🏷️ Basic Information

Make:

BMW

Model:

740i

Year:

1994

Chassis Code:

E38

Engine Code:

M60B40

👋 Introduction

Positioning:

The 1994 BMW 740i (E38) represented the pinnacle of German luxury and engineering for its era, competing with flagship sedans from Mercedes-Benz, Audi, and Lexus. It offered a blend of refined performance, advanced technology, and opulent comfort, setting a high standard for executive sedans.

Competitors:

Primary competitors included the Mercedes-Benz S-Class (W140), Lexus LS400, and Audi A8 (first generation). The 740i distinguished itself with its engaging driving dynamics, V8 engine performance, and BMW's characteristic driver-focused cockpit.

Distinguishing Features:

Powerful M60B40 V8 engine, sophisticated E38 chassis, advanced electronic systems for its time (e.g., early traction control, climate control), comfortable and luxurious interior, and a focus on driving pleasure.

📋 Manual Details

Systems Covered:

Engine, Transmission (Automatic), Driveline, Suspension, Steering, Brakes, Electrical System (including ECUs, wiring diagrams), Climate Control, Fuel System, Exhaust System, Cooling System, Body & Chassis, Interior Trim, Emissions Control, Diagnostic Trouble Codes (DTCs), Maintenance Procedures, Troubleshooting Guides.

Total Pages:

Approx. 1500+ pages (typical for comprehensive factory service manuals of this era)

Type:

Official Factory Service & Repair Manual

Language:

English

Format:

Software (Digital - likely PDF or proprietary viewer)

📖 Manual Coverage

Engine Mechanical:

Detailed disassembly, inspection, and reassembly of the M60B40 V8 engine, including cylinder heads, pistons, crankshaft, camshafts, valvetrain, oil pump, and timing components.

Engine Management:

Diagnosis and repair of the Motronic engine management system, fuel injection, ignition timing, idle control, and emissions control systems.

Transmission Automatic:

Service and repair procedures for the ZF 5HP30 5-speed automatic transmission, including fluid changes, torque converter service, valve body diagnosis, and electronic control unit (TCU) interaction.

Driveline:

Rear-wheel drive system, including driveshaft, differential, and axle shafts. Lubrication and inspection procedures.

Suspension Front:

MacPherson strut independent front suspension, including shock absorbers, springs, control arms, bushings, and wheel bearings. Alignment specifications.

Suspension Rear:

Multi-link independent rear suspension, including shock absorbers, springs, control arms, bushings, and subframe. Alignment specifications.

Steering:

Hydraulic power steering system, including steering rack, power steering pump, fluid lines, and steering column. Diagnosis and repair.

Brakes Front:

Ventilated disc brakes, including caliper, rotor, pads, and brake lines. Anti-lock Braking System (ABS) sensor and module diagnosis.

Brakes Rear:

Solid disc brakes, including caliper, rotor, pads, and brake lines. ABS sensor diagnosis.

Electrical Charging:

Alternator, battery, and charging system testing and repair.

Electrical Lighting:

Headlights, taillights, interior lighting, and auxiliary lighting systems. Bulb specifications and troubleshooting.

Electrical Accessories:

Power windows, power locks, power seats, sunroof, mirrors, wipers, horn, and radio system diagnostics and repair.

Body Exterior:

Body panels, doors, hood, trunk lid, bumpers, and glass. Removal and installation procedures. Dent repair and panel alignment.

Body Interior:

Dashboard, center console, door panels, headliner, and seating. Removal and installation of interior trim components.

Climate Control:

Automatic climate control system (IHKA), including HVAC unit, blower motor, refrigerant system, temperature sensors, and diagnostic procedures.

Fuel System:

Fuel tank, fuel pump, fuel filter, fuel injectors, and fuel lines. Pressure testing and component replacement.

Cooling System:

Radiator, coolant hoses, water pump, thermostat, and expansion tank. Flush and fill procedures, leak detection.

Exhaust System:

Exhaust manifolds, catalytic converters, mufflers, and exhaust pipes. Component replacement and gasket service.

Emissions Control:

Diagnosis and repair of emission control systems, including EVAP, EGR, and secondary air injection (if applicable).

Preventative Maintenance:

Oil and filter changes, air filter replacement, spark plug replacement, coolant flushes, brake fluid changes, differential fluid changes, transmission fluid and filter changes.

Diagnostic Troubleshooting:

Systematic troubleshooting steps for common and uncommon faults, including symptoms, causes, and recommended repairs. Use of diagnostic tools and fault code interpretation.

Component Replacement:

Step-by-step instructions for removing, inspecting, and installing major and minor components across all vehicle systems.

Alignment Specifications:

Detailed front and rear wheel alignment angles, camber, caster, toe, and thrust angle specifications.

Torque Specifications:

Precise torque values for all critical fasteners and bolt connections.

Wiring Diagrams:

Comprehensive electrical wiring diagrams for all vehicle systems, including component identification and connector pinouts.

Rebuild Procedures:

Detailed instructions for the overhaul of major mechanical components like the engine and transmission.

Depth:

Comprehensive, covering everything from basic scheduled maintenance to in-depth engine and transmission rebuilds, advanced electrical diagnostics, and bodywork repairs. Suitable for professional technicians and advanced DIY enthusiasts.

📊 Manual Specifications

Digital Format:

Likely PDF or proprietary e-book format with searchable text and hyperlinked sections. High-resolution diagrams and images.

Print Readability:

Designed for clear digital display and printing. High contrast and legible text. Schematics and diagrams are detailed and accurate.

