🏷️ Basic Information Identification Make: BMW Model: Z4 Model Variant: 3.0i Year: 2004 Codes Chassis Code: E85 Engine Code Family: N52B30 👋 Introduction Market Position Vehicle Segment: Premium Two-Seater Sports Roadster Competitive Analysis Key Competitors 2004: Porsche Boxster, Mercedes-Benz SLK, Audi TT Roadster, Chevrolet Corvette (early C6) Key Features Vehicle Appeal: Sporty handling, powerful inline-six engine, premium interior, convertible experience, BMW brand prestige Manual Benefit Owner Empowerment: Enables owners to confidently perform maintenance and understand complex repairs, saving on dealership service costs. 📋 Manual Details Coverage Areas Coverage Scope: Operation, Maintenance, Service, Basic Repairs Page Count Estimated Page Count: High (Detailed service manuals typically range from 500-1500+ pages) Manual Type Manual Classification: Comprehensive Service and Repair Manual (Owner's Manual functions included) Language Language: English Format Digital Format: PDF 📖 Manual Coverage Systems Covered Powertrain: Engine mechanical, fuel system, ignition system, exhaust system, cooling system, lubrication system Drivetrain: Transmission (manual and automatic), clutch, driveshafts, differential, axles Chassis: Suspension (front and rear), steering system, brakes (hydraulic, ABS), wheels and tires Electrical: Battery, charging system, starting system, lighting, instruments, control modules (ECU, DME), body electronics, diagnostics (OBD-II) Body: Body panels, doors, windows, convertible top mechanism, interior trim, seats Procedures Included Maintenance Tasks: Oil change, filter replacement, spark plug replacement, coolant flush, brake fluid change, belt inspection and replacement, tire rotation Diagnostic Procedures: Troubleshooting charts, fault code interpretation, component testing Repair Procedures: Engine component removal and installation, transmission overhaul, brake system repair, suspension component replacement, electrical component repair Specifications And Data: Torque specifications, fluid capacities, clearances, diagnostic parameters, wiring diagrams Technical Depth Depth Of Coverage: Comprehensive; covers routine maintenance to advanced diagnostics and major component repairs. Includes factory-level technical details. 📊 Manual Specifications File Format Digital File Type: PDF (Portable Document Format) Print Quality Print Readability: High Resolution, Suitable for printing specific sections or the entire manual. Binding Type Digital Binding: N/A (Digital Download) Paper Type Digital Paper Simulation: N/A (Digital Download) Searchability Text Searchability: Likely Searchable Text (depending on PDF creation) ⚙️ Engine Specifications Primary Engine Engine Code: N52B30 Engine Type: Naturally Aspirated Inline 6-Cylinder Displacement: 2996 cc (3.0 Liters) Bore X Stroke: 85.0 mm x 88.0 mm Compression Ratio: 10.7:1 Valve Train: Double Overhead Camshafts (DOHC), 24 Valves, VANOS (Variable Valve Timing) Performance Horsepower: 225 hp (168 kW) @ 6100 rpm Torque: 214 lb-ft (290 Nm) @ 3500 rpm Fuel System Fuel Delivery: Sequential Multi-Port Fuel Injection (Bosch Motronic ME9.2) Fuel Type: Premium Unleaded Gasoline (91+ Octane Recommended) Cooling System Coolant Capacity: Approximately 7.0 Liters (with heater) Coolant Type: BMW Blue Ethylene Glycol Antifreeze Lubrication System Oil Capacity: Approximately 6.5 Liters (7.0 US quarts) with filter Recommended Oil Viscosity: SAE 0W-30 (BMW Longlife-01 FE or equivalent) 🔧 Transmission Standard Transmission Type Standard: 6-Speed Manual Transmission Optional Transmission Type Optional: 6-Speed Steptronic Automatic Transmission Features Steptronic Functionality: Allows manual gear selection via selector lever or paddle shifters (if equipped) Fluid Specs Manual Transmission Fluid Type: BMW MTF LT-2 or equivalent Automatic Transmission Fluid Type: BMW ATF LT-2 or equivalent 📐 Dimensions Exterior Length: 4092 mm (161.1 in) Width: 1781 mm (70.1 in) Height: 1303 mm (51.3 in) Wheelbase: 2495 mm (98.2 in) Front Track: 1471 mm (57.9 in) Rear Track: 1492 mm (58.7 in) Cargo Trunk Volume: 210 Liters (7.4 cu ft) Weights Curb Weight Manual: Approximately 1450 kg (3197 lbs) Curb Weight Automatic: Approximately 1495 kg (3296 lbs) 🛡️ Safety Features Ratings NHTSA Front Impact Driver: 5-Star (for comparable models of the era) NHTSA Front Impact Passenger: 5-Star (for comparable models of the era) Active Features Traction Control: Dynamic Traction Control (DTC) and/or Automatic Stability Control (ASC+T) Brake Assist: Yes (part of ABS system, enhances braking in emergency situations) Electronic Stability Control: Dynamic Stability Control (DSC) Passive Features Airbags: Front dual-stage airbags, side airbags integrated into seats Rollover Protection: Pop-up rollover protection bars behind seats Seatbelts: Three-point inertia-reel seatbelts with pretensioners and force limiters 💡 Technology Features Infotainment Infotainment System Name: BMW Business CD (standard), BMW Professional CD (optional) Optional Features: Navigation System (MK4), premium audio systems (e.g., Harman Kardon), CD changer Driver Assistance Cruise Control: Standard Parking Sensors: Optional (Rear Park Distance Control - PDC) Connectivity Connectivity Features: Bluetooth preparation (optional), USB interface (rare for this year, often aftermarket) 🔧 Maintenance Service Intervals Oil Change Interval: Variable; based on 'Condition Based Service' (CBS) system, typically around 10,000-15,000 miles or annually. Refer to manual for specific indicators. Brake Fluid Change: Every 2 years (BMW recommended) Coolant Change: Initial change at first major service, then every 2-4 years thereafter (BMW Blue coolant). Spark Plug Replacement: Around 60,000 miles (check manual for specific plug type and torque) Fluid Specifications Power Steering Fluid: Pentosin CHF 11S or equivalent hydraulic fluid Brake Fluid: DOT 4 (BMW High Performance DOT 4) Known Issues Common Wear Items: Clutch wear, suspension bushings, drive belts, water pump, VANOS solenoids (though...