Hello vs38,
It sounds like you've been unable to connect your iPhone 13 to your car. We'd like to help you get this resolved.
The first thing we recommend doing is checking with Acura to make sure your iPhone and iOS model are compatible with your car. This resource may help: Acura - HandsFreeLink. If they are compatible the next step would be to follow the troubleshooting guide in the resource you were reviewing: How to connect your iPhone, iPad, or iPod touch to your car.
- Restart your device.
- Go to Settings > Bluetooth, and turn off Bluetooth. Wait for about 5 seconds, then turn Bluetooth back on.
- Check the manual that came with your car for more information on how to pair with a Bluetooth device. Most cars require a phone setup on the car display.
- If you've connected multiple phones to your car stereo, try renaming your device: Go to Settings > General > About > Name, and type a new name. Then try connecting again.
- Update your device.
- Make sure that your stereo is using the latest firmware from the car manufacturer. Check your car's manual for more information.
If you still can't connect, contact Apple Support."
Thanks for using Apple Support Communities.
Take care.