Target Audience:
DIY enthusiasts and professional mechanics working on E34 generation BMW 5-series and M5 models.
Advantage:
Provides professional-grade information that mirrors what is used by authorized BMW garages, enabling significant cost savings for repairs.
Content Highlights:
Extensive electrical system coverage, detailed diagrams, and step-by-step instructions.
Covered Production Dates:
September 1990 to July 1991
Type:
Electrical Troubleshooting Manual / Repair Manual
Format:
Likely Printed / Digital (PDF) - not explicitly stated, but common for this type of manual.
Estimated Pages:
Likely 300-600+ pages given the extensive system coverage and detailed diagrams for electrical troubleshooting.
Electrical Systems:
Comprehensive coverage of all electrical systems including power distribution, fuses, grounds, data link, engine control, charging, starting, transmission control, SRS, ABS, power mirrors, central locking, power windows, power seats, heated seats, sunroof, horn, wiper/washer systems, headlight washers, instrument cluster, clock, lighting, crash control, climate control, radio/CD, hi-fi, telephone, cruise control, anti-theft, and onboard computer.
Lighting Systems:
Detailed coverage of Headlights, Fog lights, Turn/Hazard lights, Park/Tail/Underhood lights, License plate/Luggage compartment lights, Back up lights, Brake Lights, Interior Lights, Glove box light, Cassette box/Ashtray lights, and Charging socket.
Comfort Systems:
Power Mirrors, Central Locking Module, Power Windows, Power Seats, Heated Seats, Power Sun Roof, Wiper/Washer Module, Headlight Washer, Windshield Washer Jet Heaters, Rear Window Defogger, Park Ventilation, and Integrated Climate Regulation are all detailed.
Engine Management Systems:
Covers Engine Control System, Charging System, and Start system in detail.
Troubleshooting:
Detailed step-by-step troubleshooting procedures for all electrical faults.
Repair:
Instructions for component repair and replacement, including wiring harness repair.
Maintenance:
Basic electrical system checks and maintenance procedures.
Component Location:
Includes 'Component Location Chart', 'Component Location Views', and 'Splice Location views' for efficient troubleshooting and repair.
Connector Identification:
'Connector views' are provided, essential for understanding wiring harnesses and connections.
Depth:
In-depth technical information, diagrams, illustrations, and specifications necessary for 100% condition repair. Suitable for users with basic mechanical knowledge.
Searchability:
If digital, likely searchable text for quick information retrieval.
Quality:
High-quality with clear illustrations and diagrams, as expected from OEM or reputable aftermarket manuals.
Binding:
If printed, typically spiral-bound or perfect-bound for durability in a workshop environment.
Paper:
Durable, possibly laminated or heavy-weight paper for workshop use.
525I Engine:
M50B25 - 2.5L Inline-6, DOHC, 24 Valves. Power output approx. 189 hp (141 kW) at 5,800 rpm, Torque approx. 181 lb-ft (245 Nm) at 4,200 rpm.
535I Engine:
M30B35 - 3.5L Inline-6, SOHC, 12 Valves. Power output approx. 208 hp (155 kW) at 5,700 rpm, Torque approx. 225 lb-ft (305 Nm) at 4,000 rpm.
M5 Engine:
S38B36 - 3.6L Inline-6, DOHC, 24 Valves (with individual throttle bodies). Power output approx. 310 hp (232 kW) at 6,900 rpm, Torque approx. 266 lb-ft (360 Nm) at 4,750 rpm.
Fuel Injection:
Bosch Motronic engine management system with multi-point fuel injection.
ECU Details:
Covered within the Engine Control System section of the manual.
0 60 Mph 525I:
Approx. 7.5 - 8.5 seconds (manual transmission).
0 60 Mph 535I:
Approx. 7.0 - 7.8 seconds (manual transmission).
0 60 Mph M5:
Approx. 5.4 - 5.9 seconds.
525I Transmission:
5-speed manual (Getrag 260/5).
535I Transmission:
5-speed manual (Getrag 260).
M5 Transmission:
5-speed manual (Getrag 280/5).
525I Optional Transmission:
4-speed automatic (ZF 4HP-22 EH).
535I Optional Transmission:
4-speed automatic (ZF 4HP-22 EH).
Electronic Control:
Manual details electronic transmission control systems for automatic variants.
Wheelbase:
Approx. 111.7 inches (2837 mm).
Length:
Approx. 191.0 inches (4851 mm).
Width:
Approx. 70.5 inches (1791 mm).
Height:
Approx. 56.0 inches (1422 mm).
Curb Weight 525I:
Approx. 3500-3700 lbs (1588-1678 kg).
Curb Weight 535I:
Approx. 3600-3800 lbs (1633-1724 kg).
Curb Weight M5:
Approx. 3800-3950 lbs (1724-1792 kg).
Radio Hifi Options:
The manual details the electrical systems for Radio/CD player and Radio/Hi-Fi options, indicating extensive diagnostic coverage for these components.
Instrument Cluster:
Detailed coverage of the instrument cluster's electrical functions and diagnostics.
Cruise Control:
'Cruise Control tempomat' is listed, with electrical troubleshooting covered.
Cellular Telephone:
Early integrated cellular telephone systems are covered, reflecting the technology of the era. Details for this system are included.
Obc Functionality:
The 'On Board Computer' system is explicitly covered, allowing for diagnostics and understanding of its electrical functions.
Oil Change Interval:
Typically every 7,500-10,000 miles or annually, depending on driving conditions. The manual's comprehensive nature implies it would reference these intervals.
Engine Oil Spec:
BMW recommends synthetic oil, typically 5W-30 or 5W-40, meeting specific BMW LL specifications (e.g., LL-98 for earlier models). Specifics would be in the manual.
Coolant Spec:
BMW Blue or Green coolant (ethylene glycol based) in a 50/50 mix with distilled water. Manual would specify exact type.
Transmission Fluid Auto:
Dexron III (or equivalent specification) for the ZF 4HP-22 EH automatic transmission. Manual would list precise BMW part number.
Brake Fluid Spec:
DOT 4 brake fluid. Manual would confirm.
Power Steering Fluid:
BMW approved hydraulic fluid or Dexron III equivalent. Manual would specify exact type.
Electrical Common Failures:
Common E34 electrical issues include failing dashboard pixels, intermittent headlight issues, blower motor resistor failure, and wiring harness degradation due to age. This manual directly addresses these.
Engine Control Common Failures:
MAF sensor issues, EPROM failures, and coolant temperature sensor issues can affect engine performance. Covered by the 'Engine Control System' section.
Bmw Legacy:
BMW's reputation for building driver-focused luxury sedans with excellent engineering.
E34 Generation:
The E34 generation (1987-1996) represented a significant evolution in BMW's mid-size executive sedan, blending performance, luxury, and advanced technology for its time.
Production Period Covered:
Manual specifically covers production from 9/90 to 7/91, encompassing early versions of the M50 engine in the 525i.
