Mercedes W164 X164 Distronic Radar Sensor Cruise Control A2045400017

Mercedes W164 X164 Distronic Radar Sensor Cruise Control is an advanced component from the Electronic control modules and controllers group, responsible for the precise operation of the active cruise control system in Mercedes vehicles. It enables the maintenance of a set speed and a safe distance from the vehicle ahead, supporting the driver in smooth and comfortable driving.

Specifications and technical data

• SKU: A2045400017
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2045400017
• Substitutable numbers: A2045400017, A 204 540 00 17
• Part type: ADAS Control Module
• Category: ECUs & Computer Modules

Function and application of the Distronic radar sensor

The Distronic radar sensor in Mercedes W164 and X164 models works in conjunction with the cruise control system, analyzing the traffic situation in front of the vehicle. Based on radar signals, the controller selects the appropriate acceleration or deceleration to maintain a safe distance, which significantly increases driving comfort on long journeys and in highway traffic. This component is part of the factory safety and comfort system, which is why its proper operation has a direct impact on handling stability and the vehicle's predictable response to changing traffic conditions. Replacing a damaged sensor with a functional module from the same group allows for the restoration of full active cruise control functionality without interfering with other components.

Benefits of using an original Mercedes module

The offered sensor belongs to the group of original Mercedes solutions, which translates into a proper fit for the electrical installation and the architecture of onboard systems. As a result, the module works with the vehicle's factory controllers, maintaining the operating parameters intended by the manufacturer. Key advantages of using an original Distronic radar sensor include:

• maintaining full compatibility with the cruise control system and driver assistance systems,
• stable communication with the vehicle's electronic network,
• reducing the risk of system errors and warning messages on the dashboard,
• the possibility of diagnostics and adaptation using standard service tools designed for Mercedes.

Characteristics as a component in the Electronic control modules and controllers category

As a part from the Electronic control modules and controllers category, the Distronic radar sensor is designed to operate in the complex electronic environment of the vehicle. It requires correct mechanical installation and proper connection to the wiring to ensure accurate measurement parameters of the distance and speed of objects in front of the car. This module can be used both for post-accident repairs (e.g., after replacing the bumper or front reinforcements) and for troubleshooting issues related to the improper operation of the active cruise control. Proper selection by OEM number and compatibility with the vehicle platform allow for effective replacement without the need for wiring modifications or additional adapters.

Condition, installation, and practical aspects

The offered sensor is a secondary market component, which allows for an economical repair of the Distronic system while maintaining the original design of the system. Before installation, it is recommended to verify compatibility with the specific vehicle equipment version and to perform adaptation and calibration in accordance with service procedures to ensure proper operation of the distance-keeping function. Due to the nature of the radar's operation, it is also important to correctly align the module relative to the vehicle's axis and ensure there are no obstacles in its field of view (e.g., improper covers or tuning elements). A correctly installed and calibrated sensor ensures a predictable response of the cruise control system to changes in the speed of preceding vehicles.

Technical support and electronics selection

When selecting and installing used components from the Electronic control modules and controllers group, it is worth using verified sources of knowledge. Detailed information on how to properly select modules and sensors by OEM numbers, how to verify hardware and software compatibility, and what to pay attention to during installation can be found in the Global Parts guide: Used automotive electronics – ECU modules and sensors from the secondary market. If you are planning a comprehensive repair or upgrade of the driver assistance systems area in your Mercedes and need other components from the same group, such as controllers, comfort modules, or assistance system sensors, check the available parts in the Mercedes electronic control modules and controllers category.