NTG5S1 (A or B or CLA or GLA or GLE or CLS Series) Plug Play! Just need insert to obd port than active 1 minute to work! Unlimited use! Compatible models(COMAND NTG5s1): For A-Class W176 Date of manufacture from 01.2016 to 12.2017 For B-Class W246 Date of manufacture from 01.2016 to 12.2017 For E-Class W213 Date of manufacturefrom 01.2016 to 12.2017 For CLA-Class W117 Date of manufacture from 01.2016 to 12.2017 For GLA-Class W156 Date of manufacture from 01.2016 to 12.2017 For GLE-Class W166 Date of manufacture 01.2016 to 12.2017 For GLE Coupe W292 Date of manufacture 01.2016 to 12.2017 For GLE-Class X166 Date of manufacture 01.2016 to 12.2017 For CLS-Class W218 Date of manufacture 01.2016 to 12.2017 For C or GLC or S Series NTG5.0 and NTG5E 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 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. Instructions: 1.Turn to ACC( do not start the engine) 2. Plug this OBD tool to car's OBD diagnose socket. (position: Under the steering wheel near the A-pillar) 3. Your car's screen will display DIAG and waiting for restart. 4. Your car's headunit will restart and enter into menu after 10 seconds. 5. Unplug the OBD tool and connect your phone, follow the prompts to confirm! Function activated and perfect running! Important Notice: 1. Must ensure that the siri option of your iphone is keep opening status. 2. Must use original charging cable of your iphone . 3. Carplay is an app of Apple's IOS system, only iphone can use the Carplay app.(Ip5 or Ip5 above are support) 4. Android Auto is an app of theAndroid system, Android phone can use the Android Auto app.(But not all Android phone support Androi