Carplay not working with AI Enable iPhone with IOS 18

I work in a car dealer. For the past few weeks, customers whom upgraded their iPhones with IOS 18 which also changed (Siri) to (Apple Intelligence & Siri) in the settings; They are not able to use Apple CarPlay and instead, got "AppleCarplay connection Error" messages.

Despite doing all possible remedies suggested in all the discussions, it still does not work.

Today, I tried using IOS 18.7 and the problem is still not resolve. Apple, this is no good.