Re: "CarPlay disconnects : experiencing issues with CarPlay not working with your iPhone 17 Pro it will disconnect after a few minutes. never had a problem with my old phone."
You may want to check that your iPhone's iOS version, and the car's stereo system's firmware, are both updated to the newest compatible versions.
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iPhone can be checked in Settings > General > Software Updates.
(Please remember to back-up first, if updating or upgrading iOS version)
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Car's firmware : Check the manual for update info., and maybe the car-manufacturer's support website.
There's also another discussion thread on a similar situation:
Wireless connectivity issue on iPhone 17 … - Apple Community
So, if all is up-to-date, and you still have the issue:
You may want to send feedback to reach those who work on the software at Apple.
It may help ensure Apple gets enough feedback on which iPhone models, and iOS versions are affected,
so that we may see an update that addresses the issue,
Apple's Feedback Website: Product Feedback - Apple