Engine:
        
        
            Detailed diagnostics, repair procedures, and specifications for the M52TU inline-6 engine.
        
     
    
        
            Fuel System:
        
        
            Fuel pump, injectors, fuel pressure regulator, evaporative emission control system.
        
     
    
        
            Cooling System:
        
        
            Radiator, water pump, thermostat, coolant lines, fan clutch, reservoir.
        
     
    
        
            Ignition System:
        
        
            Ignition coils, spark plugs, DME (Digital Motor Electronics) control.
        
     
    
        
            Exhaust System:
        
        
            Catalytic converter, muffler, oxygen sensors, exhaust manifold.
        
     
    
        
            Transmission Manual:
        
        
            Clutch, gearbox, shift linkage, repair and overhaul procedures.
        
     
    
        
            Transmission Automatic:
        
        
            GM 5L40-E automatic transmission, hydraulic control, valve body, torque converter, electronic control unit (TCU).
        
     
    
        
            Drivetrain Rear Axle:
        
        
            Differential, driveshaft, CV joints, rear axle bearings.
        
     
    
        
            Suspension Front:
        
        
            MacPherson struts, control arms, ball joints, sway bar, bushings.
        
     
    
        
            Suspension Rear:
        
        
            Multi-link independent rear suspension, control arms, shock absorbers, springs, bushings.
        
     
    
        
            Steering System:
        
        
            Power steering pump, steering rack, tie rods, steering column.
        
     
    
        
            Brakes Front:
        
        
            Ventilated discs, brake calipers, pads, rotors, ABS (Anti-lock Braking System) components.
        
     
    
        
            Brakes Rear:
        
        
            Solid discs, brake calipers, pads, rotors, ABS components.
        
     
    
        
            Electrical System Charging:
        
        
            Alternator, voltage regulator, battery, starter motor.
        
     
    
        
            Electrical System Lighting:
        
        
            Headlights, taillights, interior lighting, fog lights, bulb types and replacement.
        
     
    
        
            Electrical System Instruments:
        
        
            Instrument cluster, gauges, warning lights, diagnostics.
        
     
    
        
            Body Exterior:
        
        
            Body panels, doors, hood, trunk, bumpers, glass, trim.
        
     
    
        
            Body Interior:
        
        
            Seats, upholstery, dashboard, door panels, headliner, trim.
        
     
    
        
            Climate Control:
        
        
            HVAC system, blower motor, AC compressor, refrigerant, heater core, climate control panel.
        
     
    
        
            Safety Restraint System:
        
        
            Airbag system, seat belts, SRS control module.
        
     
    
    
        
            Engine Maintenance:
        
        
            Oil change, filter replacement, spark plug replacement, valve adjustment (if applicable).
        
     
    
        
            Engine Repair:
        
        
            Head gasket replacement, piston ring replacement, bearing replacement, timing chain service.
        
     
    
        
            Transmission Service:
        
        
            Fluid and filter changes, clutch replacement (manual), torque converter replacement (automatic).
        
     
    
        
            Brake Service:
        
        
            Brake pad and rotor replacement, brake fluid flush, caliper and master cylinder overhaul.
        
     
    
        
            Suspension Component Replacement:
        
        
            Strut and shock absorber replacement, control arm and bushing replacement, ball joint replacement.
        
     
    
        
            Steering System Repair:
        
        
            Power steering pump replacement, steering rack replacement, tie rod end replacement.
        
     
    
        
            Electrical Diagnostics:
        
        
            Wiring diagrams, troubleshooting faulty circuits, component testing.
        
     
    
        
            HVAC System Repair:
        
        
            Refrigerant recharge, AC compressor replacement, heater core replacement, blower motor replacement.
        
     
    
        
            Troubleshooting Guides:
        
        
            Systematic approaches to diagnose common and uncommon faults.
        
     
    
        
            Torque Specifications:
        
        
            Detailed torque values for all critical fasteners.
        
     
    
    
        
            Depth Level:
        
        
            Comprehensive: Covers everything from basic maintenance to complete engine and transmission rebuilds, advanced diagnostics, and electrical troubleshooting.
        
     
    
        
            Diagnostic Tools:
        
        
            References BMW's proprietary diagnostic tools (e.g., GT1, DIS) and procedures, including error code interpretation.
        
     
 
    
    
    
        
            Oil Change Interval:
        
        
            BMW Condition Based Service (CBS) system, typically every 10,000-15,000 miles or annually, whichever comes first.
        
     
    
        
            Brake Fluid Flush:
        
        
            Every 2 years
        
     
    
        
            Coolant Flush:
        
        
            Every 4 years or 60,000 miles
        
     
    
        
            Spark Plug Replacement:
        
        
            Approx. 100,000 miles (double platinum)
        
     
    
    
        
            Engine Oil:
        
        
            BMW Longlife-01 (LL-01) or LL-04 synthetic oil, SAE 5W-30 or 5W-40 recommended.
        
     
    
        
            Engine Oil Capacity:
        
        
            6.5 Liters (6.9 US Quarts) with filter change
        
     
    
        
            Coolant:
        
        
            BMW Blue Antifreeze/Coolant (G48 specification) mixed 50/50 with distilled water.
        
     
    
        
            Power Steering Fluid:
        
        
            ATF Dexron III or Pentosin CHF 11S (check specific vehicle build)
        
     
    
    
        
            Cooling System Failure:
        
        
            Plastic expansion tank and radiator can become brittle and crack; water pump failure is also common.
        
     
    
        
            Oil Filter Housing Gasket:
        
        
            Common leak point, causing oil drips on the exhaust manifold and smell.
        
     
    
        
            Vacuum Leaks:
        
        
            Cracked or degraded vacuum hoses and intake manifold gaskets can lead to rough idle and performance issues.
        
     
    
        
            E46 Subframe Reinforcement:
        
        
            Rear subframe mounting points can crack under stress; reinforcement kits are available.
        
     
    
        
            Window Regulator Failure:
        
        
            Plastic components in the window regulator mechanism can break.
        
     
    
        
            Ccv System Clogging:
        
        
            The Crankcase Ventilation (CCV) system can clog, leading to oil consumption and seal failures.