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ncoffey8
User level: Level 1 (11 points)

Carplay issue after IOS 27 update

I just recently got my iPhone 18 pro max and since then with the new IOS 27 update my carplay has not been able to connect to my car (2020 Nissan Sports Rogue). I’ve looked up everything on what could possibly be the issue (updating my car, switching things in my settings, disconnecting and forgetting the car completely, resetting my phone, etc.). I even ended up buying 2 new chargers, thinking it might be the charger, and still doesn’t work (charging the phone works fine). I used to have an iPhone 13 pro max and didn’t update to the IOS 27 before my new phone. It worked perfectly fine. I’m just wondering if it’s the update or something else.

Posted on Sep 21, 2026 11:48 AM

8 replies

WheelieNick
User level: Level 9 (74,110 points)

Sep 22, 2026 1:20 AM in response to ncoffey8

Hi there


Please try this


Check Wired Accessory Settings: Go to Settings > Privacy & Security > Wired Accessories and make sure it is set to Always Allow.

Switch to a High-Quality Data Cable: Standard charging cables often lack data lines. Try a certified data-transfer cable—such as a high-quality USB-A to USB-C cable   a genuine Apple-certified data cord—as basic charging-only replacements frequently fail the iOS 27 data handshake. 

Disable VPN Software: Active VPN profiles heavily interfere with iOS 27 wired and wireless network data tunneling used by CarPlay. Turn off or temporarily uninstall any VPN apps. 

Perform a Full Network Reset: Go to Settings > General > Transfer or Reset iPhone > Reset > Reset Network Settings to flush out corrupted handshaking caches.

McGruffNC
User level: Level 1 (40 points)

Oct 1, 2026 4:33 PM in response to ncoffey8

I have a iphone 15 Pro Max and I’m on T-Mobile. My Carplay stopped working immediately following the ios 27 upgrade. Its buried pretty good… I found out the upgrade blocked my Carplay in the “Content & Privacy” section in the Settings “Screen Time” section. My fix was to go to Settings, Screen Time, Content & Privacy Restrictions, Other Features, Carplay and switch from Blocked to Allowed. Once Allowed, and you connect to your car, you may need to add your vehicle to Carplay to complete the process.

Ppbeach
User level: Level 1 (24 points)

Sep 24, 2026 6:11 PM in response to ncoffey8

Mine too all my phones do not work in my 2 hondas. Both wired. Dealer is receiving a lot of complaints too when i called my service advisor. Hope ppl at apple read the web.


before tech support chimes in, we did all troubleshooting and even hard reset my hondas infotainment system by the dealer. Carplay crashes within 30 seconds or so. Ios26 works perfectly on my work phone. Just any ios27 devices.

John Clack1
User level: Level 1 (65 points)

Oct 16, 2026 10:38 AM in response to John Clack1

Well I’ve been and matched the obvious setting on the 12 to my 18 Pro max. No success.

it may be a small thing but my CarPlay goes to wireless mode immediately, perhaps because the cable is not of sufficient quality .. or that is the default and only connectivity mode expected in 2026.

so three things for me to try.

Buy a new Lightning >C cable from Apple.

Reset the network.

Have a dig through the settings.


Wait for a software update for the 18 Pro Max?

Renagade187
User level: Level 1 (20 points)

Oct 6, 2026 12:05 PM in response to Ppbeach

Same here. 2020 Audi SQ5. Multiple cables, including a beats cable from the Apple Store. I’ve done all the suggested steps, CarPlay work intermittently.


Apple needs to push out a patch to fix this immediately. I have gotten little to no support from them.

John Clack1
User level: Level 1 (65 points)

Oct 16, 2026 9:59 AM in response to ncoffey8

Hmm. FWIW my iPhone 18 Pro doesn’t play with CarPlay BUT my wife’s iPhone 12 - with iOS 27.0.1 does.

The differences:

12 vs 18 Pro Max

USBA to Lightning vs USBA to USBC. But it does charge.

And who knows how many settings buried deep down! BUT the obvious ones helpfully given in the post do match.


I have tried the network reset - yet.

DLGRMI3
User level: Level 1 (18 points)

Oct 10, 2026 12:42 PM in response to Renagade187

Major problems in all cars. Not sure if it’s iOS 27 or my new 18 pro. I’ve tried everything! Still connects and then drops out

John Clack1
User level: Level 1 (65 points)

Oct 16, 2026 10:29 AM in response to McGruffNC

Thanks for that hint. However, it was already set to ‘allowed ’. I couldn’t find any other candidate settings. And thanks again for contributing.

Originally posted at discussions.apple.com/thread/256362139