BMW M3 2003 Factory Service Repair Manual

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🏷️ Basic Information Identification Make: BMW Model: M3 Year: 2003 Codes Chassis Code: E46 Engine Code Primary: S54 👋 Introduction Market Position Positioning: The BMW M3 (E46) represents the pinnacle...

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Description

🏷️ Basic Information

Identification

Make:

Model:

Year:

Codes

Chassis Code:

Engine Code Primary:

👋 Introduction

Market Position

Positioning:

The BMW M3 (E46) represents the pinnacle of performance and engineering for its era, a driver-focused sports coupe/convertible that competed with high-performance rivals.

Competitive Analysis

Competitors:

Porsche 911 Carrera, Mercedes-Benz C32 AMG, Audi S4 (B6), Chevrolet Corvette

Key Features

Driving Dynamics:

Renowned for its balanced chassis, precise steering, and potent engine, offering an engaging driving experience.

Engine Performance:

The S54 engine is a high-revving masterpiece, delivering exhilarating performance.

📋 Manual Details

Coverage Areas

Primary Coverage:

Complete factory service and repair

Secondary Coverage:

Maintenance, troubleshooting, diagnostics, and specifications

Page Count

Estimated Pages:

Numerous (hundreds, as stated)

Manual Type

Type:

Factory Service Repair Manual

Language

Language:

English

Format

Format:

Downloadable PDF

📖 Manual Coverage

Systems Covered

Engine:

S54 naturally aspirated inline-6, M-specific tuning, VANOS, throttle bodies, exhaust, cooling system

Transmission:

Getrag 420G 6-speed manual, clutch, flywheel, driveshaft, differential

Brakes:

Front and rear disc brakes, ABS, DSC, brake fluid flush procedures

Suspension:

Front McPherson strut, rear multi-link, M-tuned components, alignment specifications

Steering:

Hydraulic power steering, steering rack, column

Electrical:

Wiring diagrams, component testing, fuses, relays, battery, alternator, starter, DME, EWS, comfort electronics

Bodywork:

Exterior panels, interior trim, doors, hood, trunk, convertible top (if applicable to specific sub-models), body sealing

HVAC:

Climate control system, refrigerant, components, diagnosis

Fuel System:

Fuel pump, injectors, fuel filter, EVAP system

Procedures Included

Maintenance:

Oil change, filter replacement, spark plug replacement, air filter replacement, brake pad/rotor replacement, coolant flush

Diagnostics:

Troubleshooting flowcharts, DTC (Diagnostic Trouble Code) interpretation, component testing procedures

Repair:

Engine component overhaul, transmission rebuild, suspension component replacement, electrical system repair, body panel repair

Installation:

Component replacement, sensor installation, accessory installation

Calibration:

Throttle body synchronization, ABS/DSC sensor calibration

Technical Depth

Depth:

Comprehensive, from basic scheduled maintenance to complete engine and transmission overhauls, including in-depth electrical system diagnosis

📊 Manual Specifications

File Format

PDF Quality:

High-resolution, searchable PDF for ease of navigation and printing

Print Quality

Printability:

Designed for clear printing of individual pages or the entire manual

Binding Type

Binding:

Not applicable (digital PDF download)

Paper Type

Paper Type:

Not applicable (digital PDF download)

⚙️ Engine Specifications

Primary Engine

Engine Type:

Naturally Aspirated Inline-6

Engine Code:

S54B32

Displacement:

3.2 Liters (3246 cc)

Bore X Stroke:

87.0 mm x 91.0 mm

Compression Ratio:

11.5:1

Performance

Horsepower:

333 hp @ 7900 rpm

Torque:

262 lb-ft @ 4900 rpm

Redline:

8000 rpm

Fuel System

Fuel Delivery:

Electronic Fuel Injection (EFI), individual throttle bodies

Fuel Type:

Premium Unleaded Gasoline (91 octane or higher recommended)

Engine Management

MS43 Motronic

Timing System:

Double VANOS (Variable Valve Timing)

🔧 Transmission

Standard

Type:

Getrag 420G 6-Speed Manual

Optional

Type:

SMG (Sequential Manual Gearbox) - Electro-hydraulically actuated clutch and gear shifting

Features

Clutch:

Hydraulically actuated single-plate dry clutch

Final Drive Ratio:

3.62:1 (standard)

Fluid Specifications

Manual Transmission Fluid:

BMW recommends specific synthetic gear oil (e.g., Pentosin MTF LT-2 or equivalent)

