- NTG5S1 (A/B/CLA/GLA// Series) - Plug & Play, simply insert into OBD port and activate in 1 minute - Unlimited use - Compatible with models: A-Class W176, B-Class W246, E-Class W213, CLA-Class W117, GLA-Class W156, -Class W166, Coupe W292, -Class X166, -Class W218 - Not compatible with C/GLC/S Series NTG5.0 and NTG5E 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 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 Auto is an app of theAndroid system, Android phone can use the Android Auto app.(But not all Android phone support Android Auto) - Color: Blue - Material: ABS - Package Contents: 1 x OBD activation tool