This comprehensive 1986 BMW 7 Series (E23) Service and Repair Manual is meticulously designed to be your ultimate guide for maintaining, servicing, diagnosing, and repairing your vehicle. It provides the same detailed information used by technicians at authorized dealerships, making it an invaluable resource for both experienced mechanics and DIY enthusiasts.

The manual offers step-by-step instructions, clear diagrams, illustrations, wiring schematics, and precise specifications to ensure a thorough understanding of each repair process. It covers every aspect of your 1986 BMW 7 Series (E23), including:

* **Maintenance:** Routine maintenance procedures to keep your vehicle in top condition.
* **Engine:** Detailed information on the engine, its components, and potential issues.
* **Control System:** Comprehensive coverage of electronic control systems and their functions.
* **Mechanical:** In-depth explanations of mechanical components, from the fuel system to the transmission.
* **Fuel Service Specifications:** Precise specifications for fuel systems and related components.
* **Emission Control:** Detailed information on emission control systems and their maintenance.
* **Intake Exhaust Cooling:** In-depth coverage of the intake and exhaust systems, including cooling components.
* **Lube:** Complete guidance on lubrication systems and recommended fluids.
* **Ignition Starting Charging:** Comprehensive instructions for diagnosing and repairing ignition, starting, and charging systems.
* **Auto Transmission Clutch:** Detailed explanations of automatic transmission operation and repair.
* **Manual Transmission:** Thorough information on manual transmission operation and maintenance.
* **Transfer Propeller Shaft:** Comprehensive coverage of the transfer case and propeller shaft.
* **Drive Shaft:** Detailed information on drive shafts and their components.
* **Differential:** In-depth analysis of differential operation and repair.
* **Axle Suspension:** Complete coverage of axle and suspension systems, including diagnosis and repair.
* **Tire & Wheel:** Guidance on tire and wheel maintenance, replacement, and troubleshooting.
* **Brake Control:** Detailed information on brake control systems and their operation.
* **Brake:** Comprehensive coverage of brake systems, including diagnosis and repair.
* **Parking Brake:** Specific information on parking brake operation and maintenance.
* **Steering Column:** In-depth analysis of steering column components and repair procedures.
* **Power Steering:** Complete coverage of power steering systems, including diagnosis and repair.
* **Air Condition:** Detailed information on air conditioning systems and their maintenance.
* **Suppl Restraint System:** Thorough explanations of supplemental restraint systems (airbags) and their operation.
* **Seat Belt:** Complete coverage of seat belt systems, including inspection and repair.
* **Engine Immobilizer:** Detailed information on engine immobilizer systems and their functions.
* **Cruise Control:** Complete coverage of cruise control systems, including diagnosis and repair.
* **Wiper & Washer:** Specific information on wiper and washer systems and their maintenance.
* **Door Lock:** Detailed explanations of door lock mechanisms and repair procedures.
* **Meter Audio/Visual:** Complete coverage of instrument cluster and audio/visual systems.
* **Horn:** Specific information on horn operation and repair.
* **Windshield/Glass Mirror:** Guidance on windshield and mirror replacement.
* **Instrument Panel:** Detailed information on the instrument panel and its components.
* **Seat:** Complete coverage of seat systems, including adjustments and repair.
* **Engine Hood/ Door:** Specific information on engine hood and door mechanisms.
* **Exterior & Interior:** Comprehensive coverage of exterior and interior components, including trim and upholstery.
* **Electrical:** In-depth analysis of electrical systems, including wiring diagrams and troubleshooting.
* **Multiplex/Can Communication:** Detailed information on multiplex and CAN communication systems.

This manual empowers you to confidently tackle a wide range of repairs and maintenance tasks for your 1986 BMW 7 Series (E23). You'll have the information you need to diagnose problems, understand system functions, and perform repairs with accuracy and efficiency.

The 1986 BMW 7 Series (E23), a symbol of luxury and engineering prowess, marked a significant era in the German automaker's journey. This generation, launched in 1977 and produced until 1986, represented a substantial evolution from its predecessors, establishing the 7 Series as a benchmark for opulent sedans. Its distinctive design, characterized by a long hood, a prominent kidney grille, and a sleek profile, exuded an aura of prestige. Underneath the elegant exterior lay a robust chassis, meticulously engineered for both comfort and performance. The E23 offered a range of powerful engines, including the iconic 6.3-liter V8, delivering a blend of smoothness and acceleration that catered to discerning drivers. Inside, the 7 Series presented a lavish cabin, meticulously appointed with premium materials and luxurious amenities. Features like power seats, air conditioning, and an elaborate sound system epitomized the era's opulence.

The 1986 model year marked the final year of production for the E23 generation, solidifying its legacy as a pivotal chapter in BMW's history. This model year saw refinements to the existing engines, enhancing fuel efficiency and performance. Further upgrades included improved suspension components and enhanced safety features, reinforcing the 7 Series' reputation for both driving pleasure and passenger well-being. Despite its age, the 1986 BMW 7 Series (E23) continues to hold a special place in the hearts of enthusiasts and collectors, a testament to its timeless design, enduring quality, and its role as a pioneering luxury sedan that set the stage for the future generations of the 7 Series. Its detailed service and repair manual, a vital companion for owners and mechanics alike, provides invaluable insights into the vehicle's intricate workings, ensuring its continued presence on the roads for years to come.