BMW E87 E90 E91 120i 320i N46 150HP ECU KIT DME 7561834 CAS2 + Key Automatic

BMW E87 E90 120i 320i N46 150HP Engine Control Unit Key DME 7561834 CAS2 is a complete engine control set designed for BMW 1 and 3 Series models with the N46 engine producing 150 HP. The set includes the DME engine control unit along with the CAS2 module and key, facilitating the restoration of proper powertrain operation after an electronic failure. This solution is particularly beneficial when replacing the entire control system in vehicles equipped with an automatic transmission.

Specifications and technical data

• SKU: 7561834-14
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7561834
• Substitutable numbers: 7561834, 12147561834, 7565301, 12147565301, 7561891, 12147561891, 7550867, 12147550867, 6981416, 51127118162, 7118162
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Purpose and Function of the DME + CAS2 Set

The offered control set is dedicated to BMW cars with the 150 HP N46 engine, used in versions such as the 120i and 320i of the E87 and E90 generations. The combination of the DME controller with the CAS2 module and a matched key allows for seamless management of engine operation, immobilizer, and start authorization. As a result, this set provides a practical basis for vehicle repair after damage to the original electronics or synchronization issues between the controller and the comfort module.

Benefits of Using an Original BMW Module

The DME with CAS2 set comes from the original BMW line, which translates to proper compatibility with the electrical system and CAN network architecture of the specific model. Using a factory controller minimizes the risk of communication errors, coding problems, and incompatibilities with the vehicle's equipment. In practice, this means stable engine operation, correct functioning of security systems, and the possibility of further diagnostics using standard BMW service tools.

The product is categorized under Electronic Control Modules and Units, highlighting its role as the central element managing the powertrain's operating parameters. When replacing it, it is important to pay attention to the compatibility of the engine, body generation, and gearbox type to maintain the system's full functionality.

Compatibility with Automatic Transmission

The presented set is intended for vehicles equipped with an automatic transmission. This is significant for torque control logic as well as for cooperation with the gearbox module and safety systems. A correctly selected engine controller for an automatic version facilitates:

• proper data exchange between the DME and the gearbox module,
• maintenance of appropriate gear shifting strategies,
• preservation of factory comfort and driving dynamics parameters.

Thanks to this, after proper adaptation and coding, it is possible to restore driving characteristics close to the factory configuration.

Condition, Origin, and Practical Application in Service

The offered set is used, making it an attractive cost-effective alternative to new components while maintaining the original manufacturer's specifications. This type of set is primarily used in:

• repairs after damage to the DME controller or CAS2 module,
• cases of immobilizer problems and inability to start the engine,
• vehicle rebuild projects after collisions or floods, where replacement of control electronics is required.

The inclusion of a matched key in the set simplifies the adaptation process in the vehicle, reducing the scope of additional programming work required by the workshop.

Technical Support and Additional Information

Before purchasing, it is advisable to compare your vehicle's specifications with the data in the specifications tab, especially regarding the engine type, body generation, and gearbox type. If necessary, you can consult a mechanic or automotive electronics specialist to ensure proper integration with the existing system.

If you are interested in a broader context of using salvaged parts and the impact of such a choice on the environment and operating costs, check out the article on the circular economy and the benefits of using used components in car repairs. This will help you better assess how choosing original used control modules fits into a long-term vehicle maintenance strategy.