Positioning:
Mid-size luxury sedan targeting professionals and those seeking refined German engineering.
Competitors:
BMW 3 Series (E46), Audi A4 (B6), Lexus IS300, Infiniti G35
Vehicle Appeal:
Comfort, build quality, brand prestige, advanced safety features for its era.
Value Proposition:
Provides authoritative, factory-level repair information, crucial for maintaining the longevity and performance of a luxury vehicle.
Primary Coverage:
Full Service and Repair
Secondary Coverage:
Diagnostics, Maintenance, Troubleshooting, Wiring Diagrams
Type:
Official Service and Repair Manual Software
Format:
Digital Software (likely searchable PDF or proprietary application)
Powertrain:
Engine (M112 E32 V6), Transmission (5G-TRONIC automatic), Drivetrain
Chassis:
Suspension (front/rear), Steering, Brakes (ABS, ESP), Wheels, Tires
Electrical:
Engine Control Unit (ECU), Body Control Module (BCM), Lighting, Power Accessories, CAN Bus Network, Diagnostics (OBD-II)
Body And Trim:
Exterior Panels, Interior Trim, Seats, Doors, Windows, Climate Control (HVAC)
Maintenance:
Scheduled Maintenance Intervals, Fluid Changes (oil, coolant, brake, transmission), Filter Replacements, Spark Plug Replacement
Repair:
Engine Component Overhaul, Transmission Repair, Brake System Overhaul, Suspension Component Replacement, Electrical Component Diagnosis and Replacement
Troubleshooting:
Diagnostic Trouble Codes (DTCs), Symptom-based Diagnostics, Electrical Circuit Tracing
Depth:
Comprehensive (from basic fluid checks to complete engine and transmission rebuilds, including detailed electrical schematics)
Type:
5-speed Automatic (5G-TRONIC)
Type:
N/A (C240 predominantly automatic)
Shift Modes:
Comfort (C) and Sport (S) modes
Fluid Type:
MB 236.10 or MB 236.12 ATF
Capacity Approx:
8.0 Liters (17 pints) for complete fill
NHTSA Front Impact Driver:
★★★★★
NHTSA Front Impact Passenger:
★★★★★
IIHS Front Small Overlap:
Good (for applicable years/testing methodology)
Active Safety:
Anti-lock Braking System (ABS), Electronic Stability Program (ESP), Traction Control System (ASR)
Passive Safety:
Frontal Airbags, Side Airbags (front), Side Curtain Airbags (front), Pretensioner seatbelts
Audio System:
COMAND (Cockpit Management and Navigation) System optional, with CD player, optional navigation, and premium sound systems (e.g., Bose).
Driver Aids:
Cruise Control, Rain-sensing wipers (optional), Automatic Climate Control (optional)
Interface:
Infrared remote for central locking, optional Tele Aid emergency calling system.
Oil Change Interval:
10,000 miles or 12 months, whichever comes first (with synthetic oil, as per Flexible Service System - FSS)
Major Service Interval:
30,000 miles (e.g., spark plugs, cabin filter, engine air filter, transmission fluid)
Engine Oil Type:
Mobil 1 Synthetic 0W-40 (MB 229.5 specification)
Coolant Type:
MB 325.0 (Glysantin G48) or equivalent OAT coolant
Brake Fluid Type:
DOT 4 (MB 331.0 specification)
Common Wear Items:
Ignition coils, Mass Air Flow (MAF) sensor, Crankshaft Position Sensor (CPS), Window regulators, Suspension bushings, Heater control valve, Crankshaft pulley/harmonic balancer.
Spark Plugs:
NGK IFR5N10 (2 per cylinder, 12 total) - typically replaced every 60,000-100,000 miles
Heritage Focus:
Pioneering automotive safety, engineering excellence, and luxury comfort.
Model Line:
Part of the W203 generation of the C-Class, which replaced the W202 and introduced a more modern design and technology.
Manufacturing Plants:
Bremen, Germany; Tuscaloosa, Alabama, USA
Generation W203 Years:
2000-2007
