Grok in a Tesla
If your Tesla has Grok, it can use FamRelay by voice. Ask for the details you sent from the assistant you use at home. Or share something while you drive, with your other assistants or with your family.
How it looks
The assistant in your car is a different product from the one you plan with, so it starts out knowing none of it. FamRelay carries across the few details you approve. Nothing else from the conversation goes with them.
At home
In between
In the car
Illustrative, with fictional details. Your assistants’ exact wording will differ.
Just ask the question. In our use, Grok checks FamRelay by itself when you ask something it might hold the answer to, so you don’t have to mention it. If it doesn’t, say “check FamRelay”. It won’t announce a new item when you get in: FamRelay doesn’t send notifications yet.
Before you start
Not every Tesla has it. It depends on the car’s hardware, software version, region and connection. Tesla’s Grok page lists what’s needed.
The car must be signed in to the same Grok account you use on your phone. A connector you add in the Grok app is then available in the car as well.
You sign in to FamRelay with Google. Connect the assistant you use at home with the same account, and your assistants can pass details between them. The setup guide covers each one.
Set it up
You add FamRelay once, in the Grok app. That makes it available in Grok on your phone and in the car. Nothing is installed in the car, and there’s no FamRelay screen to open on the road.
In the Grok app on your phone, open Settings, then Connectors. Choose Custom connector and paste in this address.
https://api.famrelay.ai/mcp
On a computer, the same thing is at grok.com/connectors. Menu names move around as Grok updates.
When Grok opens the FamRelay page, choose Continue with Google, check the email it shows, then choose Allow. The Google account is what ties your assistants together, so it has to match.
If Grok asks for an API key instead, create an access key at api.famrelay.ai/account and paste it into the key box, never into the chat.
In the assistant that has the details, ask it to send them to your other assistants. It shows you exactly what it would send and until when. Nothing leaves until you say yes.
Start Grok the way you usually do in the car and ask your question. In our use it checks FamRelay without being told. If it doesn’t, mention FamRelay by name. To share, say what to pass on and who it’s for.
Examples are illustrative. Grok’s exact wording will differ.
Good to know
We use this ourselves, in one car. Here’s what we can and can’t promise.
Will it work in my Tesla?
We can’t say for every car. Grok in the car, and its use of connectors, are Tesla and xAI features. Whether you have them depends on your car, its software, your region and your Grok plan, and they can change. FamRelay’s side is the same in any assistant that can add a connector.
Will Grok tell me when something arrives?
No. FamRelay doesn’t send notifications yet. Grok looks when you ask it something: in our use it checks FamRelay without being told, but that’s Grok’s choice each time, so name FamRelay if an answer seems to be missing.
Who hears it?
Everyone in the car. Grok reads the details aloud, so send yourself only what you’re happy for passengers to hear. What Grok does with the details once it has read them is covered by xAI’s and Tesla’s terms, not ours.
Can I send something to the car only?
Not yet. An item you send yourself can be read by every assistant connected to your FamRelay account, not just Grok.
Can Grok read what my family shared with me?
Yes. Ask “What’s been shared with me on FamRelay?” and it reads those too, with who each one is from. As with any share, the sender can see when it was read.
Can I share something from the car?
Yes, by voice. Grok reads back what it would send and to whom, and sends only after you say yes. Listen to the read-back before you answer: a misheard name or time is easier to catch then than to correct later. If it’s wrong, say so, or tell it not to send.
What can I send, and for how long?
The usual FamRelay limits apply: a title, up to 20 short details and a note, kept for at most 90 days. Passwords, access codes and card numbers are refused. How FamRelay behaves today.
Keep your eyes on the road. Set this up while parked, and use only your voice while driving. FamRelay is independent: it isn’t affiliated with, endorsed by or sponsored by Tesla or xAI, and Tesla and Grok are trademarks of their owners.
Tried it in your car? Tell us how it went at hello@famrelay.ai.
Live in early access
Connect the assistant you use at home with the same sign-in, and invite the people you coordinate with.