Special Features:Start Stop cable For Romeo Stelvia 2017 -2021 Note: Due to different production batches, the labeling is random, don't accept the specified . If you mind, please do not take pictures! ! ! ! Function: Close the feature of auto start & stop nstallation: Remove the panel with tool and connect the cable between factory socket and button socket. Setting: After installation, start the engine while stepping on brake pedal, observe for 3-6 seconds. Don't press the button. The button light will turn red itself. The default setting is that you don't have to close the stop start engine function manually every time. If you want it for a moment, press the off button to reactivate the function 3 modes Introduction: Auto-off mode: every time the car is started, the start-stop will be automatically turned off. If it is manually turned on in the middle, it will still be turned off after the car is turned off and locked. Memory mode: Manually switch the start-stop switch once, and the start-stop state will be saved and memorized, and will not be affected by power failure. Service mode ( factory mode): Start-stop treasure does not work by default, the effect is the same as the car Colour:black Material:plastic Package Contents: 1x Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.