Engine Mechanical:
Detailed disassembly, assembly, diagnosis and repair of all engine components (pistons, rings, bearings, crankshaft, camshafts, cylinder head, block, timing system, etc.)
Engine Electrical:
Ignition system, fuel injection system (EFI), emissions control systems, starter motor, alternator, battery, wiring diagrams, sensor diagnostics.
Transmission Automatic:
Repair, overhaul, diagnosis and fluid specifications for GM 6L45 (for 3.0L) and GM 6L80 (for 4.8L) transmissions.
Transmission Manual:
N/A (E70 was primarily automatic)
Drivetrain:
xDrive all-wheel drive system, differentials, transfer case, driveshafts, CV joints, wheel bearings.
Suspension:
Front and rear suspension components, shock absorbers, springs, control arms, bushings, ball joints, power steering system, active steering (if equipped).
Brakes:
Hydraulic brake system, ABS (Anti-lock Braking System), DSC (Dynamic Stability Control), brake pads, rotors, calipers, brake lines, parking brake.
Steering:
Power steering system, steering rack, tie rods, steering column, steering wheel.
Body And Frame:
Body panel removal/installation, chassis, doors, hood, tailgate, bumpers, glass, seals, interior trim, sound deadening.
Electrical Systems:
Lighting system (headlights, taillights, interior), power windows, power locks, mirrors, sunroof, horn, battery charging system, fuses, relays, wiring diagrams for all modules.
Climate Control:
HVAC system (heater, ventilation, air conditioning), refrigerant system, blower motor, climate control modules, sensors.
Safety Systems:
Airbag system (SRS), seat belts, pre-tensioners, occupant sensors, collision detection sensors.
Infotainment:
iDrive system (CIC/CCC), radio, navigation, audio system, Bluetooth connectivity, auxiliary inputs, diagnostic procedures for infotainment modules.
Maintenance:
Oil changes, filter replacements, spark plug changes, coolant flushes, brake fluid changes, belt inspections/replacements, scheduled maintenance intervals.
Diagnostics:
Troubleshooting guides, diagnostic trouble codes (DTCs), using diagnostic tools (e.g., ISTA/D), symptom-based diagnostics.
Repair:
Step-by-step instructions for component replacement, sub-assembly repair, and full system overhauls.
Troubleshooting:
Detailed flowcharts and explanations for identifying and resolving common and uncommon vehicle issues.
Specifications:
Torque specifications for all fasteners, fluid capacities, component tolerances, alignment specifications, electrical resistance values.
Wiring Diagrams:
Comprehensive, color-coded wiring diagrams for all electrical systems.
Rebuilds:
Complete rebuild procedures for engines, transmissions, and other major components.
Depth:
Comprehensive from basic maintenance to complete engine and transmission overhauls. Includes diagnostic procedures and detailed schematics.
Infotainment System:
BMW iDrive system (likely CCC or early CIC depending on options).
Display:
Central dashboard display for infotainment, navigation, and vehicle settings.
Audio System:
Standard HiFi audio system, optional Logic 7 premium audio system.
Connectivity:
Bluetooth hands-free connectivity, USB audio interface, auxiliary audio input.
Cruise Control:
Standard cruise control, optional Active Cruise Control (ACC).
Parking Sensors:
Standard Park Distance Control (PDC) front and rear.
Camera Options:
Optional rearview camera, optional side-view cameras.
Lighting Features:
Bi-Xenon headlights with adaptive cornering lights, automatic headlights.
Telematics:
BMW Assist with Bluetooth connectivity.
Oil Change Interval:
Condition-based service (CBS) system, typically around 10,000-15,000 miles or 12 months, depending on driving conditions.
Air Filter Replacement:
Typically every 30,000-45,000 miles or as indicated by CBS.
Cabin Filter Replacement:
Typically every 15,000-20,000 miles or annually.
Spark Plug Replacement N52:
NGK SILZKR7B11, typically around 60,000 miles.
Spark Plug Replacement N62:
Bosch FGR7DQP+, typically around 60,000 miles.
Brake Fluid Flush:
Every 2 years, regardless of mileage.
Coolant Flush:
BMW Blue Coolant (G48), typically at 100,000 miles or 5 years, then every 2 years or 50,000 miles.
Engine Oil Type N52:
BMW Longlife-01 (LL-01) SAE 0W-30 or 5W-30 synthetic oil.
Engine Oil Capacity N52:
6.5 quarts (6.2 liters) with filter.
Engine Oil Type N62:
BMW Longlife-01 (LL-01) SAE 0W-40 or 5W-40 synthetic oil.
Engine Oil Capacity N62:
8.0 quarts (7.6 liters) with filter.
Transmission Fluid Type 6L45:
Dexron VI (GM P/N 88861017 or equivalent).
Transmission Fluid Type 6L80:
Dexron VI (GM P/N 88861017 or equivalent).
Transfer Case Fluid:
BMW DTF-1 (P/N 83 22 0 397 244).
Differential Fluid Front:
BMW Hypoid Gear Oil (SAF-XJ) or equivalent SAE 75W-140.
Differential Fluid Rear:
BMW Hypoid Gear Oil (SAF-XJ) or equivalent SAE 75W-140.
Common Problem Valve Cover Gaskets:
Oil leaks from valve cover gaskets due to aging/degradation, common on N62 engine.
Common Problem Ccv System:
Crankcase Ventilation (CCV) system issues, leading to oil consumption or rough idle, particularly on N52 and N62 engines.
Common Problem Water Pump:
Failure of the electric water pump and thermostat assembly, especially on N52 engines, can lead to overheating.
Common Problem Air Suspension:
Leaking air springs or compressor failure in vehicles equipped with the optional self-leveling air suspension.
Common Problem Transfer Case Actuator:
Failure of the xDrive transfer case actuator motor, resulting in AWD system malfunction warning.
Common Problem Oil Pan Gasket:
Oil leaks from the oil pan gasket, common on both engines.
Common Problem Power Steering Pump:
Leaking or failing power steering pump or steering rack.