The BMW 7-series E23 1983 Service and Repair Manual is a comprehensive resource for maintaining, servicing, diagnosing, and repairing your 1983 BMW 7-series E23. This manual provides the same detailed information used by technicians at authorized dealerships, offering a complete understanding of your vehicle's systems. It includes step-by-step instructions, diagrams, illustrations, wiring schematics, and specifications for all aspects of your car. You'll find detailed sections covering everything from routine maintenance to complex repairs, including: * **Engine:** Detailed information on the engine, including specifications, operation, troubleshooting, and repair procedures for every component. * **Control System:** Demystify the intricate workings of the electronic control systems that manage your engine, transmission, and other vital functions. * **Fuel Service Specifications:** Precise information on fuel system components, maintenance requirements, and troubleshooting. * **Emission Control:** Understand the intricacies of your car's emission control system and how to maintain its efficiency. * **Intake Exhaust Cooling:** Comprehensive information on the intake and exhaust systems, including cooling system components and procedures. * **Lube:** Specific guidelines on lubricants, including recommended types, capacities, and replacement intervals. * **Ignition Starting Charging:** Detailed descriptions of the ignition, starting, and charging systems, including troubleshooting and repair procedures. * **Auto Transmission Clutch:** Learn about the operation, maintenance, and repair of your automatic transmission and clutch system. * **Manual Transmission:** Covers the manual transmission, including shift mechanisms, troubleshooting, and repair procedures. * **Transfer Propeller Shaft:** Get detailed information on the transfer case, propeller shaft, and related components. * **Drive Shaft:** In-depth coverage of the drive shafts, including component identification, maintenance, and repair. * **Differential:** Detailed information on your car's differential system, including identification, operation, and repair procedures. * **Axle Suspension:** Comprehensive information on the axles and suspension system, including specifications, maintenance, and repair. * **Tire & Wheel:** Covers tire and wheel specifications, maintenance, and repair procedures. * **Brake Control:** Understand the operation of the brake control system, including hydraulics and electronic components. * **Brake:** Detailed information on brake system components, maintenance, and repair procedures. * **Parking Brake:** Covers the parking brake system, including operation, adjustment, and repair. * **Steering Column:** Comprehensive information on the steering column, including components, maintenance, and repair. * **Power Steering:** Detailed coverage of the power steering system, including operation, troubleshooting, and repair procedures. * **Air Condition:** Learn about the air conditioning system, including components, operation, and repair procedures. * **Suppl Restraint System:** Covers the supplemental restraint system, including airbags, seatbelts, and related components. * **Seat Belt:** Detailed information on the seat belt system, including operation, maintenance, and repair procedures. * **Engine Immobilizer:** Understand the operation and maintenance of the engine immobilizer system. * **Cruise Control:** Covers the cruise control system, including operation, troubleshooting, and repair procedures. * **Wiper & Washer:** Detailed information on the wiper and washer system, including components, maintenance, and repair procedures. * **Door Lock:** Covers the door lock system, including operation, troubleshooting, and repair procedures. * **Meter Audio/Visual:** Learn about the instrument cluster, gauges, and audio/visual systems. * **Horn:** Provides information on the horn system, including operation, troubleshooting, and repair procedures. * **Windshield/Glass Mirror:** Covers the windshield, glass, and mirror systems, including maintenance and repair. * **Instrument Panel:** Detailed information on the instrument panel, including components, maintenance, and repair procedures. * **Seat:** Covers the seat systems, including operation, adjustments, and repair procedures. * **Engine Hood/ Door:** Information on the engine hood and door systems, including operation, maintenance, and repair procedures. * **Exterior & Interior:** Covers the exterior and interior components, including maintenance and repair procedures. * **Electrical:** Comprehensive coverage of the car's electrical system, including wiring diagrams, troubleshooting, and repair procedures. * **Multiplex/Can Communication:** Information on the multiplex and CAN communication systems, including operation, troubleshooting, and repair. This manual will empower you to understand and maintain your BMW 7-series E23, allowing you to perform basic maintenance and even tackle more complex repairs.

The BMW 7-series E23, launched in 1977 and produced until 1986, marked the beginning of BMW's foray into the luxury sedan market. This first generation of the 7-series was a pivotal model for the brand, establishing a reputation for both performance and comfort. The E23 offered a range of powerful engines, starting with the 3.0-liter inline-six M20 engine and culminating in the 3.5-liter inline-six M30 engine. The top-of-the-line 745i, later joined by the 735i, boasted a potent 3.5-liter V8 engine capable of reaching 148 mph. The E23 also featured technological advancements like the first fuel-injected BMW engine, the M20, and an innovative suspension system that provided a smooth and controlled ride. Despite its size, the E23 remained relatively agile thanks to its precise steering and responsive handling, making it a desirable vehicle for both everyday driving and long-distance journeys. The E23's luxurious interior set the stage for future 7-series models. With plush leather upholstery, wood trim, and a focus on passenger comfort, the E23 provided a premium experience. It was also the first BMW to introduce the iconic "Hofmeister kink" on the C-pillar, a design element that has become synonymous with the brand. While the E23 paved the way for the future of the 7-series, it was also a true classic in its own right. Its sleek and elegant design, coupled with its powerful performance and luxurious interior, made it a highly sought-after vehicle. The E23's legacy lives on, inspiring both BMW's future designs and a passionate community of enthusiasts who appreciate the car's history and heritage.