Engine:
M54B30 (3.0L Inline-6), including diagnosis, repair, and overhaul
Transmission:
5-speed Manual (S5D 250G) and 5-speed Automatic (GM A5S360R/A5S390R) diagnostics and repair
Drivetrain:
Rear-wheel drive system, differential, driveshafts, and CV joints
Suspension:
Front and rear suspension components, including struts, shocks, control arms, bushings, and alignment procedures
Brakes:
Front and rear disc brakes, ABS system (ABS/ASC/DSC), brake fluid flush, component replacement, and bleeding procedures
Steering:
Power steering system, steering rack, and associated components
Electrical System:
Complete electrical schematics, component testing, fuse box layouts, lighting, starter, alternator, and battery systems
Climate Control:
HVAC system, blower motor, evaporator, condenser, refrigerant recharging, and troubleshooting
Body:
Body panels, doors, windows, locks, interior trim, exterior trim, and body repair procedures
Fuel System:
Fuel pump, injectors, fuel filter, fuel tank, and evaporative emissions system (EVAP)
Cooling System:
Radiator, water pump, thermostat, coolant hoses, and coolant type specifications
Exhaust System:
Exhaust manifolds, catalytic converter, mufflers, and emissions control components
Safety Systems:
Airbag system diagnostics and replacement, seatbelt mechanisms
Infotainment:
Radio, CD player, and speaker system diagnostics and repair
Routine Maintenance:
Oil and filter changes, air filter replacement, cabin filter replacement, spark plug replacement, and fluid level checks
Engine Repair:
Engine tune-ups, valve cover gasket replacement, head gasket replacement, timing chain inspection and replacement (if applicable), piston and ring replacement, crankshaft and bearing replacement
Transmission Repair:
Clutch replacement (manual), torque converter replacement (automatic), transmission fluid and filter changes, internal transmission component repair
Brake System Repair:
Brake pad and rotor replacement, brake caliper service, brake line replacement, ABS sensor replacement, and bleeding procedures
Suspension Component Replacement:
Shock absorber and strut replacement, control arm bushing replacement, ball joint replacement, and tie rod end replacement
Electrical Diagnostics:
Troubleshooting electrical faults using wiring diagrams, component testing, and OBD-II scanner usage
Body And Interior Repair:
Door handle repair, window regulator replacement, mirror replacement, bumper repair, and trim panel removal/installation
Troubleshooting Guides:
Step-by-step diagnostic procedures for common and complex issues, including starting problems, running rough, and electrical gremlins
Torque Specifications:
Detailed torque values for all critical fasteners during assembly and disassembly
Depth:
Comprehensive, covering everything from basic scheduled maintenance to complete engine and transmission rebuilds, including detailed diagnostic procedures and electrical schematics.
Oil Change Interval:
Typically every 7,500-10,000 miles or annually, depending on driving conditions and BMW's Condition Based Service (CBS) system if equipped.
Engine Air Filter:
Inspect every ~15,000 miles, replace as needed or every ~30,000 miles.
Cabin Air Filter:
Replace annually or every 15,000 miles.
Spark Plugs:
Replace around 100,000 miles (using high-quality iridium spark plugs).
Coolant Flush:
Replace coolant every 2-4 years or 30,000-60,000 miles.
Engine Oil Type:
BMW Longlife-01 (LL-01) approved synthetic oil, SAE 5W-30 or 0W-30 recommended.
Engine Oil Capacity:
6.5 US quarts (6.2 Liters) with filter change
Coolant Type:
BMW Blue/Green coolant concentrate mixed 50/50 with distilled water
Power Steering Fluid:
BMW Power Steering Fluid or CHF 11S
Transmission Fluid Manual:
MTF LT-2 (BMW specific manual transmission fluid)
Transmission Fluid Automatic:
Dexron III or equivalent ATF
Known Issues:
Oil filter housing gasket leaks, VANOS (Variable Valve Timing) solenoid and sealing ring issues, cooling system component failures (water pump, thermostat, expansion tank), ignition coil failures, CCV (Crankcase Ventilation) system failure leading to oil consumption and seals leaks, ABS/ASC sensor failures, subframe cracking (rare but serious).