Thanks for checking on that for us, Buickmom.
Do you use wireless charging with your iPhone elsewhere, such as at home? We just want to see how far down we can isolate this issue. If charging wirelessly works in other locations and with other adapters, we'll want to do a bit more checking, such as ensuring that your vehicle has the latest firmware installed. You can learn more about how to do that either in your owner's manual or by contacting the manufacturer of your vehicle. If wireless charging doesn't work via another adapter in a separate environment as well, it may be time to have your iPhone physically inspected. You can Find Locations that can help with that here. You can also Get Support from Apple directly with this link.