Install Tessie for Amazon Alexa
Open the Alexa Skill and tap
Enable to link Tessie with Alexa.
After linking Tessie, you can say things like
"Alexa, ask Tessie Control to start climate."
Works on any device with Alexa.
Create your own voice phrases
By creating a routine, you can create your own voice phrase to control your Tesla, like "Alexa, get the car ready."
See
Create a Routine for a complete guide.
Commands
For the full list of what you can do, see Amazon Alexa Commands.