Market Position:
The 2004 S55 AMG represented the pinnacle of Mercedes-Benz's luxury and performance offerings for that model year, targeting discerning buyers seeking a powerful, technologically advanced, and exquisitely appointed executive sedan.
Competitive Analysis:
Competed against other high-performance luxury sedans such as the BMW 7 Series (e.g., 745Li, 760Li), Audi A8 (e.g., 4.2 quattro, S8), and Jaguar XJR. The S55 AMG distinguished itself with its potent supercharged V8 engine and sophisticated Active Body Control suspension.
Key Features:
5.4L V8 Supercharged Engine, 5G-TRONIC automatic transmission, Active Body Control (ABC) suspension, Bi-Xenon headlamps, COMAND infotainment system, premium leather interior, advanced safety features, AMG-specific styling cues.
Coverage Areas:
All mechanical and electrical systems, bodywork, interior, diagnostics.
Page Count:
Estimated 1500+ pages (comprehensive software).
Manual Type:
Official Service and Repair Manual Software.
Format:
Software (Digital Download/CD-ROM).
Systems Covered:
Engine (M113 E55 ML V8 Supercharged), Transmission (5-speed automatic 5G-TRONIC), Suspension (ABC - Active Body Control), Brakes (ABS, ESP), Steering (Hydraulic Power Steering), Electrical System (CAN Bus architecture, Lighting, Instrumentation, HVAC, COMAND, SRS Airbag system), Fuel System (Supercharged induction, fuel injection), Cooling System, Exhaust System, Drivetrain (RWD), Body and Chassis, Interior Trim, Diagnostic Systems (OBD-II, STAR Diagnosis compatible procedures).
Procedures Included:
Routine maintenance, scheduled servicing, troubleshooting, diagnostic fault code interpretation, component removal and installation, repair procedures, system adjustments, wiring diagrams, torque specifications, exploded views, special tool requirements, complete engine rebuild, transmission overhaul, ABC system calibration, brake system service, electrical component diagnosis and repair.
Technical Depth:
Comprehensive, from basic maintenance and fluid changes to advanced electronic diagnostics and major mechanical overhauls. Includes detailed explanations of complex systems like Active Body Control and the supercharged engine management.
Standard Transmission:
5-speed Automatic (5G-TRONIC, 722.6).
Transmission Features:
TouchShift manual shifting capability, adaptive shift logic, Electronic Transmission Control.
Transmission Fluid Type:
MB Spec 236.12 or 236.14 (e.g., Mobil ATF 134, Pentosin ATF1).
NHTSA Front Crash Rating:
5-Star (for 2004 S-Class generation).
IIHS Side Crash Rating:
Good (for 2004 S-Class generation).
Active Safety Features:
Anti-lock Braking System (ABS), Electronic Stability Program (ESP), Brake Assist (BAS), Active Body Control (ABC) with automatic self-leveling and roll stabilization, Tire Pressure Monitoring System (TPMS).
Passive Safety Features:
Dual-stage front airbags, front side-impact airbags, front and rear side curtain airbags, front and rear head restraints, seatbelt pretensioners and force limiters, crumple zones.
Infotainment System:
COMAND (Cockpit Management and Navigation system) with integrated navigation, radio, CD player, and climate control. Optional Bose sound system.
Driver Assistance Features:
Cruise control (standard), optional Distronic (adaptive cruise control), Parktronic (parking assist sensors).
Connectivity Features:
Integrated phone preparation (optional), CAN Bus communication network for various electronic modules.
Comfort Features:
Multi-contour front seats with heating and ventilation, power-adjustable steering column, dual-zone automatic climate control, keyless go (optional), power closing doors and trunk.
Service Intervals:
Typically every 10,000 miles or 12 months for A Service (e.g., oil change), and every 20,000 miles or 24 months for B Service (more comprehensive inspection and fluid changes). Specific intervals for ABC hydraulic fluid, brake fluid, and coolant are crucial and detailed in the manual.
Engine Oil Specification:
API SN or ACEA A3/B4, viscosity grade SAE 0W-40 or 5W-40 (e.g., Mobil 1 0W-40, Mercedes-Benz Approved Synthetic).
Coolant Specification:
MB Spec 325.0 (Ethylene Glycol based, approved by Mercedes-Benz, typically blue color).
Brake Fluid Specification:
DOT 4 Plus (MB Spec 331.0).
Power Steering Fluid:
MB Spec 343.0 (Hydraulic Fluid).
Known Issues:
Active Body Control (ABC) system hydraulic leaks and pump failures, ignition coil failures, crank position sensor issues, EGS (electronic transmission control) module failures, blower motor resistor failure, rust on wheel wells and rocker panels (depending on climate/care).
Oil Filter Part Number:
Example: Mann-Filter HU 718/5 x or Mahle OX 403D.
Air Filter Part Number:
Example: Mann-Filter C 30 198/1.
Brand Heritage:
Mercedes-Benz has a long-standing reputation for luxury, engineering excellence, and automotive innovation, dating back to the invention of the automobile itself. The S-Class line represents the flagship sedan, embodying the brand's commitment to comfort, safety, and technology.
Model Evolution:
The W220 S-Class, introduced in 1998, replaced the W140. The S55 AMG was introduced later in the W220's lifecycle, offering a significant power upgrade over standard S-Class models, particularly with the supercharged V8 engine introduced for the 2003 model year.
Production Period:
W220 S-Class: 1998-2005. S55 AMG (supercharged): 2003-2005.
Manufacturing Locations:
Sindelfingen, Germany.