Binding:

N/A (Digital Software)

Paper Quality:

N/A (Digital Software)

⚙️ Engine Specifications

Engine Type:

Naturally Aspirated V8

Engine Code:

M60B40

Displacement:

3982 cc (4.0 Liters)

Bore X Stroke:

84 mm x 89.6 mm

Compression Ratio:

10.0:1

Valve Train:

DOHC, 4 valves per cylinder, Double VANOS (variable valve timing)

Horsepower:

282 hp @ 5800 rpm

Torque:

295 lb-ft @ 4500 rpm

Fuel Delivery:

Multi-point Fuel Injection (Bosch Motronic M3.3)

Recommended Fuel:

Premium Unleaded Gasoline (91 octane or higher)

Coolant Type:

BMW Blue Antifreeze/Coolant (Glysantin G48 or equivalent)

Oil Capacity:

7.5 Liters (approx. 8 US Quarts) with filter change

Recommended Oil Viscosity:

BMW High Performance Synthetic 5W-30 or 10W-40 (refer to manual for specific temperature ranges)

🔧 Transmission

Transmission Type:

ZF 5HP30 5-Speed Automatic Transmission

Optional Transmission:

None available for 740i in 1994.

Transmission Control:

Electronic control with modes (e.g., Sport, Economy) and adaptive shift programming.

Transmission Fluid Type:

ATF (Automatic Transmission Fluid) Dexron III or equivalent (BMW part number 83 22 0 026 955 or equivalent)

Fluid Capacity:

Approx. 9.0 Liters (total capacity, including torque converter). Approximately 4.5 Liters for a pan drop and fill.

📐 Dimensions

Length:

5024 mm (197.8 in)

Width:

1862 mm (73.3 in)

Height:

1434 mm (56.5 in)

Wheelbase:

2930 mm (115.4 in)

Curb Weight:

1850 kg (4079 lbs)

Gross Vehicle Weight Rating:

2345 kg (5170 lbs)

🛡️ Safety Features

NHTSA Front Impact Rating:

Not rated by NHTSA for this model year, but known for robust E38 chassis construction.

ABS:

Standard Anti-lock Braking System (ABS)

Traction Control:

Standard Traction Control System (ASC)

Airbags:

Driver and passenger front airbags

Seatbelts:

3-point inertia-reel seatbelts with pretensioners (front)

Body Structure:

Reinforced chassis and safety cell construction

💡 Technology Features

Audio System:

BMW Professional Radio/Cassette or optional CD player. Often featured premium sound systems by brands like Harmon Kardon or Bose depending on options.

Navigation:

Optional BMW Navigation system with a CRT screen in the dashboard.

Cruise Control:

Standard electronic cruise control.

Telematics:

Early cellular telephone integration (optional).

Climate Control System:

Dual-zone automatic climate control (IHKA) with advanced sensor systems for maintaining cabin temperature.

Seating:

Power adjustable front seats with memory, heated front seats (optional), and lumbar support.

🔧 Maintenance

Oil Change Interval:

Typically 7,500 to 10,000 miles or 12-18 months with synthetic oil, or as indicated by the vehicle's 'Condition Based Service' (CBS) system (if equipped and functional).

Transmission Fluid Interval:

Recommended at 60,000 miles or 4-5 years for typical driving conditions. Heavy duty use may require more frequent changes.

Spark Plug Replacement:

Typically 60,000 miles for original-style spark plugs (refer to manual for exact type and interval).

Coolant Flush:

Every 2-3 years or 30,000-45,000 miles.

Power Steering Fluid:

Pentosin CHF 11S or equivalent

Brake Fluid:

DOT 4

Differential Fluid:

Hypoid gear oil SAE 85W-90 API GL-5

Engine M60:

Nikasill cylinder wall wear (especially in earlier models), head gasket leaks, oil pan gasket leaks, VANOS solenoid failures, and ignition coil issues.

Transmission Zf 5Hp30:

Valve body issues, transmission control module (TCM) failures, and leaks from the mechatronic sleeve.

Electrical:

ABS/ASC module failures, climate control module issues, pixelation on the instrument cluster display, and door lock actuator failures.

Suspension Bushings:

Wear and tear on control arm bushings, sway bar links, and subframe bushings, leading to noise and handling degradation.

Cooling System:

Plastic coolant expansion tanks can become brittle and crack, leading to leaks. Water pump failures and thermostat sticking are also common.

📚 Vehicle History

Bmw Legacy:

BMW, founded in 1916, has a long-standing reputation for building high-performance, luxurious, and driver-focused automobiles. The 'Ultimate Driving Machine' slogan reflects their commitment to engineering excellence and driving dynamics.

E38 Generation:

The E38 generation of the BMW 7 Series (1994-2001) succeeded the E32. It represented a significant advancement in design, technology, and comfort, solidifying BMW's position in the luxury sedan market. The 740i was a core model, offering a powerful V8 engine in a sleek and sophisticated package.

Production Years:

1994-2001 (for the E38 generation)

Manufacturing Location:

Dingolfing, Germany

🏆 Awards & Recognition

Automotive Journalism Awards:

While specific awards for the 1994 740i are not as readily documented as later models, the E38 platform consistently received praise from automotive publications for its driving dynamics, engineering, and luxury amenities. It was often cited as a benchmark for its class.

Car And Driver Comparison:

Car and Driver often included the 740i in its '10Best' lists and compared it favorably against rivals, highlighting its performance and handling prowess.