Audi A4 B8 A5 8T Start Stop Switch Button Unit 8K2927325

Visual condition of the part

The product shows signs of use visible in the photos.

Audi A4 B8 A5 8T Start Stop Switch Button Unit is a factory-original control component for the engine start system in Audi A4 B8 and Audi A5 8T models. This precisely crafted start/stop button from the Switches, control elements and ignition locks category ensures convenient, modern, and safe engine ignition and shutdown. Its black color scheme integrates harmoniously with the center console, maintaining a consistent interior look.

Specifications and technical data

• SKU: rhd-8K2927325
• Mark: Audi
• Condition: Used
• OEM Part Number: 8K2927325
• Substitutable numbers: 8K2927325, 8K2 927 325
• Color: Black
• Category: Switches & Controls

Function and application of the start/stop button

The start/stop button is responsible for the electronic control of the engine starting and stopping procedure, working in conjunction with factory comfort modules and the immobilizer system. This component is designed as part of the keyless access system, allowing the driver to conveniently and reliably initiate the engine start without using a traditional ignition key.

A properly functioning start/stop button is crucial for:

• stable engine starting without delays or interruptions,
• correct ignition shutdown and power supply to electrical consumers,
• maintaining full functionality of safety and comfort systems.

Construction, ergonomics, and interior fitment

The component has been designed specifically for the Audi A4 B8 and Audi A5 8T center console, ensuring a precise fit with the factory panel. The black color of the housing allows for aesthetic integration into the original cockpit finish, without the need for modifying plastics or mounting brackets.

The button features a clearly perceptible tactile feedback, which facilitates intuitive operation without taking your eyes off the road. The module's construction is prepared for compatibility with the factory wiring harness, ensuring that installation is orderly and compliant with the manufacturer's specifications.

Benefits of using the original switch

Using an original switch from the Switches, control elements and ignition locks category allows for full compatibility with the vehicle's electronics. The correct electrical parameters and proper connector geometry minimize the risk of communication errors with control modules and reduce the possibility of fault messages appearing on the instrument cluster.

The main advantages of this solution include:

• consistent operation with the factory start/stop system,
• no need for mechanical or electrical adaptation,
• maintaining the original appearance and ergonomics of the interior.

Component condition and installation aspects

The offered module is in used condition, which allows for an economical replacement of a faulty button while maintaining appropriate build quality. The component is intended for installation in place of the factory switch, using existing mounting points and the original wiring harness.

Before installation, it is recommended to:

• verify compatibility with the specific vehicle's equipment,
• check the condition of the electrical connectors in the vehicle,
• perform a functional test after installation using the standard engine starting procedure.

Expanding the control system in your Audi

If you are planning a comprehensive repair or upgrade of the control zone in your Audi and need other elements from the same group, such as function buttons, control modules, or ignition lock assemblies, check out the available parts in the Audi Switches, control elements and ignition locks category.

Technical knowledge and additional materials

When planning broader service work, it is worth learning about the specifics of used premium-class components and the possibilities for optimizing repair costs. Practical information on selecting original parts from dismantling can be found in the article Used parts for Mercedes - original parts from dismantling, which discusses the advantages of using branded components at a reasonable price.

Additional tips regarding vehicle operation and planning maintenance replacements are provided in the guide TOP 10 most frequently replaced parts in your car, which is helpful for organizing service work and keeping your vehicle in good technical condition.