🏷️ Basic Information Identification Make: BMW Model: 3 Series (E90 Sedan) Model Line: 3 Series Chassis Code: E90 (Sedan) Applicable Years: 2006, 2007, 2008, 2009, 2010 Body Styles Covered: Sedan Codes Engine Codes Likely Covered: N52B25, N52B30, N54B30, M54B30 (early 2006), N46B20 (in certain markets) 👋 Introduction Market Position Target Audience: BMW owners, independent repair shops, DIY enthusiasts seeking professional-level repair information. Competitive Analysis Advantage: Official factory manual provides superior accuracy and completeness compared to aftermarket publications. Value Proposition: Enables significant savings on labor costs by empowering owners to perform their own maintenance and repairs. Key Features Searchability: PDF format allows for easy keyword searching to quickly locate specific information. Illustration Quality: Features detailed illustrations, drawings, photos, and enlarged inset views for clarity. Navigation: Numbered table of contents for rapid information retrieval. 📋 Manual Details Coverage Areas Primary Coverage: Complete factory service and repair for BMW E90 Sedan Secondary Coverage: Troubleshooting, maintenance, diagnostics, all repair procedures Page Count Estimated Page Count: Hundreds of pages (exact number not specified but implied to be comprehensive) Manual Type Type: Factory Service Repair Manual Source: Genuine Factory Manuals (not 3rd party) Language Language: English Format File Format: PDF Delivery Method: Download 📖 Manual Coverage Systems Covered Engine Service Repair: Includes detailed procedures for engine assembly, disassembly, diagnostics, and repair for various engine variants. Transmission Service Repair: Covers both manual and automatic transmission service, repair, overhaul, and fluid specifications. Brake System: Detailed coverage of braking system components, maintenance, repair, bleeding procedures, and specifications. Wiring Diagrams: Comprehensive electrical wiring diagrams for all vehicle systems. Electrical System: In-depth diagnostic and repair procedures for all electrical components and systems. Suspension: Service and repair procedures for front and rear suspension components, alignment specifications. Periodic Lubrication: Guidelines for lubrication points, fluid types, and service intervals. Steering: Repair and maintenance of steering system components, power steering, and alignment. Cooling System: Service and repair of radiator, coolant, water pump, thermostat, and related components. Fuel Injection Fuel System: Diagnostics, repair, and maintenance of fuel delivery, injection systems, and fuel pump. Emission System: Information on emission control systems, catalytic converters, and diagnostic procedures. Heater Air Conditioning: Service and repair for HVAC systems, including refrigerant and component diagnostics. Engine Control System: Details on ECU, sensors, actuators, and diagnostic trouble codes (DTCs). Chassis Body: Information on chassis structure, body panels, doors, and associated repairs. Restraint System: Coverage of airbags, seatbelts, and related safety systems. Interior: Procedures for interior trim removal, installation, and component servicing. Differential Drive: Service and repair of rear differential and drive axles. Axle: Specific procedures for front and rear axle maintenance and repair. General Maintenance: Routine maintenance procedures and schedules. Troubleshooting: Advanced troubleshooting guides and diagnostic strategies for common and complex issues. Procedures Included Repair Procedures: Step-by-step repair instructions for virtually all vehicle systems. Maintenance Procedures: Detailed guidance on all scheduled and preventative maintenance tasks. Diagnostic Procedures: Comprehensive diagnostic workflows and troubleshooting trees. Rebuilding Overhaul: Procedures for major component overhauls (engine, transmission, differentials). Tuning Modifications: While primarily a service manual, it provides foundational knowledge beneficial for tuning. Technical Depth Depth: Complete factory-level technical detail for technicians and advanced DIYers. Detail Level: Includes detailed substeps, notes, cautions, warnings, numbered instructions, and callouts for illustrations. 📊 Manual Specifications File Format Compatibility: Works on all PC-based Windows operating systems and Mac. Portability: Can be saved to hard drive and burned to CD-ROM. Print Quality Printability: Printable without restriction, individual pages or the entire manual. Resolution: High resolution PDF. Binding Type Binding: Digital Download (PDF), no physical binding. Paper Type Paper Type: N/A (Digital File) Requirements Software Requirements: Adobe PDF Reader. ⚙️ Engine Specifications Primary Engine Engine Families Likely Covered: N52 (Naturally Aspirated Inline-6), N54 (Twin-Turbocharged Inline-6), M54 (Older Inline-6 in early 2006 models), N46 (4-cylinder in some markets) Performance Representative Performance 325I: Approx. 215-218 hp, 200-215 lb-ft torque (N52B25/B30) Representative Performance 328I: Approx. 230-235 hp, 210-220 lb-ft torque (N52B30) Representative Performance 330I: Approx. 255-270 hp, 220-255 lb-ft torque (N52B30/N54B30) Representative Performance 335I: Approx. 300 hp, 300 lb-ft torque (N54B30) Fuel System Fuel Injection Type: Electronic Fuel Injection (EFI), Direct Injection (Di) on N54 models. 🔧 Transmission Standard Manual Transmission Options: 6-speed Getrag GS6-37DZ (e.g., 325i, 328i, 330i), 6-speed ZF GS6-53DZ (e.g., 335i) Optional Automatic Transmission Options: 6-speed ZF 6HP19 (e.g., 325i, 328i, 330i), 6-speed ZF 6HP28 (e.g., 335i) Features Transmission Features: SMG (Sequential Manual Gearbox) was an option on some earlier models, but less common on E90 post-facelift. Steptronic functionality on automatics. 📐 Dimensions Exterior Wheelbase: Approximately 108.7 inches (2760 mm) Length: Approximately 179.1 inches (4550 mm) Width: Approximately 69.2 inches (1757 mm) Height: Approximately 56.2 inches (1428 mm) Weights Curb Weight Range: Approximately 3400 - 3700 lbs (1542 - 1678 kg) depending on engine and options. 🛡️ Safety Features Ratings NHTSA Front Impact: 5 Stars (for 2006-2010 models) IIHS Top Safety Pick: Yes (multiple years...