Engine Mechanical:
Engine assembly, cylinder head, piston, crankshaft, camshaft, timing, lubrication, cooling system
Engine Management:
Fuel injection, ignition system, emissions control, engine control module (ECM), sensors, actuators
Transmission Manual:
Clutch, gearbox assembly, shift mechanism (for manual transmission variants, if applicable)
Transmission Automatic:
Torque converter, transmission control module (TCM), valve body, planetary gears, hydraulic system, fluid service
Drivetrain:
Driveshafts, differential, axles, wheel bearings
Suspension:
Front suspension, rear suspension, shock absorbers, springs, control arms, ball joints, bushings
Steering:
Power steering system, steering rack, steering column, power steering fluid
Brakes:
Brake system hydraulics, ABS, ESP, brake calipers, rotors, pads, parking brake, brake fluid specifications
Electrical System:
Battery, charging system, starter, alternator, wiring diagrams, fuses, relays
Body And Chassis:
Body panels, doors, hinges, latches, glass, interior trim, chassis components
HVAC:
Heating, Ventilation, and Air Conditioning (HVAC) system, climate control module, refrigerant, components
Infotainment And Electronics:
Audio system, navigation, telematics, instrument cluster, lighting system, comfort electronics
Safety Systems:
Airbag system (SRS), seatbelt pre-tensioners, safety restraint system (SRS) component replacement and testing
Routine Maintenance:
Oil change, filter replacement, fluid checks and changes, tire rotation, spark plug replacement
Engine Repair:
Engine diagnostics, component replacement (e.g., head gasket, pistons, valves), timing belt/chain service, turbocharger service (if applicable)
Transmission Repair:
Transmission fluid and filter replacement, seal replacement, valve body service, torque converter replacement, clutch replacement (manual)
Suspension And Steering Repair:
Component replacement (shocks, struts, control arms, tie rods), alignment specifications, power steering pump replacement
Brake System Repair:
Brake pad and rotor replacement, brake caliper service, bleeding brake system, ABS/ESP component diagnosis and replacement
Electrical Diagnostics:
Troubleshooting electrical faults, component testing, wiring harness repair, module replacement and programming
HVAC System Repair:
Refrigerant recharge, component replacement (compressor, condenser, evaporator), leak detection, climate control system diagnosis
Bodywork And Interior:
Panel removal/installation, door and window repair, interior trim removal/installation
Diagnostics And Troubleshooting:
Diagnostic trouble codes (DTCs), symptom-based troubleshooting guides, diagnostic tool usage (e.g., STAR Diagnosis)
Specifications And Torques:
Torque values for all critical fasteners, tightening sequences, measurement specifications
Depth:
In-depth factory-level repair procedures, detailed diagrams, component testing, diagnostic strategies
Oil Change Interval:
Typically every 10,000 miles or 12 months, whichever comes first (varies based on driving conditions and oil specification; consult manual for specific engine). Service A/B intervals are common.
Transmission Service Interval:
Every 40,000 to 60,000 miles for automatic transmission fluid and filter change, depending on driving style and manufacturer recommendations (MB recommends fluid changes for the 7G-TRONIC at specific intervals).
Brake Fluid Change Interval:
Every 2 years.
Engine Oil Spec:
MB 229.5 (e.g., Mobil 1 0W-40, Castrol Syntec 0W-30/5W-40) for gasoline engines. Consult manual for diesel specifications (e.g., MB 229.3, 229.31).
Coolant Spec:
Mercedes-Benz approved G48 Coolant or equivalent (blue color).
Power Steering Fluid Spec:
MB 343.0 or MB 344.0 (e.g., Pentosin CHF 11S).
Common Problems:
Sampled common issues may include: Biodegradable wiring harness insulation degradation, SBC (Sensotronic Brake Control) system issues (requiring replacement), SAM unit (Signal Acquisition Module) corrosion, suspension component wear (e.g., control arm bushings), rust on body panels (especially wheel arches), EGS (Electronic Gearbox Control) module problems, oil cooler leaks.
Common Issues Diagnosis:
The manual will provide diagnostic procedures and component testing to identify and rectify these common issues.