🏷️ Basic Information

Make:

BMW

Model:

3 Series

Specific Model:

323i

Model Code:

E46

Year:

2002

Engine Code:

M52TU B25

👋 Introduction

Segment:

Compact Executive Sedan/Coupe

Target Audience:

Enthusiast owners, independent repair shops, BMW dealerships.

Key Competitors:

Mercedes-Benz C-Class, Audi A4, Lexus IS300, Acura TL.

Vehicle Philosophy:

BMW's 'Ultimate Driving Machine' ethos, focusing on balanced handling, responsive engines, and driver engagement.

Manual Value Proposition:

Provides professional-level repair and maintenance data, enabling owners to perform complex tasks, saving on labor costs and ensuring proper vehicle care.

📋 Manual Details

Primary Coverage:

Service, Repair, Workshop

Diagnostic Coverage:

Troubleshooting, Diagnostic Procedures

Estimated Page Count:

Over 1000 (typical for comprehensive BMW workshop manuals)

Type:

Workshop Manual / Service Manual

Language:

English

Format:

Digital (PDF)

📖 Manual Coverage

Engine Mechanical:

Engine removal/installation, cylinder head, pistons, crankshaft, timing, lubrication system, cooling system, intake manifold, exhaust manifold.

Engine Management:

Fuel injection (DME), ignition system, emission control systems, engine sensors, DME control unit.

Transmission Manual:

Clutch, gearbox removal/installation, internal components, shift linkage.

Transmission Automatic:

GM A5S-325Z transmission: removal/installation, hydraulic system, electronic control, torque converter.

Drivetrain:

Driveshaft, differential, axle shafts, wheel bearings.

Suspension:

Front suspension (MacPherson strut, control arms, stabilizer bar), rear suspension (multi-link), shock absorbers, springs, bushings.

Steering:

Power steering system, steering rack, steering column, steering wheel removal/installation.

Brakes:

Front and rear disc brakes, ABS system, DSC system, brake fluid, brake lines, parking brake.

Electrical System:

Battery, charging system (alternator, starter), lighting system, power windows, power locks, central locking, mirrors, wipers, horn, fuse box, relays.

Body And Chassis:

Body panels, doors, hood, trunk, bumpers, interior trim, chassis components, corrosion protection.

Climate Control:

HVAC system, A/C compressor, evaporator, heater core, blower motor, climate control unit.

Safety Systems:

Airbag system, seat belt pre-tensioners, SRS control module.

Maintenance:

Scheduled maintenance (oil changes, filter replacements, spark plugs, brake fluid flush), inspections.

Diagnostics Troubleshooting:

Step-by-step diagnostic procedures for common faults, fault code interpretation (OBD-II).

Repair Rebuild:

Detailed instructions for component removal, disassembly, inspection, repair, and reassembly of all major systems.

Wiring Diagrams:

Comprehensive electrical wiring diagrams for all vehicle systems.

Torque Specifications:

Detailed torque values for all critical fasteners.

Special Tools:

Identification and usage of specialized BMW tools required for specific repairs.

Depth Level:

Comprehensive (from basic maintenance to complete engine and transmission overhauls).

Diagnostic Complexity:

Advanced diagnostics utilizing on-board computer systems and specific test procedures.

📊 Manual Specifications

File Type:

PDF

Searchability:

Searchable text content

Printability:

Printable pages

Image Resolution:

High resolution for diagrams and illustrations

Binding:

N/A (Digital Format)

Paper:

N/A (Digital Format)

⚙️ Engine Specifications

Engine Name:

M52TUB25

Engine Type:

Inline 6-Cylinder, Naturally Aspirated

Displacement:

2494 cc (2.5 Liters)

Bore X Stroke:

84.0 mm x 90.0 mm

Compression Ratio:

10.2:1

Valve Train:

Dual Overhead Camshafts (DOHC), 24 Valves (4 per cylinder), VANOS (Variable Valve Timing).

