NTG5S1 (/CLA/GLA// Series) Plug & Play Just need insert to obd port than active 1 to work 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 -Class W166 Date of manufacture 01.2016 to 12.2017; For Coupe W292 Date of manufacture 01.2016 to 12.2017; For -Class X166 Date of manufacture 01.2016 to 12.2017 For -Class W218 Date of manufacture 01.2016 to 12.2017 For C/GLC/S Series NTG5.0 and NTG5E are not support (Need to use video interface and iponoe box to achieve.) (If your headunit is 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 ) 't insert this OBD tool for unsupported models, or you need take all consequences. Many Thanks. Instructions: 1.Turn to ( do not 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 for restart. 4. Your car's headunit will restart and enter into after 10 seconds. 5. Unplug the OBD tool and connect your phone, the prompts to confirm Function activated and perfect running Important Notice: 1. Must that the siri option of your is keep opening status. 2. Must use original charging cable of your . 3. Carplay is an app of 's IOS system, only can use the Carplay app.(Ip5 or Ip5 above are support) 4. Android is an app of theAndroid system, Android phone can use the Android app.( not all Android phone support Android ) color:Blue Material:ABS Package Contents: 1 x OBD activation tools 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.