BMW E87 LCI E90 118i 318i N43 143HP ECU KIT DME 7599881 CAS3 + Key Automatic

BMW E87 LCI E90 118i 318i N43 143HP ECU KIT DME CAS3 + Key Automatic is a set from the Electronic control modules and ECUs group, designed for BMW vehicles equipped with an automatic transmission. The kit includes an engine control unit (ECU) working with the CAS3 module and a matched key, which facilitates consistent operation of the vehicle's starting and security system.

Specifications and technical data

• SKU: 7599881-2
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7599881
• Substitutable numbers: 7599881, 12147599881, 7583225, 12147583225, 7507228, 12147507228, 7580279, 12147580279, 7593667, 12147593667, 7585654, 12147585654, 7575668, 12147575668, 7579144, 12147579144, 7585304, 12147585304, 12147599882, 12147573758, 7579142, 12147579142, 5WK93729, 61359226238, 9226238
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Purpose and function of the kit

The presented engine control unit integrated with the CAS3 system is responsible for managing the engine's operation and authorizing the start-up in BMW E87 LCI and E90 series cars. Cooperation with the automatic transmission ensures proper communication between the engine electronics and the drivetrain, which translates into stable operation, smooth gear changes, and correct handling of comfort functions. The presence of a matched key in the set allows for maintaining the consistency of the immobilizer system, which is particularly important when replacing components responsible for vehicle security. Thanks to this, the kit serves as a practical basis for professional repair or adaptation of the engine control system.

Benefits of using an original BMW module

The original controller from the CAS3 family is designed for the specific electrical architecture of BMW, which helps maintain the factory logic of system operation. Using such a module:

• facilitates integration with the vehicle's existing electrical installation,
• ensures compatibility with comfort and safety functions,
• reduces the risk of communication errors in the vehicle's buses. For workshops specializing in the BMW brand, this solution allows for efficiently restoring the correct operation of the engine control system after a failure or during extensive electronics repairs. The consistency of the ECU, CAS3, and key facilitates the process of programming and matching to a specific vehicle.

Integration with automatic transmission

The presented set is intended for vehicles with an automatic transmission, which is important when selecting the appropriate controller. The module cooperates with the gear shifting system, transmitting information about engine load, speed, and other parameters necessary for proper gear selection. This makes it possible to maintain the correct drive characteristics, in accordance with the manufacturer's specifications. For the user, this means predictable vehicle behavior, correct response to the accelerator pedal, and stable cooperation with driving assistance systems. For the service center – easier diagnostics and fewer conflicts between modules in the vehicle network.

Product characteristics and practical application

The item comes from the BMW electronic control modules and ECUs group, which means it was designed with specific model platforms and their electrical requirements in mind. The used condition allows for economical repair while maintaining the original design of the control system. The set is particularly useful in situations where the ECU has been damaged, there are problems with the CAS3, or it is necessary to replace the set for diagnostic reasons. Before installation, it is recommended to verify compatibility with the specific vehicle configuration and perform appropriate programming and adaptation procedures at a specialized service center. A correctly selected and configured module allows for restoring full functionality of the start-up and engine control system without interfering with the engine's mechanics. If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other components from the same group, such as additional controllers, comfort modules, or drivetrain management systems, check the available parts in the BMW electronic control modules and ECUs category.

Technical support and selection of used parts

When working with premium vehicle electronics, it is worth using reliable sources of knowledge. If you are interested in how original components affect the character of cars from German manufacturers and how to safely use used modules, check out the article on the renovation and repair of German cars and the selection of used parts. Additionally, for a comparison of the approach of another premium brand, you can read the post on how original modules and equipment help preserve the character of Audi.