Horsepower:

184 hp @ 6000 rpm

Torque:

235 Nm (173 lb-ft) @ 3500 rpm

Fuel Delivery:

Sequential Multi-Point Fuel Injection (Bosch Motronic ME 7.2)

Fuel Type:

Premium Unleaded (91 Octane or higher recommended)

Engine Control Unit:

Bosch Motronic ME 7.2

🔧 Transmission

Transmission Type Standard:

5-Speed Manual (Getrag GS5-39DZ)

Transmission Type Optional:

5-Speed Automatic (GM A5S-325Z)

Automatic Features:

Steptronic (manual shifting mode)

📐 Dimensions

Wheelbase:

107.4 inches (2728 mm)

Length:

177.4 inches (4506 mm)

Width:

68.9 inches (1750 mm)

Height:

56.2 inches (1427 mm)

Front Track:

58.5 inches (1486 mm)

Rear Track:

59.3 inches (1506 mm)

Curb Weight:

Approx. 3307 lbs (1500 kg) for sedan

Gross Vehicle Weight Rating:

Varies by body style and options

Towing Capacity:

Not Recommended/Specified by BMW for US models

🛡️ Safety Features

NHTSA Front Impact Driver:

5 Stars

NHTSA Front Impact Passenger:

5 Stars

IIHS Front Small Overlap:

Good (for relevant model years if tested)

ABS:

Standard (Anti-lock Braking System)

Dsc:

Optional/Standard depending on trim (Dynamic Stability Control)

Traction Control:

Standard (part of DSC)

Airbags:

Frontal airbags (driver and passenger), optional side airbags.

Seatbelts:

Three-point inertia-reel seat belts with pre-tensioners and force limiters.

Rollover Protection:

Reinforced chassis and body structure.

💡 Technology Features

Audio System:

Optional BMW Professional RDS audio system, CD player, cassette player.

Navigation:

Optional navigation system (Mk III or Mk IV DVD-based).

Onboard Computer:

Check Control system providing vehicle status and warnings.

Parking Assist:

Optional rear park distance control (PDC).

Cellular:

Optional BMW Assist (emergency call, tele-service).

🔧 Maintenance

Oil Change Interval:

BMW Condition Based Service (CBS) system, typically 10,000-15,000 miles or annually.

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 every 60,000 miles (Long-life spark plugs).

Brake Fluid Flush:

Every 2 years, regardless of mileage.

Engine Oil Type:

SAE 5W-30 Synthetic (BMW Longlife-01 or LL-04)

Engine Oil Capacity:

6.5 Liters (6.9 US Quarts) with filter change

Coolant Type:

BMW Blue Antifreeze (G48) or equivalent ethylene glycol based with corrosion inhibitors.

Transmission Fluid Manual:

BMW Synchromesh Fluid (e.g., MTF-LT-1 or LT-2) or equivalent GL-4 rated gear oil.

Transmission Fluid Automatic:

GM DEXRON III or equivalent (check specific service bulletin for LL-01 specification in later models).

Brake Fluid Type:

DOT 4 (BMW High Performance Brake Fluid P/N 81 22 9 400 340)

Cooling System:

Plastic expansion tank cracks, water pump failure (often plastic impeller), thermostat housing leaks, cracked radiator end tanks.

Engine Components:

VANOS solenoids/seals failure, eccentric shaft sensor failure, oil separator (PCV) system clogging leading to vacuum leaks and rough idle, oil pan gasket leaks.

Suspension:

Front control arm bushings (worn), rear trailing arm bushings, subframe bushings, shock mount failure.

Electrical:

ABS/DSC sensor failures, LCM (Light Control Module) failure, window regulator failures, blower motor resistor failure.

Interior:

Headliner sagging, pixelation on instrument cluster and OBC screen.

📚 Vehicle History

Brand History:

Bayerische Motoren Werke AG (BMW) has a long history of producing performance-oriented and luxurious vehicles, establishing a reputation for engineering excellence and driving dynamics.

E46 Generation Introduction:

The E46 generation of the 3 Series was introduced in 1998 (for the 1999 model year in Europe, later in North America), replacing the E36. It continued BMW's philosophy of driver-focused cars with improved refinement and technology.

323I Positioning:

The 323i was positioned as a mid-range model within the E46 lineup, offering a balance of performance and efficiency with its 2.5-liter inline-six engine.

Production Years E46:

1998-2006 (sedan), 1999-2006 (coupe/convertible), 2000-2006 (wagon).

Production Locations:

Primary manufacturing in Dingolfing, Germany; also produced in various global plants including USA, Mexico, and South Africa.

🏆 Awards & Recognition

Car And Driver 10 Best:

The E46 3 Series generation was frequently recognized on Car and Driver's 10Best lists for its exceptional driving dynamics and overall performance.

Esquire Best Sedan:

Recognized by automotive publications for its blend of luxury, performance, and technology.

Jd Power Dependability:

Early E46 models generally received average to above-average dependability ratings, though specific model years and common issues exist.

Manual Quality:

Certified professional quality, comprehensive and accurate technical data trusted by mechanics globally.