Engine Mechanical:
Complete overhaul, component replacement (pistons, rods, crankshaft, camshafts, valves, seals, gaskets)
Engine Electrical:
Ignition system, fuel injection system, sensor diagnostics, ECU mapping, starter, alternator
Turbocharging System:
Twin-turbocharger system, intercooler, wastegates, boost pressure control, diagnostic procedures
Fuel System:
High-pressure fuel pump, injectors, fuel lines, fuel tank, fuel pressure testing
Cooling System:
Radiator, water pump, thermostat, coolant hoses, expansion tank, bleeding procedures
Exhaust System:
Catalytic converters, mufflers, exhaust manifold, oxygen sensors, leak detection
Transmission Manual:
Clutch, gearbox overhaul, shift mechanism, fluid changes, component replacement
Transmission Automatic:
DCT (Dual Clutch Transmission) service, fluid changes, mechatronics unit diagnostics, torque converter
Drivetrain:
Driveshafts, differential, CV joints, U-joints, wheel bearings
Suspension:
Struts, shocks, springs, control arms, bushings, alignment procedures, M Sport suspension
Steering:
Power steering system, steering rack, tie rods, steering column, electric power steering (EPS) diagnostics
Brakes:
Brake pads, rotors, calipers, brake lines, ABS system, DSC (Dynamic Stability Control), brake fluid flushing
Electrical System Chassis:
Lighting, power windows, locks, mirrors, wipers, horn, interior electronics
Body And Interior:
Body panel removal/installation, door mechanisms, seat adjustments, trim pieces, convertible top mechanism (E93)
HVAC System:
Air conditioning, heating, climate control module, blower motor, refrigerant service
Safety Systems:
Airbag system, seatbelt pre-tensioners, SRS module diagnostics
Infotainment System:
iDrive system, navigation, audio, Bluetooth connectivity, wiring diagrams
Preventative Maintenance:
Oil changes, filter replacements, fluid checks and top-offs, spark plug replacement, belt inspection
Troubleshooting Diagnostics:
Fault code interpretation, symptom-based troubleshooting, component testing, wiring diagrams
Component Replacement:
Detailed step-by-step instructions for replacing virtually all mechanical and electrical components
Engine Rebuilding:
Full engine disassembly, inspection, and reassembly procedures with torque specifications
Transmission Service:
Fluid changes, filter replacements, seal replacement, clutch component replacement
Brake System Service:
Pad and rotor replacement, caliper service, brake line replacement, bleeding procedures
Suspension Alignment:
Adjustment procedures for camber, caster, and toe angles, specific to the 335is model
Electrical Component Testing:
Testing of sensors, actuators, control modules, and wiring harnesses
Software Updates Coding:
Information on software updates for various modules (where applicable and generally achievable with advanced tools)
Diagnostics Level:
Advanced diagnostics, including use of diagnostic scan tools (e.g., ISTA/D - information on common codes and modules)
Repair Procedures:
Detailed, step-by-step instructions for a wide range of repairs, from minor adjustments to major overhauls
Torque Specifications:
Comprehensive list of all critical torque specifications for fasteners throughout the vehicle
Wiring Diagrams:
Detailed electrical wiring diagrams for all major systems
Exploded Views:
Illustrations and exploded views of various components and assemblies for clarity
Oil Change Interval:
Typically every 10,000-15,000 miles or 12-24 months, depending on driving conditions (Condition Based Service - CBS)
Brake Fluid Flush:
Every 2 years
Spark Plug Replacement:
Around 60,000 miles
Coolant Replacement:
BMW recommends lifetime coolant, but proactive replacement around 5 years or 100,000 miles is advisable
Engine Oil Type:
BMW Longlife-01 (LL-01) or BMW Longlife-04 (LL-04) approved synthetic oil, typically 5W-30 or 0W-40 depending on climate
Engine Oil Capacity:
6.5 US quarts (6.2 Liters) with filter change
Coolant Type:
BMW Blue or Pink (G48 ethylene glycol-based coolant)
Power Steering Fluid:
Pentosin CHF 11S or Pentosin CHF 202 (for hydraulic steering systems, check specific VIN for electric systems)
N54 Common Issues:
High-pressure fuel pump (HPFP) failure, fuel injector issues, turbocharger wastegate rattle, oil leaks (valve cover gasket, oil pan gasket), water pump failure, PCV system issues
Dct Common Issues:
Mechatronics unit issues, clutch pack wear (less common but possible with high mileage/hard use)
E9X Platform Common Issues:
Vibration issues from driveshaft flex disc, differential seal leaks, HVAC blower motor resistor failure