Seat Leon Mk2 1P USB AUX Port Socket Connection Media Adapter 1P0035726A

Seat Leon Mk2 1P USB AUX Port Socket Connection Media Adapter is a practical component of the multimedia installation, allowing for convenient connection of external audio sources to the factory audio system. Thanks to this solution, you gain easy access to a USB port and AUX input in one compact module, tailored to the vehicle's interior. It is a functional choice for users who want to maintain the original character of the cockpit while improving daily comfort.

Specifications and technical data

• SKU: 1P0035726A-1
• Mark: Seat
• Condition: Used
• OEM Part Number: 1P0035726A
• Substitutable numbers: 1P0035726A, 1P0 035 726 A
• Category: ECUs & Computer Modules

Purpose and function of the module

The presented USB/AUX port is a component from the Electronic control modules and controllers group, designed for integration with the factory multimedia system in the second-generation Seat Leon model. The module acts as a user interface – it relocates connection points from the wiring harness to an easily accessible panel, which facilitates the use of data storage devices and external audio players.

This type of solution allows for:

• convenient connection of a USB flash drive or a cable with a mobile device,
• using the AUX input as a universal audio path,
• maintaining a consistent, factory aesthetic of the center console.

Construction and integration with the installation

The USB/AUX port is built into a compact housing adapted for installation in a dedicated spot in the center console or tunnel. The connectors are routed to ensure a stable cable connection and to reduce mechanical stress during frequent use. The module's design is adapted to work with the vehicle's original electrical wiring, which helps maintain proper communication with the audio system's control unit.

Thanks to the factory geometry and properly selected connectors, the installation is orderly, without the need to interfere with the dashboard structure or use non-factory adapters. This solution is particularly beneficial for users who want to avoid modifying the electrical installation.

Practical application and user benefits

Using the original USB/AUX port in a Seat Leon Mk2 translates into a number of practical benefits in daily operation:

• easy access to multimedia from portable devices without the need for additional holders or adapters,
• the ability to play music from various sources while maintaining factory control from the radio or steering wheel (depending on the car's configuration),
• aesthetic integration of the sockets into the original interior trim elements.

A used module of this type is an attractive alternative to new replacements, especially when you want to maintain the original vehicle specification and compatibility with the existing installation.

Characteristics as an electronic component

As a part from the Electronic control modules and controllers group, the USB/AUX port works with the factory audio system, transmitting signals in accordance with the manufacturer's specifications. Proper matching of electrical parameters and connector design reduces the risk of interference and communication problems in the vehicle's bus. This is particularly important in modern installations where many multimedia functions are integrated with other comfort systems.

Selecting an original module for a specific equipment version allows for maintaining the consistency of the vehicle's configuration, which is important both from a functional point of view and for potential service diagnostics.

Selection, compatibility, and purchase

When choosing this type of component, it is worth paying attention to compatibility with the specific equipment version and the audio system used in your Seat Leon. Comparing markings with the existing module and verifying the vehicle configuration is helpful to ensure proper operation after installation. A used USB/AUX port often allows for restoring the full functionality of the factory multimedia system without the need for a costly replacement of the entire radio.

If you want to better understand how to safely choose used electronic components in a car, including modules and sensors, the following guide will be helpful: Used car 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 electronic installation area in your Seat and need other components from the same group, such as control modules, comfort controllers, or additional multimedia interfaces, check the available parts in the Seat electronic control modules and controllers category.