If Android auto non apparel, 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. Feature: For A / B / CLA / GLA / GLE / CLS Series. 1. Activate by OBD2 Plug and Play, Easy to use. Just need insert to obd port than active 1 minute to work Unlimited use 2. Connect mobile phone with car only via cable. 3. Support Apple Carplay and Androidauto. (android auto only support car firmware version from 2016.9) 4. Original Protocol Communication. 5. for Mercedes via OBD2. Compatible Models: A-Class W176 Date of manufacture 12.2015+; B-Class W246 Date of manufacture 12.2015+; E-Class W213 Date of manufacture 01.2016+; CLA-Class W117 Date of manufacture 12.2015+; GLA-Class W156 Date of manufacture 12.2015+; GLE-Class W166 Date of manufacture 01.2016+; GLE Coupe W292 Date of manufacture 01.2016+; GLE-Class X166 Date of manufacture 01.2016+; CLS-Class W218 Date of manufacture 01.2016+; C / GLC / S Series are not support (Need to use video interface and iponoe box to achieve.) (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) Please dont insert this OBD tool for unsupported models, or you need take all consequences. Many Thanks. Important Notice: 1. Must ensure that the siri option of your iphones is keep opening status. 2. Must use original charging cable of your iphones. 3. Carplay is an app of Apples IOS system, only iphones can use the Carplay app.(Ip5 or Ip5 above are support) 4. 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) Steps: 1.Turn on the car ignition switch; 2.NTG5 S1 device connected to the car OBD interface; 3.Car display ``DIAG words, 10 seconds after the host restart; 4.Remove the OBD NTG5 S1 device. And then connect the phone (preferably using the original charging cable); 5.End debugging,all is ok; Package Included: 1 X OBD Activation Tool.