🏷️ Basic Information Identification Make: BMW Model: 635CSi / M6 Year Covered By Manual: 1988 Variant Covered By Manual: 635CSi, M6 Codes Chassis Code: E24 👋 Introduction Market Position Vehicle Segment: Luxury Grand Tourer / Sports Coupe Competitive Analysis Competitors 1988: Porsche 944, Mercedes-Benz SEC, Jaguar XJ-S Key Features Brand Philosophy: 'The Ultimate Driving Machine', blending performance, luxury, and sophisticated engineering. Manual Purpose Target Audience: BMW owners, DIY mechanics, independent workshops Manual Value Proposition Cost Saving: Enables significant cost savings by empowering owners and technicians to perform repairs themselves. Manual Accessibility Skill Level: Accessible with basic mechanical knowledge, due to step-by-step explanations and illustrations. 📋 Manual Details Coverage Areas Primary Coverage: Electrical Systems and Troubleshooting Secondary Coverage: Power Distribution, Component Locations, Wiring Diagrams Page Count Estimated Page Count: 300+ Manual Type Type: Electrical Troubleshooting Manual / Service Manual Language Language: English Format Format: PDF (assumed digital delivery) 📖 Manual Coverage Systems Covered Power Management: Power Distribution Charts, Fuse Charts, Fuse Details, Ground Distribution Engine Management: Engine Control System (L-Jetronic/Motronic for 635CSi, S38 ECU for M6), Data Link (OBD I) Starting And Charging: Start System, Charging System Drivetrain Electronics Transmission Control: Electronic Transmission Control (if applicable to specific models covered) Safety Systems Restraint System: Supplemental Restraint System (SRS) - Airbag (if equipped) Traction Control: Slip Control ABS (Anti-lock Braking System) Comfort And Convenience Mirrors: Power Mirrors Locking System: Central Locking Module Windows: Power Windows Seats: Power Seats, Heated Seats Sunroof: Power Sun Roof Horns: Horn System Wiper Washer: Wiper/Washer Module, Headlight Washer, Windshield Washer Jet Heaters Instrumentation Cluster: Instrument Cluster Clock: Multi-Function Clock Lighting Controls: Light Switch Details Exterior Front: Headlights, Fog Lights, Turn/Hazard Lights Exterior Rear Side: Park/Tail/Underhood Lights, License Plate/Luggage Compartment Lights, Back-Up Lights, Brake Lights Interior: Interior Lights, Glove Box Light, Cassette Box Ashtray Lights, Charging Socket Body Electronics Crash System: Crash Control Module Climate Control: Park/Ventilation with HKR (Heated Control Relay?), Rear Window Defogger, Integrated Climate Regulation Audio Visual Audio: Radio/CD Player, Radio/HiFi System Communication Telephone: Cellular Telephone System Driver Assistance Cruise Control: Cruise Control (Tempomat) Security Anti Theft: Anti-Theft System Information Systems Onboard Computer: On-Board Computer Component Locations Component Identification: Component Location Chart, Component Location Views Wiring Diagrams Splice Locations: Splice Location Views Connector Identification: Connector Views Procedures Included Troubleshooting Methodology: Step-by-step explanations, diagnostic flowcharts (implied by electrical troubleshooting) Technical Depth Diagnostic Level: Advanced Electrical Diagnostics, Fault Finding Repair Procedures: Detailed repair instructions for electrical components and systems Information Types: Illustrations, Diagrams, Technical Specifications, Depth Illustrations 📊 Manual Specifications File Format Searchable Text: Yes (typical for professionally produced PDFs) Print Quality Image Resolution: High (essential for diagrams and illustrations) Binding Type Binding: N/A (Digital PDF) Paper Type Paper Quality: N/A (Digital PDF) ⚙️ Engine Specifications Primary Engine 635Csi Engine Code: M30B34 Displacement: 3.4 Liters (3430 cc) Configuration: Inline 6-Cylinder, SOHC Horsepower 635Csi: 218 hp @ 5,500 rpm (Euro Spec), approx. 182-190 hp (US Spec) Torque 635Csi: 224 lb-ft @ 4,000 rpm (Euro Spec), approx. 214 lb-ft (US Spec) Primary Engine M6 Engine Code: S38B35 Displacement: 3.5 Liters (3453 cc) Configuration: Inline 6-Cylinder, DOHC (Double Overhead Camshafts) Horsepower M6: 256 hp @ 6,500 rpm (Euro Spec), 210 hp (US Spec - ECE emissions) / 205 hp (US Spec - EPA) Torque M6: 243 lb-ft @ 4,500 rpm (Euro Spec), 220 lb-ft (US Spec - ECE) / 215 lb-ft (US Spec - EPA) Fuel System Fuel Injection 635Csi: Bosch L-Jetronic (later Motronic) Fuel Injection M6: Bosch Motronic DME (Digital Engine Electronics) Fuel Type Fuel Requirement: Premium Unleaded Gasoline (91+ Octane) 🔧 Transmission Standard 635Csi Type 635Csi: Getrag 4-Speed Automatic (ZF 4HP22) Optional 635Csi Type 635Csi: Getrag 5-Speed Manual (G265) Standard M6 Type M6: Getrag 5-Speed Manual (G280) Features Clutch Type: Single Dry Plate (Manual) Fluid Specification Automatic Transmission Fluid: Dexron II (or equivalent, consult specific BMW specs) Manual Transmission Fluid: SAE 75W-90 Synthetic Gear Oil (or equivalent, consult specific BMW specs) 📐 Dimensions Exterior Length: 191.1 in (4854 mm) Width: 70.5 in (1791 mm) Height: 53.2 in (1351 mm) Wheelbase Wheelbase: 103.5 in (2629 mm) Weights Curb Weight 635Csi: 3,450 - 3,600 lbs (1565 - 1633 kg) Curb Weight M6: 3,600 - 3,750 lbs (1633 - 1701 kg) Gross Vehicle Weight Rating: Approx. 4,400 lbs (2000 kg) 🛡️ Safety Features Ratings Crash Test Data: NHTSA/IIHS data from this era is limited, but the E24 chassis was known for robust construction. Active Features Braking: Four-wheel disc brakes with ABS (Anti-lock Braking System) Steering: Power-assisted recirculating ball steering Passive Features Airbags: Driver-side airbag (optional, depending on market and build date) Seatbelts: Three-point inertia-reel seatbelts with front pretensioners Chassis Construction: Reinforced safety cage, crumple zones 💡 Technology Features Infotainment Audio System Options: BMW Bavaria C/C II, C III, or premium HiFi systems with cassette player, optional CD changer. Driver Assistance ABS System: Bosch ABS II system, providing anti-lock braking capability. Connectivity...