Engine Mechanical:
Engine assembly, cylinder head, block, pistons, crankshaft, camshafts, timing, lubrication, cooling system
Engine Management:
Fuel injection, ignition system, emission control, sensors, actuators, DME (Digital Motor Electronics)
Transmission Automatic:
ZF 6HP19 (GA6HP19Z), torque converter, valve body, mechatronics, cooling
Transmission Manual:
Getrag GS6-37BZ, clutch, flywheel, shift mechanism
Drivetrain:
Driveshafts, differential, axle shafts, universal joints
Suspension:
Front suspension (MacPherson strut, control arms), rear suspension (multi-link), springs, shock absorbers, bushings
Brakes:
Front brakes (vented discs), rear brakes (discs), ABS (Anti-lock Braking System), DSC (Dynamic Stability Control), brake fluid, hydraulic system, parking brake
Steering:
Power steering system (hydraulic), steering column, steering rack, tie rods
Electrical System:
Battery, alternator, starter, wiring diagrams, fuses, relays, charging system
Body And Chassis:
Frame construction, chassis components, body panels, doors, hoods, trunk, bumpers, glass, seals
HVAC:
Heating, ventilation, air conditioning system, refrigerant, compressor, evaporator, condenser, climate control unit
Interior Trim:
Dashboard, seats, door panels, headliner, carpet, trim pieces
Lighting:
Headlights, taillights, interior lights, fog lights, signal lights
Infotainment And Navigation:
iDrive system, audio system, navigation unit (CCC/CIC), antenna systems, speakers
Safety Systems:
Airbags, seat belts, pretensioners, SRS (Supplemental Restraint System) module
Maintenance Procedures:
Oil changes, filter replacements, fluid checks and changes, spark plug replacement, brake pad replacement, belt replacement
Repair Procedures:
Component removal and installation, engine rebuilds, transmission overhauls, suspension component replacement, electrical system diagnostics and repair
Troubleshooting:
Diagnostic fault codes (DTCs), symptom-based troubleshooting, electrical system testing, mechanical component diagnosis
Technical Specifications:
Torque specifications, fluid capacities, clearances, pressures, electrical resistance values
Diagnostic Procedures:
Use of diagnostic tools (e.g., ISTA/D), data stream analysis, actuator testing, sensor signal interpretation
Wheel Alignment:
Specifications and adjustment procedures
Air Conditioning Service:
Refrigerant handling, system evacuation and charging, leak detection
Body Repair:
Panel replacement, dent repair, rust repair, welding procedures
Electrical Troubleshooting:
Fuse identification and testing, relay testing, circuit tracing using wiring diagrams
Depth:
Comprehensive: Covers basic maintenance to complete engine and transmission rebuilds, in-depth diagnostics, and electrical system troubleshooting.
Oil Change Interval:
Condition Based Service (CBS) system; typically 10,000-15,000 miles or annually. Consult the CBS display or manual.
Air Filter Replacement:
Inspect every 30,000 miles, replace as needed or per CBS.
Cabin Filter Replacement:
Inspect every 15,000 miles, replace as needed or per CBS.
Spark Plug Replacement:
Approximately every 60,000 miles (for original plugs; consult manual for exact spec).
Brake Fluid Flush:
Every 2 years, regardless of mileage.
Engine Oil Type:
SAE 5W-30 Synthetic Engine Oil meeting BMW LL-01 specification.
Engine Oil Capacity:
6.5 US quarts (6.2 Liters) with filter change.
Coolant Type:
BMW Blue Antifreeze/Coolant (G48 type) or equivalent.
Coolant Capacity:
Approx. 7.5 US quarts (7.1 Liters).
Power Steering Fluid:
BMW Power Steering Fluid (P/N 81 22 9 407 763) or Pentosin CHF 11S.
Common Problems:
PCV (Positive Crankcase Ventilation) valve failure (leading to oil leaks/smoke), eccentric shaft sensor failure, ignition coil failure, water pump failure, oil pan gasket leaks, valve cover gasket leaks, VANOS solenoid issues, rear main seal leaks, starter motor issues.
Sustainability Concern:
Early models with the N52 engine can be prone to oil consumption issues if not properly maintained. SULEV models (N51) may have additional complexity related to their emissions control systems.
Manufacturer Focus:
BMW is renowned for its 'Ultimate Driving Machine' ethos, emphasizing performance, handling, and driver engagement.
Generation Designation:
E90 series, succeeding the E46 generation.
Introduction Era:
Introduced for the 2006 model year, representing a significant design and engineering update over its predecessor.
Facelift:
A mid-cycle LCI (Life Cycle Impulse) update occurred for the 2009 model year, featuring revised styling (headlights, taillights, bumpers), interior enhancements, and updated technology.
Manufacturing Locations:
Primarily manufactured in Germany (e.g., Dingolfing, Munich) and also in Leipzig, Germany, with potential assembly in other international locations.