitors:

BMW 7 Series (E65/E66), Audi A8 (D3), Lexus LS (XF40), Porsche Panamera.

Design:

Elegant and imposing exterior design, spacious and opulent interior with high-quality materials, advanced COMAND infotainment system, and sophisticated ambient lighting.

Technology:

AIRMATIC adaptive air suspension, DISTRONIC PLUS adaptive cruise control, PARKTRONIC parking assist, NIGHT VIEW ASSIST, KEYLESS-GO, advanced climate control, and a highly integrated electronic architecture.

Audience:

Affluent individuals, business executives, and chauffeured occupants who prioritize luxury, comfort, safety, and cutting-edge automotive technology.

📋 Manual Details

Primary Coverage:

All mechanical, electrical, and body systems for the 2007 Mercedes-Benz S-Class W221

Engine Coverage:

Engine mechanical, fuel system, ignition, emission control, cooling, lubrication

Transmission Coverage:

Automatic transmission (7G-TRONIC), transaxle, control modules

Chassis Coverage:

Suspension (AIRMATIC), steering, brakes (ABS, ESP), wheels, tires

Electrical Coverage:

Body electronics, multiplex communication (CAN, LIN), instrument cluster, lighting, audio/navigation, comfort systems, diagnostics

Body Coverage:

Body panels, doors, windows, interior trim, safety restraint systems (SRS), climate control (HVAC)

Estimated Pages:

Extensive (typically 3,000+ pages for a comprehensive factory manual)

Type:

Factory Service Repair Workshop Manual

Language:

English (primary language for this product listing)

Format:

PDF Download

File Format:

PDF

Searchable Text:

Yes (typically, assuming OCR processing)

Printable:

Yes

Quality:

High-resolution, clear diagrams and text suitable for professional use.

Binding:

N/A (Digital Download)

Paper:

N/A (Digital Download)

📖 Manual Coverage

Powertrain:

Comprehensive coverage of engine mechanicals, fuel injection, ignition timing, emissions control systems (OBD-II), cooling system management, lubrication systems, and exhaust systems.

Driveline:

Detailed information on the 7-speed automatic transmission (7G-TRONIC), including torque converter, valve body, electronic control unit (TCU), fluid types, and diagnostic procedures. Coverage also extends to drive shafts, differentials, and axle components.

Chassis Suspension Steering:

In-depth explanation of the AIRMATIC dual control air suspension system, including compressor, air springs, valve blocks, pressure sensors, and ride height adjustment. Covers front and rear suspension components, steering gear, power steering system (hydraulic or electro-hydraulic), and wheel alignment specifications.

Braking System:

Detailed diagnostics and repair procedures for the Anti-lock Braking System (ABS), Electronic Stability Program (ESP), Brake Assist (BAS), and the SBC (Sensotronic Brake Control) system (if applicable to the specific 2007 model variant). Includes brake pad/rotor replacement, caliper service, hydraulic system bleeding, and sensor calibration.

Electrical Electronics:

Extensive wiring diagrams for all vehicle systems, including the Body Control Module (BCM), Gateway module, CAN bus network architecture, instrument cluster diagnostics, lighting systems (headlights, taillights, interior), power windows, seats, mirrors, infotainment system (COMAND), climate control electronics, and keyless-go systems.

Body Exterior Interior:

Procedures for body panel removal/installation, door mechanisms, hood and trunk operation, glass replacement, bumper repairs, interior trim removal, seat adjustments, and airbag system safety precautions.

Scheduled Maintenance:

Detailed service schedules for routine maintenance, including oil changes, filter replacements, fluid checks and top-offs, brake inspections, and tire rotations, with recommended intervals and specifications.

Diagnostic Troubleshooting:

Step-by-step diagnostic procedures for identifying and resolving common and complex faults, including fault code interpretation, symptom-based troubleshooting charts, and component testing methodologies.

Repair Replacement:

Comprehensive instructions for the removal, installation, and adjustment of virtually all vehicle components, from minor parts like spark plugs and bulbs to major assemblies like engines and transmissions.

Electrical Diagnostics:

Guidance on using diagnostic scan tools (like STAR Diagnosis), interpreting sensor data, checking electrical circuits, and troubleshooting complex electronic modules and wiring harnesses.

Torque Specifications:

Precise torque values for all critical fasteners, ensuring proper assembly and preventing damage.

Special Tools:

Identification of necessary special tools and equipment required for specific repair and maintenance procedures, often referencing Mercedes-Benz proprietary tools.

