Supported Models: 1.For MY2018 W205 C- and W253 GLC for CarPlay and Androidauto Activation via OBD2 2.C- W205 (SA154 code necessary) 3.GLC- W253 (SA154 code necessary) 4.SA531 COMAND Online (HU5) is not supported. (NOTE:Software upgrade after 10/19/2018 will block CarPlay OBD activation). version enable one OBD module to activate up to 10 , that is useful for the repair shop. the downside is that this OBD module cannot deactivate when plugin to the same car second time. Operation procedure: 1.Ignition ON. 2.Plug OBD2 module to the car OBD2 diagnostic port. 3.Notice the screen will show you HWID. 4.Wait until the system reboot - DONE Important Notice: 1. Must that the siri option of your for is keep opening status. 2. Must use original charging cable of your for . 3. Carplay is an app of s IOS system, only for can use the Carplay app.(Ip5 or Ip5 above are support) 4. for Android Auto is an app of the Android system, Android phone can use the Android Auto app.( not all Android phone support) Material:plastic colour:black Package Contents: 1 * Activation Tool Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.