BMW E60 E90 523i 323i Petrol N52 177HP ECU Kit DME 7567178 CAS3 + Key Automatic

BMW E60 E90 523i 323i Petrol N52 177HP ECU Kit DME CAS3 + Key Automatic is an advanced electronic control module from the Electronic control modules and controllers category, designed for use with N52 petrol engines and automatic transmissions. It is responsible for handling key comfort and safety functions related to start authorization, key communication, and integration with other vehicle controllers.

Specifications and technical data

• SKU: 7567178-3
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7567178
• Substitutable numbers: 7567178, 12147567178, 12147577970, 7577970, 61356943814, 6943814, 5WK98085
• Fuel type: Petrol
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Purpose and function of the CAS module

The CAS computer in BMW 3 and 5 series models with the N52 engine acts as the central element of the vehicle's access and start system. It manages key authorization, cooperates with the immobilizer system, and communicates with other controllers in the vehicle network. This ensures consistent operation of electronic systems, which translates into stable powertrain performance and proper functioning of comfort equipment.

Compatibility and technical parameters

The presented module is intended for BMW cars with a petrol engine and an automatic transmission, which is important when selecting the appropriate controller for a specific vehicle configuration. Attention should be paid to compatibility with the N52 engine version and the body generation to maintain full functionality of the electronic systems after installation.

An additional advantage is the presence of a dedicated OEM part number and associated replacement numbers, which facilitates precise identification of the module by VIN or manufacturer markings. This approach minimizes the risk of selecting an unsuitable controller and speeds up the service process.

Benefits of using an original BMW module

Using an original BMW CAS module allows you to maintain the consistency of the vehicle's software and electrical architecture. The controller is factory-adapted to work with other CAN network elements and other control modules, which limits the need for installation modifications. For workshops and users, this means:

• better compatibility with the existing electrical installation,
• easier adaptation and programming compared to replacements,
• stable communication with other controllers in the vehicle.

A used module of this type is a reasonable compromise between cost and functionality, especially in the case of repairs to older vehicles, where a full replacement with a new part would be economically unjustified.

Selection, installation, and service aspects

When selecting a CAS computer, it is crucial to check compatibility by OEM number and reference numbers, as well as matching it to the specific engine and transmission version. In workshop practice, a module of this type usually requires an appropriate programming or adaptation procedure to the vehicle to work correctly with the key, immobilizer, and other controllers.

To ensure trouble-free installation, it is worth entrusting the installation to a specialized service that has the appropriate diagnostic software. This allows you to avoid problems with starting, communication errors in the vehicle network, or incorrect operation of comfort systems.

Substantive support and additional information

If you want to better understand how to safely choose used controllers and other automotive electronics, as well as what to pay attention to when selecting by OEM number and during programming, check out the Global Parts guide: Used automotive electronics on board – why is it worth choosing second-hand ECU modules and sensors?

If you are planning a comprehensive repair or upgrade of the control electronics area in your BMW and need other elements from the same group, such as comfort controllers, body modules, or ECU units, check the available parts in the BMW electronic control modules and controllers category.