🏷️ Basic Information

Make:

BMW

Model:

7 Series (E32)

Model Variant:

735iL, 750iL

Year:

1991-1992

Chassis Code:

E32

Platform Generation:

E32

👋 Introduction

Target Audience:

BMW E32 owners seeking to perform their own electrical diagnostics and repairs, independent workshops, and automotive technicians.

Manual Value Proposition:

Provides OEM-level diagnostic and repair information, saving significant costs compared to dealership service. Offers detailed schematics and explanations not found in generic repair manuals.

Manual Utility:

Comprehensive electrical system coverage, detailed diagrams, step-by-step instructions, and technical specifications for diagnosis and repair.

📋 Manual Details

Manual Scope:

Electrical Troubleshooting

Estimated Page Count:

Likely 200-400 pages (typical for detailed electrical manuals of this era)

Manual Classification:

Service Manual / Technical Repair Manual

Language:

English (implied by typical market for such manuals, though original may be German)

Delivery Format:

Physical Book (implied by description of sending a manual)

📖 Manual Coverage

Electrical Systems:

Power Distribution, Fuses, Ground Distribution, Data Link, Engine Control, Charging System, Starting System, Electronic Transmission Control, Supplemental Restraint System (SRS), Slip Control (ABS), Power Mirrors, Central Locking, Power Windows, Power Seats, Heated Seats, Power Sunroof, Horn, Wiper/Washer System, Headlight Washers, Windshield Washer Jet Heaters, Instrument Cluster, Multi-Function Clock, Lighting Systems (Headlights, Fog Lights, Turn Hazards, Parking/Tail/Underhood, License Plate, Luggage Compartment, Backup, Brake, Interior, Glove Box, Ashtray, Charging Socket), Crash Control Module, Park/Ventilation (HKR), Rear Window Defogger, Climate Control, Audio Systems (Radio/CD, Radio/Hi-Fi), Cellular Telephone, Cruise Control, Anti-Theft System, On-Board Computer.

Troubleshooting Procedures:

Step-by-step troubleshooting guides for all covered electrical systems, diagnostic procedures, component testing, wiring harness tracing, fault code interpretation (where applicable for the era).

Diagnostic Level:

Advanced Diagnostic and Repair. Covers in-depth technical information and detailed diagrams required for professional-level repairs.

📊 Manual Specifications

Binding Type:

Likely perfect bound or saddle-stitched (typical for professional service manuals)

Paper Type:

High-quality, durable paper suitable for workshop use, often with coated pages for diagrams.

⚙️ Engine Specifications

Engine Type 735Il:

Naturally Aspirated V8

Engine Displacement 735Il:

3.5 Liters (3498 cc)

Engine Code 735Il:

M30B35 (inline-6, common misconception for V8 models of this era, but 735i in E32 used the M30 inline-6)

Engine Power 735Il:

Approx. 208-211 hp @ 5700 rpm

Engine Torque 735Il:

Approx. 224-230 lb-ft @ 4000 rpm

Engine Type 750Il:

Naturally Aspirated V12

Engine Displacement 750Il:

5.0 Liters (4988 cc)

Engine Code 750Il:

M70B50

Engine Power 750Il:

Approx. 295-300 hp @ 5200 rpm

Engine Torque 750Il:

Approx. 332-335 lb-ft @ 4100 rpm

Fuel Injection Type:

Bosch Motronic (specific version varies by engine and year, e.g., Motronic M1.2 for M30, M1.7 for M70)

🔧 Transmission

Transmission Type 735Il:

4-speed Automatic (ZF 4HP22)

Transmission Type 750Il:

4-speed Automatic (ZF 4HP24)

Transmission Control:

Electronic Transmission Control (EGS)

📐 Dimensions

Wheelbase E32 Long Wheelbase:

117.4 inches (2982 mm)

Length E32 Long Wheelbase:

199.9 inches (5078 mm)

Curb Weight 735Il:

Approx. 3900-4100 lbs (1769-1860 kg)

Curb Weight 750Il:

Approx. 4200-4400 lbs (1905-1996 kg)

🛡️ Safety Features

ABS System:

Bosch ABS (Anti-lock Braking System)

Airbags:

Driver airbag (standard in later models and for export, optional on earlier E32s)

Srs System:

Supplemental Restraint System (SRS)

💡 Technology Features

Audio System Options:

Factory AM/FM radio with cassette player, optional CD player, and upgraded Hi-Fi sound systems (e.g., with amplifier and premium speakers).

Cruise Control:

Standard on most models, electronically controlled (Tempomat).

On Board Computer:

Standard or optional OBC providing basic vehicle status, fuel consumption, and range information.

Climate Control System:

Integrated automatic climate control (often referred to as 'Klimatronik' or similar) with dual-zone capabilities.

Power Adjustable Seats:

Standard, with memory functions for driver's seat.

🔧 Maintenance

Oil Change Interval:

Typically every 7,500 - 10,000 miles or annually, depending on driving conditions (refer to specific BMW service recommendations for the era).

Engine Oil Type 735Il:

Synthetic 5W-30 or 5W-40 (e.g., BMW High Performance Synthetic)

Transmission Fluid Type:

ATF Dexron II (ZF 4HP22/24)

Common Electrical Issues:

Aging wiring insulation (especially in the engine bay), failing door lock actuators, issues with window regulators, climate control unit faults, instrument cluster pixel degradation, SRS warning lights due to sensor or module issues.

Common Mechanical Issues Requiring Electrical Diag:

Engine misfires potentially related to Motronic system, ABS sensor failures, traction control issues, starter solenoid faults.

📚 Vehicle History

Bmw Philosophy:

Reputation for 'The Ultimate Driving Machine', blending luxury with performance and engineering excellence.

E32 Introduction:

The E32 generation of the 7 Series was introduced in 1986 and represented a significant technological and design advancement over its E23 predecessor.

Production Years:

1986-1994

Manufacturing Location:

Dingolfing, Germany

🏆 Awards & Recognition

Automotive Press Awards:

While specific 'awards' are less common for individual model years, the E32 7 Series was consistently praised by automotive journalists for its sophisticated engineering, luxurious interior, and dynamic capabilities, often being compared favorably to its Mercedes-Benz S-Class rival.