Target Audience:
BMW E32 735i owners, DIY mechanics, and automotive repair professionals.
Value Proposition:
Enables owners to perform their own electrical repairs and diagnostics, saving significant labor costs.
Uniqueness:
Specifically tailored to the E32 735i model, providing precise and detailed wiring information crucial for this generation of BMW.
Ease Of Use:
Easy-to-follow, step-by-step instructions and clear diagrams facilitate repairs for all skill levels.
Instant Access:
Instant download provides immediate access to critical repair information.
Cost Savings:
Empowers users to save money by performing DIY repairs.
Electrical System:
Comprehensive coverage of all electrical circuits and components.
Engine Management System:
Wiring for ECU, sensors, actuators, fuel injection, and ignition.
Lighting System:
Headlights, taillights, interior lighting, fog lights, and auxiliary lighting.
Instrument Cluster:
Wiring for gauges, warning lights, and information displays.
Power Windows And Locks:
Circuits for all power window regulators, central locking system, and mirrors.
Climate Control System:
Wiring for HVAC blower, climate control module, and sensors.
Audio System:
Wiring for factory radio, amplifier, speakers, and antenna.
Safety Systems:
Wiring for ABS (if equipped), airbags (if equipped), and seatbelt pretensioners.
Auxiliary Systems:
Wipers, horn, sunroof, cruise control, and other accessories.
Troubleshooting:
Identifies common electrical faults and provides diagnostic guidance through circuit tracing.
Component Identification:
Locates specific electrical components and their associated wiring.
Wire Tracing:
Detailed wire colors, pinouts, and routing for accurate tracing.
Connector Diagrams:
Illustrations of various connectors and their pin assignments.
Fuse And Relay Identification:
Location and function of all fuses and relays.
Depth:
Detailed electrical schematics, including power distribution, ground points, and signal paths.
Engine Type:
Naturally Aspirated Inline-6 (I6)
Displacement:
3.430 cc (3.4 Liters)
Horsepower Est:
Approximately 208 hp @ 5700 rpm (varies slightly by market/year)
Torque Est:
Approximately 225 lb-ft @ 4000 rpm (varies slightly by market/year)
Fuel Delivery:
Bosch Motronic electronic fuel injection (EFI)
Fuel Type:
Unleaded Gasoline
Ignition System:
Distributorless Ignition System (DIS) via Motronic
Crash Test Data:
Limited public crash test data available for this era; relied on robust chassis engineering and passive safety features.
ABS:
Anti-lock Braking System (ABS) was standard or optional depending on year and market.
Airbags:
Driver-side airbag became standard during the E32 production run.
Body Structure:
Reinforced safety cage, crumple zones, and side-impact protection.
Audio System:
Factory cassette player with optional CD changer, often featuring premium sound systems by brands like Nakamichi or Harman Kardon.
Cruise Control:
Electronic cruise control system.
Parking Assistance:
Rear parking sensors (Park Distance Control) became available on later models.
Original Connectivity:
Limited to factory-installed radio and communication systems of the era.
Oil Change Interval:
Typically every 7,500-10,000 miles or 12 months, depending on driving conditions and oil used.
Coolant Flush Interval:
Recommended every 2-3 years or 30,000 miles.
Spark Plug Replacement:
Around 60,000 miles for copper plugs, potentially longer for platinum/iridium if applicable to later models.
Engine Oil Type:
SAE 5W-30 or 5W-40 synthetic engine oil meeting BMW LL-98 specifications (consult owner's manual for precise spec).
Coolant Type:
BMW Blue Antifreeze/Coolant (G48 or equivalent) mixed with distilled water at 50/50.
Transmission Fluid Type Auto:
Dexron III or equivalent (e.g., ZF Lifeguardfluid 5)
Transmission Fluid Type Manual:
SAE 75W-90 synthetic gear oil
Electrical Gremlins:
Common issues include failing O-ring seals in the wiring harness, deteriorating ABS sensors, and door lock actuator problems, all addressed by detailed wiring diagrams.
Cooling System:
Overheating due to plastic coolant pipe failures or clogged radiators, requiring electrical checks of the cooling fan system.
Fuel System:
Potential issues with fuel pump, fuel pressure regulator, or injector seals, with wiring diagrams essential for diagnosis.
Brand Legacy:
BMW has a long-standing reputation for producing luxury sedans with sophisticated engineering and a focus on driving dynamics.
E32 Introduction:
The E32 chassis replaced the E23 7 Series and introduced more advanced technology and aerodynamic design.
E32 Period:
Produced from 1986 to 1994, with the 735i being a core model throughout its lifecycle.
Manufacturing Location:
Germany
