BMW 325 325i 1999 Factory Service Repair Manual

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🏷️ Basic Information Identification Make: BMW Model: 325i Model Variant: 325 Year: 1999 Chassis Code: E46 Codes Engine Code: M52TU B25 👋 Introduction Market Position Segment: Compact Executive Sedan/Coupe Target...

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Sku: 433654

Tags: 1999 325 325i BMW Car Cars Misc

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Description

🏷️ Basic Information

Identification

Make:

Model:

Model Variant:

Year:

Chassis Code:

Codes

Engine Code:

M52TU B25

👋 Introduction

Market Position

Segment:

Compact Executive Sedan/Coupe

Target Audience:

Enthusiast owners, independent repair shops, DIY mechanics

Competitive Analysis

Competitors 1999:

Mercedes-Benz C-Class (W202), Audi A4 (B5), Lexus IS200/300, Alfa Romeo 155/156

Key Features

Driving Dynamics:

Renowned BMW handling, rear-wheel-drive architecture, balanced chassis

Engine Smoothness:

Inline-six engine known for its refinement and power delivery

Build Quality:

Premium interior materials and solid construction typical of BMW

Design:

Classic BMW 'Flame Surfacing' design language, elegant and sporty aesthetics

📋 Manual Details

Coverage Areas

Manual Type:

Factory Service Repair Manual

Language:

English

Format:

Downloadable PDF

Completeness:

Complete Official Factory Documentation

Page Count

Page Count Estimated:

Hundreds of pages (printable)

📖 Manual Coverage

Systems Covered

Engine:

Detailed diagnostics, repair, overhaul, M52TU B25 engine specifics

Engine Management:

DME control unit, sensors, actuators, ignition system, fuel injection

Transmission:

Automatic (Steptronic) and Manual transmission repair, diagnostics, fluid service

Drivetrain:

Differential, driveshafts, wheel bearings, limited-slip differential (if equipped)

Suspension:

Front struts, rear multi-link suspension, bushings, shock absorbers, alignment procedures

Steering:

Power steering system, steering rack, tie rods, steering column

Brakes:

ABS system, brake calipers, rotors, pads, brake fluid flushing, parking brake

Electrical System:

Wiring diagrams, fuse box locations, component testing, battery, alternator, starter

Bodywork:

Body panel removal/installation, doors, hood, trunk, bumpers, glass replacement

HVAC:

Climate control system, A/C compressor, blower motor, evaporator, heater core, refrigerant handling

Interior:

Seats, dashboard, door panels, headliner, trim components

Fuel System:

Fuel pump, fuel injectors, fuel filter, fuel tank

Cooling System:

Radiator, water pump, thermostat, coolant hoses, expansion tank

Exhaust System:

Exhaust manifolds, catalytic converter, muffler, exhaust pipes

Procedures Included

Maintenance:

Scheduled maintenance, oil changes, filter replacements, fluid checks

Troubleshooting:

Diagnostic charts, symptom-based troubleshooting, fault code interpretation

Repair:

Step-by-step repair instructions for all major components

Diagnostics:

Procedures for using diagnostic tools and interpreting data

Rebuilding:

Detailed procedures for engine and transmission rebuilding

Installation:

Installation of new or replacement parts

Specifications:

Torque specifications, clearances, measurements

Technical Depth

Depth:

Comprehensive coverage from basic maintenance to complete engine rebuilds and electrical system diagnostics.

📊 Manual Specifications

File Format

File Type:

Searchability:

Likely text-searchable, allowing for quick location of information

Print Quality

Printability:

Designed for printing, either in full or by specific sections

Binding Type

Binding Type Digital:

N/A (Digital Format)

Paper Type

Paper Type Digital:

N/A (Digital Format)

⚙️ Engine Specifications

Primary Engine

Engine Type:

M52TU B25 - Inline 6-cylinder, Double VANOS

Displacement:

2.5 Liters (2494 cc)

Bore X Stroke:

84.0 mm x 75.0 mm

Compression Ratio:

10.2:1

Performance

Horsepower:

168 hp @ 5500 rpm

Torque:

245 Nm (181 lb-ft) @ 3500 rpm

Fuel System

Fuel Delivery:

Multi-point fuel injection (Bosch Motronic 5.2.1)

Fuel Type:

Unleaded gasoline, 91-93 octane recommended

Engine Management

Ignition Type:

Distributorless ignition system (DIS) with individual coil packs

Timing

Timing Belt Chain:

Timing chain

🔧 Transmission

Standard

Transmission Type Standard:

