Engine Management:
Detailed coverage of DME (Digital Motor Electronics) system, sensors, actuators, ignition system, fuel injection, and emissions control.
Cooling System:
Radiator, water pump, thermostat, coolant hoses, expansion tank, and cooling fan operation.
Exhaust System:
Exhaust manifolds, catalytic converter, mufflers, exhaust pipes, and oxygen sensors.
Fuel System:
Fuel tank, fuel pump, fuel filter, fuel lines, fuel injectors, and fuel pressure regulator.
Transmission Manual:
Clutch, gear selection mechanism, internal components, and maintenance procedures for the Getrag S5D 250G 5-speed manual transmission.
Transmission Automatic:
Operation of the ZF 5HP18 5-speed automatic transmission, hydraulic control, torque converter, and electronic control unit (EGS).
Drivetrain Rear Axle:
Differential, driveshafts, CV joints, and rear axle assembly.
Suspension Front:
MacPherson struts, control arms, ball joints, sway bar, and wheel bearings.
Suspension Rear:
Multi-link rear suspension, trailing arms, shock absorbers, springs, and wheel bearings.
Brakes Hydraulic:
Brake master cylinder, brake lines, brake fluid, ABS (Anti-lock Braking System) components, and brake booster.
Brakes Friction:
Front and rear brake calipers, brake pads, brake rotors, and parking brake system.
Steering System:
Power steering pump, steering rack, tie rods, and steering column.
Body Electrical:
Lighting system (headlights, taillights, interior lights), power windows, power locks, mirrors, and central locking system.
Instrument Cluster:
Speedometer, tachometer, fuel gauge, temperature gauge, warning lights, and onboard computer (OBC) functions.
Audio System:
Factory radio, speakers, antenna, and wiring.
HVAC System:
Air conditioning compressor, condenser, evaporator, blower motor, climate controls, and refrigerant system.
Chassis Electrical:
Alternator, starter motor, battery, fuses, relays, and wiring harnesses.
Maintenance Tasks:
Oil changes, filter replacements, fluid checks and flushes, spark plug replacement, belt inspection and replacement, brake fluid flush, coolant flush, and general inspection procedures.
Engine Repair:
Engine removal and installation, cylinder head removal and installation, piston and connecting rod service, crankshaft and bearing replacement, camshaft and timing chain service, and valve train adjustments.
Transmission Repair:
Transmission fluid and filter changes (automatic), clutch replacement (manual), torque converter replacement, transmission overhaul and rebuilding procedures for both manual and automatic transmissions.
Suspension And Steering Repair:
Shock absorber and strut replacement, control arm bushing replacement, ball joint and tie rod end replacement, power steering pump and rack replacement, and wheel alignment specifications.
Brake System Repair:
Brake pad and rotor replacement, brake caliper service, brake line replacement, master cylinder replacement, ABS system diagnostics and repair, and bleeding procedures.
Electrical Diagnostics:
Troubleshooting wiring diagrams, component testing using multimeters and oscilloscopes, diagnosing sensor faults, ABS warning light diagnosis, and DME fault code interpretation.
Body And Interior Repair:
Door panel removal, seat removal, dashboard disassembly, body panel repair and replacement, and trim piece installation.
HVAC Service:
Refrigerant charging, leak detection, compressor replacement, evaporator and condenser service, and blower motor replacement.
Troubleshooting Guides:
Step-by-step diagnostic procedures for common drivability issues, starting problems, charging system faults, and HVAC malfunctions.
Depth:
Comprehensive, covering everything from basic preventative maintenance and fluid changes to complete engine, transmission, and chassis overhauls. Includes detailed diagnostic procedures and specifications for professional technicians.
Oil Change:
Every 7,500 to 10,000 miles (or as indicated by the Condition Based Service (CBS) system, typically using synthetic oil).
Air Filter Replacement:
Every 15,000 to 30,000 miles or as needed based on driving conditions.
Spark Plug Replacement:
Every 60,000 miles for standard plugs, or 100,000 miles for long-life plugs (check specific plug type).
Coolant Flush:
Every 30,000 to 60,000 miles or every 2-4 years.
Brake Fluid Flush:
Every 2 years regardless of mileage.
Engine Oil Spec:
API SG/SH or ACEA A2/A3, SAE 5W-30 or 5W-40 Synthetic
Coolant Spec:
BMW Blue Antifreeze/Coolant (G48 ethylene glycol based) mixed 50/50 with distilled water.
Cooling System Failure:
Plastic cooling system components (expansion tank, thermostat housing, water pump impeller) are prone to cracking or failure over time, leading to leaks and overheating. Regular inspection and proactive replacement are recommended.
Oil Pan Gasket Leaks:
Oil pan gasket and valve cover gasket can degrade and leak oil due to age and heat. These are common maintenance items.
Subframe Mounts:
Rear subframe mounting points can crack or fatigue on the chassis, leading to clunking noises and compromised handling. This is a known structural issue requiring specialized repair.
ABS Sensor Failure:
ABS wheel speed sensors can fail due to age, heat, or corrosion, leading to ABS and traction control warning lights.
Heater Core Leaks:
Heater core located behind the dashboard can develop leaks, resulting in a sweet smell inside the cabin and coolant loss.