Apple CarPlay Not Working in iOS 18.0

I turned off VPN on iPhone and CarPlay connected by usb lead is now working again

Solved - Had this problem. It worked on my iPhone 13 Pro Max but not by the usb c cable to my iPhone 16 pro max. I got a new USB to USB-C cable and Vola - it worked

Carplay now working with IOS 18. I posted a few days ago about my phone not working with CarPlay. I forgot all phones in my car’s system. Forgot connection in my phone and restarted my phone. I no nothing about car computers but I felt like the computer needed to “restart” the way I did my phone. I did not try connecting my phone to CarPlay again for two days. I was still connecting via Bluetooth to the car’s software so that I could listen to music . Decided to try CarPlay again on day 3. CarPlay disclaimer came up to accept terms and conditions. Has connected with no issues last two days. If you try it and it works, please let me know so I know It’s not a fluke.

Hi guys!

If you have WiFi connection in your car when connecting CarPlay, then you need to do the following:

• open WiFi settings on your phone
• find the car WiFi network
• open it and turn "Limit IP address Tracking" toggle off
• also in section "Private WiFi Address", select value "Fixed"

I had the same issue - couldn’t connect via cable on IOS 18. It worked when I turned VPN off.

I turned "Vocal Shortcuts" Off , and everything works fine now. Apple needs to fix this.

Update!

I turned off voice shortcuts as somebody suggested, and everything is working fine with a wireless CarPlay adapter!

The only downfall with the adapter is there is a bit of a lag ~ I still have to try a regular USB to C cord. But I believe that this fix the issue.

Is this an OEM head unit or aftermarket? Have you checked to see if the head unit has any firmware updates (depending on how old it is or the manufacturer you may be able to check for OTA updates. Otherwise you might have to check their website for any firmware updates and instructions on how you would install it). I personally have not experienced any issues with CarPlay and its OEM head unit in my vehicle with iOS 18 (the wireless version or wired one). Last year when iOS 17 came out I had issues after the 2nd update meant to address problems for 1-2 specific car brands ended up causing issues for a lot of other brands that were addressed with another update. That particular situation does not seem to be what’s going on so far this year though so as it stands the first steps are to make sure there isn’t a firmware update for your head unit. Also check forums for your particular situation (if it is an OEM head unit and there is a problem that affects everyone you will see a lot of chatter on the forums for your vehicle brand. If it is an aftermarket unit checking the forums for that brand would do the same).

My connectivity from my iPhone 14 to my 2023 CRV Apple Carplay was very intermittent after I upgraded IOS 18. Just upgraded to IOS 18.0.1 and now it connects great!

for me it worked by modifying car play settings at my Mazda CX5

Settings-connectivity settings - smart phone connectivity settings-apple car play settings- choose paired phone and switch to always enabled.

i hope it helps

Someone on this board suggested I turn off “vocal shortcuts”. This solved the issue for me.

Yes it is working again. I've reset all network settings!

Interestingly, I had a ticket in for my Shared Audio not working after upgrading to iOS 18 as well as the issue with CarPlay - Turning off Vocal Shortcuts has resolved the issue.

This is what fixed it for me:

Go to Settings

click Accessibility

Turn off Vocal Shortcuts

Thanks @Jackdav9. Allowing content and restrictions solved the problem right away. It was defaulted as disabled in iOS 18.