🏷️ Basic Information

Make:

BMW

Model:

7 Series

Model Variant:

750iL

Chassis Code:

E32

Covered Years:

1988, 1989, 1990, 1991, 1992, 1993, 1994

Engine Code:

M70B50

👋 Introduction

Segment:

Full-size luxury sedan

Competitors Era:

Mercedes-Benz S-Class (W126/W140), Lexus LS400, Jaguar XJ, Cadillac DeVille

Distinction:

Known for its V12 engine, luxurious interior, advanced technology for its time, and commanding road presence.

Target Audience:

Affluent buyers seeking a blend of performance, comfort, and prestige.

📋 Manual Details

Manual Type:

Complete Workshop Service Repair Manual

Language:

English

Format:

Downloadable Digital Manual (Likely PDF)

Estimated Page Count:

Over 1000 pages (typical for comprehensive workshop manuals of this era)

📖 Manual Coverage

Engine:

Complete V12 engine (M70B50), including cooling, lubrication, fuel injection (Bosch Motronic), ignition, emissions control, and engine management

Transmission:

Automatic transmission (e.g., ZF 4HP24) overhaul, diagnostics, fluid service, and shift control

Drivetrain:

Rear-wheel drive system, driveshafts, differential, axle components

Suspension:

Front and rear suspension systems, including components, adjustments, and troubleshooting

Steering:

Power steering system, steering rack, hydraulic components

Brakes:

Hydraulic brake system, ABS (Anti-lock Braking System), caliper service, rotor replacement, fluid specifications and bleeding procedures

Electrical:

Complete electrical system, including wiring diagrams, component testing, fuse and relay locations, lighting, starting and charging system, battery management

Body And Chassis:

Body construction, interior trim, exterior body panels, doors, hood, trunk, glass, seals

Climate Control:

HVAC system, A/C service, heater core, blower motor, climate control unit diagnostics

Comfort And Convenience:

Power seats, power windows, central locking, sunroof operation, cruise control, interior electronics

Maintenance:

Scheduled maintenance tasks, oil changes, filter replacements, fluid checks and changes, tune-ups

Troubleshooting:

Diagnostic procedures for common and uncommon issues, fault code interpretation (if applicable), symptom-based troubleshooting guides

Repair:

Step-by-step repair instructions for all major vehicle systems, component removal and installation, adjustments, and calibration

Overhaul:

Detailed procedures for engine and transmission overhauls, brake system component overhauls

Diagnosis:

Electrical system diagnostics, engine performance diagnostics, ABS system troubleshooting

Depth:

Comprehensive, covering basic maintenance to full engine and transmission rebuilds, including detailed electrical schematics and diagnostic procedures

📊 Manual Specifications

File Type:

Likely PDF

Searchability:

Should feature searchable text for efficient information retrieval

Resolution:

High resolution for clear text and diagrams

Binding:

Not applicable (Downloadable)

Paper Quality:

Not applicable (Downloadable)

⚙️ Engine Specifications

Engine Name:

M70 V12

Engine Displacement:

5.0 Liters (4988 cc)

Bore X Stroke:

84 mm x 90 mm

Compression Ratio:

8.8:1

Cylinder Head Design:

SOHC, 4 valves per cylinder (2 per cylinder bank)

Horsepower Ps:

300 PS (296 bhp) at 5200 rpm

Torque Lb-Ft:

332 lb-ft (450 Nm) at 3900 rpm

Fuel Delivery:

Bosch Motronic M DME (Digital Engine Electronics) with multi-point fuel injection

Fuel Type:

Premium Unleaded Gasoline (91+ Octane)

ECU System:

Dual ECUs for each bank of cylinders

🔧 Transmission

Transmission Type:

4-speed Automatic

Transmission Model:

ZF 4HP24

Optional Transmission:

None (V12 models were exclusively automatic)

Gear Selection:

Standard P-R-N-D-3-2

📐 Dimensions

Wheelbase In:

117.4 inches

Length In:

203.5 inches

Width In:

74.4 inches

Height In:

55.4 inches

Curb Weight Lbs:

approx. 4300-4500 lbs

🛡️ Safety Features

Safety Standards Era:

Designed to meet safety standards of the late 1980s/early 1990s

ABS:

Standard Anti-lock Braking System (ABS)

Traction Control:

Optional ASC (Automatic Stability Control) on later models

Airbags:

Driver's airbag standard from 1990/1991 onwards; passenger airbag optional

Seatbelts:

3-point inertia-reel seatbelts front and rear

💡 Technology Features

Audio System:

High-quality sound system (e.g., premium BMW or Harman Kardon options), cassette player

Climate Control System:

Automatic dual-zone climate control

Cruise Control:

Standard electronic cruise control

Parking Sensors:

Optional rear park distance control (PDC)

Telematics:

Early analog cellular phone integration available on some models

🔧 Maintenance

Oil Change Interval Miles:

Every 7,500 - 10,000 miles or 12 months (check manual for specific conditions)

Spark Plug Interval Miles:

Refer to manual; typically significant intervals for V12 engines (e.g., 60,000+ miles)

Engine Oil Type:

API SG or higher, viscosity grade typically 5W-30 or 10W-40 (refer to owner's manual or manual for exact BMW specification)

Engine Oil Capacity Quarts:

Approx. 7.5 quarts (7.0 liters) with filter

Coolant Type:

BMW Blue or Green long-life antifreeze (Glysantin G05 or equivalent), mixed 50/50 with distilled water

Transmission Fluid Type:

ZF TE-ML 14 (or equivalent Dexron II/III, depending on specific ZF recommendation - verify with manual)

Brake Fluid Type:

DOT 4

Common Issues:

Cooling system leaks (especially plastic components), ignition coil failures, ABS sensor issues, fuel injector problems, wear on suspension bushings, window regulator failures, potential electrical gremlins due to age.

V12 Specifics:

Requires specialized knowledge for V12 maintenance due to dual ECUs, two fuel pumps, and complexity. Proper diagnosis is critical.

📚 Vehicle History

Heritage:

BMW has a long-standing reputation for building premium, driver-focused luxury vehicles with advanced engineering.

E32 Introduction:

The E32 generation replaced the E23 and was produced from 1986 to 1994. The 750iL, with the M70 V12, was introduced in 1987 as the flagship model.

Facelift:

A mild facelift occurred around 1992, with minor styling updates and technology enhancements.

Production Period:

1987-1994 (for the E32 750iL)

Manufacturing Location:

Dingolfing, Germany

🏆 Awards & Recognition

General Recognition:

The E32 7 Series, particularly the V12 variants, was widely regarded as a technological benchmark and a pinnacle of automotive engineering for its era.

Powertrain Accolade:

The M70 V12 engine was celebrated for its smoothness, power delivery, and refinement.