Side Rubber Key Fob Button For Citroen Evasion Dispatch Synergie Xsara Xantia. These buttons are a direct replacement for damaged buttons on your Citroen flip key fob. (Please see key fob picture) They require the key fob to be opened up and the old damaged button removed and the new one fitted in its place. An easy repair for your damaged key fob. Thanks for looking.