Range Rover Sport L320 Cruise Control Module Unit ECU AH42-14B588-AA

Range Rover Sport L320 Cruise Control Module Unit ECU is a specialized component from the Electronic Control Modules and Controllers group, responsible for the operation of the adaptive cruise control system in the vehicle. A properly selected module ensures stable cooperation with other safety and comfort systems, which translates into predictable vehicle behavior in traffic. This solution is intended for users who expect precise ACC system operation and compatibility with the factory Land Rover electronics architecture.

Specifications and technical data

• SKU: AH42-14B588-AA
• Mark: Land Rover
• Condition: Used
• OEM Part Number: AH42-14B588-AA
• Substitutable numbers: AH42-14B588-AA, AH4214B588AA, LR017368, LR025949, 8W8314B588AE, 8W83-14B588-AE
• Category: ECUs & Computer Modules

Purpose and function of the ACC module

The presented module is a component of the adaptive cruise control system in the Range Rover Sport L320 model, working in conjunction with distance sensors, the braking system, and engine management. Its task is to process signals from the vehicle and the environment, as well as to control the maintenance of the set speed and distance to the vehicle ahead. Thanks to this, the driver receives support during highway driving and in variable traffic conditions, while maintaining the smoothness of response characteristic of Land Rover. As an element from the Electronic Control Modules and Controllers category, the ACC cruise control module is designed to work in the vehicle's complex communication network, using data buses and dedicated manufacturer protocols. A correctly selected component allows for maintaining system integrity, avoiding communication errors, and ensuring the proper operation of driver assistance functions.

Benefits of using an original Land Rover module

Using a module from the Land Rover brand means maintaining the factory operating parameters of the ACC system. Original electronics are designed for a specific vehicle platform, which translates into:

• consistency with engine control unit software, ABS/ESP, and assistance systems,
• correct interpretation of signals from distance and speed sensors,
• stable operation of speed and distance maintenance functions,
• easier diagnostics using factory service tools. For workshops and users, this means a lower risk of compatibility issues and the ability to maintain a configuration consistent with the vehicle manufacturer's guidelines. In the case of adaptive cruise control, this is of particular importance, as it is a system closely related to driving safety.

Product characteristics and service application

The offered module belongs to the group of used components, which makes it an attractive service solution in situations where replacing it with a new element is economically unjustified. With proper selection based on manufacturer markings and vehicle configuration, such a module can be used both as a spare part in the event of a failure and when restoring the efficiency of the ACC system after a collision or replacement of other electronic components. In workshop practice, a module of this type is used, among others, for:

• clearing errors related to the unavailability of the adaptive cruise control function,
• repairs after damage to the electronic installation,
• diagnosing communication problems in the vehicle's control network,
• restoring full functionality of driver assistance systems.

Selection, compatibility, and installation aspects

For the ACC cruise control module to work correctly, it is crucial to match it to the specific configuration of the Range Rover Sport L320 based on manufacturer markings and vehicle data. In many cases, an appropriate adaptation or coding procedure in the vehicle is also necessary, performed using specialized diagnostic software. For this reason, it is recommended that installation and configuration be carried out by a workshop with experience in working with Land Rover electronics. A properly selected and configured module allows for restoring the full functionality of the adaptive cruise control without interfering with the vehicle's mechanics. For the user, this means regaining driving comfort on long routes and the correct operation of functions supporting speed and distance maintenance.

Technical support and additional information

If you want to better understand how to safely choose used controllers and sensors, what to pay attention to regarding hardware and software compatibility, and what the installation and diagnostic process for such elements looks like, check out the guide: Used automotive electronics – ECU modules and second-hand sensors in practice. This is a practical supplement to knowledge when working with modules from the electronic control group. If you are planning a comprehensive repair or upgrade of the electronic control area in your Land Rover and need other elements from the same group, such as engine controllers, comfort modules, or safety management systems, check the available parts in the Land Rover Electronic Control Modules and Controllers category.