🏷️ Basic Information Identification Make: BMW Model: 5 Series Model Variant: 525 Codes Chassis Code: E34 Generation Generation Designation: Second Generation 👋 Introduction Market Position Positioning: The BMW 5 Series E34 was positioned as a premium executive sedan, renowned for its driving dynamics, build quality, and sophisticated engineering. Competitive Analysis Competitors: Competed directly with luxury sedans from Mercedes-Benz (W124 E-Class), Audi (V8/A8), Lexus (LS), and Jaguar (XJ). Key Features Defining Attributes: Excellent handling, powerful inline-six engines, sophisticated independent suspension, luxurious interior appointments, and advanced (for its time) safety features. Manual Value Proposition Value For Owner: Empowers owners and independent mechanics to perform maintenance and repairs accurately, saving costs compared to dealership service and ensuring proper vehicle upkeep. Instant Download Benefit Benefit: Provides immediate access to critical repair information, eliminating shipping delays and costs. 📋 Manual Details Coverage Areas Covered Years: 1989, 1990, 1991, 1992, 1993, 1994, 1995 Page Count Total Pages: 450 Manual Type Type: Workshop Service Manual / Repair Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Powertrain: Engine (M50B25), transmission, drivetrain, fuel system, exhaust system. Chassis: Suspension (front/rear), steering system, braking system (ABS included). Electrical: Complete electrical system diagrams, lighting, ignition, starting, charging, instrument cluster, ECUs. Bodywork: Body and chassis repair, body panels, doors, windows, interior trim, HVAC system. Procedures Included Maintenance: Routine service, oil changes, filter replacements, fluid checks, lubrication. Troubleshooting: Diagnostic procedures for common and uncommon faults, fault code interpretation (where applicable). Repair: Step-by-step instructions for component removal, installation, and overhaul. Diagnostics: Detailed diagnostic flowcharts and testing procedures for all major systems. Technical Depth Depth: Comprehensive, covering basic to advanced repairs, including engine rebuilds, transmission overhauls, and electrical system diagnostics. Manual Completeness Scope: Comprehensive repair and maintenance procedures for all major mechanical and electrical systems. Diagrams: Includes detailed wiring diagrams, exploded views, and component illustrations. 📊 Manual Specifications File Format File Type: PDF Print Quality Quality: High-resolution scans of original documentation, ensuring clarity of text and diagrams. Binding Type Binding: N/A (Digital Download) Paper Type Paper: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Code: M50B25 Engine Type: Naturally Aspirated Inline 6-Cylinder Displacement: 2.5 Liters (2494 cc) Performance Horsepower: 189 hp (approx.) @ 6000 rpm Torque: 245 Nm (approx. 181 lb-ft) @ 4700 rpm Fuel System System Type: Bosch Motronic Electronic Fuel Injection (EFI) Fuel Type Fuel Requirement: Premium Unleaded Gasoline (91+ octane recommended) Engine Management Management System: Electronic Engine Control Unit (ECU) Timing Valve Timing: Dual Overhead Camshafts (DOHC), 4 valves per cylinder. 🔧 Transmission Standard Type: 5-Speed Manual Transmission Optional Type: 4-Speed Automatic Transmission (ZF 4HP-22 EH) Features Rear Wheel Drive: All models feature rear-wheel drive. Clutch Clutch Type: Hydraulically actuated single dry plate clutch (for manual transmission). 📐 Dimensions Exterior Length: Approx. 4720 mm (185.8 in) Width: Approx. 1751 mm (68.9 in) Height: Approx. 1412 mm (55.6 in) Weights Curb Weight: Approx. 1500-1600 kg (3300-3500 lbs), depending on transmission and options. Wheelbase Wheelbase: Approx. 2760 mm (108.7 in) Cargo Trunk Capacity: Approx. 530 Liters (18.7 cu ft) 🛡️ Safety Features Ratings Safety Standards: Designed to meet contemporary safety standards of its era. Active Features ABS: Anti-lock Braking System (ABS) standard on most models. Passive Features Airbags: Driver airbag became standard during the E34's production run. Seatbelts: Three-point seatbelts for all occupants. Structure Body Structure: Reinforced safety cage, crumple zones. 💡 Technology Features Infotainment Audio System: Optional premium sound systems from manufacturers like Nakamichi or Blaupunkt. Standard cassette player with AM/FM radio. Driver Assistance Cruise Control: Standard cruise control on most models. Connectivity Onboard Computer: Optional onboard computer (OBC) providing trip data, fuel consumption, and system checks. Climate Control HVAC System: Manual or optional automatic climate control (ECC - Electronic Climate Control). Lighting Headlights: Halogen headlights, with optional Xenon HID headlights available on late models/specific markets. 🔧 Maintenance Service Intervals Oil Change: Every 7,500-10,000 miles (12,000-16,000 km) or annually, depending on driving conditions and oil type used. Coolant Flush: Every 2-3 years or 30,000-50,000 miles (48,000-80,000 km). Transmission Fluid: Manual: Check condition, change if contaminated. Automatic: Fluid and filter change every 50,000-80,000 miles (80,000-128,000 km) is recommended. Fluid Specifications Engine Oil: SAE 5W-30, 5W-40 or 10W-40, API SG or higher. Consult manual for specific BMW approvals (e.g., BMW Longlife-98). Coolant: BMW Blue/Green Ethylene Glycol Antifreeze (50/50 mix with distilled water). Brake Fluid: DOT 4 specification. Power Steering Fluid: BMW approved CHF 11S hydraulic fluid or equivalent Dexron III/Mercon ATF. Manual Transmission Fluid: GL-4 rated gear oil (e.g., SAE 75W-90 or 80W-90). Automatic Transmission Fluid: Dexron III / Mercon ATF. Known Issues Cooling System: Plastic coolant expansion tanks can become brittle and crack. Water pump bearings can fail. Suspension: Worn control arm bushings, ball joints, and shock absorbers are common due to age and mileage. Rear subframe mounts can wear. Electrical: Corroded ground points, failing ABS sensors, window regulator...