Engine Systems:
Engine mechanical, lubrication, cooling, fuel injection, ignition, exhaust, engine management (DME/ECU)
Transmission Systems:
Manual and Automatic transmission repair, diagnostics, fluid service, shift control
Drivetrain Systems:
Driveshaft, differential, axles, wheel bearings
Suspension Systems:
Front and rear suspension, shock absorbers, springs, control arms, bushings, steering knuckle
Braking Systems:
Brake hydraulics, calipers, pads, rotors, ABS (Anti-lock Braking System), DSC (Dynamic Stability Control)
Steering Systems:
Power steering system, steering rack, tie rods, steering column
Electrical Systems:
Battery, charging system, starter, lighting, power windows, locks, mirrors, wipers, horn, instrument cluster, wiring diagrams
Body Systems:
Body panels, doors, hood, trunk, bumpers, interior trim, glass, convertible top (if applicable), rust prevention and repair
HVAC Systems:
Heating, Ventilation, and Air Conditioning (HVAC) system, climate control, refrigerant service, blower motor, evaporator, condenser
Safety Systems:
Airbag system, seat belts, SRS (Supplemental Restraint System) diagnostics
Comfort Controls:
Seats, mirrors, windows, sunroof, central locking
General Maintenance:
Oil changes, filter replacements, fluid checks and top-offs, spark plug replacement, belt inspection and replacement
Engine Repairs:
Head gasket replacement, piston and ring overhaul, valve stem seals, timing chain/belt service (where applicable), cylinder head removal and installation
Transmission Repairs:
Clutch replacement (manual), torque converter service (automatic), valve body repair, transmission overhaul
Brake Service:
Brake pad and rotor replacement, brake caliper service, brake fluid bleeding, ABS/DSC sensor replacement
Suspension And Steering Repairs:
Control arm bushing replacement, ball joint replacement, tie rod end replacement, power steering pump and rack service
Electrical Diagnostics:
Troubleshooting electrical faults, component testing, wiring harness repair, ECU (Engine Control Unit) diagnostics
HVAC Service:
Refrigerant recharging, leak detection, compressor replacement, heater core replacement, cabin air filter replacement
Body And Interior Repairs:
Door panel removal, window regulator replacement, seat removal, bumper repair, trim piece installation
Troubleshooting Guides:
Diagnostic flowcharts for common problems, symptom-based troubleshooting
Diagnostic Procedures:
OBD-II (On-Board Diagnostics) code reading and interpretation, component-specific testing procedures
Technical Depth:
Comprehensive, covering everything from routine maintenance to major component overhauls and diagnostics
Diagnostic Capabilities:
Detailed diagnostic strategies, fault code explanations, and component testing procedures
Repair Procedures:
Step-by-step instructions with torque specifications, special tool requirements, and cautionary notes
Specifications Data:
Includes all necessary technical data, torque values, fluid capacities, and diagnostic parameters
Oil Change Interval:
Typically every 7,500 - 15,000 miles (12,000 - 24,000 km) or annually, depending on driving conditions and oil type (e.g., BMW Longlife-01)
Spark Plug Replacement:
Every 60,000 miles (100,000 km) for standard plugs; 100,000 miles (160,000 km) for long-life iridium plugs (varies by engine)
Coolant Flush:
Every 2-4 years or 30,000-60,000 miles (48,000-96,000 km)
Engine Oil Specification:
BMW Longlife-01 (LL-01) approved oils are recommended (e.g., SAE 0W-30, 5W-30, 5W-40 depending on climate and engine)
Coolant Specification:
BMW Blue Coolant (G48 ethylene glycol based) mixed 50/50 with distilled water
Brake Fluid Specification:
DOT 4 (or DOT 4 PLUS for improved performance)
Transmission Fluid Automatic:
Specific to transmission type; e.g., for ZF 5HP series, Esso LT 71141 or equivalent is often specified.
Transmission Fluid Manual:
GL-4 or GL-5 gear oil, specific viscosity (e.g., 75W-90) as per manual.
Common Issues:
Cooling system failures (plastic components: water pump, thermostat housing, expansion tank), VANOS (Variable Valve Timing) system issues, oil leaks (valve cover gasket, oil pan gasket), ABS/ASC sensor failures, ignition coil failures, door seal deterioration, sunroof drain clogs.
Cooling System Maintenance:
Proactive replacement of plastic cooling system components is often recommended around 80,000-100,000 miles.
Vanos Maintenance:
Seal replacement for VANOS units can restore lost low-end torque and improve engine smoothness.