Hey all. Like many of you, I was very frustrated with the fact that my new Prius would automatically play media from my phone immediately after connecting my Nexus 5X via Bluetooth. After finding unacceptable answers online, I eventually figured it out. This will work on any recent Android phone. Install Trigger from the Play Store. Create a new task (the + button on the bottom right). On the next screen, press the + button on the top-right corner and to create a new trigger. Select Bluetooth, and then choose "when connected to" and choose the Prius from the list of devices (it may ask you to enable BT first). Click Next, and then done. Back at the trigger screen, press + to choose an action. Under Media, choose the "stop media playback" checkbox. Click Next. Name your task, Then click Done. That's it! Now, when you connect to your car BT audio, it will immediately kill the autoplay feature! Hurray. PS if you have a phone with NFC, you can use Trigger to do cool stuff. I set mine to turn on BT/disable wifi and connect to the Prius; if I tap again it turns it off. Pretty cool!
