Setting up Chromecast for the first time? Google has an article to help walk you through the process.
Already have Chromecast set up but the casting icon is missing? Here are some things to try:
Please make sure that your mobile device and MotorTrend app have been updated to the latest version as a first step. After that it is recommended to make sure that there are no other apps running in the background that could be interfering with casting from the MotorTrend app.
Google has a lot of good support articles for Chromecast on their site.
It is recommended that your Chromecast device be powered with its own power supply and not the USB input of your TV or the HDMI port itself. Your mobile device, Chromecast device, and WiFi router should ideally be within ~15 feet of each other.
If your Chromecast has been set up, but you can’t see the cast icon? Most newer WiFi routers can have multiple networks at the same time. Commonly they will indicate if they are 2.4 GHz or 5.0 GHz. If you have multiple networks it is possible for your mobile device to be on the same router but a different network. Compare the network on your mobile device to the Chromecast (on the Chromecast home screen it will be in the lower left of the screen). Either update the network your mobile device is connected to or you can update the Chromecast with these directions.
Try clearing the MotorTrend app's cache and data. Exit the MotorTrend app and make sure it is cleared from the background. Go to Settings --> Apps --> MotorTrend app. Then press "Force Stop" and go to Storage. Press the "Clear Cache" button and then "Clear Data". Restart the MotorTrend app and relogin.
Same network, but it still doesn't work? Turn off the mobile device, WiFi router (this may also be your internet modem or gateway), and Chromecast. Keep everything off for 60 seconds. Then turn on the WiFi router and give it a couple minutes to come back up. Turn on the Chromecast, and then turn on the mobile device.
Try reinstalling the app. Uninstall the app, reinstall the app, and relogin. If you want to be very thorough, do the above process for clearing the app data & cache prior to uninstalling the app.
You may need to conduct a Chromecast Factory Data Reset and then re-set up your Chromecast.