We've released in v1.9.0 a new Start/Stop feature. You can set up a Carsifi adapter to work only if your car head unit or another Bluetooth device is connected to your phone. Some cars powered USB sockets when the engine is off. This feature will help improve the experience with the Carsifi adapter and Wireless Android auto.

How to use:
1. Please, make sure that you have installed firmware v1.9.0 and up. 
2. Open companion app -> Start/Stop features -> Start/Stop based on car Bluetooth name -> Select your car head unit Bluetooth name from the list and click Save.
3. Enjoy Wireless Android Auto