Hello Rjacks26,
Thank you for using Apple Support Communities. If you need help with steps and information on how to use CarPlay with your iPhone, then you can review the following resource here: Use CarPlay with your iPhone - Apple Support
However, it sounds like you need information on how to use your vehicle controls for CarPlay. If that's the case, we strongly recommend that you refer to you user manual for that specific information. If you don't have one, consider reaching out to the vehicle manufacture for assistance.
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Thank you for using Apple Support Communities. Best of luck.