can i use carplay to operate my garage door

Hello, innman.

Thank you for using Apple Support Communities.

I understand you want to know if you can use CarPlay to open your garage. I'd like to help. Check out this article which has some details to help you with this: Use CarPlay with your iPhone

"Use Siri to control CarPlay

Depending on your car, there are two ways you can use Siri to control CarPlay: 

• Press and hold the voice-command button on your steering wheel. Then ask Siri a question or to do something.
• Touch and hold the CarPlay Dashboard or CarPlay home button on your touchscreen. Then ask Siri a question or to do something.

Siri also makes suggestions in CarPlay for what you might want to do next, such as drive to your next meeting. Siri Suggestions and CarPlay work seamlessly to keep your favorite apps at your fingertips.

If you have HomeKit-enabled accessories — like a garage door opener — you can use the Siri suggestions that appear on the CarPlay dashboard, or simply ask Siri to do things like "Open the garage door" when you get close to your house".

Set up your HomePod, Apple TV, or iPad as a home hub

Cheers!