Manual Coverage
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Systems Covered
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Engine:
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M30B35 Engine (3.5L Inline-6)
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Transmission:
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4HP22EH Automatic Transmission
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Brakes:
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Hydraulic Disc Brakes (Front & Rear), ABS (Anti-lock Braking System)
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Electrical:
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Complete Electrical System, Wiring Diagrams, ECU, Sensors
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Suspension:
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Front MacPherson Struts, Rear Independent Suspension (Semi-trailing Arms)
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Steering:
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Hydraulic Power Steering
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Fuel System:
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Bosch Motronic Engine Management, Fuel Injection, Fuel Pump, Tank
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Cooling System:
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Radiator, Fan, Water Pump, Thermostat
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Exhaust System:
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Catalytic Converter, Mufflers, Exhaust Manifolds
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HVAC:
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Heating, Ventilation, Air Conditioning System
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Bodywork:
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Body Panels, Doors, Hood, Trunk, Chassis Repair
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Interior:
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Seating, Trim, Dashboard Components
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Procedures Included
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Maintenance:
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Scheduled Maintenance, Oil Changes, Filter Replacements, Inspections
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Diagnostics:
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Troubleshooting Guides, Fault Code Interpretation (where applicable)
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Repair:
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Engine Overhaul, Transmission Service, Brake Pad Replacement, Suspension Component Replacement
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Overhaul:
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Detailed Engine and Transmission Rebuild Procedures
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Adjustment:
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Valve Adjustment (if applicable to M30), Idle Speed Adjustment
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Replacement:
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Component Replacement (e.g., Alternator, Starter, Water Pump, Radiator)
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Calibration:
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ABS Sensor Calibration (if applicable)
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Technical Depth
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Depth:
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Full Mechanical and Electrical Repair Procedures
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Diagnostic Tools:
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Information on diagnostic procedures and potential tool requirements
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Torque Specs:
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Detailed torque specifications for all fasteners
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Clearances:
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Engine component clearances (e.g., bearing clearances, piston ring gaps)
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Electrical Diagrams:
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Comprehensive wiring schematics
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Maintenance
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Service Intervals
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Oil Change Interval:
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Every 10,000-15,000 km (6,000-9,000 miles) or annually, depending on driving conditions.
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Transmission Fluid Interval:
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BMW recommended 'lifetime' fluid, but many specialists recommend service every 80,000-100,000 km (50,000-60,000 miles).
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Coolant Flush Interval:
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Every 2-3 years or 50,000 km (30,000 miles)
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Spark Plug Replacement:
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Approx. 30,000-40,000 km (20,000-25,000 miles) for standard plugs, longer for platinum/iridium.
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Fluid Specifications
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Engine Oil Specification:
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API SJ/SL, SAE 5W-30 or 10W-40 (check owner's manual for exact BMW approval)
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Coolant Specification:
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BMW Blue Coolant (G48) or equivalent ethylene glycol-based coolant with corrosion inhibitors.
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Brake Fluid Specification:
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DOT 4
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Known Issues
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Cooling System:
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Water pump failure, radiator leaks, hose degradation, thermostat housing cracks
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Electrical:
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ABS sensor failures, dashboard warning lights, OBC (On-Board Computer) pixilation, ignition switch problems
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Suspension:
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Worn control arm bushings, rear subframe mounting points, strut top mounts
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Fuel System:
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Fuel pump failure, clogged injectors, fuel pressure regulator issues
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Engine:
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Oil leaks (valve cover gasket, oil pan gasket), valve stem seals, timing chain guides (less common on M30 than later engines)
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HVAC:
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HVAC blower motor resistor failure, climate control module issues, AC compressor leaks
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Parts Availability
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General Availability:
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Good for common wear items, specialized components may require sourcing from BMW specialists.
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