CarPlay with iOS 18 Broken

I have a 2024 Mazda cx3 and a iPhone 15 with the 18.0.1 update

It still works through the cord but it won’t wirelessly- the night before I updated my phone it was fine, and it works fine with my sisters iPhone 15 running ios 17.

Hopefully Apple can fix this asap

OMG! That totally fixed it! Thank you, thank you, thank you! My issue with CarPlay was odd: when I plugged my phone in, the sound would only come out of the center console speaker, none of the other speakers around the car. To temporarily fix that, I would have to ask Siri a question and then cancel. 50% of the time that restored all of the speakers in the car. If it didn’t, and I tried to do it too often, then nothing worked at all! This fix, however, instantly restored full accessibility to my CarPlay. Again, thank you!

Both phones operating iOS 18.

Swapped iPhone14 Pro Max to 16 Pro Max. CarPlay just wouldn’t engage as before.

Solution: Whilst in car - iPhone turned off, Car turned off. Switch iPhone back on, start car, connect iPhone to system - CarPlay now running as expected!!

Bill_apple_support wrote:

I think it's IOS 18 not your car because it is happening to so many different car makes both foreign and domestic.

If it's iOS, then why does Apple CarPlay work flawlessly on two of our cars on iOS 18?

just fixed my issue with wired CarPlay that would connect but just play on my phone speaker but CarPlay did show up on car screen and controls worked but played again only on phone speaker. So after updating to iOS 18 I did make vocal shortcuts under accessibility. Not voice control VOCAL SHORTCUTS. Disabled and deleted those shortcuts and it worked fine. Hope this helps someone

Can you quantify your assertion it is thousands of phones not working with CarPlay? Of course you can't. Not one person I know personally who is on iOS 18 is having any issues with CarPlay. I'm not doubting you're having issues, but your assertion it has to be iOS related, can't be substantiated. There are so many systems at play here, from so many car companies. And they may need to roll out an update to your infotainment system.

Try the vocal commands setting. Nothing worked for me but saw someone post about this here and it worked. Not voice control, vocal commands. If you have any set up, delete them and then turn that off. Hope this helps

This is exactly what is happening on my GMC Truck. The phone does play itunes sometimes through caryplay but then its only one speaker (mono). Called apple and they said they have been alot of complaints. Hopefully the fix is getting on soon

'

What finally worked for me was new data + power USB-A/USB-C cables and having both cars forget my phone and my phone forget both cars. Then connected with the cable, accepted CarPlay, and refused Bluetooth. Now I can use wired CarPlay from my iPhone 16 Pro running iOS 18.0.1 on both the vehicles and it seems reliable.

I have the same issue (with two separate phones-13 and 15 ) and have tried all the suggested remedies, including voice shortcut disabling.

The weight of evidence suggests an IOS 18 issue and needs to be fixed ASAP

I can confirm that it is cable issue.

my issue is CarPlay can be performed with wireless only. Wired CarPlay will not work at all. (Just do charging only but no CarPlay connected)

Even after updating to iOS 18.1 didn’t fix until I’ve swap the apple certified USB-A to USB-C cable. (Power + data transfer capable )

So, my opinion for wired issue, that’s worth to take a look at your cable.

You need to acquire a newer USB-A 3.0 to USB-C cable and CarPlay will worked wired again. The issue is your existing cable does not have enough bandwidth to charge the phone and support iOS 18 or 18.1.

Wireless CarPlay also stopped working for me on my Skoda Octavia after updating to IOS18 (and now 18.1) with my IPhone 13Pro, while my husband’s iPhone , which I haven’t updated and still has IOS 17, continues to work correctly.

Sounds like something you should address with the manufacturer of the car / infotainment system.

As already mentioned, try turning off your VPN if you have one.