This comprehensive service and repair manual for the BMW 3-series E90, E91, E92, and E93 models from 2012 provides you with the exact same information used by technicians at authorized dealerships to maintain, service, diagnose, and repair your vehicle.

This manual offers complete step-by-step instructions, detailed diagrams, illustrations, wiring schematics, and specifications to guide you through every aspect of repairing your BMW. You'll find everything you need on how to perform essential maintenance tasks, as well as detailed instructions on how to address more complex repairs.

The manual covers a wide range of topics, including:

* **Maintenance:** Routine checks, oil changes, filter replacements, and more.
* **Engine:** Diagnosis, repair, and rebuilding of engine components.
* **Control System:** Understanding and troubleshooting electronic control units (ECUs).
* **Mechanical:** Repairing and maintaining components like the transmission, suspension, brakes, and steering.
* **Fuel Service Specifications:** Information on fuel systems, including injectors, pumps, and lines.
* **Emission Control:** Diagnosis and repair of emissions systems.
* **Intake Exhaust Cooling:** Understanding and maintaining cooling systems.
* **Lube:** Proper lubrication procedures for various components.
* **Ignition Starting Charging:** Information on the ignition, starting, and charging systems.
* **Auto Transmission Clutch:** Repair and maintenance of automatic transmissions.
* **Manual Transmission:** Repair and maintenance of manual transmissions.
* **Transfer Propeller Shaft:** Understanding and repairing the transfer case and propeller shaft.
* **Drive Shaft:** Repair and maintenance of drive shafts.
* **Differential:** Troubleshooting and repair of differentials.
* **Axle Suspension:** Repair and maintenance of axles and suspension systems.
* **Tire & Wheel:** Information on tires, wheels, and related components.
* **Brake Control:** Understanding and repairing brake control systems.
* **Brake:** Repair and maintenance of braking systems.
* **Parking Brake:** Troubleshooting and repair of parking brakes.
* **Steering Column:** Repair and maintenance of steering columns.
* **Power Steering:** Diagnosis and repair of power steering systems.
* **Air Condition:** Understanding and repairing air conditioning systems.
* **Suppl Restraint System:** Information on supplemental restraint systems (airbags).
* **Seat Belt:** Repair and maintenance of seat belts.
* **Engine Immobilizer:** Troubleshooting and repair of engine immobilizers.
* **Cruise Control:** Diagnosis and repair of cruise control systems.
* **Wiper & Washer:** Repair and maintenance of wiper and washer systems.
* **Door Lock:** Understanding and repairing door locks.
* **Meter Audio/Visual:** Information on instrument clusters and audio/visual systems.
* **Horn:** Troubleshooting and repair of horn systems.
* **Windshield/Glass Mirror:** Repair and replacement of windshields, windows, and mirrors.
* **Instrument Panel:** Repair and maintenance of the instrument panel.
* **Seat:** Repair and maintenance of seats.
* **Engine Hood/Door:** Repair and maintenance of engine hoods and doors.
* **Exterior & Interior:** Information on exterior and interior components and repairs.
* **Electrical:** Troubleshooting and repair of electrical systems.
* **Multiplex/Can Communication:** Understanding and troubleshooting multiplex and CAN communication systems.

With this comprehensive manual, you'll gain the knowledge and confidence to perform a wide range of maintenance and repair tasks on your BMW, saving you time and money in the long run.

The BMW 3-Series (E90/E91/E92/E93) is a compact executive car produced by BMW from 2005 to 2012. It was the fifth generation of the 3-Series, and it was available in a range of body styles, including a sedan (E90), a touring wagon (E91), a coupe (E92), and a convertible (E93). The E90 generation was a significant departure from its predecessor, the E46, with a new platform, new engines, and a more refined and sophisticated design. It was praised for its handling, performance, and interior quality, solidifying the 3-Series' reputation as one of the best driving cars in its class.

The E90 3-Series was offered with a wide range of gasoline and diesel engines, ranging from the entry-level 318i to the high-performance M3. All engines were paired with either a 6-speed manual transmission or a 6-speed automatic transmission, with the option of a 7-speed dual-clutch transmission on some models. The E90 generation introduced several new technologies, including iDrive, BMW's infotainment system, and a suite of advanced safety features. The 3-Series' success continued with the E90, marking a significant point in BMW's history and solidifying the 3-Series' reputation as a benchmark in the premium compact executive car segment.