Engine Mechanical:
Detailed breakdown of M52, M54, and M62 engines (cylinder head, block, pistons, crankshaft, camshafts, timing systems, oil pump, cooling system).
Engine Management:
Fuel injection systems (Bosch Motronic), ignition systems, emissions control, diagnostic trouble codes (DTCs), sensor data interpretation.
Transmission Manual:
Disassembly, assembly, adjustment, and repair of manual gearboxes, clutch system.
Transmission Automatic:
Operation, diagnosis, overhaul, and fluid service of ZF automatic transmissions (e.g., 5HP18, 5HP19, 5HP24, 5HP30).
Drivetrain:
Driveshafts, CV joints, differential, rear axle assembly, wheel bearings.
Suspension:
Front and rear suspension components, control arms, subframes, springs, shock absorbers, struts, bushings, alignment specifications.
Steering:
Power steering system, steering rack, tie rods, steering column, hydraulic components, troubleshooting.
Brakes:
Front and rear brake systems (disc brakes), ABS, DSC, brake fluid specifications, bleeding procedures, caliper and rotor replacement, parking brake.
Electrical System:
Wiring diagrams, fuse box layouts, component testing, battery and charging system, starter motor, alternator.
Lighting:
Headlights, taillights, interior lighting, bulb specifications, troubleshooting.
Climate Control:
HVAC system, A/C system service, refrigerant handling, blower motor, evaporator, condenser, heater core, troubleshooting.
Bodywork Interior:
Door mechanisms, window regulators, seat adjustments, dashboard removal, interior trim, sound deadening.
Bodywork Exterior:
Bumpers, fenders, hood, trunk lid, door panel removal, panel alignment, glass replacement.
Safety Systems:
Airbag system (SRS), seatbelt mechanisms, occupant restraints.
Diagnostics:
OBD-II diagnostics, reading and clearing fault codes, live data interpretation, specialized BMW diagnostic tools (e.g., DIS).
Preventive Maintenance:
Oil changes, filter replacements (oil, air, fuel, cabin), spark plug replacement, coolant flushes, brake fluid replacement, belt inspection and replacement.
Troubleshooting:
Step-by-step diagnostic procedures for common and uncommon faults across all major systems.
Repair Rebuild:
Detailed instructions for component removal, disassembly, cleaning, inspection, repair, and reassembly of major vehicle systems.
Component Replacement:
Specific procedures for replacing parts such as alternators, starters, fuel pumps, water pumps, radiators, brake pads and rotors, suspension arms, engine mounts.
Fluid Service:
Correct fluid types, capacities, and change intervals for engine oil, coolant, brake fluid, power steering fluid, transmission fluid, differential fluid.
Electrical Diagnostics:
Testing circuits, relays, sensors, actuators, and wiring using multimeters and oscilloscopes.
Engine Tuning Adjustment:
Idle speed adjustments, throttle body cleaning and calibration, VANOS system checks.
Body Panel Alignment:
Guidance on adjusting doors, hood, trunk for proper fit and sealing.
Depth Level:
Comprehensive. Covers everything from basic fluid checks to complete engine and transmission overhauls.
Diagnostic Capabilities:
Advanced diagnostic information, including sensor data, fault code interpretation, and troubleshooting trees.
Special Tools:
Lists necessary special tools and their functions required for specific repairs.
Torque Specifications:
Detailed torque values for all critical fasteners and engine components.
Clearances Tolerances:
Specifications for engine component clearances, bearing tolerances, and other critical measurements.
Wiring Diagrams:
Detailed, color-coded wiring diagrams for all vehicle electrical systems.
Engine Oil Change:
BMW Condition Based Service (CBS) system dictates intervals, typically 7,500-15,000 miles or annually, depending on driving conditions.
Air Filter Replacement:
Approx. every 30,000 miles or as per CBS.
Cabin Air Filter Replacement:
Approx. every 15,000-30,000 miles or annually.
Spark Plug Replacement:
M52TU: ~100,000 miles; M54: ~100,000 miles; M62/M62TU: ~100,000 miles.
Coolant Flush:
Initial fill typically lasts 4 years or 60,000 miles, subsequent intervals typically 2 years or 30,000 miles.
Engine Oil:
SAE 5W-30 or 5W-40 synthetic, meeting BMW Longlife-01 (LL-01) or LL-98 specifications.
Coolant:
BMW Blue Antifreeze/Coolant (G48 ethylene glycol based), mixed 50/50 with distilled water.
Brake Fluid:
DOT 4 (or DOT 4 PLUS) Low Viscosity (LV)
Power Steering Fluid:
Pentosin CHF 11S or equivalent (Dexron III ATF for some older models/applications, check manual).
Automatic Transmission Fluid:
ZF Lifeguardfluid 5 (for most 5HP transmissions) or Dexron III/VI (verify specific transmission type).
Cooling System:
Plastic coolant expansion tanks are prone to cracking; water pump failure (plastic impeller).
Suspension:
Front control arm bushings (control arm 'bushing' separation), rear subframe bushings, ball joints, tie rod ends.
Engine M54:
CCV (Crankcase Ventilation) system failure leading to oil consumption and vacuum leaks; oil pan gasket leaks; valve cover gasket leaks.
Engine M62:
Timing chain guides (especially on pre-TU engines), valley pan gasket leaks, oil cooler leaks.
Electrical:
ABS/DSC wheel speed sensor failures; pixelation on the instrument cluster LCD; door module failures; heater blower resistor failure.
Transmission Auto:
Mechatronics sleeve leaks (automatic transmissions); torque converter issues.
