Segment:
Mid-size Luxury Sedan
Competitors:
BMW 5 Series, Audi A6, Lexus GS, Cadillac CTS, Jaguar XF
Distinction:
Known for its refined ride, robust build quality, advanced technology for its era, and powerful yet efficient powertrains.
Trim Levels Covered:
Likely covers standard and optional equipment packages for the E320 model, including sport and luxury variants.
Engine:
Detailed diagnostics, repair, and overhaul for the M272 V6 engine (3.0L) and OM642 V6 Diesel engine (3.2L).
Transmission:
722.6 (5G-TRONIC) automatic transmission; diagnostics, fluid service, seal replacement, clutch pack repair, mechatronics unit.
Suspension:
Front and rear suspension systems (independent multi-link), shock absorbers, springs, control arms, bushings, self-leveling rear suspension (optional).
Brakes:
Hydraulic brake system with ABS, ESP, BAS, SBC (if applicable to specific W211 variants, though less common for 2009 E320 facelift), brake pads, rotors, fluid flush, caliper repair.
Steering:
Hydraulic power steering system, steering rack, tie rod ends, steering column, power steering fluid specifications.
Electrical:
Full wiring diagrams, component locations, diagnosis of Body Control Module (BCM), Fuse Box Diagram (FBD), CAN bus system, comfort systems, lighting, power accessories.
Climate Control:
Automatic climate control (THERMATIC/THERMOTRONIC), refrigerant system, A/C compressor, evaporator, heater core, blower motor, flap actuators.
Infotainment:
COMAND APS system (if equipped), audio system, navigation, Bluetooth connectivity, speaker replacement, head unit diagnostics.
Body And Trim:
Interior and exterior trim removal/installation, door panels, dashboard, bumpers, body panels, door mechanisms, glass replacement.
Safety Systems:
Airbag system (SRS), seat belt pre-tensioners, occupant restraint system diagnostics, sensor replacement.
Maintenance:
Oil changes, filter replacements (oil, air, cabin), spark plug replacement, fluid checks and changes (coolant, brake, power steering), brake pad and rotor replacement.
Diagnostics:
Troubleshooting charts, DTC (Diagnostic Trouble Code) lookup, systematic diagnostic procedures for all major systems using MB Star diagnostic tools.
Repair:
Component removal and installation, engine rebuild procedures, transmission overhaul, suspension component replacement, electrical component repair.
Calibration:
Steering angle sensor calibration, suspension component alignment, parking brake calibration.
Software Updates:
ECM, TCM, and other control module programming and software updates (requires diagnostic hardware).
Depth:
Factory-level diagnostic and repair procedures, including torque specifications, specialized tool requirements, and wiring schematics.
Engine Code:
M272 (Gasoline), OM642 (Diesel)
Engine Type Gas:
3.0L V6 SOHC 24-valve (M272)
Engine Type Diesel:
3.2L V6 Turbocharged Diesel (OM642)
Horsepower Gas:
Approx. 228 hp @ 6000 rpm (M272)
Torque Gas:
Approx. 221 lb-ft @ 3000-5250 rpm (M272)
Horsepower Diesel:
Approx. 208 hp @ 4000 rpm (OM642)
Torque Diesel:
Approx. 384 lb-ft @ 1600-2800 rpm (OM642)
Fuel Delivery Gas:
Sequential Electronic Fuel Injection (SEFI)
Fuel Delivery Diesel:
Common Rail Direct Injection (CRDI), Turbocharged
Emission Controls:
Catalytic converters, EGR (diesel), DPF (diesel on some models/markets), secondary air injection (gasoline).
Transmission Type:
722.6 5-Speed Automatic (5G-TRONIC)
Optional Transmission:
N/A for E320, 722.9 7-Speed Automatic (7G-TRONIC) was standard on higher engine variants like E350, E500.
Transmission Features:
Driver-adaptive shift programs (Comfort, Sport), manual shifting mode (Tiptronic), torque converter lock-up clutch.
Transmission Fluid Type:
MB Approved ATF 236.12 or 236.14 (e.g., Mobil ATF 134, Pentosin ATF1)
Transmission Fluid Capacity:
Approx. 7.5 - 9.0 Liters (with torque converter replacement)
NHTSA Rating:
Typically received 5-star ratings in frontal and side crash tests from NHTSA for this generation.
IIHS Rating:
Likely achieved 'Good' ratings in IIHS crash tests, including moderate overlap frontal and side impact.
Active Safety:
ABS, ESP (Electronic Stability Program), ASR (Anti-Slip Regulation), Brake Assist (BAS), Tire Pressure Monitoring System (TPMS).
Passive Safety:
Front airbags, side airbags, curtain airbags, active front head restraints, three-point seat belts with pre-tensioners and belt-force limiters.
Advanced Safety:
Optional: DISTRONIC cruise control, PARKTRONIC parking assist, Bi-Xenon headlamps with cornering illumination.
Infotainment System:
COMAND APS (Cockpit Management and Navigation) with 6.5-inch display, CD/DVD changer, AM/FM radio, optional SiriusXM satellite radio.
Connectivity:
Bluetooth hands-free interface, optional Media Interface for iPod/USB connectivity.
Driver Assistance Features:
Optional DISTRONIC adaptive cruise control, optional PARKTRONIC parking sensors, optional backup camera, optional lane keeping assist (Lane Tracking Package).
Comfort Tech:
Keyless-Go (push-button start), powered front seats with memory, heated and ventilated front seats (optional), panoramic sunroof (optional), dual-zone automatic climate control.
Oil Change Interval:
Typically every 10,000 miles or 12 months, whichever comes first (or based on Mercedes-Benz Flexible Service System - FSS).
Major Service Intervals:
Major services (e.g., spark plugs, transmission fluid, coolant) typically around 40,000-60,000 miles, detailed in service bulletins.
Engine Oil Type:
SAE 0W-40 or 5W-40, meeting MB 229.5 or MB 229.51 specifications.
Coolant Type:
MB Approved Antifreeze/Coolant Concentrate (e.g., ZEREX G5, Pentofrost SF) mixed 50/50 with distilled water. MB Part # Q10300001.
Brake Fluid Type:
DOT 4 PLUS (MB Approved hydraulic fluid) - MB Part # Q13700002.
Common Issues:
M272 engine: Balance shaft sprocket wear leading to timing chain issues (addressed in later production years/revisions), intake manifold flap actuator failure. OM642 engine: Diesel Particulate Filter (DPF) clogging, glow plug issues, turbocharger oil supply line leaks. Common across models: SAM unit corrosion, electronic module failures, suspension component wear (bushings, air springs if equipped), SBC hydraulic unit lifespan issues (less common on facelift W211).
Oil Filter Part Number:
Mann-Filter HU 719/7x, Mahle OX 157/1D
Air Filter Part Number:
Mann-Filter C 26 005/1, Mahle LX 1024
Heritage:
Mercedes-Benz has a long-standing reputation for engineering excellence, safety, luxury, and durability dating back to the late 19th century.
E Class Lineage:
The E-Class represents the core executive sedan lineup of Mercedes-Benz, with roots tracing back to models like the 'Ponton' sedans and the iconic W123/W124 generations.
Generation:
W211 generation (2002-2009), with a significant facelift in 2006. The 2009 model is the final year of this generation.
Assembly Location:
Primary assembly in Sindelfingen, Germany.