NTG5S1 (A/B/CLA/GLA/GLE/CLS Series)Plug & Play! Just insert into the obd port than active 1 minute to work! Unlimited use! Compatible Models (COMAND NTG5s1):A-Class W176 production date from 01.2016 to 12.2017B-Class W246 production date from 01.2016 to 12.2017E-Class W213 production date from 01.2016 to 12.2017CLA Class W117 production date from 01.2016 to 12.2017GLA Class W156 production date from 01.2016 to 12.2017GLE Class W166 production date 01.2016 to 12.2017GLE Coupe W292 production date 01.2016 to 12.2017GLE X166 class production date 01.2016 to 12.2017CLS Class W218 production date 01.2016 to 12.2017C/GLC/ series S NTG5.0 and NTG5E are not supported! (You need to use the video interface and iponoe box to achieve. (If the head unit is old version, the function will not work normally or cannot be opened, you need to update the hedunit to the latest online version also it can not support AMG cars)Do not put this OBD tool into unsupported models or you have to take all the consequences. Thanks a lot. Instructions1. Rotate to ACC (do not start the engine)2. Connect this OBD tool to your car's OBD diagnostic socket. (position: under the handlebars near the A-pillar)3. Your car's screen will display DIAG and wait for you to restart.4. Your car's head unit will restart and enter the menu after 10 seconds.5. Unplug the OBD tool and connect your phone, follow the instructions to confirm! Function activated and perfect operation! Important Note1. You should make sure that the siri option of your iphone keeps the open status.2. You should use the original iphone charging cable.3. Carplay is Apple's IOS system application, only iphone can use Carplay application. (Ip5 or Ip5 above are supported)4. Android Auto turnkey is an Android system application, Android phone can use Android Auto application. (but not all Android phone support Android Auto)1x activation tool