Segment:
Compact Executive Sedan, Coupe, Convertible, and Wagon segment
Key Competitors:
Audi A4, Mercedes-Benz C-Class, Lexus IS, Infiniti G35/G37
Reputation:
Known for sporty handling, premium interiors, and advanced technology.
Manual Advantage:
Enables DIY owners to perform complex maintenance and repairs, saving significantly on dealership or independent mechanic costs.
Audience:
BMW E90/E91/E92/E93 owners, DIY enthusiasts, aspiring mechanics, small repair shops.
Engine Types Covered:
Petrol (Gasoline) Engines Only
Body Styles Covered:
Sedan (E90), Touring/Wagon (E91), Coupe (E92), Convertible (E93)
Transmission Types Covered:
All automatic and manual transmissions
Trim Levels Covered:
All trim levels (e.g., Base, Sport, M Sport, Luxury)
Estimated Page Count:
Extensive (typically 2000+ pages for a complete workshop manual)
Type:
Complete Workshop Service Repair Manual
Delivery Format:
Downloadable Digital File (PDF)
Engine Mechanical:
Engine assembly, cylinder head, crankshaft, pistons, connecting rods, timing systems, lubrication, cooling
Engine Management:
Fuel injection systems (direct and indirect), ignition systems, emission controls, sensors, actuators, ECU troubleshooting
Transmission:
Manual gearbox overhauls, automatic transmission diagnostics, repair, fluid changes, electronic control modules
Drivetrain:
Driveshafts, CV joints, differential, wheel bearings, axle shafts
Suspension:
Front and rear suspension components, shock absorbers, struts, springs, control arms, bushings, alignment procedures
Brakes:
Brake system diagnostics, hydraulic systems, ABS, DSC, brake pads, rotors, calipers, brake fluid
Steering:
Power steering system, steering rack, tie rods, steering column
Electrical System:
Battery, alternator, starter, wiring diagrams, fuses, relays, lighting systems, body control module (BCM)
Climate Control:
HVAC system operation, diagnostics, refrigerant servicing, blower motor, control modules
Body And Chassis:
Body panel removal and installation, doors, hood, trunk, interior trim, glass replacement
Infotainment And Comfort:
Radio, navigation, iDrive system troubleshooting, comfort features
Maintenance:
Oil changes, filter replacements, spark plug replacement, fluid level checks, brake fluid flush
Troubleshooting:
Diagnostic trouble codes (DTCs), symptom-based diagnostics, fault finding procedures
Repair:
Component replacement, system overhauls, rebuilding procedures
Diagnostics:
Detailed diagnostic flowcharts and procedures for all major systems
Specifications:
Torque specifications, clearances, fluid capacities, electrical specifications
Special Tools:
Listing and usage of specific BMW special tools required for certain repairs
Depth:
Comprehensive: Covers everything from routine maintenance to complete engine and transmission rebuilds, including detailed electrical troubleshooting and diagnostics.
Example Engine 1:
N52B30 (3.0L Inline-6, Naturally Aspirated)
Example Engine 2:
N54B30 (3.0L Inline-6, Twin-Turbocharged)
Example Engine 3:
N51B30 (3.0L Inline-6, Naturally Aspirated, SULEV)
Example Engine 4:
N46B20 (2.0L Inline-4, Naturally Aspirated)
Horsepower Range:
Approx. 215 hp to 300 hp (depending on specific engine variant)
Torque Range:
Approx. 200 lb-ft to 300 lb-ft (depending on specific engine variant)
Injection Type:
Fuel injection (specific type varies by engine, e.g., Multi-point injection or Direct Injection)
Fuel Type:
Premium Unleaded Gasoline
NHTSA Front Impact:
5-Star (typically for Sedan models)
IIHS Top Safety Pick:
Yes (for most model years)
Stability Control:
Dynamic Stability Control (DSC), including DTC (Dynamic Traction Control)
Braking Systems:
Anti-lock Braking System (ABS), Electronic Brake-force Distribution (EBD), Brake Assist
Airbags:
Front airbags, side-impact airbags, front and rear head protection system (air curtains)
Oil Change Interval:
Typically every 10,000 to 15,000 miles or annually, depending on driving conditions and oil type. The vehicle's condition-based service (CBS) system will indicate specific intervals.
Brakes Fluid Interval:
Every 2 years, regardless of mileage.
Coolant Interval:
BMW Long-Life Coolant, typically replaced at around 4-5 years or 50,000-60,000 miles, but consult the manual for specific intervals.
Engine Oil:
BMW Longlife-01 (LL-01) or Longlife-04 (LL-04) approved synthetic oil, typically SAE 0W-30 or 5W-30 depending on climate and engine.
Transmission Fluid Manual:
API GL-4 or GL-5 specification manual transmission fluid (specific viscosity varies).
Transmission Fluid Automatic:
ZF LifeguardFluid 6 (or equivalent meeting BMW specification ATF LT-5).
Brake Fluid:
DOT 4, BMW High Performance Brake Fluid.
Common E90 Issues:
Valve cover gasket leaks, oil pan gasket leaks, water pump and thermostat failures (electric pumps), ignition coil and spark plug issues, power steering hose leaks, VANOS solenoid issues, fuel injector problems (especially on N54), carbon buildup (on direct injection engines).
Bmw Focus:
BMW is renowned for its 'Ultimate Driving Machine' philosophy, emphasizing performance, handling, and driver engagement.
E90 Introduction:
The E90 generation replaced the E46 3 Series and introduced new technologies and powertrains. It marked a significant step forward in design and engineering for BMW's core model.
Platform Variants:
The E90 sedan, E91 touring, E92 coupe, and E93 convertible shared a common platform and many components, allowing for a unified repair approach across these body styles.
