This article explains how to connect an Amazon Alexa smart home device to your Vizio Smart TV. Additional information covers troubleshooting when your Vizio Smart TV cannot connect to Alexa.
VIZIO Support/SmartCast™ | How to Pair Amazon Alexa
The answer is yes, every Vizio Smart TV from 2016 onwards is compatible with Amazon Alexa. You will need to make sure that you have the Amazon Alexa app installed on your smartphone or tablet. The Amazon Alexa app is available on the Apple App Store and Google Play. In the app, you will want to make sure that you are fully logged into your Amazon account and connected to your Alexa smart home device.
Connecting your Vizio Smart TV to Alexa is a fairly simple process. You will need to have the Amazon Alexa app installed on your smartphone or tablet.
Make sure you are signed into the Amazon Alexa app and connected to the Alexa device.