🏷️ Basic Information

Make:

Mercedes-Benz

Model:

S-Class

Model Code:

W221

Year:

2010

Chassis Code:

W221

👋 Introduction

Positioning:

The 2010 S-Class (W221) represented the pinnacle of Mercedes-Benz's luxury sedan offerings, competing directly with rivals like the BMW 7 Series, Audi A8, and Lexus LS.

Key Competitors 2010:

BMW 7 Series (F01/F02), Audi A8 (D3), Lexus LS (XF40), Porsche Panamera (970)

Luxury And Technology:

The W221 S-Class was renowned for its advanced technology, refined ride quality, opulent interior, and sophisticated safety features, setting benchmarks in the luxury segment.

Accuracy And Completeness:

This manual provides the exact, vehicle-specific information used by authorized Mercedes-Benz technicians, ensuring accuracy for diagnostics, maintenance, and repairs, far surpassing generic aftermarket guides.

📋 Manual Details

Models Covered:

All 2010 Mercedes-Benz S-Class (W221) variants, including S350, S450, S550, S600, S63 AMG, S65 AMG

Repair Scope:

Comprehensive A-Z repair coverage for all vehicle systems

Page Count:

Estimated 3000+ pages (typical for full factory service manuals)

Type:

Factory Service and Repair Manual

Language:

English

Format:

Digital (PDF)

📖 Manual Coverage

Powertrain:

Engine mechanicals, fuel, ignition, exhaust, cooling, lubrication, engine management systems (ECU), automatic transmissions, drivetrain (RWD/4MATIC)

Chassis:

Suspension (Airmatic, ABC), steering, brakes (ABS, ESP, SBC), wheels, tires

Body And Exterior:

Body structure, panels, doors, hinges, locks, glass, mirrors, exterior trim, convertible top (if applicable)

Interior:

Seating systems, upholstery, dashboard, interior trim, climate control, comfort features, interior lighting

Electrical:

Battery, charging system, starting system, lighting (headlights, taillights, interior), wiring diagrams, fuses, relays, multiplex communication (CAN bus), instrument cluster, infotainment system, power accessories (windows, seats, sunroof)

Comfort And Safety:

Climate control (THERMATIC/THERMOTRONIC), seat heating/ventilation, active multi-contour seats, ambient lighting, airbags, seatbelt systems, park assist, adaptive cruise control (DISTRONIC PLUS)

Maintenance:

Scheduled maintenance intervals, fluid changes (oil, coolant, brake fluid, transmission fluid), filter replacements (oil, air, cabin, fuel), spark plug replacement, belt inspections/replacement

Diagnostics And Troubleshooting:

Diagnostic trouble codes (DTCs), symptom-based troubleshooting, electrical system diagnosis, component testing

Repair And Replacement:

Component removal and installation procedures for all major systems, including engine overhaul, transmission rebuild, suspension component replacement, brake system repair, electrical component replacement

Specifications And Tolerances:

Torque specifications, clearances, alignment data, fluid capacities, pressure specifications, electrical specifications

Special Tools And Equipment:

Identification and usage of specialized tools required for specific repair procedures

Depth:

In-depth, factory-level technical information suitable for professional technicians and advanced DIY enthusiasts. Covers all aspects from basic maintenance to complete vehicle overhauls.

📊 Manual Specifications

Quality:

High-resolution scans with searchable text layers for easy navigation and information retrieval.

File Type:

PDF

Printability:

Printable pages for offline use and reference during repairs.

Binding Type:

N/A (Digital format)

Paper Type:

N/A (Digital format)

⚙️ Engine Specifications

S450 Engine:

4.7L V8 (M272/M273)

S550 Engine:

5.5L V8 (M273)

S600 Engine:

5.5L Twin-Turbo V12 (M275)

S63 Amg Engine:

6.2L V8 (M156)

S65 Amg Engine:

6.0L Twin-Turbo V12 (M275)

S550 Horsepower:

382 hp @ 6000 rpm

S550 Torque:

391 lb-ft @ 2800-4000 rpm

S600 Horsepower:

510 hp @ 5000 rpm

S600 Torque:

612 lb-ft @ 1800-3500 rpm

Fuel Delivery:

Electronic Fuel Injection (EFI), Sequential Multi-Port Fuel Injection (MPI)

Recommended Fuel:

Premium Unleaded (91 octane or higher recommended for most models)

🔧 Transmission

S450 S550:

7-speed automatic (722.9 '7G-TRONIC')

S600 S65 Amg:

5-speed automatic (722.6 '5G-TRONIC')

Drivetrain:

4MATIC All-Wheel Drive available on select models (e.g., S550 4MATIC)

Gear Selection:

