This comprehensive BMW E24 635CSI 6 Series 1989 Electronic Troubleshooting Manual is designed to be an invaluable resource for technicians, mechanics, and anyone seeking to understand and repair this classic BMW model. It contains a wealth of technical information, organized for easy navigation and use.

The manual delves into a wide range of systems, providing detailed explanations and troubleshooting guidance. Topics covered include:

* **General Maintenance:** Learn about necessary maintenance routines and procedures to keep your BMW running smoothly.
* **Troubleshooting:** Diagnose and resolve common issues, using the manual's detailed descriptions and diagnostic charts.
* **Engine Service/Repair:** Gain an in-depth understanding of the engine, including its components, operation, and repair procedures.
* **Transmission Service/Repair:** Acquire knowledge of the transmission, including its operation, maintenance, and repair techniques.
* **Brake System:** Learn the intricacies of the brake system, covering components, operation, and troubleshooting tips.
* **Wiring Diagram:** Access the detailed wiring diagrams, providing a clear visual representation of the electrical system.
* **Electrical System:** Understand the complex electrical system, from basic components to troubleshooting and repair.
* **Suspension:** Dive into the suspension system, learning about its components, operation, and common problems.
* **Periodic Lubrication:** Identify lubrication points and understand the importance of regular lubrication for optimal performance.
* **Steering:** Become familiar with the steering system, including its components, operation, and maintenance requirements.
* **Cooling System:** Learn about the cooling system, covering its components, operation, and potential problems.
* **Fuel Injection:** Understand how the fuel injection system operates, including its components and troubleshooting steps.
* **Fuel System:** Gain knowledge of the overall fuel system, covering fuel lines, storage, and potential issues.
* **Emission System:** Familiarize yourself with the emission control system, including its components, operation, and maintenance practices.
* **Heater/Air Conditioner:** Understand the heating and air conditioning systems, covering components, operation, and troubleshooting techniques.
* **Engine Control System:** Delve into the complex Engine Control System, learning its operation and troubleshooting strategies.
* **Chassis/Body:** Acquire knowledge of the chassis and body construction, including common problems and repair methods.
* **Restraint System:** Understand the safety features of the restraint system, including maintenance and repair procedures.
* **Interior:** Get familiar with the interior components, including operation, common problems, and repair techniques.
* **Differential/Drive:** Gain detailed information about the differential and drive system, covering operation, maintenance, and potential issues.
* **Axle:** Become well-versed in the axle system, its operation, maintenance, and possible problems.

This manual serves as a comprehensive resource to help you successfully maintain and repair your BMW E24 635CSI.

The BMW E24 635CSi, a legendary coupe produced from 1976 to 1989, embodies the epitome of German engineering and design. It was the top-of-the-line model in BMW's 6 Series lineup, renowned for its sleek, aerodynamic design, powerful engine, and luxurious interior. The 635CSi, introduced in 1983, boasted a 3.4-liter, inline-six engine, delivering an impressive 218 horsepower and 210 lb-ft of torque. This engine, coupled with a five-speed manual or four-speed automatic transmission, propelled the 635CSi to a top speed of 140 mph and a 0-60 mph time of around 7.2 seconds. The car featured a sophisticated independent suspension system with MacPherson struts in the front and a semi-trailing arm setup in the rear, providing exceptional handling and roadholding.

The 635CSi's interior was just as impressive as its performance. High-quality leather upholstery, wood trim, and a comprehensive instrument cluster created a luxurious and driver-focused cabin. The car came standard with power windows, power locks, and air conditioning, further enhancing its comfort and convenience. However, the 635CSi was not without its quirks. Its complex electrical system, with its multitude of sensors and electronic modules, could be prone to occasional issues. This is where the 1989 Electronic TROUBLESHOOTING Manual comes in handy. This manual provides comprehensive diagnostic information, electrical schematics, and troubleshooting procedures, helping mechanics and owners identify and rectify any electrical malfunctions in the 635CSi. With the help of this manual, even complex electrical issues can be tackled effectively, ensuring that this legendary coupe continues to provide its owners with a thrilling and enjoyable driving experience.