Engine Mechanical:
Engine assembly, cylinder head, block, pistons, crankshaft, camshafts, valve train, timing, cooling system, lubrication system, intake manifold, exhaust system
Engine Management:
Fuel injection, ignition system, emissions control, engine control unit (ECU/DME), sensors (MAF, O2, crankshaft position, camshaft position), electronic throttle control
Transmission Manual:
Clutch, gearbox overhaul, internal components, shift mechanism
Transmission Automatic:
Automatic transmission (e.g., GM 5L475-E) overhaul, valve body, torque converter, electronic control, fluid and filter replacement
Drivetrain:
Driveshafts, universal joints, differential, axles, wheel bearings
Suspension:
Front suspension (McPherson struts, control arms, anti-roll bar), rear suspension (multi-link), springs, shock absorbers, bushings, alignment specifications
Steering:
Power steering system, steering rack, steering column, electronic power steering (EPS) if applicable
Brakes:
Front and rear brake systems (discs, calipers, pads), hydraulic system, ABS (Anti-lock Braking System), DSC (Dynamic Stability Control), brake fluid specifications and bleeding procedures
Electrical System:
Battery, charging system (alternator), starter motor, lighting systems (headlights, taillights, interior), power windows, door locks, mirrors, wipers, horns
Body And Interior:
Body panels, doors, hood, trunk, bumpers, seats, dashboard, trim panels, HVAC system (heating, ventilation, air conditioning), climate control
Safety Systems:
Airbag system (SRS), seat belt pre-tensioners, occupant restraints
Diagnostics And Troubleshooting:
Diagnostic trouble codes (DTCs), fault finding procedures, use of BMW diagnostic tools (e.g., ISTA/D)
Wiring Diagrams:
Complete electrical wiring schematics for all systems
Routine Maintenance:
Oil change, filter replacement (oil, air, cabin), spark plug replacement, fluid checks and top-offs
Component Replacement:
Detailed instructions for replacing engine components, transmission, brakes, suspension parts, electrical modules, body panels, etc.
Overhaul Procedures:
Comprehensive guides for engine and transmission rebuilds
Diagnostic Procedures:
Step-by-step guides for diagnosing common and complex issues using tools and symptom analysis
Calibration And Adjustment:
Procedures for calibrating sensors, alignment adjustments, idle speed settings
Programming And Coding:
Information on module programming and coding for control units (often requiring specialized tools)
Depth:
Comprehensive, suitable for professional technicians and experienced DIY enthusiasts. Covers everything from basic maintenance to complex diagnostics and complete rebuilds.
Transmission Type:
6-speed Manual (SMG optional on some models/markets)
Transmission Type:
5-speed Automatic (GM 5L475-E)
Manual Transmission Features:
Close-ratio gearbox, hydraulic clutch actuation
Automatic Transmission Features:
Steptronic function (manual shifting mode), adaptive shift programs
Automatic Transmission Fluid:
Dexron VI (or specified BMW equivalent)
Manual Transmission Fluid:
BMW MTF-LT-2 (or equivalent GL-4 specification)
System Name:
iDrive Infotainment System
Features:
Central display screen, control knob/joystick, radio, CD player, optional navigation, climate control integration, communication features.
Parking Sensors:
Front and Rear Park Distance Control (PDC)
Cruise Control:
Standard cruise control, optional Active Cruise Control (ACC) with adaptive functionality on some models.
Bluetooth:
Optional Bluetooth connectivity for phone calls, often requiring a cradle or adapter.
Auxiliary Input:
Optional auxiliary audio input jack.
Oil Change Interval:
Variable Service Interval (VSI) system, typically recommending every 10,000-15,000 miles or annually, based on driving conditions. Consult manual for specific indicator.
Spark Plug Replacement:
Approximately 60,000 miles (refer to manual for specific M54B30 recommendations, often with specific spark plug types)
Brake Fluid Flush:
Every 2 years, regardless of mileage.
Coolant Replacement:
Initial fill for life, or replacement every 3-4 years or as indicated by condition.
Power Steering Fluid:
BMW CHF 11S (or specified Pentosin)
Brake Fluid Type:
DOT 4 (BMW High Performance Brake Fluid)
Valve Cover Gasket Leaks:
Common due to aging plastic or rubber gaskets, leading to oil leaks and potential oil burning.
Cooling System Components:
Plastic coolant expansion tank, water pump, and thermostat housing can become brittle and crack, leading to leaks.
Oil Pan Gasket Leaks:
Another common source of oil leaks, particularly on higher mileage vehicles.
ABS Wheel Speed Sensors:
Can fail, leading to ABS and DSC warning lights.
Crankshaft Position Sensor:
Failure can cause erratic running or no-start conditions.
Ignition Coils And Spark Plugs:
Can lead to misfires and rough running, especially as they age.
Power Steering Hoses:
Can develop leaks over time.
Transmission Mechatronic Unit:
Can develop electrical issues in automatic transmissions, affecting shifting performance.