🏷️ Basic Information Identification Make: BMW Model: 750iL Year: 1994 Chassis Code: E38 Body Style: Long Wheelbase Sedan Codes Engine Code Variant: M70B50 (V12) 👋 Introduction Market Position Market Segment: Full-size luxury sedan, flagship model for BMW. Competitive Analysis Competitors: Mercedes-Benz S-Class (W140), Jaguar XJ, Lexus LS. Key Features Luxury Appointments: Renowned for its advanced technology, superior comfort, and powerful V12 engine, setting a benchmark for luxury sedans of its era. Manual Purpose: To provide comprehensive, authoritative repair and maintenance information for the 1994 BMW 750iL, enabling owners and technicians to maintain optimal performance and longevity. 📋 Manual Details Coverage Areas General Coverage: Comprehensive service, repair, diagnostics, and maintenance Specific Systems Covered: Engine, Drivetrain, Suspension, Steering, Brakes, Electrical System, HVAC, Bodywork, Fuel System, Exhaust System, Emissions Control, Diagnostic Procedures, Troubleshooting Page Count Estimated Page Count: 1000+ Manual Type Type: Factory Service Manual / Workshop Manual Language Language: English Format Format: Digital (Likely PDF, may vary by reseller) 📖 Manual Coverage Systems Covered Powertrain: Detailed coverage of the M70 V12 engine, including its dual VANOS, ignition, fuel injection, and cooling systems. Transmission (automatic) overhaul, diagnostics, and fluid specifications. Chassis And Suspension: Front and rear suspension components (including EDC - Electronic Damper Control), steering system (hydraulic power steering), wheel alignment specifications, and brake system (ABS, DSC). Electrical And Electronics: Extensive coverage of the E38's complex electrical system, including wiring diagrams, ECU diagnostics, lighting, power windows, central locking, climate control electronics, and infotainment components. Procedures Included Routine Maintenance: Oil changes, filter replacements, spark plug service, coolant flushes, brake fluid replacement, air filter service, and scheduled inspections. Repair And Rebuild: Engine internal component overhaul (pistons, rings, bearings, valves), cylinder head removal and installation, transmission rebuild, suspension component replacement, brake caliper overhaul, and body panel repair. Diagnostics And Troubleshooting: Step-by-step diagnostic procedures for common issues, symptom-based troubleshooting guides, and interpretation of diagnostic trouble codes (DTCs) using appropriate BMW diagnostic tools (e.g., GT1, DIS). Technical Depth Depth: Expert level, suitable for professional mechanics and experienced DIY enthusiasts. Includes torque specifications, component tolerances, and detailed disassembly/assembly instructions. 📊 Manual Specifications File Format Digital Format: High-resolution, text-searchable PDF with clear diagrams and illustrations. Printable pages. Print Quality Illustration Quality: Sharp, clear, and accurate diagrams, schematics, and photographs. Binding Type Digital Binding: N/A (Digital Format) Paper Type Digital Paper Type: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Name: M70 Engine Type: V12, Naturally Aspirated Displacement: 5.0 Liters (4988 cc) Bore X Stroke: 84.0 mm x 90.0 mm Compression Ratio: 8.8:1 Performance Horsepower: 296 hp @ 5200 rpm Torque: 332 lb-ft @ 3900 rpm Fuel System Fuel Delivery: Electronic Multi-Point Fuel Injection (Bosch Motronic M7.1) Fuel Type: Premium Unleaded Gasoline (91+ octane) Engine Management Ignition System: Distributorless ignition with individual coil packs per cylinder bank (2 ignition coils, 12 spark plugs) 🔧 Transmission Standard Transmission Type: 4-speed Automatic (ZF 4HP24) Optional Optional Transmission: N/A (Automatic standard for 750iL) Features Gear Ratios: 1st: 2.48, 2nd: 1.48, 3rd: 1.00, 4th: 0.75, Reverse: 2.08 Transmission Fluid: Dexron III (or equivalent ATF) 📐 Dimensions Exterior Wheelbase: 120.7 inches (3065 mm) Length: 201.5 inches (5118 mm) Width: 73.5 inches (1867 mm) Height: 55.7 inches (1415 mm) Weights Curb Weight: 4400 - 4500 lbs (approx.) 🛡️ Safety Features Ratings NHTSA Ratings: Not directly rated by NHTSA for this model year in its current format. Likely good frontal crash protection for its time. Active Features Braking System: Four-wheel Anti-lock Braking System (ABS), ventilated discs front and rear. Traction Control: Available Automatic Stability Control (ASC) on some models. Passive Features Airbags: Driver's side airbag; passenger airbag became more common in later E38 variants or as an option. Seatbelts: Three-point inertia-reel seatbelts with front pretensioners. Body Construction: Reinforced safety cage, crumple zones front and rear. 💡 Technology Features Infotainment Audio System: BMW Professional RDS radio with cassette player, optional CD changer, and premium sound system options (e.g., Harman Kardon). Navigation: Optional BMW Business or Professional Navigation System with CRT screen. Driver Assistance Cruise Control: Standard electronic cruise control. Parking Assistance: Optional rear parking sensors (Park Distance Control). Connectivity Phone System: Optional integrated mobile phone system. 🔧 Maintenance Service Intervals Oil Change Interval: Approximately 7,500 - 10,000 miles or 12 months, based on BMW's Condition Based Service (CBS) or specified intervals. Transmission Fluid Change: Recommended every 60,000 miles or as per CBS, although sealed for life on some earlier designs, service is often recommended. Spark Plug Replacement: Typically around 60,000 miles for the 12 spark plugs. Fluid Specifications Engine Oil: BMW Longlife-01 (LL-01) or equivalent 5W-30 or 5W-40 synthetic oil. Consult manual for exact grade. Coolant: BMW Premium Antifreeze/Coolant (Blue) or equivalent G48 ethylene glycol-based coolant. Brake Fluid: DOT 4 High Performance Synthetic Brake Fluid. Known Issues Engine M70: Spark plug fouling (due to coil issues or oil consumption), cooling system leaks (plastic components), idle control issues (IAC...