Apple CarPlay music issue after IOS 18 update

When I connect my mobile to my car which is Toyota and when I play music , the music plays on my mobile instead playing on car speakers, when I call someone and disconnects the call then the music plays on car speaker, every time I use to do the same to listen music after IOS 18 upgrade, my iPhone is 15 pro which I purchased in August 2024, please resolve this issue as soon as possible, I didn’t face this problem before the IOS update