Powertrain:
Engine mechanical (M52TU inline-6), fuel system, ignition system, cooling system, exhaust system, engine management (DME).
Transmission:
Automatic (GM 5L40-E) and Manual (Getrag S5D 320Z), clutch, driveshafts, differential.
Chassis:
Suspension (front and rear), steering (hydraulic power steering), brakes (ABS, DSC, rotors, pads, lines), wheels and tires.
Electrical:
Complete wiring diagrams, starter, alternator, battery, lighting (headlights, taillights, interior), fuse box locations and descriptions, sensor diagnostics.
Body And Interior:
Body panels, doors, windows, sunroof, seats, airbags, HVAC system (climate control), dashboard, interior trim, sound system.
Comfort Systems:
HVAC, central locking, power windows, sunroof operation, seat adjustment mechanisms.
Maintenance:
Scheduled maintenance (oil changes, filter replacements, spark plugs, coolant), fluid checks and replacements, belt inspections, brake inspections.
Troubleshooting:
Diagnostic trouble codes (DTCs), symptom-based troubleshooting guides, common issues and their resolutions.
Repair And Rebuild:
Engine overhaul, transmission overhaul, brake caliper replacement, suspension component replacement, electrical component repair.
Diagnostics:
OBD-II system diagnostics, sensor testing, actuator testing, using diagnostic tools.
Specific Component Repair:
Detailed procedures for replacing engine components (e.g., alternator, starter, water pump, thermostats), transmission components, brake calipers, wheel bearings, and steering racks.
Troubleshooting Guides:
Includes detailed symptom-to-cause troubleshooting trees for a wide range of vehicle issues.
Depth:
Detailed step-by-step repair instructions, torque specifications, special tool requirements, wiring schematics, diagnostic procedures.
Diagnostic Flowcharts:
Includes flowcharts for diagnosing common drivability, electrical, and performance issues.
Wiring Diagrams:
Complete and detailed electrical wiring diagrams for all vehicle systems, including component locations and wire colors.
Oil Change Interval:
BMW Condition Based Service (CBS) system, typically 10,000-15,000 miles or 12-24 months, depending on driving conditions. Manual will specify precise intervals.
Coolant Change:
Recommended every 2-4 years or 30,000-60,000 miles. Manual will detail specific BMW coolant type and procedure.
Spark Plug Replacement:
Around 60,000-100,000 miles depending on plug type (standard vs. long-life). Manual will specify exact interval and spark plug part number (e.g., NGK BKR6EQUP).
Engine Oil Type:
BMW Longlife-01 (LL-01) approved synthetic oil, typically 5W-30 or 5W-40. Refer to manual for exact viscosity recommendation and capacity.
Transmission Fluid Auto:
Dexron III/VI or equivalent. Consult manual for specific BMW fluid P/N and capacity for the GM 5L40-E.
Transmission Fluid Manual:
GL-4 or GL-5 gear oil. Consult manual for specific BMW P/N and capacity for the Getrag S5D 320Z.
Coolant Type:
BMW Blue Antifreeze/Coolant (G48 or similar). Manual will specify BMW part number and mixture ratio.
Brake Fluid Type:
DOT 4 (BMW recommends their own branded fluid). Manual will provide P/N.
Power Steering Fluid:
Pentosin CHF 11S or equivalent. Manual will specify BMW P/N.
Cooling System:
Plastic coolant expansion tank can become brittle and crack; water pump impeller can degrade; thermostat housing leaks.
Suspension:
Front control arm bushings and ball joints wear out; rear shock mounts can fail; rear subframe bushings can crack.
Electrical:
ABS wheel speed sensors; VANOS (Variable Valve Timing) system can develop leaks or solenoids can fail; fuel pump failure; ignition coil failure.
Interior:
Pixelation on the instrument cluster display; HVAC blower motor resistor failure; dead pixels in the radio display.
