Special Features: Start Stop cable for Stelvia 2017-2021. Note: Due to different production batches, labeling may vary. Do not specify a particular label. If this is a concern, please do not purchase. Function: Disables the auto start-stop feature. Installation: Remove the panel using a tool and connect the cable between the factory socket and the button socket. Setting: After installation, start the engine while pressing the brake pedal and observe for 3-6 seconds. Do not press the button. The button light will turn red automatically. The default setting ensures the start-stop function remains disabled without requiring manual deactivation each time. To temporarily reactivate the function, press the off button. 3 Modes Introduction: Auto-off mode: Each time the car is started, the start-stop function is automatically turned off. If manually enabled during operation, it will be disabled again after the car is turned off and locked. Memory mode: Manually switch the start-stop function once, and the state will be saved and retained, unaffected by power loss. Service mode (factory mode): Start-stop function is disabled by default, same effect as original vehicle setting. Color: Black Material: Plastic Package Contents: 1 x Cable Only the above package content is included; other items are not included. Note: Light reflection and differences in display screens may cause slight variations in color between the image and the actual item. Measurement error allowance is +/- 1-3 cm.