Depth:

Factory-level, covering everything from basic fluid changes to complete engine and transmission overhauls. Includes detailed schematics, diagrams, component locations, and precise specifications.

Diagnostic Capability:

Advanced diagnostic routines, system self-tests, component activation procedures, and adaptive value resets, mirroring the capabilities of professional diagnostic equipment.

⚙️ Engine Specifications

Engine Variants Covered:

Likely covers the M272 (3.5L V6), M273 (5.5L V8), and OM642 (3.0L V6 diesel) engines, depending on regional specifications. The manual is for the 2007 model year, which saw these engines widely deployed.

Engine Code Examples:

M272.970 (3.5L V6), M273.961 (5.5L V8), OM642.920 (3.0L V6 Diesel)

3.5L V6 (M272):

Approx. 268 hp @ 6000 rpm, 258 lb-ft @ 2400-5000 rpm

5.5L V8 (M273):

Approx. 382 hp @ 6000 rpm, 391 lb-ft @ 2800-4800 rpm

3.0L V6 Diesel (Om642):

Approx. 224 hp @ 3800 rpm, 369 lb-ft @ 1600-2600 rpm

Injection Type:

Sequential Multi-Port Fuel Injection (MPI) for gasoline, Common Rail Direct Injection (CRDI) for diesel.

Fuel Recommendation:

Premium Unleaded (91+ Octane) for gasoline engines, Diesel fuel (meeting EN 590 standards) for diesel engines.

Coolant Type:

Mercedes-Benz approved coolant (e.g., G48 or similar ethylene glycol-based, silicate-free concentrate mixed 50/50 with distilled water).

Oil Type:

Mercedes-Benz Approved Engine Oil (e.g., MB 229.5, MB 229.51 for gasoline; MB 229.51 or MB 229.52 for diesel).

Oil Capacity Approx:

Varies by engine, typically 8-9 liters (8.5-9.5 quarts) for V6 and V8 gasoline engines, and 8.5 liters (9 quarts) for the V6 diesel.

🔧 Transmission

Transmission Type:

7-speed Automatic Transmission (7G-TRONIC) for all gasoline and most diesel models.

Optional Transmission:

All-wheel drive (4MATIC) was optional on many W221 models.

Shift Modes:

Comfort (C), Sport (S), and Manual (M) shift modes selectable by the driver.

Transmission Fluid:

Mercedes-Benz Approved Automatic Transmission Fluid (ATF) (e.g., MB 236.10 or MB 236.14).

Capacity:

Approximately 7.5-9.5 liters (7.9-10 quarts) for a complete fluid service, depending on exact model and cooling circuit.

📐 Dimensions

Wheelbase Std:

3035 mm (119.5 inches)

Wheelbase Long:

3165 mm (124.6 inches) (Long-wheelbase variants)

Length Std:

5075 mm (199.8 inches)

Length Long:

5205 mm (204.9 inches) (Long-wheelbase variants)

Width:

1872 mm (73.7 inches)

Height:

1473 mm (58.0 inches)

Curb Weight Approx:

Starting around 1850 kg (4079 lbs) for V6 models, up to 2000+ kg (4400+ lbs) for V8 and 4MATIC models.

Gross Vehicle Weight Rating:

Varies by model, typically 2500-2700 kg (5511-5952 lbs).

Trunk Volume:

Approximately 560 liters (19.8 cubic feet) for standard wheelbase models.

🛡️ Safety Features

NHTSA Rating Example:

While official NHTSA ratings for specific W221 model years can vary by market, Mercedes-Benz vehicles of this era typically achieved excellent crash test performance, often 5-star ratings in frontal and side impact tests.

IIHS Rating Example:

Similar to NHTSA, the W221 was engineered with advanced safety structures and often received Top Safety Pick awards or equivalent commendations.

Active Safety Systems:

ABS, ESP (Electronic Stability Program), BAS (Brake Assist), Active Front Head Restraints (NECK-PRO), Tire Pressure Monitoring System (TPMS), Pre-Safe® anticipatory safety system.

Driver Assistance Systems:

DISTRONIC PLUS (Adaptive Cruise Control with Collision Prevention Assist), PARKTRONIC (Parking Assist), LANE KEEPING ASSIST, BLIND SPOT ASSIST, NIGHT VIEW ASSIST.

Airbags:

Dual-stage front airbags, front side airbags, rear side airbags, window airbags (curtain), and optional rear-seat airbags. Advanced occupant sensing technology.

