Engine Mechanical:
Engine removal/installation, cylinder head, valve train, crankshaft, pistons, connecting rods, lubrication system, cooling system, fuel system, ignition system, emission controls.
Engine Electrical:
Engine control module (ECM) diagnostics, sensor testing, actuator testing, wiring diagrams, starting and charging systems.
Transmission Manual:
Manual transmission removal/installation, internal component inspection and repair, clutch system.
Transmission Automatic:
Automatic transmission removal/installation, internal repair, torque converter, transmission control module (TCM) diagnostics, valve body.
Drivetrain:
Driveshafts, CV joints, differential, axles, wheel bearings.
Suspension:
Front and rear suspension components, shock absorbers, springs, control arms, bushings, alignment specifications.
Steering:
Power steering system, steering gear, steering column, steering wheel, power steering fluid specifications.
Brakes:
Brake system components (calipers, rotors, pads, lines), ABS (Anti-lock Braking System), ESP (Electronic Stability Program), brake fluid specifications and bleeding procedures.
Electrical System:
12V electrical system, battery, alternator, starter, lighting systems (headlights, taillights, interior), fuses, relays, wiring harnesses, multiplexing.
Body And Chassis:
Body panel removal/installation, doors, hood, trunk, bumpers, frame and unibody construction, corrosion protection.
HVAC:
Heating, Ventilation, and Air Conditioning (HVAC) system, refrigerant, climate control module, compressor, condenser, evaporator, cabin filter.
Interior:
Dashboard, seats, upholstery, trim panels, airbags, seat belts, power accessories (windows, mirrors, locks).
Infotainment And Electronics:
Audio system, navigation system, COMAND system, Bluetooth, telematics, instrument cluster, control units.
Preventative Maintenance:
Scheduled maintenance tasks, oil changes, filter replacements, fluid checks and top-offs, spark plug replacement.
Troubleshooting:
Diagnostic flowcharts, symptom-based troubleshooting, fault code interpretation.
Repair Procedures:
Step-by-step repair instructions for all major vehicle systems, component replacement, and adjustments.
Diagnostics:
On-board diagnostics (OBD-II) information, scan tool usage, component testing procedures, wiring diagrams for diagnostic purposes.
Torque Specifications:
Detailed torque values for critical fasteners across all vehicle systems.
Wiring Diagrams:
Comprehensive electrical system wiring diagrams, including component locations and connector pinouts.
Depth:
Comprehensive from basic maintenance to advanced engine and transmission overhauls, including electrical system diagnostics and bodywork.
Oil Change Interval:
Every 10,000 miles or 1 year (flexible service system 'ASSYST')
Major Service:
Typically around 30,000 to 60,000 miles, involving spark plugs, transmission service, brake fluid flush, coolant change.
Engine Oil Spec:
MB 229.5, MB 229.51 (check owner's manual for specific engine requirement). Viscosity: 0W-40, 5W-40, 5W-30.
Transmission Fluid Automatic:
MB 236.10, MB 236.12, MB 236.14 (check specific transmission type).
Coolant Spec:
MB 325.0 / 326.0 (Antifreeze/Coolant, blue/green, ethylene glycol based)
Brake Fluid Spec:
DOT 4 Plus (MB 331.0)
Common Wear Items:
Worn engine and transmission mounts, HVAC blower motor failure, oil cooler leaks (M272/M273 engines), balance shaft gear wear (M272 engines), SBC brake system issues (early models), water pump leaks.
Electrical Faults:
Window regulator failures, door lock actuator issues, CAN bus communication faults.
