Audi A8 D4 3.0 TDI Quattro CDTA 258HP Engine ECU Kit 4H0907401 BCM + Key + Lock

Audi A8 D4 3.0 TDI Quattro CDTA 258HP Engine ECU Kit BCM + Key + Lock is a set from the Electronic control modules and ECUs group, designed for the powertrain of the Audi A8 D4 generation with the 3.0 TDI CDTA engine. The set includes the control module, key, and lock, which facilitates consistent matching of electronic components in the vehicle and allows for efficient operation of the immobilizer system.

Specifications and technical data

• SKU: 4H0907401H-1
• Mark: Audi
• Condition: Used
• OEM Part Number: 4H0907401H
• Substitutable numbers: 4H0907401H, 4H0 907 401 H
• Category: ECUs & Computer Modules

Purpose and function of the set

The presented set has been designed for integration with the engine electronics in the Audi A8 D4 3.0 TDI CDTA. The BCM family controller is responsible for advanced communication with other modules in the vehicle, while the included key and lock enable consistent operation of the security system and comfortable use of the car.

By combining the controller with the mechanical-electronic components of the access system, the set provides a practical basis for repairing or replacing the existing configuration in the vehicle, reducing the risk of problems with matching individual components.

Benefits of using an original Audi module

The item comes from a line intended for the Audi brand, which helps maintain consistency with the vehicle's factory electrical architecture. Proper matching to the A8 D4 platform allows for maintaining the powertrain's performance characteristics and correct cooperation with other controllers in the vehicle's network.

Using an original module with a complete key and lock set facilitates the service process, especially in situations where it is necessary to replace several interrelated elements of the security and engine control system. This solution promotes stable electronics operation and reduces the time required for configuration.

Characteristics of the used component

The product is offered as a used element from the controller group, which is an attractive cost alternative to new components while maintaining the functionality required for daily operation. This type of solution is particularly beneficial for vehicle repairs where maintaining a reasonable service budget is important.

The controller set with key and lock allows for a more consistent approach to repairing the electronic system, limiting the need to select individual elements from different sources.

Application in service practice

In workshops specializing in the Audi brand, this type of set is used both for repairs after electronic damage and for replacements resulting from communication problems in the vehicle's network. Integrating the controller with the key and lock facilitates the configuration of the immobilizer system and the restoration of proper engine starting.

For Audi A8 D4 3.0 TDI CDTA users, this set can be a solution that allows for restoring the efficiency of the engine control system without the need to reach for more expensive, brand-new components, while maintaining high compatibility with the original installation.

Audi electronic control modules and ECUs – expansion and modernization

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

How used parts help preserve the Audi character

For owners of Audi models who want to maintain the consistency of equipment with factory specifications, it is important to use components from the same brand and vehicle generation. That is why it is worth checking out the guide describing how original, used elements – including controllers and modules – influence the preservation of driving characteristics and comfort. You can find more on this topic in the article Audi and emotions in their purest form. How do used parts help maintain the brand's DNA?.