🏷️ Basic Information Identification Make: BMW Model: 5 Series Model Variant: 525i, 535i, M5 Chassis Code: E34 Year Range: 1989-1990 Codes Manual Focus: Electrical Troubleshooting Generation E Series Generation: E34 (Third Generation BMW 5 Series) 📋 Manual Details Coverage Areas Electrical Systems: Comprehensive coverage including power distribution, fuses, grounds, engine control, charging, starting, transmission control, SRS, ABS, power accessories, lighting, climate control, audio, security, and onboard computer. Component Locations: Component location charts, views, and splice/connector views are included. Lighting Systems: Covers headlights, fog lights, turn/hazard lights, park/tail/underhood lights, license plate/luggage compartment lights, backup lights, brake lights, interior lights, glove box light, cassette box/ashtray lights, and charging socket. Comfort Features: Includes power mirrors, central locking, power windows, power seats, heated seats, power sunroof, and windshield washer jet heaters. Climate Control: Covers park ventilation, rear window defogger, and integrated climate regulation. Information Systems: Covers instrument cluster, multi-function clock, onboard computer, and radio/CD player/Hi-Fi systems, and cellular telephone. Utility Systems: Includes horn, wiper/washer module, and headlight washer systems. Page Count Estimated Page Count: Undetermined (based on listed contents, likely extensive) Manual Type Type: Repair Manual / Technical Information Manual Target Audience: Professional Garages/Workshops, DIY Enthusiasts with basic mechanical knowledge Language Language: English Format Format: Likely printed book with diagrams, illustrations, and step-by-step explanations. ⚙️ Engine Specifications Primary Engine Engine 525I: M20B25 - 2.5L Inline-6 (SOHC) Engine 535I: M30B35 - 3.5L Inline-6 (SOHC) Engine M5: S38B36 - 3.6L Inline-6 (DOHC) Performance Horsepower 525I: ~170 hp @ 5800 rpm (approximate) Torque 525I: ~220 Nm (approximate) Horsepower 535I: ~208 hp @ 5700 rpm (approximate) Torque 535I: ~305 Nm (approximate) Horsepower M5: 310 hp @ 6900 rpm Torque M5: 360 Nm @ 4750 rpm Fuel System Fuel Delivery: Bosch Motronic Electronic Fuel Injection (EFI) across all models, with variations specific to engine codes. Engine Management Engine Control: Covered by the 'Engine Control System' section. Diagnostic Interface: Data Link specified, implying OBD-I or proprietary BMW diagnostic port. 🔧 Transmission Standard Transmission 525I 535I: 5-speed manual (Getrag 260/5 or similar) Optional Transmission 525I 535I: 4-speed automatic (ZF 4HP22 or similar) Transmission M5: 5-speed manual (Getrag 280/5) Features Electronic Control: Electronic transmission control (ETC) for automatic transmissions is a documented system. 📐 Dimensions Exterior Body Styles: Sedan (4-door), Touring (5-door wagon) Weights Curb Weight Approx 525I: 1550-1650 kg (depending on options and body style) Curb Weight Approx 535I: 1600-1700 kg (depending on options and body style) Curb Weight Approx M5: 1700-1800 kg (depending on options) 🛡️ Safety Features Features Supplemental Restraint System: SRS (Supplemental Restraint System) is a listed component within the manual, indicating airbag systems. Slip Control: ABS (Anti-lock Braking System) is listed, indicating its presence and coverage for troubleshooting. Crash Control: A 'Crash Control module' is listed, suggesting advanced safety or vehicle management systems. Anti Theft System: An 'Anti Theft system' is covered, highlighting a security feature. 🔧 Maintenance Service Intervals General Oil Change: Refer to vehicle-specific service schedule, typically around 5,000-10,000 miles or 6-12 months. Major Service Points: Spark plugs, filters (air, fuel, cabin), coolant, brake fluid, transmission fluid are key service items. Fluid Specifications Engine Oil: Refer to manual for specific viscosity (e.g., 10W-40, 15W-50) based on climate and engine. Coolant: Ethylene glycol-based coolant, typically a 50/50 mix with distilled water. Brake Fluid: DOT 3 or DOT 4 brake fluid. Transmission Fluid Auto: Dexron II or equivalent automatic transmission fluid. Transmission Fluid Manual: GL-4 or GL-5 gear oil, specific viscosity to be confirmed in manual.