Segment:
Full-size luxury sedan
Target Audience:
Discerning luxury car buyers seeking performance, comfort, and advanced technology.
Key Competitors:
Mercedes-Benz S-Class (W140), Lexus LS 400, Jaguar XJ.
Engine Offering:
Exclusive V12 engine for the 750iL, representing the pinnacle of BMW's engineering for the era.
Chassis Development:
Based on the E38 platform, known for its advanced chassis dynamics and refined ride.
Luxury Appointments:
Premium interior materials, advanced climate control, and sophisticated electronic features for its time.
Long Wheelbase:
The 'L' designation signifies the long-wheelbase version, providing enhanced rear passenger legroom and comfort.
Engine Mechanical:
Detailed repair and overhaul procedures for the M70 V12 engine.
Engine Management:
Diagnosis and repair of the Motronic M1.3 engine management system.
Fuel System:
Fuel injection system, fuel pump, fuel lines, evaporative emission control.
Cooling System:
Radiator, coolant pump, thermostat, cooling fan, system capacity and fluid type.
Exhaust System:
Exhaust manifolds, catalytic converters, mufflers, emissions control.
Transmission Automatic:
Diagnosis, repair, and overhaul of the ZF 4HP24 automatic transmission.
Drivetrain:
Driveshaft, CV joints, differential, rear axle assembly.
Suspension:
Front and rear suspension components, alignment specifications, self-leveling rear suspension details.
Steering:
Power steering system, steering rack, steering column.
Brakes:
Hydraulic system, ABS (Anti-lock Braking System), brake disc and pad replacement, bleeding procedures.
Electrical System:
Wiring diagrams, component locations, diagnostic procedures for all electrical systems.
Lighting:
Headlights, taillights, interior lighting, bulb specifications.
Climate Control:
HVAC system, automatic climate control diagnosis and repair, refrigerant specifications.
Body And Chassis:
Body panels, doors, glass, seals, chassis components, corrosion protection.
Interior:
Upholstery, dashboard, trim panels, seat adjustments, interior lighting.
Safety Systems:
Airbag system (SRS), seat belt mechanisms, safety structures.
Routine Maintenance:
Oil changes, filter replacements, fluid checks and top-offs, spark plug replacement.
Scheduled Maintenance:
Detailed service intervals and required procedures as per BMW factory recommendations.
Troubleshooting:
Systematic diagnostic procedures for common and uncommon faults.
Repair Procedures:
Step-by-step instructions for component replacement and repair across all vehicle systems.
Overhaul Instructions:
Complete rebuild procedures for major components like the engine and transmission.
Specifications Data:
Torque specifications, clearances, fluid capacities, electrical values.
Wiring Diagrams:
Comprehensive and detailed electrical schematics for all vehicle systems.
Diagnostic Trouble Codes:
Information on reading and interpreting diagnostic codes (DTCs).
Depth Level:
Full factory depth, suitable for professional technicians and advanced DIY enthusiasts.
Diagnostic Capabilities:
Advanced diagnostics for engine management, ABS, climate control, and other electronic systems.
Component Rebuild:
Detailed instructions for the complete disassembly, inspection, repair, and reassembly of major components.
Engine Configuration:
V12
Displacement:
4.988 cc (5.0 Liters)
Bore X Stroke:
84.0 mm x 75.0 mm
Horsepower:
300 PS (296 hp / 221 kW) at 5200 RPM
Torque:
470 Nm (347 lb-ft) at 3900 RPM
Induction:
Multi-point fuel injection (Bosch Motronic M1.3)
Fuel Type:
Premium Unleaded Gasoline (91+ Octane)
Ignition Type:
Distributorless ignition (two distributors, four coils)
Coolant Capacity:
Approximately 12.0 Liters (exact specification in manual)
Coolant Type:
BMW Blue Antifreeze (Glysantin G05 or equivalent, silicate-free)
Audio System:
High-quality audio system, often with CD changer option.
Navigation:
Optional BMW Professional Navigation system (early generation GPS).
Cruise Control:
Standard electronic cruise control.
Park Assist:
Optional parking sensors (BMW Park Distance Control - PDC).
Telematics:
Optional telematics systems for emergency services or vehicle tracking were available.
Seats:
Multi-way power adjustable front seats with memory, heated seats often standard or optional.
Windows Mirrors:
Power windows, power mirrors, often with auto-dimming rearview mirror.
Oil Change Interval:
Typically every 7,500 - 10,000 miles or 12-18 months (depending on driving conditions and oil quality, consult manual for precise intervals and BMW's Condition Based Service - CBS).
Spark Plug Replacement:
Recommended at ~60,000 miles (specific to M70 V12, often Bosch Platinum or similar long-life plugs).
Transmission Fluid Service:
BMW typically recommended lifetime fluid for this era, but many enthusiasts and technicians recommend flushing/changing every 60,000 - 100,000 miles. Manual will specify BMW's recommendation.
Engine Oil Specification:
BMW Longlife-98 (LL-98) or LL-01 approved synthetic oil, typically SAE 5W-30 or 5W-40. Exact viscosity and spec should be confirmed in the manual.
Engine Oil Capacity:
Approximately 7.5 Liters (with filter change).
Brake Fluid Specification:
DOT 4 (or BMW Super Dot 4), replaced every 2 years.
Power Steering Fluid:
BMW Power Steering Fluid (or CHF 11S, manual will specify)
Engine Management Complexity:
The M70's dual Motronic systems can be complex to diagnose; proper scan tools and knowledge are crucial.
Cooling System Maintenance:
Plastic components in the cooling system can become brittle over time, leading to leaks. Regular inspection is recommended.
Throttle Body Issues:
Electronic throttle body actuators or connections can sometimes cause drivability issues.
Suspected Wear Items:
Age-related wear on suspension bushings, fuel lines, and O-rings is common.
Brand History:
Bayerische Motoren Werke AG (BMW) is a German luxury vehicle manufacturer founded in 1916, known for its performance-oriented vehicles and engineering excellence.
E38 Generation:
The 1994 750iL is part of the E38 generation of the BMW 7 Series, which was produced from 1994 to 2001. It succeeded the E32 generation.
V12 Development:
The M70 V12 engine was originally introduced in the E32 750i/iL, representing BMW's flagship powertrain for the luxury segment.
Production Period:
1994-2001 (E38 Generation)
Manufacturing Location:
Dingolfing, Germany (primary)