Engine Mechanical:
Engine assembly, cylinder head, crankshaft, pistons, connecting rods, lubrication system, cooling system, fuel delivery, intake manifold, exhaust system.
Engine Electrical:
Ignition system, fuel injection system (DME - Digital Motor Electronics), starter system, charging system, sensors and actuators, ECU diagnostics.
Transmission Manual:
Getrag 420G 6-speed manual transmission: clutch system, gearbox internal components, shifter mechanism, fluid specifications, repair procedures.
Transmission Automatic:
Optional SMG (Sequential Manual Gearbox): hydraulic system, control unit, clutch actuation, repair and calibration.
Drivetrain:
Driveshafts, differential, rear axle assembly, wheel bearings, universal joints, CV joints, torque specifications.
Suspension:
Front and rear suspension systems (MacPherson strut front, multi-link rear), springs, shock absorbers, control arms, bushings, anti-roll bars, alignment specifications.
Steering:
Power steering system (rack and pinion), steering column, steering wheel, tie rods, hydraulic pump, fluid types, troubleshooting.
Brakes:
Front and rear disc brakes, ABS (Anti-lock Braking System), DSC (Dynamic Stability Control), brake calipers, rotors, pads, master cylinder, brake lines, bleeding procedures, fluid specifications.
Electrical System Body:
Lighting system (headlights, taillights, interior), power windows, central locking, mirrors, wipers, horns, battery, fuse box diagrams, wiring schematics.
Climate Control:
HVAC system, air conditioning compressor, refrigerant types, blower motor, heater core, climate control unit, diagnostic procedures.
Body And Interior:
Body panels, doors, hood, trunk, bumpers, interior trim, seats, airbags, safety restraint systems, removal and installation procedures.
Diagnostic Troubleshooting:
Common fault codes, diagnostic procedures, symptom-based troubleshooting guides, use of diagnostic tools (e.g., GT1/DIS).
Scheduled Maintenance:
Oil changes, filter replacements, spark plug replacement, coolant flushes, brake fluid changes, transmission fluid changes, differential fluid changes, inspection points.
Repair Procedures:
Step-by-step instructions for component removal, installation, and overhaul of all major systems.
Troubleshooting Guides:
Detailed diagnostic trees and flowcharts for identifying and resolving common and uncommon vehicle issues.
Electrical Diagnostics:
Wiring diagrams, component testing, continuity checks, voltage measurements, troubleshooting electrical circuits.
Engine Rebuilding:
Specifications for engine disassembly, cleaning, inspection, and reassembly, including torque values and clearances.
Suspension Alignment:
Detailed specifications for camber, caster, and toe angles, with procedures for adjustment.
Depth Level:
Comprehensive: Covers basic maintenance to complete engine and transmission overhauls.
Diagnostics Scope:
Advanced: Includes detailed diagnostic trouble codes (DTCs), sensor data interpretation, and module programming information (where applicable).
Specifications Detail:
Extremely detailed: Includes torque specifications, clearances, fluid capacities, pressure readings, and electrical resistance values.
Oil Change Interval:
BMW Condition Based Service (CBS) system dictates interval, typically every 10,000-15,000 miles or 12-24 months.
Spark Plug Replacement:
Typically every 60,000 miles.
Coolant Flush:
Every 2-4 years or as indicated by CBS.
Brake Fluid Flush:
Every 2 years.
Engine Oil Specification:
BMW Longlife-01 (LL-01) approved synthetic oil, typically 5W-30 or 0W-40.
Engine Oil Capacity:
6.5 Liters (6.9 US Quarts)
Coolant Type:
BMW Blue (G48) Antifreeze/Coolant, or equivalent G48 based coolant.
Brake Fluid Type:
DOT 4 High Performance Brake Fluid.
Power Steering Fluid:
BMW Power Steering Fluid (or Pentosin CHF 11S).
Rod Bearings:
A known potential issue with the S54 engine is premature wear of the rod bearings, especially under hard driving without proper warm-up. The manual details inspection procedures.
Subframe Reinforcement:
The rear subframe mounting points can fatigue over time. The manual may contain information on inspection and reinforcement procedures.
Vanos System:
VANOS (Variable Valve Timing) system can develop issues, such as solenoid failure or oil leaks. The manual provides diagnostic steps.
Oil Sludge:
Improper warm-up and short trips can lead to oil sludge buildup. Regular oil changes are crucial.