Segment:
Compact Executive Sedan/Coupe
Target Audience:
Enthusiasts seeking detailed DIY repair information, independent repair shops, BMW dealerships.
Key Competitors:
Mercedes-Benz C-Class, Audi A4, Lexus IS, Infiniti G35 (later models).
Manual Utility:
Provides detailed, step-by-step instructions for all maintenance and repair tasks, crucial for owners looking to maintain their vehicle's performance and longevity.
Vehicle Appeal:
Known for its engaging driving dynamics, balanced chassis, and premium build quality.
Engine Mechanical:
Complete overhaul, diagnosis, repair, timing chain, gaskets, seals, pistons, rings, bearings, cylinder head, valves, crankshaft, camshafts.
Engine Management:
Fuel injection (DME), ignition system, emission controls (OBD-II diagnostics), sensors, actuators, ECU diagnosis and programming.
Transmission Manual:
Gearbox disassembly, assembly, clutch system, shifter linkage, bearing replacement, fluid specifications.
Transmission Automatic:
Transmission diagnosis, repair, valve body, torque converter, electronic controls (GM A5S325Z typically), fluid specifications, cooling system.
Drivetrain:
Driveshafts, CV joints, differential, rear axle assembly, wheel bearings.
Suspension:
Front and rear suspension components (struts, shocks, control arms, bushings, sway bars), alignment procedures, diagnosis of noise and handling issues.
Steering:
Power steering system (pump, rack, hoses), steering column, diagnosis of play or leaks.
Brakes:
Hydraulic system (master cylinder, brake lines, calipers, wheel cylinders), ABS system (sensors, modulator), brake pad and rotor replacement, bleeding procedures.
Electrical System:
Wiring diagrams, starter, alternator, battery, charging system, lighting system, fuses, relays.
Body And Chassis:
Body panels, doors, windows, locks, hinges, seals, interior trim, exterior trim, structural components, corrosion protection.
Climate Control:
HVAC system, A/C compressor, refrigerant, heater core, blower motor, climate control module, diagnosis.
Safety Systems:
Airbag system diagnosis and replacement, seatbelt mechanisms.
Maintenance:
Scheduled maintenance intervals, oil changes, filter replacements, spark plug replacement, fluid checks and changes.
Troubleshooting:
Diagnostic flowcharts for common issues, symptom-based troubleshooting guides.
Repair:
Step-by-step instructions for component removal, installation, and adjustment.
Diagnostics:
OBD-II code interpretation, diagnostic tool usage, sensor data analysis.
Specifications And Tolerances:
Torque specifications for fasteners, engine clearances, electrical resistance values.
Depth:
Comprehensive coverage from basic fluid changes and checks to complete engine and transmission rebuilds. Includes detailed electrical system diagnostics and body repair procedures. Suitable for professional mechanics and advanced DIY enthusiasts.
Oil Change Interval:
Variable (based on oil condition sensor, typically ~10,000-15,000 miles or 12-24 months). Refer to manual for specific details and conditions.
Coolant Change Interval:
First change at ~30,000 miles, then every ~30,000 miles or 2 years.
Spark Plug Interval:
~60,000-100,000 miles (depending on plug type used, e.g., Long-life platinum/iridium)
Engine Oil Type:
BMW Longlife-01 (LL-01) or LL-98 approved synthetic oil, SAE 5W-30 or 5W-40 recommended.
Engine Oil Capacity:
6.5 liters (6.9 US quarts) with filter change.
Coolant Type:
BMW Blue/Green Antifreeze/Coolant (G48 ethylene glycol based)
Brake Fluid Type:
DOT 4 (or DOT 4 Plus/Super Duty recommended)
Cooling System:
Plastic coolant expansion tank can become brittle and crack; water pump bearing failure; thermostat housing leaks.
Suspension:
Front control arm bushings (RTABs), rear subframe bushings, and ball joints are common wear items.
Electrical:
ABS/DSC sensor failures, fuel pump module issues, window regulator failures, VANOS solenoid failures (can cause rough idle/performance issues).
Engine:
Oil filter housing gasket leaks, CCV (Crankcase Ventilation) system failure leading to oil leaks and rough running.
