Hello omarc131,
We have a great support article that might help with this. Please take a look at it here: Play music together in the car with iPhone - Apple Support. Make sure that all of these guidelines and steps are being followed to assure that this feature will work as expected.
"Before you begin
- The driver must have an iPhone with iOS 17 or later and be an Apple Music subscriber.
- Passengers must have an iPhone with iOS 17 or later, but don’t need to have an Apple Music subscription.
Host a SharePlay session
To use SharePlay in the car, you and your passengers each play a part.
- Begin playing music from your iPhone using CarPlay.
- A notification appears on the Lock Screen of passengers’ iPhones, asking if they’d like to join the SharePlay session. After they tap Connect, you receive a notification in CarPlay.
- Tap a passenger’s name, then tap to allow the passenger to choose and stream music from your iPhone.
- After you approve a passenger, they’ll have access to future SharePlay sessions until you revoke their access.
Use a QR code to join a SharePlay session
Passengers can also join a SharePlay session over Bluetooth by scanning a QR code.
- In the Now Playing screen in CarPlay, tap in CarPlay.
- A QR code appears on the CarPlay screen.
- Ask a passenger to open the Camera app on their iPhone and point the camera at the QR code.
- A button appears below the picture of the QR code on their iPhone to request a connection to the SharePlay session. The passenger taps the button, then taps Connect.
- Tap on the CarPlay screen to allow the passenger to join.
Use a QR code to add other passengers
If you’re a passenger using SharePlay to control music in a car, you can invite other passengers while the driver focuses on the road.
- In the Music app , open Now Playing, then tap at the bottom of the screen to show the SharePlay window, which lists all the participants as well as a QR code for joining the session.
- Ask a passenger to open the Camera app on their iPhone and point the camera at the QR code, tap the button that appears below the code, then tap Connect.
- The driver taps on the CarPlay screen to allow the passenger to join.
Leave or end a SharePlay session in the car
- If you’re a passenger: Tap at the bottom of Now Playing, then tap Leave.
- If you’re the driver: Tap End on the CarPlay screen."
We hope this helps. Let us know if we can assist with anything else at all. Take care.