BMW E87 E90 120i 320i N46 ECU Engine Control Kit DME 7552176 CAS2 Key Automatic

BMW E87 E90 120i 320i N46 ECU Engine Control Kit DME CAS2 Key Automatic is a complete engine control kit designed for selected BMW 1 and 3 Series models equipped with the N46 engine and an automatic transmission. The kit includes the DME engine control unit, the CAS2 module, and a matched key, which facilitates the restoration of proper powertrain operation following an electronic failure. This solution allows for a consistent, technically correct replacement of control components without the need for tedious matching of individual modules.

Specifications and technical data

• SKU: 7552176-17
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7552176
• Substitutable numbers: 12147557291, 7557291, 12147552177, 7552177, 12147552176, 7552176, 12147550535, 7550535, 12147550534, 7550534, 12147545043, 7545043, 12147545042, 7545042, 12147531846, 7531846, 0261208582, 0 261 208 582, 61356943771, 6943771
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Application and function of the engine control kit

The presented kit from the Electronic control modules and ECUs category is responsible for managing the operation of the N46 petrol engine in BMW E87 and E90 models in 120i and 320i versions with an automatic transmission. The DME controller manages, among other things, fuel dosage, ignition, and cooperation with the automatic transmission, while the CAS2 module is responsible for start authorization and communication with the key. Thanks to this set, it is possible to restore the integrity of the immobilizer system and engine control in a single service process.

Benefits of using a complete DME + CAS2 + key kit

Using a complete control kit instead of individual modules significantly simplifies workshop tasks. In practice, this means:

• consistent matching of the engine controller and CAS2 module in terms of security and communication within the vehicle's bus,
• the ability to restore vehicle starting without the need to program the entire immobilizer system from scratch,
• better compatibility with the factory electrical installation in BMW cars with the N46 engine and automatic transmission.

For a workshop or user, this means shorter vehicle downtime and a more predictable repair process for the engine's electronic system.

Technical characteristics and compatibility

The kit has been designed for use with an automatic transmission, which is crucial when selecting a DME controller for a specific vehicle configuration. Proper matching to the N46 engine version and E87/E90 platforms allows for maintaining correct communication with other modules in the vehicle, such as ABS, the transmission module, or the instrument cluster. The product comes from the BMW range, which helps maintain the factory operating parameters of the powertrain after replacement.

Condition, origin, and practical aspects of installation

The components included in the kit come from a used vehicle, which allows for an economical restoration of the engine control system's efficiency while maintaining the manufacturer's original specifications. In practice, such a set is particularly useful in situations where the DME controller has been damaged, there are problems with the CAS2 module, or there is improper communication with the key. The kit enables the workshop to carry out repairs in an orderly manner, reducing the risk of incompatibility between individual modules.

Expert support and selection of used electronics

When choosing a used engine control kit, it is worth paying attention to the compatibility of the engine version, transmission type, and electronic architecture of the given vehicle year. Additional information on the safe selection of used engine controllers, comfort modules, and parking sensors can be found in the article: The second life of electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?

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 DME controllers, CAS modules, or other units managing the powertrain, check the available parts in the BMW electronic control modules and ECUs category.