Body Structure:

High-strength steel body structure with crumple zones designed for maximum occupant protection in collision scenarios.

💡 Technology Features

Comand System:

Covers the COMAND (Cockpit Management and Navigation) system, including navigation, radio, CD/DVD changer, Bluetooth connectivity, and media interface (e.g., AUX, iPod integration).

Harman Kardon Audio:

Details regarding the premium Harman Kardon Logic 7 surround sound audio system, including amplifier location and connections.

Distronic Plus:

Operation, calibration, and troubleshooting of the adaptive cruise control system, including its radar sensors and integration with the braking system.

Night View Assist:

Information on the infrared-based night vision system, its camera, and display integration.

Can Bus Network:

Detailed explanations of the vehicle's multiplexed communication networks (CAN-B, CAN-C, LIN) and their role in inter-module communication. Essential for diagnosing electronic faults.

Bluetooth Telephony:

Information on pairing mobile phones for hands-free calling via the COMAND system.

🔧 Maintenance

Oil Change Interval:

Typically every 10,000 miles (16,000 km) or 12 months, whichever comes first, under normal driving conditions. Extended intervals up to 15,000 miles (24,000 km) may be possible with specific approved synthetic oils and driving patterns.

Transmission Service Interval:

Recommended every 40,000 to 60,000 miles (64,000 to 96,000 km) for a fluid and filter change. This is crucial for the longevity of the 7G-TRONIC transmission.

Brake Fluid Change:

Recommended every 2 years, regardless of mileage, due to hygroscopic nature of brake fluid.

Coolant Service:

Mercedes-Benz coolant typically has a long service life, but a flush and refill is often recommended around 50,000-60,000 miles (80,000-96,000 km) or every 5 years.

Engine Oil Spec:

MB 229.5 (e.g., Mobil 1 0W-40, Castrol EDGE 0W-40) or MB 229.51 (low SAPS for diesel particulate filters) is critical.

Transmission Fluid Spec:

MB 236.10 or MB 236.14 specification ATF is mandatory for the 7G-TRONIC transmission. Using incorrect fluid can cause severe damage.

Coolant Spec:

Mercedes-Benz specified coolant concentrate (e.g., A000989282510) mixed 50/50 with distilled water. Do not use tap water.

Brake Fluid Spec:

DOT 4 PLUS (MB 331.0 specification) is typically recommended.

Airmatic Suspension:

Leaking air springs, compressor failure, or valve block issues can lead to ride height problems. The manual covers diagnostics and repair for these components.

Ignition Coils Spark Plugs:

Misfires can occur on the M272 V6 engines, often due to failing ignition coils or spark plugs. The manual provides replacement procedures and diagnostic steps.

Transmission Control Module:

Occasional issues with the transmission control module (TCU) can lead to shifting problems. The manual details troubleshooting and potential component replacement.

Balance Shaft Wear M272:

Early M272 engines had issues with balance shaft wear, leading to rough running and check engine lights. While this is more prevalent in earlier model years, the manual would cover diagnosis related to engine timing and sensors.

Seat Module Failures:

Malfunctions in seat control modules can lead to inoperative power seat adjustments or heating/cooling functions. The manual provides wiring diagrams and diagnostic paths.

📚 Vehicle History

Mercedes Benz Legacy:

Mercedes-Benz has a long and distinguished history of producing luxury vehicles, with the S-Class lineage representing the company's flagship sedan for decades, consistently pushing boundaries in automotive engineering and innovation.

W221 Generation:

The W221 S-Class, introduced for the 2006 model year, succeeded the W220. It marked a significant step forward in design, technology, and safety, introducing features like AIRMATIC, DISTRONIC PLUS, and the sophisticated COMAND infotainment system.

Production Years:

W221 production ran from 2005 (for the 2006 model year) through 2013.

Manufacturing Locations:

Primarily manufactured at Mercedes-Benz's Sindelfingen plant in Germany.

🏆 Awards & Recognition

Car Of The Year Awards:

While specific awards for the 2007 model year might vary, the S-Class lineage consistently receives accolades for luxury, safety, and innovation from automotive publications worldwide.

Safety Awards:

The W221's advanced safety features and structural integrity contributed to strong safety performance and recognition from safety organizations.

Luxury Vehicle Rankings:

Consistently ranked among the top luxury sedans by automotive critics and consumer satisfaction surveys for its ride quality, comfort, and refinement.