iPhone 17 Pro Max Carplay Keeps Disconnecting

I just upgraded from the 15 Pro Max to the 17 Pro Max. My 15 rarely had any issues with CarPlay but my 17 I can barely keep CarPlay going for 2min before it disconnects and then refuses to reconnect. I’ve done all troubleshooting steps and nothing works.


Wireless Carplay


Troubleshooting done:

Reboot phone

Removed Car Connection

Factory Reset Infotainment System

Re-paired

Checked for updates

Disabled auto join of other WiFi networks.


It will connect but then shortly after disconnect and refuse to reconnect again.


This needs fixed as I use CarPlay everyday for my job.

iPhone 17 Pro Max, iOS 26

Posted on Sep 21, 2025 5:52 AM

Reply
Question marked as Top-ranking reply

Posted on Nov 10, 2025 10:03 AM

Hi Everyone,


I finally got so fed up with the problem being even worse after the latest IOS update, that I started a ticket with chat support. They ran me thru trouble shooting, then told me that they needed a senior tech to look at it. They offered me a phone call. I scheduled the phone call, and the two techs who attempted to call me kept disconnecting and couldn't hear me. After this, I chatted back to support and requested they set me up an in-person appointment in store, and they did.


I went to the Apple Store, they were so kind and understanding, and one of the guys who worked there told me he ad his wife BOTH experienced this and it was a software issue. They recommended a backup, and to do a "reset" through their computer which includes completely removing the OS from the phone and then reinstalling it from their master OS in their computer there. The way I understood what they were doing, is that it were as if I were building a new PC, and installing windows for the first time ever on a blank hard drive.


They told me that the software that I had even though its the same "numbers" probably has some bugs in it, and it is best to just start fresh from scratch.


When they did that, I was skeptical, but it fixed every single problem. And I notice that voice to text works better than it had before, and that everything is generally quick.


So a complete reinstall of the OS at the Apple Store is what I recommend. It's worth the 3 hours I spent at the store, because I spent way more time than that troubleshooting random ****. And a software re-install and repair is indeed different than just factory resetting the phone.

160 replies

Dec 17, 2025 10:47 AM in response to sheepdog7876

sheepdog7876 wrote:

Why would a WiFi chip cause issues for those of us on wired CarPlay? My wife and I are both having all these exact same issues described by everyone here but are both on wired CarPlay.

Even after 26.2, it’s so bad it’s unusable. We don’t make it more than 5min without it disconnecting or freezing the screen.

If it was a Wifi Chip problem, it would affect everyone using CarPlay wirelessly. But it's not. Since iOS 26 was first rolled out, we've had ZERO issues with CarPlay wirelessly or wired.

Dec 17, 2025 11:02 AM in response to Jowen825

I had this problem with new iPhone 17 and tried everything from installing new USB in truck from new truck software updates and more. Last thing I tried was Bluetooth dongle and it works great. Always connects rapidly, stays connected and easy to use. Best money ever spent. And no this is not my product, but thought it might help someone avoid frustration. Jemluse Wireless CarPlay Adapter... https://www.amazon.com/dp/B0DGV4T6BK?ref=ppx_pop_mob_ap_share

Dec 17, 2025 12:48 PM in response to Jowen825

For anyone with an IMI-1000 this is the software update. I have it installed in a Mini Cooper S.


Please follow these steps


  1. Download this file : https://drive.google.com/file/d/16E7kFk5spG_rXUi6XUcjgHDV9T6D_ZW8/view?usp=drive_link
  2. Extract with winrar to a PC : WinRAR download free and support: WinRAR Download Latest Version
  3. Drag the contents of the extracted folder onto an empty FAT32 formatted USB stick
  4. Start Car
  5. Switch to carplay interface
  6. Insert USB stick
  7. Follow this video : https://youtu.be/O5ADqmo-Mio
  8. Make sure after the update the software version shows IA_xxx not box_xxx
  9. If it shows box_xxx then you need to re-run the update and make sure the stick is pulled out at the right point.


Dec 18, 2025 2:28 PM in response to lobsterghost1

I'm having disconnection issues with my iPhone 17 Pro connected via a USB-A to USB-C cable on my Nissan Leaf. The cable is high quality (it came with my Samsung T9 SSD). I've been having the disconnection issues while using Apple Maps and navigating through Boston's maze of tightly packed streets, all populated with those legendary Boston drivers. It is outright dangerous to have your navigation constantly interrupted with no place to pull over every time this happens. It happened to me 4 or 5 times last night.

Dec 27, 2025 9:03 AM in response to Juliecatxo

I was having the same problem. Background: Switched from iPhone 14 Pro to 17 Pro.


CarPlay worked fine in both my car and my wife's car on the old phone. When I got the 17 Pro, I was getting disconnected from CarPlay every few minutes in MY car. No problem in my wife's car. After trying different solutions (update iOS, use cable from wife's car, fiddle with WiFi, delete and re-add my phone, etc.), I ended up getting a data-rated cable (1.5m USB-A to USB-C Insignia from BestBuy). Using that cable SOLVED the problem (or, more accurately, no disconnects in my 20-minute drive home).


This kinda makes since, since I was moving from Lightning to USB-C. I suspect USB-C is less-tolerant of interference. That said, CarPlay works fine in my wife's car using a low-cost Amazon cable is confounding.

Dec 27, 2025 9:04 AM in response to Jowen825

I was having the same problem. Background: Switched from iPhone 14 Pro to 17 Pro.


CarPlay worked fine in both my car and my wife's car on the old phone. When I got the 17 Pro, I was getting disconnected from CarPlay every few minutes in MY car. No problem in my wife's car. After trying different solutions (update iOS, use cable from wife's car, fiddle with WiFi, delete and re-add my phone, etc.), I ended up getting a data-rated cable (1.5m USB-A to USB-C Insignia from BestBuy). Using that cable SOLVED the problem (or, more accurately, no disconnects in my 20-minute drive home).


This kinda makes since, since I was moving from Lightning to USB-C. I suspect USB-C is less-tolerant of interference. That said, CarPlay works fine in my wife's car using a low-cost Amazon cable is confounding.

iPhone 17 Pro Max Carplay Keeps Disconnecting

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