Segment:
Compact Executive Sedan
Brand Perception:
Premium, luxury, performance, advanced technology
Key Competitors:
BMW 3 Series, Audi A4, Lexus IS, Infiniti G35/G37
Design:
Modern styling, refined interior, hallmark Mercedes-Benz build quality.
Performance:
Smooth V6 power delivery, comfortable yet engaging ride.
Technology:
Advanced infotainment options (COMAND), driver assistance systems.
Benefit:
Empowers owners and technicians with official, detailed information for accurate diagnosis and repair, reducing labor costs and ensuring proper maintenance.
Engine Coverage:
3.0L V6 (M272)
Transmission Coverage:
7G-TRONIC 7-Speed Automatic
Major Systems Coverage:
Engine, Transmission, Drivetrain, Brakes, Suspension, Steering, Electrical, HVAC, Bodywork, Interior, Safety Systems, Diagnostics
Estimated Page Count:
1500+
Type:
Official Service and Repair Manual Software
Format:
Software/Digital (likely PDF or proprietary executable)
Engine Mechanical:
Complete overhaul procedures, component testing, timing, valve adjustment, cooling system, lubrication system.
Engine Electrical:
ECU diagnostics, sensor testing (MAF, O2, crankshaft, camshaft), ignition system, fuel injection system.
Transmission Automatic:
Diagnosis, fluid service, valve body testing, torque converter, electronic control unit (TCU).
Drivetrain:
Front/rear differential, axles, driveshafts, CV joints, AWD system (if applicable).
Brakes:
ABS, ESP, brake fluid service, caliper/rotor replacement, hydraulic system diagnosis.
Suspension:
Struts, shock absorbers, control arms, bushings, wheel alignment specifications.
Steering:
Power steering system, steering rack, tie rods, steering column.
Electrical Body:
Lighting systems, power windows, mirrors, locks, wipers, horn, body control module (BCM).
HVAC:
Compressor, evaporator, condenser, blower motor, climate control module, refrigerant handling.
Safety Restraint System:
Airbag system diagnosis, SRS module, seatbelt mechanisms.
Maintenance:
Oil changes, filter replacements, spark plug replacement, fluid checks and top-offs, belt inspection/replacement.
Diagnostics:
Troubleshooting guides, fault code interpretation (OBD-II), component testing procedures, wiring diagrams.
Repair:
Detailed step-by-step instructions for component removal, installation, and overhaul of all major systems.
Adjustment:
Wheel alignment, steering column adjustments, headlight aim.
Calibration:
Throttle body calibration, steering angle sensor calibration, tire pressure monitoring system (TPMS) relearn.
Special Tools:
Identification and usage of Mercedes-Benz specific tools required for various procedures.
Depth:
Comprehensive, covering basic maintenance to complete engine and transmission rebuilds, including electrical troubleshooting and module programming guidance.
Transmission Type:
722.6 (7G-TRONIC)
Drive Type:
Rear-Wheel Drive (RWD) / 4MATIC All-Wheel Drive (AWD)
Shifting Modes:
Comfort (C), Sport (S), Manual (M)
Transmission Fluid Type:
MB Spec 236.14 (e.g., Pentosin ATF134)
Transmission Fluid Capacity:
Approx. 7.5 - 9.0 Liters (dry fill, varies with torque converter drain)
NHTSA Front Crash Rating:
5 Stars
NHTSA Side Crash Rating:
5 Stars
IIHS Top Safety Pick:
Yes
Stability Control:
Standard Electronic Stability Program (ESP)
Traction Control:
Standard Traction Control System (TCS)
Braking System:
Anti-lock Braking System (ABS), Brake Assist (BAS)
Airbags:
Dual front, front side-impact, front and rear head curtain airbags.
System Name:
COMAND APS (optional)
Features:
Navigation, AM/FM/CD/MP3, auxiliary input, Bluetooth connectivity (optional).
Pre Safe System:
Predictive occupant protection system that prepares the vehicle for a potential collision.
Adaptive Cruise Control:
DISTRONIC PLUS (optional, functionality varies)
Parking Assistance:
PARKTRONIC (optional front and rear parking sensors)
Telematics:
Mercedes-Benz Tele Aid (emergency calling and assistance, subscription-based)
Oil Change Interval:
Typically every 10,000 miles or 12 months (whichever comes first), depending on driving conditions and specific Mercedes-Benz recommendations.
Major Service A:
Approx. 10,000 miles: Synthetic oil and filter change, tire rotation, comprehensive inspection.
Major Service B:
Approx. 20,000 miles: Includes Service A items plus cabin air filter replacement, brake system inspection, suspension component check.
Transmission Fluid Service:
Recommended around 60,000 - 80,000 miles or per manufacturer's specific service schedule.
Engine Oil Type:
SAE 0W-40 or 5W-40 Synthetic, MB-Approval 229.5
Engine Oil Capacity:
8.5 US quarts (8.0 Liters)
Coolant Type:
Mercedes-Benz Approved Antifreeze/Coolant (e.g., MB 325.0 or 326.0, typically a blue silicate-free OAT)
Brake Fluid Type:
DOT 4 Plus (MB Spec 331.0)
M272 Engine Timing Plugs:
Some earlier M272 engines experienced polymer camshaft timing adjusters (sprockets) wear, leading to timing chain rattle. The 2009 model year is generally less affected than earlier iterations, but inspection is recommended.
Transmission Conductor Plate:
The conductor plate within the 722.6 transmission can develop faulty connections, leading to shifting issues. The manual provides diagnostic steps for this common component.
HVAC Blend Door Actuators:
Failure of HVAC blend door actuators can result in incorrect temperature control or air direction. Diagnosis and replacement procedures are covered.
Brand Focus:
Pioneering automotive safety, engineering excellence, luxury vehicles.
W204 Generation Start:
2007
W204 Generation End:
2014
C300 Introduction:
Introduced for the 2008 model year, replacing the C280 and C350 models (in some markets) with the new M272 3.0L V6.
Manufacturing Locations:
Sindelfingen, Germany; Tuscaloosa, Alabama, USA; East London, South Africa
