🏷️ Basic Information Identification Make: BMW Model: 525i Model Code: E39 Production Years Covered By Manual: 1997, 1998, 1999, 2000, 2001, 2002 Codes Engine Codes: M50B25TU (early), M52B25, M52TUB25 👋 Introduction Market Position Market Segment: Executive Sedan Target Audience: Owners, independent repair shops, DIY enthusiasts seeking in-depth repair knowledge. Competitive Analysis Competitors: Mercedes-Benz E-Class (W210), Audi A6 (C5), Lexus GS (JZS160), Jaguar S-Type. Key Features Vehicle Philosophy: Focus on driving dynamics, luxury, and sophisticated engineering. Manual Advantage: Provides the detailed technical information necessary for authentic BMW maintenance and repair, crucial for preserving performance and longevity. 📋 Manual Details Coverage Areas Manual Scope: Comprehensive Workshop Service and Repair Page Count Page Count: 1002 Manual Type Manual Type: Workshop Service Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Engine: Complete engine diagnostics, disassembly, assembly, timing, cooling system, lubrication system, fuel delivery, ignition system, emissions control. Transmission: Manual and automatic transmission service, overhaul, diagnosis, fluid specifications, shift control systems. Drivetrain: Driveshafts, CV joints, differential, rear axle assembly, wheel bearings. Suspension: Front and rear suspension components, shock absorbers, struts, control arms, bushings, alignment specifications, troubleshooting. Brakes: Hydraulic system, ABS, DSC (Dynamic Stability Control), brake pad replacement, rotor resurfacing/replacement, caliper service, bleeding procedures. Steering: Power steering system, steering rack, tie rods, steering column, diagnosis and repair. Electrical System: Battery, charging system, starter, lighting, body electronics, instrument cluster, power windows, locks, mirrors, diagnosis using wiring diagrams. Climate Control: HVAC system, A/C system diagnosis and recharge, heater core, blower motor, climate control unit. Body And Chassis: Exterior panels, interior trim, doors, windows, bumpers, underbody, rust prevention, body repair procedures. Safety Systems: Airbag system (SRS) diagnosis and replacement, seat belt mechanisms. Procedures Included Maintenance: Oil changes, filter replacements, spark plug replacement, fluid checks and changes, belt replacement, brake service, tire rotation. Repair: Detailed step-by-step repair instructions for all major mechanical and electrical components. Troubleshooting: Diagnostic charts and symptom-based troubleshooting guides for common and complex issues. Diagnostics: OBD-II diagnostic procedures, fault code interpretation, sensor testing, ECU diagnostics. Rebuilds: Engine and transmission rebuild procedures with component specifications and tolerances. Specifications: Torque specifications, clearances, fluid capacities, electrical resistance values. Technical Depth Depth: Comprehensive, from basic maintenance to complete engine/transmission overhauls and advanced electrical diagnostics. 📊 Manual Specifications File Format File Type: PDF Searchability: Searchable text enabled Printability: Printable pages Print Quality Image Resolution: High resolution for clear diagrams and illustrations Binding Type Binding: N/A (Digital PDF) Paper Type Paper: N/A (Digital PDF) ⚙️ Engine Specifications Primary Engine Engine Type: Inline 6-cylinder, DOHC, 24-valve Displacement: 2.5 Liters (2494 cc) Engine Code Common: M52B25 / M52TUB25 Performance Horsepower Peak: 189 hp @ 5900 rpm (approximate, varies slightly by market/year) Torque Peak: 245 Nm / 181 lb-ft @ 3950 rpm (approximate) Engine Management System: Bosch Motronic (various versions like ME 7.2) Fuel System Fuel Type: Unleaded Gasoline (Premium recommended) Fuel Delivery: Electronic Fuel Injection (EFI), Sequential Multi-Point Injection (MPI) Engine Internals Valvetrain: Double Overhead Camshafts (DOHC), 4 valves per cylinder, VANOS (Variable Valve Timing) on intake camshaft. 🔧 Transmission Standard Transmission Type Standard: 5-speed Manual (Getrag 260/5, later ZF S5-31) Optional Transmission Type Optional: 5-speed Automatic (Steptronic, GM 5L40-E) Features Automatic Features: Steptronic manual shifting mode. Fluid Specifications Automatic Transmission Fluid: Dexron III / Mercon equivalent (e.g., BMW Part No. 83 22 0 031 307) Manual Transmission Fluid: MTF LT-2 or equivalent (e.g., BMW Part No. 83 22 9 408 092) 📐 Dimensions Exterior Length: ~4770 mm / 187.8 in Width: ~1800 mm / 70.9 in Height: ~1435 mm / 56.5 in Weights Curb Weight: ~1500-1600 kg / 3300-3520 lbs (varies by transmission and options) Wheelbase: ~2830 mm / 111.4 in 🛡️ Safety Features Ratings NHTSA Front Impact: 4-star (driver), 4-star (passenger) for E39 platform IIHS Side Impact: Good (for E39 platform) Active Features Traction Control: ASC+T (Automatic Stability Control and Traction) often standard or optional. Stability Control: DSC (Dynamic Stability Control) available on later models. Braking System: ABS (Anti-lock Braking System) standard, EBD (Electronic Brake-force Distribution). Passive Features Airbags: Frontal airbags (driver and passenger), side airbags (optional), head airbags (optional). Seatbelts: Pretensioners and force limiters on front seat belts. 💡 Technology Features Infotainment Audio System: BMW Business/Professional CD radios, optional Harman Kardon audio system. Navigation: Optional BMW Navigation system (MKII/MKIII era) with CRT or LCD screen. Driver Assistance Parking Sensors: Optional Park Distance Control (PDC) front and rear. Cruise Control: Standard electronic cruise control. Connectivity Phone Integration: Optional Bluetooth preparation with ULF module for hands-free calling (on later models). 🔧 Maintenance Service Intervals Oil Change Interval: BMW Condition Based Service (CBS) typically around 10,000-15,000 miles or 12-24 months. Refer to manual for specific CBS prompts. Spark Plug Replacement: Approx. 100,000 miles (Long-Life Platinum/Iridium spark plugs). Coolant Flush: Every 2-4 years or as indicated by CBS. Use BMW Blue Coolant (G48). Fluid Specifications Engine Oil Type: API SJ or higher,...