1Fitment: Automatic start stop cancel device is suitable for A4 S4 B9 2016?2023, suitable for A5 S5 F5 2017?2023 models, plug and play, no error codes after installation, will not affect any other functions. 2Important Car Device: Automatic start and stop will lead to poor operation of air conditioning, will accelerate the aging of spark plug, frequent start and stop will seriously shorten the service life of the battery, use eliminator to reduce this situation. 3Function: After installation, restart the car, the A Off button will turn on automatically, you don't have to turn on the stop function manually every time, if you want the auto stop function to work again, just press the A Off button to reactivate it. 4Installation: This cancel cable is installed between the auto start stop switch and the car wiring harness, simply remove the central control panel of the A Off button and connect the two ends with this cable. 5Premium Material: Auto start stop disable device is made from upgraded premium Abs and metal material, wear proof, impact resistant, high temperature resistant, not easy to break.