🏷️ Basic Information Identification Make: BMW Model: 750iL Year: 1988 Codes Chassis Code: E32 Engine Code Group: M70 👋 Introduction Market Position Segment: Full-size Luxury Sedan Positioning: Flagship model, showcasing BMW's engineering prowess and luxury. Competitive Analysis Key Competitors: Mercedes-Benz S-Class, Jaguar XJ, Lexus LS Key Features Powertrain: V12 engine, advanced for its time. Luxury: Exceptional interior comfort, advanced features for the era. Technology: Early adoption of electronic systems, including ABS and a rudimentary onboard computer. 📋 Manual Details Coverage Areas Primary Coverage: Full Service and Repair Secondary Coverage: Maintenance, Rebuilding, Refurbishing, Restoration Page Count Estimated Page Count: 1500+ Manual Type Type: Factory Service Manual (FSM) Language Language: English Format Format: Digital (likely PDF) File Format Quality: High-resolution scans, searchable text (if digitally converted) Print Quality: Professional quality for printing Binding Type: N/A (Digital format) Paper Type: N/A (Digital format) 📖 Manual Coverage Systems Covered Powertrain: Engine (M70 V12), Fuel System, Ignition System, Cooling System, Exhaust System, Transmission (Automatic) Chassis: Suspension (Front & Rear), Steering, Brakes (Front & Rear), Wheels & Tires Electrical: Vehicle Electrical System, Battery, Alternator, Starter, Lighting, Instrumentation, On-Board Computer (OBC), Check Control System, ABS System Body: Body Structure, Doors, Hood, Trunk, Bumpers, Exterior Trim, Interior Trim, HVAC System (Climate Control), Seats Procedures Included Maintenance: Oil Change, Filter Replacement, Fluid Checks & Replacements, Spark Plug Replacement, Belt Inspection & Replacement, Brake Pad Replacement Repair: Engine Overhaul, Transmission Service, Suspension Component Replacement, Brake System Repair, Electrical Component Diagnosis & Replacement, HVAC System Repair Diagnostics: Troubleshooting Flowcharts, Symptom-Based Diagnosis, Component Testing Procedures, Diagnostic Trouble Codes (DTCs) Rebuilding: Engine Component Rebuilds (e.g., Cylinder Heads, Crankshaft), Transmission Rebuilds Restoration: Detailed guidance on component restoration, upholstery repair, trim replacement, and paint correction techniques. Technical Depth Depth: Comprehensive (from basic maintenance to complete engine and transmission rebuilds) Wiring Diagrams: Detailed Electrical Schematics and Wiring Diagrams Special Tools: Identification and usage of BMW-specific special tools Torquespecs: Precise torque specifications for all critical fasteners and engine components. ⚙️ Engine Specifications Primary Engine Engine Type: V12, SOHC (Single Overhead Camshaft), 48 Valves Engine Code: M70 B50 Displacement: 4988 cc (5.0 Liters) Bore X Stroke: 84.0 mm x 91.0 mm Compression Ratio: 8.8:1 Performance Horsepower: 300 PS (296 hp; 221 kW) at 5200 rpm Torque: 470 Nm (347 lb-ft) at 3900 rpm Fuel System Fuel Delivery: Bosch Motronic DME electronic fuel injection with two injectors per cylinder (total 24 injectors) Fuel Type: Premium Unleaded Gasoline (91 Octane or higher) Fuel Tank Capacity: 80 Liters (21.1 US gallons) Cooling System Coolant Capacity: 13.5 Liters (14.3 US quarts) Coolant Type: BMW Premium Antifreeze (Ethylene Glycol based) Ignition System Ignition Type: Distributorless ignition with two spark plugs per cylinder 🔧 Transmission Standard Transmission Type: 4-speed Automatic Transmission Model: ZF 4HP24 Optional Optional Transmission: None (5-speed manual was not offered on the 750iL) Features Features: Electronic control, Sport and Economy modes Fluid Capacity Fluid Type: BMW ATF LT-3 (or equivalent Dexron III) Fluid Capacity: Approx. 7.0 Liters (7.4 US quarts) for a complete fluid change 📐 Dimensions Exterior Wheelbase: 2990 mm (117.7 inches) Length: 5024 mm (197.8 inches) Width: 1800 mm (70.9 inches) Height: 1430 mm (56.3 inches) Weights Curb Weight: 1960 kg (4321 lbs) Gross Weight: 2460 kg (5423 lbs) Payload Capacity: 500 kg (1102 lbs) Cargo Trunk Capacity: 500 Liters (17.7 cubic feet) 🛡️ Safety Features Ratings NHTSA Rating: Not rated by NHTSA for this era. Active Features ABS: Standard Anti-lock Braking System (ABS) Traction Control: Optional ASC (Automatic Stability Control) Passive Features Airbags: Driver's airbag standard, passenger airbag optional. Seatbelts: Front and rear seatbelts, front seatbelt pretensioners. Chassis Structure: Reinforced safety cage, crumple zones. 💡 Technology Features Infotainment Audio System: BMW Bavaria C Reverse RDS radio/cassette player with integrated amplifier, optional CD changer. Navigation: Optional early GPS navigation system (BMW Navigator). Driver Assistance Cruise Control: Standard electronic cruise control. Parking Assist: Optional rear parking sensors (early implementation). Connectivity Obc: On-Board Computer (OBC) for vehicle status, diagnostics, and trip computer functions. Comfort Features Climate Control: Dual-zone automatic climate control system. Seats: Electrically adjustable front seats with memory function, heated front and rear seats (optional). Lighting Headlights: Halogen headlights, optional Xenon HID headlights (later in production). 🔧 Maintenance Service Intervals Oil Change Interval: Every 15,000 km (9,300 miles) or 12 months, whichever comes first (BMW Longlife Service concept). Air Filter Replacement: Every 30,000 km (18,600 miles) or 24 months. Spark Plug Replacement: Every 100,000 km (62,000 miles) for platinum-tipped spark plugs. Brake Fluid Flush: Every 2 years (regardless of mileage). Fluid Specifications Engine Oil Type: BMW High Performance SAE 5W-30 or 5W-40 synthetic oil meeting BMW Longlife-98 specification. Engine Oil Capacity: 7.5 Liters (7.9 US quarts) with oil filter change. Power Steering Fluid: BMW Power Steering Fluid (CHF 11S or equivalent) Known Issues Common Problems: Ignition coil failures, fuel injector issues (especially the secondary injectors), coolant leaks from plastic components,...