Engine Systems:
Engine mechanical (M52TU, M54 series), fuel injection, ignition, cooling, lubrication, exhaust, emissions control, engine management (DME).
Drivetrain Systems:
Manual transmission (Getrag GS5-39DZ, GS6-37BZ), Automatic transmission (Steptronic GM A5S360R, A5S320R), clutch, driveshafts, differential, rear axle.
Chassis Systems:
Suspension (front McPherson strut, rear multi-link), steering (rack and pinion, hydraulic power assist), brakes (ABS, DSC, vented discs, calipers), wheel bearings.
Electrical Systems:
Vehicle electrical system (12V), battery, alternator, starter, lighting, power windows, central locking, fuse boxes, relays, wiring diagrams, diagnostic connectors (OBD-II).
Body And Interior:
Body shell repair, exterior trim, interior trim, seats, airbags, climate control (HVAC), body control module (BCM).
Body And Frame:
Structural repair information, body panel replacement, corrosion protection measures, panel gaps, door/hood/trunk alignment.
Climate Control And HVAC:
Refrigerant handling, system diagnostics, blower motor replacement, heater core service, climate control module troubleshooting.
Maintenance:
Scheduled maintenance, oil changes, filter replacements, spark plug replacement, fluid checks and changes, brake pad/rotor replacement.
Repair And Rebuild:
Engine overhaul, transmission overhaul, suspension component replacement, brake caliper rebuild, exhaust system repair, cooling system flush and repair.
Diagnostics And Troubleshooting:
Fault code diagnosis, electrical troubleshooting, mechanical diagnostics, drivability issues, common problem diagnosis.
Technical Specifications:
Torque specifications, diagnostic trouble codes (DTCs), electrical values, fluid capacities, component tolerances.
Wiring Diagrams:
Extensive electrical wiring diagrams covering all vehicle systems, with component locations and wire tracing information.
Depth:
Comprehensive: Covers everything from routine maintenance to major component overhauls and advanced diagnostics.
Diagnostics Capabilities:
Detailed diagnostic procedures for engine, transmission, ABS, DSC, SRS (airbag), climate control, and body electrical systems using BMW's diagnostic tools and protocols.
Passive Features Detail:
Detailed information on airbag system components, deployment triggers, sensor locations, and SRS system servicing procedures.
Engine Options:
2.5L Inline-6 (M54B25), 3.0L Inline-6 (M54B30), 2.8L Inline-6 (M52TUB28 - earlier models).
Horsepower Range:
Approx. 184 hp (2.5L) to 228 hp (3.0L), depending on specific engine and market.
Torque Range:
Approx. 230 Nm (2.5L) to 300 Nm (3.0L), depending on specific engine.
Injection Type:
Sequential Multi-Point Fuel Injection (SFI)
Fuel Type:
Premium Unleaded Gasoline (91 AKI or higher recommended)
ECU Type:
Bosch Motronic DME (Digital Motor Electronics)
Diagnostic Interface:
OBD-II (On-Board Diagnostics II) compliant, typically using a 16-pin connector located under the dashboard.
Oil Change Interval:
Typically every 7,500 - 10,000 miles or annually, depending on driving conditions and oil used. BMW's Condition Based Service (CBS) system may dictate intervals.
Spark Plug Replacement:
Around 60,000 miles for standard spark plugs; consult manual for specific engine.
Coolant Flush:
Every 2-3 years or 30,000-50,000 miles with BMW blue coolant.
Brake Fluid Change Interval:
Every 2 years regardless of mileage.
Engine Oil:
SAE 5W-30 or 0W-40 synthetic, meeting BMW Longlife-01 (LL-01) specification. Consult manual for specific engine variant.
Transmission Fluid Manual:
GL-4 or GL-5 gear oil, e.g., Castrol SAF-XJ or equivalent.
Transmission Fluid Automatic:
BMW ATF LT-3 (or equivalent approved ATF, e.g., Pentosin ATF1).
Coolant:
BMW Blue Antifreeze/Coolant (G48 type), mixed 50/50 with distilled water.
Brake Fluid:
DOT 4 (BMW Premium Brake Fluid) or DOT 4 LV.
Common Failures:
VANOS (Variable Valve Timing) solenoid leaks/failures, oil filter housing gasket leaks, CCV (Crankcase Ventilation) system clogging, coolant expansion tank cracking, ABS/DSC sensor failures, window regulator failures, cooling system components (water pump, thermostat, hoses).
Oil Filter Part Number Example:
Mann-Filter HU 821 X, Mahle OX 157/1D, or OEM 11 42 1 469 277.
Air Filter Part Number Example:
Mann-Filter C 30 100, or OEM 13 72 1 432 001.