Audi A6 C8 Engine Start Stop Switch Button Petrol TFSIe DRYA 4K2905217C

The Audi A6 C8 TFSI e Engine Start Stop Button is an original control element designed for petrol-powered models, responsible for directly starting and stopping the engine unit. As part of the Switches, Control Elements, and Ignition Switches group, it ensures seamless integration with the vehicle's factory electronics and maintains interior ergonomics in line with Audi standards.

Specifications and technical data

• SKU: RHD-4K2905217C
• Mark: Audi
• Condition: Used
• OEM Part Number: 4K2905217C
• Substitutable numbers: 4K2905217C, 4K2 905 217 C
• Fuel type: Petrol
• Part type: Push Button
• Category: Switches & Controls

Purpose and Function in the Control System

The Start Stop button in the Audi A6 C8 TFSI e plays a crucial role in operating the ignition system and the convenient starting of the petrol engine. The element works in conjunction with factory safety systems and the key authorization system, ensuring that the engine start and stop process is controlled and predictable.

As a component integrated into the center console, the button is responsible for:

• transmitting a signal to the control modules responsible for starting the petrol engine,
• operating the engine shut-off function in stationary mode,
• maintaining consistent operation with other control elements in the cabin.

Compatibility with the TFSI e Petrol Unit

The button described has been designed to work with the Petrol TFSI e powertrain, meaning it is adapted to the specifics of the petrol engine and hybrid solutions used in the Audi A6 C8. This ensures correct communication with the vehicle's electronics, and the response to button presses remains predictable and repeatable.

Selecting a component compatible with the fuel type is important for:

• the correct execution of the start sequence,
• cooperation with energy management systems,
• maintaining factory operating parameters of the engine control system.

Characteristics as an Original Audi Element

The Start Stop button is a part from the Audi OE line, which translates to factory-perfect fit for the control panel and compatibility with the wiring harness and control modules in the Audi A6 C8. Original manufacturing preserves the cohesive look of the cockpit and reduces the risk of communication issues within the vehicle's bus system.

As a used element, the button offers an economical solution for replacing a damaged or worn component while maintaining near-factory parameters, without the need for lower-quality aftermarket alternatives.

Condition, Installation, and Service Aspects

The product is offered in used condition, meaning it has been removed from a dismantled vehicle and verified for its suitability for further use. Such elements are often chosen by professional workshops and discerning users who seek original parts at a reasonable price.

Due to its design for the Audi A6 C8, the button is installed in its original location, utilizing the existing electrical system and mounting points. In practice, this means:

• no need for wiring modifications,
• preservation of the original appearance of the center console,
• easier diagnostics in case of future malfunctions.

Expanding the Control Zone in Audi

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

Safety in Selecting Used Components

When replacing control elements in a vehicle, it is important to pay attention to their origin, compatibility with the specific model version, and technical condition. For used components, verifying their functionality in the donor vehicle and compatibility with the target car's electronics is particularly crucial. Additional tips for safely choosing used parts can be found in the guide Used Braking System: How to Safely Choose Discs, Calipers, and ABS?, which discusses universal principles for assessing the condition of aftermarket parts.