Activate by OBD2 Plug and Play, Easy to use. Connect mobile phone with car only via cable. Support Apple Carplay and Android auto.(android auto only support car firmware version from 2016.9) For Mercedes NTG5.1 via OBD2 If Android auto non applicate, push star button near menu roller. in second line press add application (+ icon). scroll the menu until find "android auto". click on it. now extra menu is on main menu option Update newest software must with last version with Connect 5th Online !Need online account and newest software DVD disk.C/GLC/S Series NTG5.0 and NTG5E are not support! (Need to use video interface and iponoe box to achieve.)<br><br>(If your headunit is old version, the function will not normal work or can not be opened, you need update your hedunit to latest version online also it can not support AMG cars) Please don't insert this OBD tool for unsupported models, or you need take all consequences. Many Thanks. Note: Must ensure that the siri option of your iphone is keep opening status. Android Auto is an app of the Android system, Android phone can use the Android Auto app.(But not all Android phone support Android Auto) Carplay is an app of Apple's IOS system, only iphone can use the Carplay app.(Ip5 or Ip5 above are support) Must use charging cable of your iphone . Note: Installation guide not included, we strongly recommend you seek professional installation. Please check as much as possible to make sure the item is what you need. Colour:Blue Material:plastic<br><br>Package Contents: 1x Car Diagnostic Tool<br><br>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.