Engine Mechanical:
Engine assembly, disassembly, cylinder head, pistons, connecting rods, crankshaft, lubrication system, cooling system.
Engine Management:
Fuel injection system, ignition system, engine control unit (ECU) diagnosis, emission control systems, VANOS system.
Transmission Manual:
SMG (Sequential Manual Gearbox) and manual transmission overhaul, clutch operation, gear shift mechanisms.
Transmission Automatic:
Automatic transmission (e.g., GM 5L40-E) diagnosis, overhaul, control systems, fluid specifications.
Drivetrain:
Driveshaft, differential, axles, wheel bearings, limited-slip differential (if equipped).
Suspension Front:
MacPherson struts, control arms, anti-roll bar, steering knuckle, coil springs, shock absorbers.
Suspension Rear:
Multi-link suspension, control arms, trailing arms, subframe, anti-roll bar, coil springs, shock absorbers.
Steering:
Power steering system, steering rack, tie rods, steering column, steering angle sensor.
Brake System Front:
Ventilated disc brakes, brake calipers, brake pads, brake rotors, ABS components.
Brake System Rear:
Disc brakes, brake calipers, brake pads, brake rotors, parking brake mechanism, ABS components.
Brake Control:
Anti-lock Braking System (ABS), Electronic Brake-force Distribution (EBD), Brake Assist (BA).
Electrical System Overview:
Wiring diagrams, electrical component locations, fuse and relay identification.
Charging System:
Alternator, voltage regulator, battery diagnostics.
Starting System:
Starter motor, starter solenoid, ignition switch.
Lighting System:
Headlights, taillights, interior lighting, fog lights, bulb types and replacement.
Instrument Panel:
Instrument cluster, gauges, warning lights, sensor inputs.
Body And Frame:
Body panel removal and installation, chassis components, door mechanisms, hood, trunk.
Interior Trim:
Seat removal, dashboard components, door panels, headliner, carpet replacement.
Glass And Seals:
Windshield, side glass, rear glass replacement, weatherstripping.
HVAC:
Heating, Ventilation, and Air Conditioning (HVAC) system diagnosis, refrigerant handling, blower motor, evaporator, condenser, climate control panel.
Maintenance:
Oil change, filter replacement, spark plug replacement, fluid checks and top-offs, belt inspection and replacement.
Troubleshooting:
Diagnostic procedures for common faults, symptom-based troubleshooting guides, error code interpretation.
Repair:
Step-by-step instructions for component replacement, repair, and adjustment across all major vehicle systems.
Diagnostics:
Information on using diagnostic tools (e.g., BMW ISTA), reading fault codes, live data analysis, component testing.
Specifications:
Torque specifications for critical fasteners, fluid capacities, component tolerances, wiring diagrams, diagnostic trouble codes (DTCs).
Depth:
Extensive, covering basic maintenance to full engine and transmission rebuilds, including advanced diagnostics and electrical system repair.
Oil Change Interval:
BMW Condition Based Service (CBS) system, typically 10,000-15,000 miles or annually, whichever comes first. Consult manual for specific CBS parameters.
Air Filter Replacement:
Recommended every 30,000 miles or as indicated by CBS.
Cabin Filter Replacement:
Recommended every 15,000-30,000 miles or annually.
Spark Plug Replacement:
Recommended every 100,000 miles (using Long-Life spark plugs, e.g., NGK BKR6EQUP).
Coolant Flush:
Recommended every 2-4 years or 30,000-50,000 miles.
Engine Oil Type:
SAE 5W-30 or 0W-30 Synthetic (BMW Longlife-01 Approved)
Engine Oil Capacity:
6.5 US quarts (6.2 liters) with filter change
Coolant Type:
BMW Blue Antifreeze (G48), 50/50 mixture with distilled water
Brake Fluid Type:
DOT 4 (BMW High Performance)
Transmission Fluid Manual:
Pentosin MTF LT-2 or equivalent (check specific manual)
Transmission Fluid Automatic:
GM Dextron III or Dexron VI (check specific manual for exact type and capacity)
Power Steering Fluid:
Pentosin CHF 11S or BMW Power Steering Fluid (Green)
Cooling System:
Plastic expansion tank prone to cracking, water pump failure (especially plastic impeller), thermostat housing leaks.
Vanos:
Failure of VANOS solenoids or seals can lead to rough idle, loss of power, and increased fuel consumption.
Oil Leaks:
Valve cover gasket, oil filter housing gasket, and oil pan gasket are common sources of leaks.
Suspension:
Worn control arm bushings, ball joints, and tie rod ends can cause steering looseness and uneven tire wear.
Electrical:
Failed ABS/DSC wheel speed sensors, CCV (Crankcase Ventilation) system failure causing rough running and oil consumption.
Interior:
Headliner sagging, pixelation on instrument cluster display, worn seat bolsters.