Engine Mechanical:
Complete teardown, inspection, and reassembly of all engine variants (e.g., M271, M112, M272, OM646, OM647, OM648)
Engine Electrical:
Engine control modules (ECM), ignition systems, fuel injection systems, sensors, actuators, wiring diagrams
Transmission Mechanical:
Service and repair of automatic transmissions (e.g., 722.6, 722.9) and manual transmissions (where applicable)
Transmission Electrical:
Transmission control modules (TCM), shift solenoids, sensors, wiring diagrams
Braking System:
Hydraulic and electronic braking systems, ABS, ESP, SBC (Sensotronic Brake Control) for applicable models, brake pad and rotor replacement, caliper service
Suspension Steering:
Front and rear suspension components, shock absorbers, springs, control arms, power steering systems, alignment specifications
Electrical Systems:
12V electrical system, battery, alternator, starter, lighting systems, fuses, relays, body control modules (BCM), comfort systems
HVAC System:
Climate control systems, A/C compressor, refrigerant, heater core, blower motor, diagnostic procedures
Body And Interior:
Body panel removal and installation, door mechanisms, interior trim, seating systems, airbags, body integrity
Chassis And Frame:
Structural components, chassis rigidity, mounting points
Diagnostic Systems:
OBD-II diagnostics, trouble codes (DTCs), Mercedes-specific diagnostic tools (e.g., STAR Diagnosis) procedures
Maintenance Procedures:
Routine inspections, oil and filter changes, spark plug replacement, air filter replacement, fluid checks and top-offs
Repair Procedures:
Engine component replacement (e.g., water pump, thermostat, fuel injectors), transmission service, brake caliper rebuild, suspension component replacement, starter/alternator replacement
Troubleshooting Guides:
Systematic diagnostic trees for common malfunctions, symptom-based troubleshooting
Technical Specifications:
Torque specifications for all fasteners, clearance specifications, timing specifications
Wiring Diagrams:
Comprehensive electrical wiring schematics for all vehicle systems
Special Tool Requirements:
Identification and use of specialized Mercedes-Benz tools for specific repair procedures
Recalibration Procedures:
Procedures for recalibrating sensors and modules after component replacement (e.g., throttle body, steering angle sensor)
Depth:
Factory-level diagnostic and repair procedures
Detail Level:
Step-by-step instructions with detailed diagrams and illustrations
Engine Options 2004:
E320 (3.2L Diesel V6), E350 (3.7L V6), E500 (5.0L V8), E55 AMG (5.4L Supercharged V8), E200 Kompressor (2.0L Supercharged I4), E240 (2.6L V6), E270 CDI (2.7L Turbo Diesel I5), E320 CDI (3.2L Turbo Diesel I6)
E55 Amg Horsepower:
469 hp @ 6100 rpm
E55 Amg Torque:
516 lb-ft @ 2650 rpm
Fuel Injection Type:
Sequential Multi-Point Fuel Injection (MPI) or Common Rail Direct Injection (CDI) for diesel
Common Gasoline Engines:
M112 (V6), M272 (V6), M113 (V8), M113 ML (Supercharged V8)
Common Diesel Engines:
OM646 (I4), OM647 (I5), OM648 (I6)
NHTSA Front Impact Driver:
5 Stars
NHTSA Front Impact Passenger:
5 Stars
IIHS Front Offset Crash Rating:
Good
Traction Control:
ASR (Acceleration Slip Regulation) / ESP (Electronic Stability Program)
Braking Assistance:
BAS (Brake Assist System), SBC (Sensotronic Brake Control) on applicable models
Airbag Systems:
Front airbags, side airbags, window airbags, optional thorax airbags
Seat Belt Pretensioners:
Standard on front seats
Oil Change Interval:
Typically every 10,000 miles or 1 year, whichever comes first (depending on driving conditions and oil type, often dictated by 'Assyst' service reminder system).
Major Service Interval:
Service B (around 20,000 miles or 2 years) and Service C (around 30,000 miles or 3 years), alternating and dependent on vehicle usage, includes more extensive checks and fluid changes.
Engine Oil Specification:
MB 229.5 (for gasoline engines) or MB 229.51/228.51 (for diesel engines with DPF), typically 0W-40 or 5W-40 synthetic.
Transmission Fluid Type:
MB 236.14 (for 7G-TRONIC 722.9 transmissions) or MB 236.10 (for 5-speed 722.6 transmissions).
Coolant Specification:
MB 325.0 or MB 326.0 (Antifreeze/Coolant, blue color) - typically a 50/50 mix with distilled water.
Brake Fluid Specification:
DOT 4 Plus (MB 331.0)
Common Issue Sbc Failure:
Sensotronic Brake Control (SBC) hydraulic unit can fail, leading to 'Visit Workshop' messages and loss of braking function. Requires specialized diagnostics and replacement.
Common Issue Oil Cooler Leaks:
Oil cooler seals and lines can develop leaks, particularly on the M112 and M113 V6/V8 engines.
Common Issue Ecosystem Failures:
Various sensors (e.g., crankshaft position, camshaft position) and electronic modules can fail, often requiring diagnostic scanning to pinpoint.
Common Issue Suspension Components:
Worn control arm bushings, ball joints, and strut mounts can lead to noise and handling issues, especially on higher mileage vehicles.
Brand Legacy:
Mercedes-Benz has a long-standing reputation for automotive engineering excellence, safety, and luxury since its inception.
W211 Introduction:
The W211 generation of the E-Class was introduced in 2002 for the 2003 model year, replacing the W210. The 2004 model year represents an early production year of this generation.
Design Influence:
Carried over the four-headlight design language from its predecessor, but with a more modern interpretation.
Production Locations:
Primary assembly in Sindelfingen, Germany, with additional production in other global facilities.