5-speed Manual Transmission (Getrag 250)

Optional

Transmission Type Optional:

5-speed Automatic Transmission with Steptronic functionality (GM A5S360R/Z)

Features

Steptronic:

Allows manual selection of gears via shifter

Fluid Specs

Manual Transmission Fluid:

BMW MTF LT-2 or equivalent (check manual for specific part number)

Automatic Transmission Fluid:

BMW ATF LT-3 or equivalent (check manual for specific part number)

📐 Dimensions

Exterior

Length:

4,471 mm (176.0 inches)

Width:

1,739 mm (68.5 inches)

Height:

1,392 mm (54.8 inches)

Wheelbase:

2,725 mm (107.3 inches)

Weights

Curb Weight Manual:

Approximately 1,450 kg (3,197 lbs)

Curb Weight Automatic:

Approximately 1,480 kg (3,263 lbs)

🛡️ Safety Features

Ratings

NHTSA Front Impact:

Not rated or not available for this model year and specific trim.

IIHS Side Impact:

Not rated or not available for this model year and specific trim.

Active Features

Standard Anti-lock Braking System

Traction Control:

Optional or standard depending on market/trim (ASC+T - Automatic Stability Control + Traction)

Passive Features

Airbags:

Driver and front passenger airbags

Seatbelts:

Three-point inertia-reel seatbelts with pretensioners

Body Structure:

Reinforced safety cell with crumple zones

💡 Technology Features

Infotainment

Head Unit:

Factory BMW Business CD or Professional CD radio with cassette player, optional navigation system.

Speakers:

Standard speaker system, optional premium Hi-Fi system.

Driver Assistance

Cruise Control:

Standard electronic cruise control.

Parking Sensors:

Optional rear park distance control (PDC).

Connectivity

Phone Integration:

Optional Bluetooth preparation or factory installed phone cradle.

🔧 Maintenance

Service Intervals

Oil Change Interval:

Typically every 7,500 - 15,000 miles or 12-24 months (depending on driving conditions and oil used; consult manual for specific CBS recommendations).

Air Filter Replacement:

Every 30,000 - 60,000 miles or as needed.

Spark Plug Replacement:

Around 60,000 - 100,000 miles (depending on plug type; iridium plugs offer longer life).

Coolant Flush:

Every 30,000 - 60,000 miles or 2-4 years.

Brake Fluid Flush:

Every 2 years, regardless of mileage.

Fluid Specifications

Engine Oil Type:

SAE 5W-30 or 5W-40 Synthetic (BMW LL-01 approved is ideal if available, otherwise meet API SN/CF specs)

Engine Oil Capacity:

Approximately 6.5 liters (6.9 US quarts) with filter change.

Coolant Type:

BMW Blue Antifreeze/Coolant (G48) or equivalent silicate-free ethylene glycol coolant

Brake Fluid Type:

DOT 4 Synthetic

Known Issues

Cooling System Failure:

Plastic components (expansion tank, thermostat housing, water pump impellers) can become brittle and crack, leading to leaks.

Oil Leaks:

Valve cover gasket, oil pan gasket, and oil filter housing gasket are common leak points.

Suspension Wear:

Control arm bushings, ball joints, and shock mounts can wear out, affecting handling and ride quality.

Window Regulator Failure:

Plastic clips and mechanisms in the window regulators can break.

Ccv System Clogging:

The Crankcase Ventilation (CCV) system can clog, leading to increased oil consumption and pressure buildup.

Vanos Issues:

The Double VANOS system can suffer from worn seals or faulty solenoids, affecting performance and idle quality.

📚 Vehicle History

Brand Heritage

Bmw Philosophy:

Sheer Driving Pleasure, focus on performance, engineering, and driver engagement.

Model Evolution

E46 Introduction:

The E46 generation of the 3 Series was introduced in 1998 (for the 1999 model year in North America), replacing the E36 generation.

E46 Significance:

Marked a significant evolution in design, technology, and refinement over its predecessor, setting new benchmarks in the segment.

Production

E46 Production Years:

1998-2006

Manufacturing Locations:

Primarily Germany (Munich, Dingolfing), with assembly plants in other countries.

🏆 Awards & Recognition

Recognitions

Car And Driver 10Best:

The E46 3 Series generation (including the 325i) was a frequent recipient of Car and Driver's 10Best awards for its class-leading driving dynamics.

Ward Powertrain:

The M52 engine family, including the M52TU variant, was recognized for its smooth operation and refinement.