BMW E81 E87 LCI 116i 1.6 Petrol N43 ECU Kit DME 7579142 CAS3 + Key Automatic

BMW E81 E87 LCI 116i 1.6 Petrol N43 ECU Kit DME CAS3 + Key Automatic is a set designed for the N43 petrol engine with an automatic transmission. Thanks to its factory configuration for a specific drivetrain and fuel type, it provides a coherent electronic solution for the powertrain, facilitating the restoration of full vehicle functionality after the failure of the original ECU.

Specifications and technical data

• SKU: 7579142-16
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7599881
• Substitutable numbers: 7579142, 12147579142, 7599881, 12147599881, 7583225, 12147583225, 7507228, 12147507228, 7580279, 12147580279, 7593667, 12147593667, 7585654, 12147585654, 7575668, 12147575668, 7579144, 12147579144, 7585304, 12147585304, 7599882, 5WK93709, 61359217853, 9217853
• Fuel type: Petrol
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Intended use and kit configuration

The presented BMW E81 E87 LCI 116i 1.6 Petrol N43 ECU Kit DME CAS3 + Key Automatic has been prepared specifically for the BMW 1 E81/E87 LCI 116i with an N43 petrol engine paired with an automatic transmission. This means that the engine control logic, immobilizer, and communication with the transmission are factory-tuned for this configuration, which reduces the risk of compatibility issues.

The set includes the electronic engine control module, the CAS3 comfort/immobilizer module, and a matched key, allowing it to be treated as a starter kit for powertrain electronics for the given model. This configuration is particularly useful when replacing a damaged ECU, where maintaining the consistency of the vehicle's security system is necessary.

Benefits of using a complete BMW E81 E87 LCI 116i 1.6 Petrol N43 ECU Kit DME CAS3 + Key Automatic

Using a complete kit instead of a single ECU provides a number of practical service benefits:

• maintaining compatibility between the ECU DME, CAS3 module, and key in one system,
• facilitating adaptation and programming procedures compared to sourcing components from different origins,
• reducing the risk of conflicts in the immobilizer system and communication errors in the vehicle network,
• the ability to efficiently restore engine operation after an electronics failure.

For workshops specializing in the BMW brand, such a set provides a practical base for repairing the engine control system in 116i models with the N43 unit and automatic transmission, without the need to collect components from multiple vehicles.

Application in the BMW 116i N43 powertrain

The electronic DME controller in this set is responsible for precise management of the N43 petrol engine, including fuel injection, ignition, and cooperation with the automatic transmission. In combination with the CAS3 module, it creates an integrated control and powertrain security system that communicates with other vehicle modules within the BMW electronic network.

Due to its intended use for the automatic transmission version, the control logic takes into account the specifics of gear shifting, engine load, and cooperation with comfort and safety systems. This is important when selecting spare parts – using an ECU from a different drivetrain configuration can lead to errors, which is why a dedicated kit for the 116i N43 with an automatic transmission is a technically safer solution.

Product characteristics and use of used parts

The offered set comes from dismantling, which allows for an economical restoration of vehicle efficiency while maintaining original BMW electronics. A used BMW E81 E87 LCI 116i 1.6 Petrol N43 ECU Kit DME CAS3 + Key Automatic is particularly attractive in situations where a new ECU is difficult to obtain or requires very expensive configuration. In workshop practice, such a solution often shortens repair time and enables quick vehicle startup after a failure.

To better understand the specifics of working with used electronics, selection by OEM numbers, and issues of hardware and software compatibility, it is worth reading the guide on our blog: Used automotive electronics – second-hand ECU modules and sensors. The article discusses practical aspects of installation, diagnostics, and the most frequently asked questions related to such components.

BMW electronic control modules and ECUs – expansion and service

In the case of more extensive repairs to the powertrain and electronics in the BMW 1 Series, it is also worth considering other elements from the Electronic control modules and ECUs group, such as transmission controllers, comfort modules, or units responsible for safety systems. If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other elements from the same group, such as transmission controllers, comfort modules, or additional safety system controllers, check the available parts in the BMW electronic control modules and ECUs category.

Summary

BMW E81 E87 LCI 116i 1.6 Petrol N43 ECU Kit DME CAS3 + Key Automatic is a technically coherent solution for the powertrain, allowing for the effective replacement of damaged control electronics. The set ensures the compatibility of key modules responsible for starting, security, and engine control, which facilitates service work and reduces the risk of immobilizer problems. For users and workshops looking for original solutions from dismantling, this is a functional and cost-effective alternative to purchasing new components.