Engine Mechanical:
Engine assembly, disassembly, cylinder head, block, pistons, connecting rods, crankshaft, lubrication system, cooling system.
Engine Performance:
Fuel injection systems (MPI), ignition systems, emissions control systems, turbocharging (if applicable), engine management systems (ECU).
Transmission Automatic:
Transmission assembly/disassembly, torque converter, valve body, electronic controls, fluid specifications, troubleshooting.
Drivetrain:
Front and rear axle assemblies, differentials, driveshafts, CV joints, transfer case (4MATIC).
Suspension:
Front and rear suspension components, shock absorbers, springs, control arms, bushings, alignment procedures.
Steering:
Power steering system, steering column, steering gear, tie rods, troubleshooting.
Brakes:
Hydraulic brake system, ABS (Anti-lock Braking System), ESP (Electronic Stability Program), brake fluid specifications, disc/drum brake components, parking brake.
Electrical System:
Battery, charging system (alternator), starting system, lighting systems, power distribution, wiring diagrams, fuses, relays.
Body And Chassis:
Body construction, exterior panels, interior trim, doors, windows, latches, hinges, corrosion protection.
HVAC:
Heating, ventilation, and air conditioning (HVAC) system, refrigerant, compressor, evaporator, condenser, climate control unit.
Safety Systems:
Airbag system (SRS), seat belts, crash sensor location and replacement, diagnostics.
Infotainment And Electronics:
Audio system, navigation system, instrument cluster, control modules, CAN bus communication.
Maintenance Procedures:
Scheduled maintenance, oil changes, filter replacements, fluid checks and top-offs, spark plug replacement.
Diagnostic Procedures:
Troubleshooting guides, symptom-based diagnostics, diagnostic trouble codes (DTCs), wiring diagram interpretation.
Repair Procedures:
Detailed step-by-step instructions for component removal, installation, and adjustment.
Engine Repair:
Engine rebuild procedures, cylinder head gasket replacement, timing chain/belt service (if applicable), component overhaul.
Transmission Repair:
Automatic transmission overhaul, clutch replacement (if applicable), electronic control module (TCM) programming/replacement.
Brake System Repair:
Brake caliper replacement, rotor resurfacing/replacement, brake line repair, ABS/ESP component testing and replacement.
Electrical Diagnostics:
Component testing, circuit diagnosis using wiring diagrams, sensor testing, module troubleshooting.
HVAC Service:
Refrigerant recharge, leak detection, component replacement (compressor, evaporator), climate control system calibration.
Suspension And Steering Repair:
Component replacement (ball joints, tie rod ends), power steering pump replacement, suspension alignment procedures.
Depth Of Information:
Factory-level technical detail, suitable for professional technicians and advanced DIY enthusiasts.
Diagnostic Tools Required:
References to specific Mercedes-Benz diagnostic equipment (e.g., STAR Diagnosis/XENTRY) and generic OBD-II scanners.
Specifications Detail:
Torque specifications, clearances, fluid types and capacities, electrical schematics, pressure specifications.
Oil Change Interval:
Every 10,000 miles or 12 months, whichever comes first (synthetic oil recommended).
Air Filter Replacement:
Every 30,000 miles or as needed based on driving conditions.
Cabin Filter Replacement:
Every 15,000 miles or annually.
Spark Plug Replacement:
Approx. 100,000 miles (Long-life spark plugs).
Engine Oil Specification:
Mobil 1 0W-40 Synthetic (MB Approval 229.5).
Transmission Fluid Specification:
MB 236.10 Automatic Transmission Fluid (e.g., Mobil ATF 134).
Coolant Specification:
Mercedes-Benz Coolant Concentrate (Zerex G-05 or equivalent, mixed 50/50 with distilled water).
Brake Fluid Specification:
DOT 4.
Common Problem 1:
Mass Air Flow (MAF) sensor issues, leading to rough idle or poor performance.
Common Problem 2:
Cracked dashboard material due to UV exposure/age.
Common Problem 3:
Power steering pump leaks or failure.
Common Problem 4:
ABS/ESP sensor faults, often due to wheel speed sensor issues or wiring.
Common Problem 5:
Catalytic converter failure (more common with higher mileage).
Common Problem 6:
HVAC blower motor resistor failure, resulting in non-functional fan speeds.
