Segment:
Executive Sedan / Mid-size Luxury Sedan
Target Audience:
Luxury car buyers seeking comfort, performance, and advanced technology.
Key Competitors:
BMW 5 Series, Audi A6, Lexus GS, Jaguar XF, Cadillac CTS.
Design Philosophy:
Introduction of the W212 generation marked a return to more classic, 'formal' styling compared to its predecessor.
Technology Integration:
Emphasis on safety, comfort, and advanced driver assistance systems.
Engine Service:
Engine mechanical, cooling, lubrication, fuel, ignition, emission control systems.
Transmission Service:
Automatic transmission diagnostics, repair, and maintenance.
Drivetrain Service:
Driveshaft, differential, axles, and wheel bearings.
Suspension And Steering:
Front and rear suspension components, steering gear, power steering system.
Brake System:
Hydraulic braking system, ABS, ESP, brake pads, rotors, calipers, lines.
Electrical System:
Battery, charging system, starter, lighting, body control modules, wiring diagrams.
Climate Control:
HVAC system, A/C operation, heater, climate control module.
Body And Interior:
Body panels, doors, locks, windows, seats, trim, airbags.
Diagnostic Troubleshooting:
Fault codes, diagnostic procedures, troubleshooting trees for all systems.
Routine Maintenance:
Oil changes, filter replacements, fluid checks, belt inspections, spark plug replacement.
Component Replacement:
Detailed procedures for replacing major and minor components across all systems.
Rebuilding Procedures:
Engine and transmission rebuilding, suspension component overhauls.
Diagnostics And Testing:
Step-by-step diagnostic routines and component testing procedures.
Calibration And Adjustment:
Alignment procedures, throttle body adaptation, sensor calibration.
Depth Level:
Expert/Professional Level
Diagnostic Tools:
References to factory diagnostic tools (e.g., STAR Diagnosis/XENTRY) and procedures.
Wiring Diagrams:
Complete and detailed electrical schematics for all circuits.
Torque Specifications:
Precise torque values for all fasteners and critical components.
Special Tools:
Identification and usage instructions for specialized Mercedes-Benz tools.
Engine Options 2009:
Multiple engine variants were available, including: E350 (3.5L V6), E550 (5.5L V8), and potentially E320 CDI (3.0L V6 diesel in some markets).
Engine Code Example:
M272 (3.5L V6), M273 (5.5L V8)
E350 Horsepower Approx:
268 hp
E350 Torque Approx:
258 lb-ft
E550 Horsepower Approx:
382 hp
E550 Torque Approx:
391 lb-ft
Fuel Delivery:
Electronic Fuel Injection (EFI) with multi-point injection.
Fuel Type:
Premium Unleaded Gasoline (required for V6/V8 engines)
NHTSA Ratings:
Likely achieved high safety ratings from NHTSA and IIHS due to Mercedes-Benz's safety focus.
Esp Bas:
Electronic Stability Program (ESP) with Brake Assist (BAS).
ABS:
Anti-lock Braking System (ABS).
Adas Options:
Optional features included DISTRONIC PLUS (adaptive cruise control), BLIS (Blind Spot Information System), Lane Keeping Assist, PRE-SAFE braking.
Airbags:
Front, side, curtain, and knee airbags.
Body Structure:
Advanced high-strength steel structure for occupant protection.
Comand System:
COMAND (Cockpit Management and Navigation) system, offering navigation, audio, and vehicle settings.
Connectivity Options:
Bluetooth connectivity for phone calls, optional USB interface.
Parktronic System:
Parking assist sensors.
Night View Assist:
Optional night vision system.
Media Interface:
Optional Media Interface for connecting external audio devices.
Oil Change Interval Approx:
Every 10,000 miles or 1 year, whichever comes first (variable by model year and driving conditions; confirm with manual).
Major Service Intervals Approx:
Major services (e.g., spark plugs, transmission service) typically around 40,000-60,000 miles.
Engine Oil Spec Example:
MB 229.5 / MB 229.51 (SAE 0W-40 or 5W-40 synthetic oil recommended)
Transmission Fluid Spec:
MB 236.14 (for 7G-TRONIC)
Coolant Spec:
MB 325.0 or 326.0 (Ethylene Glycol based)
M272 V6 Balance Shaft:
Older M272 engines (pre-facelift W211, potentially early W212 models) had issues with the balance shaft timing gear wearing out, leading to check engine lights and rough running.
Oem Part Numbers:
Manual will contain specific OEM part numbers for all replaceable components.
Mercedes Benz Legacy:
Long-standing reputation for engineering excellence, luxury, and safety.
W212 Introduction:
The W212 generation was introduced for the 2010 model year, with the 2009 model year often referring to the late production of the preceding W211 generation or early production of the W212 depending on market introduction timing. Assuming product name refers to the W212 generation, the 2009 designation may be an approximation or early release year for some markets.
W212 Design Shift:
Marked a significant design departure, moving away from the 'quad' headlight design of the W211.
