Vehicle Segment:
Luxury Grand Tourer (GT) Coupe/Convertible
Competitors:
BMW 6 Series, Audi A5, Lexus SC 430, Cadillac XLR
Design Philosophy:
Elegant styling, refined driving dynamics, luxurious interior, powerful yet smooth V6 engine
Target Audience:
Mercedes-Benz CLK350 owners, independent repair shops, DIY enthusiasts
Benefit:
Empowers users to perform accurate diagnostics and repairs, saving time and money on dealership service
Engine:
3.5L V6 (M272) - diagnostics, repair, overhaul, timing system, cooling system, lubrication system, fuel delivery
Transmission:
7G-TRONIC (722.9) Automatic Transmission - diagnostics, repair, fluid service, electronic control unit (TCU)
Drivetrain:
Rear-wheel drive (RWD), differentials, drive shafts, axles
Suspension:
Front and rear suspension components, struts, springs, control arms, bushings, alignment specifications
Brakes:
ABS, ESP, brake system components (rotors, pads, calipers), hydraulic system, parking brake
Steering:
Power steering system, steering column, steering rack, electronic power steering (EPS) if applicable
Electrical:
12V electrical system, battery, alternator, starter, fuse box diagrams, wiring schematics, lighting systems, instrument cluster
Body:
Body panels, doors, hood, trunk, convertible top mechanism (for Cabriolet models), interior trim, glass
HVAC:
Automatic climate control, A/C system refrigerant, blower motor, HVAC control module
Safety Systems:
Airbag system (SRS), seat belt pre-tensioners, crash sensor diagnostics
Infotainment:
COMAND NTG 2.5 (navigation, audio system, telematics), instrument cluster functions
Maintenance:
Scheduled maintenance intervals, oil changes, filter replacements, spark plug replacement, fluid checks and changes
Troubleshooting:
Diagnostic trouble codes (DTCs), symptom-based troubleshooting guides, common fault diagnosis
Repair:
Component removal and installation, engine rebuild procedures, transmission overhaul, brake system repairs, electrical component replacement
Diagnostics:
OBD-II diagnostics, Mercedes-Benz proprietary diagnostic protocols, sensor testing, actuator testing
Specifications:
Torque specifications for all fasteners, clearances, pressures, voltages, component data
Wiring Diagrams:
Detailed electrical system wiring diagrams for all major systems
Depth:
Detailed, from basic maintenance to complex engine and transmission rebuilds, including electronic system diagnostics
Infotainment System:
COMAND APS (NTG 2.5) with 7-inch display, CD/DVD player, AM/FM radio, optional navigation
Audio System:
Standard 8-speaker audio system, optional Harman Kardon surround sound
Cruise Control:
Standard cruise control with speed limiter
Parking Assistance:
Optional Parktronic parking sensors (front and rear)
Bluetooth:
Optional Bluetooth connectivity for hands-free calling (requires cradle or adapter)
Keyless Entry:
Standard Keyless-Go optional
Oil Change Interval:
Up to 10,000 miles or 1 year (flexible service system, depending on driving conditions)
Major Service A:
Typically around 10,000 miles or 1 year (e.g., synthetic oil, filter, fluid checks)
Major Service B:
Typically around 20,000 miles or 2 years (includes Service A items plus cabin filter, brake fluid flush, etc.)
Transmission Service:
Recommended every 40,000 - 60,000 miles or as per flexible service system
Spark Plug Replacement:
Approximately 60,000 miles (check specific ignition coil recommendations)
Engine Oil Type:
Mobil 1 Synthetic 0W-40 (MB Approval 229.5) or equivalent
Coolant Type:
Mercedes-Benz Coolant/Antifreeze (MB 325.0/326.0) - typically a blue ethylene glycol based coolant
Brake Fluid Type:
DOT 4 Plus (MB Approval 331.0)
M272 Engine Common Issues:
Intake manifold runner flaps (prone to failure due to material degradation), balance shaft wear (on early M272 production, though 2007 is generally improved but still a consideration), timing chain stretch (less common but possible)
7G Tronic Common Issues:
Mechatronic unit issues (solenoid failures), torque converter shudder, premature wear of clutch packs (often related to fluid maintenance)
Electrical Common Issues:
Window regulator failures, SAM (Signal Acquisition Module) issues, parktronic sensor malfunctions
Convertible Top Common Issues:
Hydraulic pump leaks, cylinder seal failures, fabric wear, sensor issues
