Mercedes SLC R172 Parktronic Parking Sensor Module Unit ECU A1729003106

Mercedes SLC R172 Parktronic Parking Sensor Module is an original part from the Electronic Control Units and Controllers group, responsible for precise management of the Parktronic parking assistance system. A used OEM module allows for a technically correct repair of the system, preservation of the original parking assistant functions, and consistency with the Mercedes vehicle's electronics.

Specifications and technical data

• SKU: A1729003106
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1729003106
• Substitutable numbers: A1729003106, A 172 900 31 06
• Category: ECUs & Computer Modules

Parktronic Module Function and Application

The presented control module is responsible for the coordination of parking sensors in the Mercedes SLC R172 model, processing signals from ultrasonic sensors and transmitting them to the vehicle's visual and acoustic systems. A correctly selected controller ensures:

• stable operation of the parking assistant in front/rear mode (according to the car's configuration),
• smooth generation of audible signals warning of obstacles,
• correct interpretation of distances and presentation of information on the vehicle's display,
• integration with other comfort and safety systems in the Mercedes.

By maintaining the original electronics architecture, the module allows for the retention of original Parktronic functionality without the need for universal or adapted solutions.

Benefits of Choosing an Original Mercedes Module

An original module from the Electronic Control Units and Controllers group is designed for a specific vehicle platform, which translates into a number of practical advantages:

• factory fit for the car's electrical installation and communication bus,
• compatibility with the vehicle's software and the Parktronic system's operating logic,
• maintenance of operating parameters as intended by the Mercedes manufacturer,
• possibility of diagnostics and coding using standard service tools.

Choosing a used OEM module is a solution that combines technical repair correctness with reasonable service costs, especially in the case of advanced onboard electronics.

Selection by OEM and Vehicle Electronics Integration

When replacing the Parktronic controller, it is crucial to match it to the specific car configuration based on the OEM number and vehicle data. Correct selection guarantees:

• proper cooperation with existing parking sensors,
• no errors in the diagnostic system and on the instrument cluster,
• possibility of eventual coding or adaptation within service procedures.

If you want to better understand how to safely choose used controllers and sensors, how to check hardware and software compatibility, and what to pay attention to during installation, read the guide Used Automotive Electronics Onboard – Why Choose Second-Hand ECUs and Sensors?.

Condition, Installation, and Service Application

The module is a used part, which in practice means it comes from disassembly and is intended for reinstallation in the vehicle by the customer or workshop. This type of part is ideal for:

• post-accident repairs with damage to the Parktronic installation,
• troubleshooting parking assistance system electronics,
• restoring system functionality after flooding or corrosion of the original controller.

Due to the specificity of automotive electronics, installation by a workshop experienced with Mercedes systems and having access to appropriate diagnostics is recommended, which facilitates verification of correct operation after installation.

System Expansion and Other Mercedes Modules

If you are planning a comprehensive repair or upgrade of the comfort and safety electronics area in your Mercedes and need other parts from the same group, such as assistance system controllers, comfort modules, or body function management units, check the available parts in the Mercedes Electronic Control Units and Controllers category.