Audi A4 B8 A5 8T Q5 8R Red Engine Ignition Start Stop Switch Button 8K0905217C

The Audi A4 B8 A5 8T Q5 8R Red Ignition Start Stop Button is an original part from the Switches, Controls, and Ignition Switches group, designed to operate the engine start system in select Audi models. The distinctive red finish enhances button readability, and the factory design ensures proper integration with the vehicle's electrical system.

Specifications and technical data

• SKU: 8K0905217C-1
• Mark: Audi
• Condition: Used
• OEM Part Number: 8K0905217C
• Substitutable numbers: 8K0905217C, 8K0 905 217 C
• Category: Switches & Controls

Vehicle Application and Function

The red Start Stop ignition button is responsible for controlling the electronic starting and stopping of the engine unit in Audi vehicles equipped with a keyless entry system. This component is installed in or near the center console, providing the driver with quick access to the start function.

As part of the Switches, Controls, and Ignition Switches group, the button works in conjunction with comfort modules and the vehicle's security system, transmitting a signal to the ignition control system. This ensures the correct sequence for ignition activation, engine start, and shutdown.

Construction and Features

The button features a clearly marked Start/Stop function and a contrasting red finish, which improves visibility in the cabin and facilitates intuitive operation. Its construction is based on a factory-supplied spring mechanism, ensuring a consistent travel and a perceptible actuation point.

The advantages of this solution include:

• Factory fit for the control panel in compatible Audi models,
• Consistent styling with other cockpit elements,
• Designed for integration with the vehicle's original wiring harness.

Benefits of Using an Original Button

Using an original red Start Stop button preserves the full functionality of the ignition system and compliance with factory safety parameters. Replacing a worn or damaged part with an original used component reduces the risk of communication errors in the electrical system and eliminates issues with unreliable button operation.

Furthermore, maintaining the original appearance of the control panel is important for both ergonomics and vehicle value – especially for premium models like the Audi A4, A5, or Q5.

Condition and Service Application

The offered button is from an Audi vehicle and is a used part, making it an attractive service solution when a damaged switch needs replacement while keeping repair costs reasonable. This type of component is particularly useful for work related to the ignition system, control panel replacement, or restoring full functionality to the keyless entry system.

If you are planning a comprehensive repair or upgrade of the ignition control area in your Audi and need other parts from the same group, such as function buttons, control modules, or ignition switch components, check the available parts in the Audi Switches, Controls, and Ignition Switches category.

Additional Information and Service Tips

When selecting used control components, it is advisable to pay attention to compatibility with the vehicle's equipment and the quality of the components themselves. For premium brands like Mercedes-Benz, using original used parts is a proven way to maintain a high standard of operation at controlled costs – you can find more on this topic in the article Used Mercedes Parts – Original Used Parts.

Using original switches and control components in Audi vehicles helps maintain electronic consistency, proper interaction with safety systems, and predictable operation of comfort systems, which directly impacts the daily use of the car.