📐 Dimensions

Exterior

Coupe Length:

177.7 inches (4514 mm)

Coupe Width:

70.1 inches (1780 mm)

Coupe Height:

53.3 inches (1354 mm)

Coupe Wheelbase:

107.4 inches (2729 mm)

Convertible Length:

177.8 inches (4516 mm)

Convertible Width:

70.1 inches (1780 mm)

Convertible Height:

54.1 inches (1374 mm)

Convertible Wheelbase:

107.4 inches (2729 mm)

Weights

Coupe Curb Weight:

Approximately 3400-3500 lbs (1540-1590 kg)

Convertible Curb Weight:

Approximately 3700-3800 lbs (1680-1725 kg)

Wheel Bolt Pattern:

5x120

Wheel Offset:

ET47 (front), ET27 (rear) with 18-inch wheels, varies with wheel size

Cargo

Coupe Trunk Volume:

Approximately 11.2 cu ft (317 Liters)

🛡️ Safety Features

Ratings

NHTSA Front Impact:

4/5 Stars (Driver), 4/5 Stars (Passenger)

IIHS Side Impact:

Active Features

Traction Control:

Dynamic Stability Control (DSC), Automatic Stability Control and Traction (ASC+T)

Braking Assist:

Anti-lock Braking System (ABS), Dynamic Brake Control (DBC)

Passive Features

Airbags:

Frontal airbags, front side-impact airbags, available front knee airbags

Rollover Protection:

Pop-up rollover protection bars for convertible model

Seatbelts:

Three-point inertia-reel seatbelts with pretensioners and force limiters

💡 Technology Features

Infotainment

Head Unit:

BMW Business CD or Professional CD/RDS radio, optional Navigation system (MKIV)

Audio System:

Harman Kardon premium audio system available as an option.

Driver Assistance

Cruise Control:

Standard electronic cruise control.

Parking Assist:

Optional rear park distance control (PDC).

Connectivity

Phone Integration:

Optional Bluetooth hands-free interface (may require cradle).

Instrumentation

Gauge Cluster:

M-specific instrument cluster with larger tachometer, oil temperature gauge, and integrated oil level sensor.

🔧 Maintenance

Service Intervals

Oil Change Interval:

Variable, typically indicated by the Condition Based Service (CBS) system (often around 10,000-15,000 miles or 12-24 months)

Spark Plug Replacement:

Approximately 60,000 miles (refer to manual for specific plug type and gap)

Brake Fluid Flush:

Every 2 years (regardless of mileage)

Coolant Flush:

Initial fill is typically long-life; refer to manual for replacement intervals (often around 4-5 years or 50,000-60,000 miles).

Fluid Specifications

Engine Oil Type:

BMW Longlife-01 (LL-01) approved synthetic oil, SAE 0W-40 or 5W-40 recommended.

Engine Oil Capacity:

6.9 US quarts (6.5 Liters) with filter change.

Coolant Type:

BMW Blue Antifreeze/Coolant (G48 formulation) or equivalent propylene glycol-based coolant.

Power Steering Fluid:

Pentosin CHF 11S or equivalent hydraulic fluid.

Known Issues

Rod Bearings:

Known premature wear on connecting rod bearings, especially in earlier E46 M3s, due to increased clearances and oil flow. Regular inspection and potential replacement are advised.

Subframe Mounts:

Cracking or separation of rear subframe mounting points from the chassis is a significant concern. Reinforcement kits are available.

Vanos System:

Potential issues with VANOS solenoids or rattle due to wear, affecting performance and drivability. Rebuild kits are available.

Throttle Actuators:

Failure of the electronic throttle actuators can lead to limp mode or poor engine response.

📚 Vehicle History

Brand Heritage

Bmw Performance Division:

BMW M GmbH, established in 1972, responsible for developing high-performance versions of BMW production vehicles.

Model Evolution

M3 Lineage:

The E46 M3 is the fourth generation of the M3, succeeding the E36 M3 and known for significant upgrades in performance and handling.

Production

Production Years E46 M3:

2001-2006

Assembly Location:

Regensburg, Germany

🏆 Awards & Recognition

Recognitions

Car And Driver 10Best:

Named to Car and Driver's 10Best list multiple times during its production run, lauded for its performance and driving dynamics.

Motor Trend Performance Car:

Frequently recognized by automotive publications for its segment-leading performance and handling.

Certifications

Emissions Standards:

Meets relevant emissions standards for its model year (e.g., LEV).