Compability: This Auto Start Stop Eliminator fits for Audi 2017-2024 A4/2017-2024 S4/2018-2024 A5/2018-2024 Q5 SQ5 Parcel comes: 1* Auto Start Stop Eliminator cable (including disassembly tools) Installation: Remove the central control panel of the car, and connect the cable to the socket according to the instructions of the installation picture. After installation, start the car immediately, and the button light will automatically turn red after 3-5 seconds. Function: After installation, restart the car and the auto-off button will automatically turn on. The default setting is that you don't have to manually turn off the stop engine function every time. Once you press the close button, a-off function will be reactivated. No module and energy storage device inside, no error code after install. Start stop disable/delete/Eliminator cable, turn off the A-OFF function automatically after install this item, very good product for protect car battery.