This comprehensive service and repair manual provides detailed instructions and illustrations to help you maintain, service, diagnose and repair your BMW 1-series E81, E82, E87 and E88 model year 2012. The manual is specifically designed for these models and covers all aspects of repair, going beyond generic repair information. It offers step-by-step instructions, diagrams, wiring schematics, and specifications, allowing you to work on your vehicle with confidence.

The manual encompasses a wide range of topics, including:

* **Maintenance:** Routine maintenance procedures, schedules, and recommendations.
* **Engine:** Detailed information on engine components, operation, troubleshooting, and repair processes.
* **Control System:** Comprehensive coverage of engine control systems, including electronic control units (ECUs), sensors, and actuators.
* **Mechanical:** In-depth explanations of mechanical systems such as the transmission, drivetrain, suspension, and brakes.
* **Fuel Service Specifications:** Detailed information on fuel system components, operation, and maintenance.
* **Emission Control:** Guidance on emission control systems, diagnostics, and repairs.
* **Intake Exhaust Cooling:** Covers the intake and exhaust systems, cooling system, and related components.
* **Lube:** Information on lubrication systems, fluids, and maintenance.
* **Ignition Starting Charging:** Detailed instructions on ignition, starting, and charging systems.
* **Auto Transmission Clutch:** In-depth explanation of automatic transmission operation, maintenance, and repair procedures.
* **Manual Transmission:** Comprehensive information on manual transmission operation, maintenance, and repair.
* **Transfer Propeller Shaft:** Coverage of the transfer case, propeller shaft, and related components.
* **Drive Shaft:** Detailed instructions on drive shaft operation, maintenance, and repair.
* **Differential:** Explanation of differential operation, maintenance, and repair procedures.
* **Axle Suspension:** Comprehensive coverage of axle and suspension systems, including troubleshooting and repair.
* **Tire & Wheel:** Information on tire and wheel specifications, maintenance, and repair.
* **Brake Control:** Detailed explanation of brake control systems, diagnostics, and repair procedures.
* **Brake:** Comprehensive coverage of brake components, operation, and repair.
* **Parking Brake:** Instructions on the operation, maintenance, and repair of the parking brake system.
* **Steering Column:** Information on the steering column, components, and repair procedures.
* **Power Steering:** Detailed explanation of power steering systems, diagnostics, and repair.
* **Air Condition:** Comprehensive coverage of air conditioning systems, maintenance, and repair procedures.
* **Suppl Restraint System:** Detailed information on supplemental restraint systems (SRS), including airbags and seat belts.
* **Seat Belt:** Instructions on seat belt operation, maintenance, and repair.
* **Engine Immobilizer:** Explanation of engine immobilizer systems, operation, and troubleshooting.
* **Cruise Control:** Coverage of cruise control systems, diagnostics, and repair.
* **Wiper & Washer:** Information on wiper and washer systems, troubleshooting, and repair procedures.
* **Door Lock:** Detailed explanation of door lock systems, diagnostics, and repair procedures.
* **Meter Audio/Visual:** Comprehensive coverage of instrument cluster, audio systems, and visual displays.
* **Horn:** Instructions on horn operation, troubleshooting, and repair.
* **Windshield/Glass Mirror:** Information on windshield, glass, and mirror replacement and repair.
* **Instrument Panel:** Guidance on instrument panel components, operation, and repair.
* **Seat:** Detailed explanation of seat components, operation, and repair procedures.
* **Engine Hood/ Door:** Information on engine hood and door components, operation, and repair procedures.
* **Exterior & Interior:** Comprehensive coverage of exterior and interior components, troubleshooting, and repair.
* **Electrical:** Detailed explanation of electrical systems, diagnostics, and repair.
* **Multiplex/Can Communication:** Information on multiplex and CAN communication systems.

This manual is a valuable resource for anyone wanting to perform service and repairs on their BMW 1-series E81, E82, E87, or E88 model year 2012. It provides the information you need to tackle repairs with confidence, saving you time and money.

The BMW 1-Series, encompassing the E81, E82, E87, and E88 models, represented a significant shift for the German automaker when it debuted in 2004. This compact executive car marked BMW’s entry into the premium hatchback segment, challenging the established dominance of the Audi A3 and Mercedes-Benz A-Class. It was designed to appeal to younger buyers, offering a sporty driving experience and stylish design in a more affordable package compared to BMW's larger models. The 1-Series came in a variety of body styles, including a three-door hatchback (E81), a five-door hatchback (E87), a two-door coupe (E82), and a two-door convertible (E88). The first generation, which covered the 2004-2011 model years, featured a unique rear-wheel drive layout, making it the only car in its segment to offer this configuration and contributing to its agile handling.

Despite its compact dimensions, the 1-Series offered a surprisingly spacious interior, particularly in the five-door hatchback variant. It boasted high-quality materials and a driver-focused cockpit reminiscent of larger BMW models. Under the hood, a range of petrol and diesel engines were available, with power outputs ranging from 115 to 306 horsepower. The 1-Series was lauded for its dynamic handling, thanks to its balanced chassis and precise steering, making it a fun car to drive on winding roads. However, the rear-wheel drive system could pose challenges in slippery conditions, requiring a more experienced driver to handle it effectively. The 1-Series was a success for BMW, selling over 1.3 million units globally during its first generation, establishing itself as a key player in the premium compact car segment. The second generation (F20 and F21), introduced in 2011, brought about significant changes, including a front-wheel drive platform and a more refined overall package.