Agree with everyone that has posted already. I have done all the troubleshooting as previously posted too. I have a 2018 Accord and CarPlay has not worked since Day 1. I have tried multiple resets, cables, and iPhones, and it never works consistently. The only time it may work is when the phone is connected to the car before the engine is turned on. If it gets disconnected mid drive, it will not reconnect at all.
I brought the car to Honda. One of the guys tried his iPhone and it didn’t work in my car (he has CarPlay and it works just fine in his car). He told me to bring it in overnight for a fix. When i was able to do so, the clowns at Honda only tested an Android, which worked, and never tested an iPhone. They returned the car to me saying nothing was wrong with it and i have to fix it myself with phone technology support (wasn’t that their job?).
That is when they told me connectivity issues started with iOS 11.2.6 in February. I called again and told them i bought my car in 2017 and they then said it actually started with iOS 11.1 in October 2017. The problem here is that the technicians don’t have a straight answer. How can I Call the same number twice and get two different answers about the problem? The problem here is that nobody told me, or any of you all, that there are connection problems with CarPlay before we bought. And I, like many of you, got the car for CarPlay. These are deceptive sales practices in my opinion.
I write this to say that this is not all Apple’s fault. My iPhone works in other cars. My other friends with iphones and Carplay have functioning systems. The Hondas are defective, and don’t let them tell you otherwise. I am going to demand that they terminate my lease.