Steering column shift lever (selector lever), manual mode via paddle shifters (optional/AMG models)

Transmission Fluid Type:

MB 236.14 (for 7G-TRONIC), MB 236.12 (for 5G-TRONIC - check specific model/year for exact spec)

📐 Dimensions

Length:

Approx. 5,097 mm (199.1 in) for standard wheelbase, 5,225 mm (205.7 in) for long wheelbase

Width:

Approx. 1,872 mm (73.7 in)

Height:

Approx. 1,473 mm (58.0 in)

Curb Weight:

Varies by model, approx. 1,800 - 2,100 kg (3,968 - 4,630 lbs)

Gross Vehicle Weight Rating:

Varies by model, typically around 2,450 - 2,700 kg (5,400 - 5,950 lbs)

🛡️ Safety Features

NHTSA Rating:

Generally achieved 5-star ratings in frontal and side crash tests where tested (specific model year ratings may vary).

IIHS Rating:

Typically awarded 'Top Safety Pick' status.

Driver Assistance Suite:

DISTRONIC PLUS (Adaptive Cruise Control), PRE-SAFE® Brake, Lane Keeping Assist, Blind Spot Assist, PARKTRONIC, BAS PLUS (Brake Assist System Plus)

Airbags:

Front airbags, side airbags, window curtain airbags, pelvic airbags (front and rear), active head restraints

Body Structure:

High-strength steel passenger cell, crumple zones

💡 Technology Features

Command System:

COMAND APS (Cockpit Management and Navigation) system with integrated navigation, radio, CD/DVD player, and Bluetooth connectivity. The 2010 refresh included an updated interface and hard drive-based navigation.

Active Safety Features:

Adaptive Cruise Control (DISTRONIC PLUS), Active Lane Keeping Assist, Active Blind Spot Assist, Night View Assist PLUS (optional)

Bluetooth Integration:

Standard Bluetooth hands-free calling and audio streaming capabilities.

Keyless Go:

Keyless ignition and access system (optional).

Harman Kardon Audio:

Optional high-fidelity Harman Kardon LOGIC 7 surround sound system.

🔧 Maintenance

Oil Change Interval:

Typically every 10,000 miles or 1 year, whichever comes first (varies by driving conditions and specific engine oil used, refer to manual for exact 'Service A' or 'Service B' schedules).

Major Service Intervals:

Brake fluid change every 2 years. Spark plugs typically every 60,000 - 100,000 miles depending on engine type. Transmission fluid and filter service typically around 40,000 - 60,000 miles (critical for 7G-TRONIC).

Engine Oil Spec:

MB 229.5 (e.g., Mobil 1 0W-40, Castrol Syntec 0W-30/5W-30). Consult manual for specific engine requirements.

Coolant Spec:

MB 325.0 or 326.0 (Glycol-based, blue color), typically a 50/50 mix with distilled water.

Power Steering Fluid Spec:

MB 343.0 or 001-989-24-03.

Air Suspension Components:

Airmatic or ABC suspension struts can leak or fail over time. Air compressor can also be a failure point.

Transmission Mechatronics:

The 7G-TRONIC transmission's mechatronic unit can develop electrical issues or premature wear, especially on earlier models if fluid changes are neglected.

Ignition Coils:

Misfires can occur due to failing ignition coils, particularly on V8 and V12 engines.

Harmonic Balancer:

The crankshaft harmonic balancer on certain V8 engines (M273) can degrade, leading to rattling noises and potential belt slippage.

Camshaft Timing Phasers:

Camshaft adjusters (phasers) on M272 V6 and M273 V8 engines can fail, leading to rough idling and check engine lights. The manual details diagnosis and replacement procedures.

📚 Vehicle History

Mercedes Benz Legacy:

Mercedes-Benz has a long-standing reputation for producing luxury vehicles with a focus on engineering excellence, comfort, and safety since its inception.

W221 Introduction:

The W221 generation of the S-Class was introduced in 2005 (for the 2006 model year) and represented a significant design and technological advancement over its predecessor (W220).

Mid-Cycle Refresh:

The W221 received a facelift for the 2010 model year, featuring updated styling, improved engines, and enhanced technology like LED daytime running lights and a revised infotainment system.

Production Years:

2005-2013 (W221 chassis)

🏆 Awards & Recognition

Previous Generation Awards:

The S-Class lineage consistently receives accolades for luxury, safety, and innovation, often including 'Car of the Year' awards from automotive publications in previous generations.

Safety Recognitions:

Consistent recognition from IIHS and NHTSA for its advanced safety features and structural integrity.

Luxury Segment Ranking:

Consistently ranked among the top luxury sedans for ride comfort, build quality, and technological integration by automotive critics.