Engine:
Comprehensive coverage of the M52B25 engine, including diagnostics, repair, and overhaul procedures.
Fuel System:
Fuel injection system (Bosch Motronic), fuel pump, injectors, fuel pressure regulation, emissions control.
Cooling System:
Radiator, water pump, thermostat, coolant hoses, expansion tank, fan assembly (mechanical/electric).
Ignition System:
Ignition coils, spark plugs, crankshaft position sensor, camshaft position sensor, DME (Digital Motor Electronics).
Exhaust System:
Exhaust manifold, catalytic converter, muffler, oxygen sensors.
Transmission Manual:
Service and repair of Getrag 5-speed manual transmissions (e.g., Getrag 250G), clutch system, shifter mechanism.
Transmission Automatic:
Service and repair of ZF 4HP22 4-speed automatic transmissions, valve body, torque converter, transmission control unit.
Drivetrain:
Driveshaft, constant velocity (CV) joints, differential, rear axle assembly.
Suspension Front:
McPherson struts, control arms, sway bar, wheel bearings, steering knuckle.
Suspension Rear:
Multi-link suspension (Z-axle), shock absorbers, springs, trailing arms, sway bar.
Steering System:
Power steering pump, steering rack, tie rods, steering column.
Brakes Front:
Vented disc brakes, brake calipers, pads, rotors, ABS system (Antilock Braking System).
Brakes Rear:
Solid disc brakes, brake calipers, pads, rotors, ABS system.
Electrical System:
Battery, alternator, starter motor, wiring diagrams, fuses, relays.
Lighting:
Headlights, taillights, interior lighting, bulb replacement.
Climate Control:
HVAC system, blower motor, evaporator, heater core, A/C compressor, refrigerant charging.
Body Exterior:
Body panels, doors, hood, trunk, bumpers, mirrors, glass replacement.
Body Interior:
Dashboard, seats, upholstery, door panels, trim, headliner.
Safety Systems:
Airbag system, seatbelt pre-tensioners, ABS, ASC+T (Automatic Stability Control + Traction).
Maintenance:
Scheduled maintenance, oil changes, filter replacements, spark plug replacement, fluid checks and top-offs.
Diagnostics:
Troubleshooting guides, symptom-based diagnostics, electrical system diagnostics, OBD-II code interpretation (where applicable).
Repair:
Detailed step-by-step repair procedures for all major vehicle systems.
Overhaul:
Complete engine and transmission overhaul procedures, including disassembly and reassembly specifications.
Component Replacement:
Detailed instructions for replacing components such as alternators, starters, water pumps, radiators, brake components, etc.
Electrical Troubleshooting:
Comprehensive wiring diagrams and troubleshooting flowcharts for electrical issues.
Suspension Alignment:
Alignment specifications for front and rear suspension.
Wheel Tire Service:
Tire rotation, balancing, and mounting procedures; wheel bearing replacement.
Emissions Control Service:
Diagnosis and repair of emissions-related components and systems.
Body Repair:
Procedures for minor bodywork, panel replacement, and glass replacement.
Depth:
Factory-level detail, suitable for professional technicians and advanced DIY enthusiasts.
Diagnostic Tools:
References to BMW-specific diagnostic tools (e.g., DIS, GT1) and general diagnostic procedures.
Specifications:
Includes torque specifications, clearances, tolerances, fluid capacities, and electrical specifications.
Diagrams Illustrations:
Numerous diagrams, schematics, and illustrations to aid in understanding procedures and component identification.
Oil Change Interval:
Typically every 7,500-10,000 miles or annually, depending on driving conditions and oil type used. Refer to manual for specific recommendations based on oil quality (e.g., BMW Longlife-01).
Coolant Flush Interval:
Every 2-4 years or as specified by BMW's service schedule.
Spark Plug Replacement:
Approximately every 60,000 miles (check manual for specific plug type and interval).
Brake Fluid Flush:
Every 2 years.
Engine Oil:
BMW recommends synthetic oils meeting BMW LL-01 specifications (e.g., 5W-30, 5W-40). Check manual for exact viscosity and certification.
Coolant:
BMW Blue Coolant (G48) or equivalent ethylene glycol-based coolant with corrosion inhibitors. Typically a 50/50 mix with distilled water.
Brake Fluid:
DOT 4 synthetic brake fluid.
Transmission Fluid Manual:
MTF LT-2 or equivalent manual transmission fluid (check manual for specific type).
Transmission Fluid Automatic:
Dexron III or equivalent ATF fluid (check manual for specific type and BMW approval).
Cooling System:
Plastic coolant expansion tanks, water pumps, and thermostat housings are prone to cracking. 'O-ring' cooling system failure is common.
Suspension:
Worn control arm bushings ('bavarian whines'), strut mounts, and rear trailing arm bushings.
Electrical:
VANOS (Variable Valve Timing) solenoid failures, ABS sensor issues, window regulator failures, EWS (Electronic Immobilizer System) problems.
Engine:
Oil leaks from valve cover gasket and oil pan gasket. PCV (Positive Crankcase Ventilation) system issues.
Exhaust:
Cracked exhaust manifolds, failing catalytic converters, and rusted mufflers.
