Vehicle Segment:
Compact Executive Car (Premium Sport Sedan/Coupe/Convertible/Wagon)
Brand Reputation:
BMW is renowned for its 'Ultimate Driving Machine' philosophy, emphasizing performance, luxury, and advanced engineering.
Primary Competitors:
Audi A4, Mercedes-Benz C-Class, Lexus IS, Infiniti G37.
Vehicle Philosophy:
The E90/E91/E92/E93 generation 3 Series embodies balanced handling, powerful inline-six engines, and a driver-focused interior.
Manual Purpose:
Provides comprehensive, factory-level repair and maintenance information for DIY enthusiasts and professional technicians.
Engine Mechanical:
Complete engine overhaul, component diagnostics, timing, cylinder head, block assembly, lubrication, cooling.
Engine Management:
Fuel injection, ignition system, sensors, actuators, ECU diagnostics, emission control systems.
Transmission:
Automatic Transmission (GA6HP19Z) and Manual Transmission (GS6-37BZ/DZ) service, repair, fluid changes, diagnostics, mechatronics.
Drivetrain:
Differential, driveshafts, CV joints, axles, wheel bearings.
Suspension:
Front and rear suspension components, shock absorbers, struts, control arms, bushings, alignment specifications.
Steering:
Power steering system, steering column, tie rods, steering rack diagnostics and repair.
Brakes:
Hydraulic brake system, ABS, DSC, EBD, brake calipers, rotors, pads, lines, bleeding procedures.
Electrical System:
Battery, alternator, starter, wiring diagrams, fuses, relays, lighting systems.
Body And Chassis:
Body panels, doors, hood, trunk, glass, interior trim, chassis components, corrosion protection.
HVAC:
Heating, ventilation, and air conditioning system, refrigerant handling, component replacement, diagnostics.
Comfort And Convenience:
Power windows, locks, mirrors, seats, sunroof, keyless entry, central locking.
Infotainment And Navigation:
iDrive system, radio, navigation, audio components, displays, connectivity modules.
Safety Systems:
Airbags, seatbelts, pre-tensioners, airbag control module diagnostics.
Routine Maintenance:
Oil changes, filter replacements, fluid checks and top-offs, spark plug replacement, tire rotation.
Diagnostic Troubleshooting:
Step-by-step diagnostic procedures for common and uncommon issues, fault code interpretation.
Component Replacement:
Detailed instructions for replacing major and minor components across all systems.
Rebuilding Procedures:
Complete rebuild procedures for engine and transmission components.
Electrical Diagnostics:
Use of multimeters, oscilloscopes, and diagnostic tools; wiring harness repair; module programming.
Alignment And Balancing:
Wheel alignment procedures and specifications, tire balancing.
Airbag System Service:
Safe handling procedures for airbag components and SRS system diagnostics.
Depth Level:
Comprehensive (from basic maintenance to full rebuilds and advanced diagnostics).
Diagnostic Tools:
Information on utilizing BMW-specific diagnostic tools (e.g., ISTA/D) and general automotive scan tools.
Torque Specifications:
Precise torque values for all critical fasteners.
Clearances And Tolerances:
Specifications for engine and transmission component clearances.
Wiring Diagrams:
Detailed electrical schematics for all vehicle systems.
Length:
Sedan: 178.2 in, Coupe: 178.2 in, Convertible: 178.2 in, Wagon: 179.7 in
Width:
Sedan/Coupe/Convertible: 70.2 in, Wagon: 70.2 in
Height:
Sedan: 56.1 in, Coupe: 54.1 in, Convertible: 55.2 in, Wagon: 57.1 in
Wheelbase:
Sedan/Coupe/Convertible: 108.7 in, Wagon: 110.6 in
Curb Weight:
Approx. 3500-3800 lbs (varies by body style and equipment)
Gross Vehicle Weight Rating:
Varies by model, typically around 4600-4900 lbs
Oil Change Interval:
Condition-based service (CBS) system, typically around 10,000-15,000 miles or annually, depending on driving conditions. Manual provides precise guidance.
Air Filter Replacement:
Recommended every 30,000-50,000 miles or as indicated by CBS.
Cabin Air Filter Replacement:
Recommended annually or every 15,000-20,000 miles.
Spark Plug Replacement:
Typically around 60,000 miles for original plugs; manual specifies exact interval and part numbers.
Engine Oil:
SAE 0W-30 or 0W-40 synthetic oil meeting BMW LL-01 or LL-04 specifications. Oil capacity: 6.5 liters (6.9 US quarts).
Coolant:
BMW Blue Antifreeze/Coolant (G48 ethylene glycol-based) mixed 50/50 with distilled water. Capacity approx. 8.0 liters.
Brake Fluid:
DOT 4 High Performance brake fluid. Recommended replacement every 2 years.
Common Wear Items:
Water pump (electric), thermostat, VANOS solenoids, ignition coils, valve cover gasket leaks, oil pan gasket leaks.
Oil Consumption:
Some N52/N51 engines may exhibit moderate oil consumption, which is considered within acceptable limits by BMW under certain conditions. Manual details checks.
Pcv System:
Potential for clogged PCV (Positive Crankcase Ventilation) system leading to oil leaks or rough idle.