The Apple Support Community will permanently close on November 20, 2026. Starting today, the site will no longer accept new posts and is available in a read-only state.

You can continue to find trusted guidance and support on the official Apple Support site.

We want to thank the community members who have contributed their time and expertise to help others with their Apple products.

ravilach Author

Level 1

34 points

CarPlay Disconnecting - iPhone XS Max

Dear all wise and all knowing Apple Community 🙂

I recently switched from my iPhone 7+ running iOS 12.0 to an iPhone XS Max running iOS 12.0.

I have a 2018 Audi S4 with the latest firmware from Audi.

With the switch to the XS Max, seems that my Apple CarPlay will get into a cycle of disconnecting and reconnecting

every 30 seconds or so.

I tried reverting back to my 7+ and works fine.

1. Siri is enabled.

2. The USB Lockout is turned off on the XS Max. The 7+ had the lockout turned on

but made no difference in the XS Max toggling on or off.

3. Swapped the cables to the one in the box of the iPhone XS Max and USB ports

in the car. This had no impact on the XS Max recycling the connection. The 7+ is uneffected

business as usual.

Not sure if this is tied in with the authentication issue with the charger. I go over wired carplay and the 30

second increment is suspect as that is my lockout time on the phone.

Curious if others are facing this.

Thanks!

-ravilach

iPhone XS Max, iOS 12

Posted on Oct 2, 2018 11:50 AM

270 replies

ravilach Author

Level 1

34 points

Oct 16, 2018 7:04 AM in response to djwslcuofu

Each one of these tidbits are pretty good. I am a software engineer and helps to track down under what condition is the root cause :-)

Wish Apple was reading this. Confused seems the thread was marked as resolved hmm how to unmark that.

ravilach Author

Level 1

34 points

Oct 16, 2018 4:58 PM in response to SpEe521

It’s a feature not a bug works as designed :-)

Same here what started the disconnect storm for me was I was on a call.

Really appreciate everyone sharing on here.

I would recommend starting a new thread can’t believe this was marked as resolved maybe was a mistake but prob takes an admin to un-resolve. Might help to link this thread.

Cheers!

-ravilach

jayshep

Level 1

19 points

Oct 16, 2018 7:03 PM in response to TCPM_1

Both. First I tried it as a restore from my iPhone X running 12.0. Then I wiped the thing and set it up as a new phone. Neither worked (nor did the replacement unit I got from the store). Just downloaded public beta 4. Will try again and report back.

Oct 17, 2018 2:11 AM in response to ravilach

Please my 3 months old iphone x didn't not on after getting hot and I switched it off immediately on the 9th of October 2018 uptill now I'm still unable to use my iphone x. Please kindly help me with customers care.

Oct 18, 2018 4:45 PM in response to ravilach

Also having this very frustrating issue. I have a 2018 Audi Q5 and the Xs Max. Upgraded from the iPhone 7 and never had this annoying constant disconnect issue. There doesn’t seem to be a pattern for what triggers the random disconnecting for me. Please fix!

SpEe521

Level 1

18 points

Oct 21, 2018 10:53 AM in response to wilcon2

Very interesting! Can't wait to hear if that works...and if it does, then what does Audi need to do to fix this? Or is it Apple??? VERY CONFUSING AND FRUSTRATING ON THAT END!

Fingers crossed that you found the problem...

Oct 25, 2018 4:29 PM in response to ravilach

I have this same problem as well. But mine seems to do it more Bluetooth than anything. Streaming media is fine. But phones calls are the worst. Every few seconds or so keeps going to privacy mode and then shows phone disconnected and then it reconnects. Seems to be an Apple problem as I drive a Ford F150

sapper17

Level 1

11 points

Oct 30, 2018 8:31 AM in response to ravilach

Just spent forever on Support with Apple. They will take no responsibility for the disconnection through Carplay. I asked for a new iphone X, as I had no problems with it. Lesson learned. DO NOT UPGRADE IPHONE until proof it works with Carplay

deggie

Level 10

168,267 points

Nov 8, 2018 11:59 AM in response to jtmcke

If you read the whole thread you will notice that no one has said they did which is why I made my suggestion to you.

Your interpretation of the NDA and your selected quote is not relevant. I agree that if Apple at the WWDC had stated that iOS 12.1.1 would have a fix for the Audi/iPhone XS problem then someone testing it could post here and say it fixed it. But since there has been no such public release of anything even related to this then posting here (a public place) would be a violation of their NDA. It would not go unnoticed by the hosts here who basically allow no discussion of beta software whatsoever except for how to roll back out of the program and advice to use the Feedback tool if they encounter a problem.

dkautter

Level 1

4 points

Nov 9, 2018 4:45 AM in response to ravilach

Adding to the growing crowd of very upset people. 2018 Audi A5. Had iPhone X with 12.1. “Upgraded” to iPhone XS Max - CarPlay disconnects more than staying connected. Extremely frustrating. No issues ever with X - CarPlay not staying connected with the XS Max. Impossible to maintain a phone call or use maps without disconnect. Apple - this phone was $1300 - come on do better this needs to be resolved. One of the main reasons I stay with iOS is CarPlay and now that reason is disappearing. Please address this issue as soon as possible.

Nov 10, 2018 3:13 AM in response to ravilach

I’m having the same problem! I switched to iPhone XS Max from 7+! I didn’t have these problems before! I did all the trouble shooting steps and my car is on the compatible list. It got worst with this new update!!!

deggie

Level 10

168,267 points

Nov 13, 2018 11:46 AM in response to QandnotU

No, that would not be helpful. And if you think it would and you have an Audi make sure you also flood their support site. All you would do is delay other people who are calling from getting any support.

jtmcke

Level 1

4 points

Nov 13, 2018 12:05 PM in response to QandnotU

I agree with us all contacting apple about this issue to increase its visibility. It’s not right that this issue is still lingering. Does the user bossing everyone around actually have this issue? Why is he/she even posting in this thread? Get a new hobby and stop lecturing everyone.

Level 9 support forum troll

QandnotU

Level 1

4 points

Nov 13, 2018 12:48 PM in response to deggie

You're Apple paying me $20 bucks if this gets solved with an iOS update. I hate to keep harping on this, but the USB port, chip set from the head unit, didn't change, and a phone that worked with this car on iOS 11, no longer works on iOS 12. But I digress.

Nov 20, 2018 9:37 AM in response to Emzi84

I thought that could be the solution...but no.

After 3 days with XS cable with no disconnections, my iphone XS Max has been disconnecting again with my A5 Sportback. This problem is really ANNOYING.

Please Apple, try to fix it asap.

This thread has been closed by the system or the community team. You may vote for any posts you find helpful, or search the Community for additional answers.

CarPlay Disconnecting - iPhone XS Max