Market Segment:
Premium compact executive sedan/wagon
Positioning:
The BMW 3 Series represents BMW's core offering in the compact executive segment, emphasizing driving dynamics, quality, and brand prestige.
Key Competitors:
Audi A4, Mercedes-Benz C-Class, Lexus IS, Infiniti G35/G37
Driving Dynamics:
Renowned for its balanced chassis, responsive steering, and engaging driving experience, particularly with the xDrive all-wheel-drive system enhancing traction.
Powertrain:
Features the inline-6 cylinder naturally aspirated N52 engine known for its smooth power delivery and refinement.
Systems Covered:
Engine Mechanical, Engine Management, Fuel System, Ignition System, Exhaust System, Transmission (Automatic & Manual), Drivetrain (xDrive AWD), Suspension (Front & Rear), Steering, Brakes (ABS, DSC), Electrical System, Body Control Modules, HVAC, Interior/Exterior Lighting, Body & Chassis, Body Repair, Troubleshooting, Wiring Diagrams, Maintenance Schedules, Technical Specifications
Estimated Page Count:
1500+
Manual Type:
Workshop Service Repair Manual
Engine Mechanical:
Detailed disassembly, inspection, and reassembly procedures for the N52B30 engine, including cylinder head, block, crankshaft, connecting rods, pistons, camshafts, valve train.
Engine Management:
Diagnostic trouble codes (DTCs), sensor readings, ECU functions, VANOS system, Valvetronic system, ignition timing, fuel injection control, emission control systems (SAI, secondary air injection).
Drivetrain:
xDrive all-wheel-drive system operation, transfer case, front and rear differentials, axle shafts, driveshafts, propeller shafts, wheel hub bearing replacement.
Suspension:
Front and rear suspension component identification, disassembly, assembly, alignment specifications, shock absorber/strut replacement, control arm Bushing replacement.
Brakes:
Brake system diagnostics, ABS/DSC module function, hydraulic system bleeding, brake pad and rotor replacement, caliper overhaul, parking brake adjustment.
Electrical System:
Component location, wiring diagrams for all circuits, battery, alternator, starter motor, fuse box layouts, body control modules (BCM), comfort electronics, diagnostic connectors (OBD-II).
Maintenance:
Oil and filter changes, air filter replacement, cabin air filter replacement, spark plug replacement, coolant flush and replacement, brake fluid flush and replacement, transmission fluid and filter service, differential fluid changes.
Troubleshooting:
Step-by-step diagnostic procedures for common symptoms such as poor starting, rough idling, loss of power, braking issues, electrical faults, and HVAC system malfunctions.
Repair:
Detailed repair instructions for engine components, transmission, drivetrain, suspension, steering, brakes, electrical systems, climate control, and body panels.
Diagnostics:
Procedures for reading and interpreting diagnostic trouble codes (DTCs), live data stream analysis, and component testing using diagnostic tools.
Technical Depth:
Comprehensive: Covers everything from routine maintenance and basic repairs to advanced diagnostics, component overhauls, and full engine/transmission rebuilds.
Transmission Type:
6-Speed Manual (Optional on some models, 328xi primarily automatic)
Transmission Type:
6-Speed Steptronic Automatic Transmission
Transmission Features:
Adaptive electronic control, manual shift mode via Steptronic shifter.
Automatic Transmission Fluid:
BMW ATF JWS 3309 (e.g., Pentosin ATF1 or equivalent)
Manual Transmission Fluid:
BMW MTF LT-2 or equivalent
Transfer Case Fluid:
BMW Transfer Case Fluid (e.g., DTF-1)
NHTSA Front Impact:
5 Stars
NHTSA Side Impact:
5 Stars
Active Safety Systems:
Dynamic Stability Control (DSC), Dynamic Traction Control (DTC), Anti-lock Braking System (ABS), Electronic Brake Force Distribution (EBD), Cornering Brake Control (CBC).
Passive Safety Features:
Front airbags, front side-impact airbags, front and rear head protection system (air curtains), active front head restraints, three-point seat belts with pretensioners.
Infotainment System:
Available with BMW's iDrive system (likely CCC or later CIC depending on specific build date within the range), featuring a central display, controller knob, and various optional modules like navigation, Bluetooth, and satellite radio.
Driver Assistance Features:
Park Distance Control (PDC), Xenon headlights with adaptive turning, optional rain-sensing wipers and automatic headlight control.
Connectivity Options:
Optional Bluetooth hands-free interface, USB/Auxiliary audio inputs.
Oil Change Interval:
Condition-based, typically around 10,000-15,000 miles or annually, indicated by the vehicle's service indicator (CBS).
Brake Fluid Interval:
Every 2 years, regardless of mileage.
Spark Plug Interval:
Around 60,000-100,000 miles, depending on material (e.g., platinum or iridium plugs).
Engine Oil Specification:
BMW Longlife-01 (LL-01) or Longlife-04 (LL-04) synthetic oil, typically SAE 5W-30 or 0W-30.
Coolant Specification:
BMW Blue Antifreeze/Coolant (G48), a silicate-containing ethylene glycol-based coolant.
Power Steering Fluid:
BMW CHF 11S or equivalent hydraulic fluid.
Common Issues Engine:
Oil leaks from valve cover gasket and oil pan gasket, coolant leaks from thermostat housing and water pump (plastic components), potential VANOS solenoid failure, ignition coil and spark plug issues, CCV (crankcase ventilation) system failure leading to oil consumption/seals.
Common Issues Drivetrain:
XDrive transfer case fluid degradation, potential clunking from CV joints, driveshaft flex disc failure.
Common Issues Suspension:
Worn control arm bushings, ball joints, and tie rod ends leading to steering wander and uneven tire wear. Front strut mount bearing failure.
Common Issues Electrical:
Water pump failure (electric pump), alternator failure, starter motor issues, sensor failures (e.g., ABS/wheel speed sensors), power window regulator failures, CIC/iDrive system glitches.
Brand Philosophy:
BMW's core philosophy revolves around 'The Ultimate Driving Machine,' emphasizing performance, engineering, and driver engagement.
Generation:
E90/E91 Generation (2006-2011 for sedan, 2006-2012 for wagon)
Design Language:
Introduced a more angular and modern design compared to its predecessor (E46), with crisper lines and improved aerodynamics.
Manufacturing Locations:
Primarily Dingolfing, Germany; also Regensburg, Germany; Rosslyn, South Africa; and Spartanburg, USA (for SAVs, but relevant for global production network).
