CarPlay Disconnecting - iPhone XS Max

I can confirm after updating my xs max to ios 12.1.1 that the issue hasn’t been solved yet. After almost 2 months with the Xs, this is ruining my experience. What such an annoying issue!

(A5 Sportback 2018)

It’s been a while since I have posted to this thread. I have a 2018 Audi Q7. A couple of months ago it seemed that Audis were the only cars impacted by this issue, but all the recent posts point to this being a widespread problem across many different car manufacturers. As impractical as it is, the only solution that has partially worked for me is to connect the phone when it is at 100% charge. I managed to have Waze remain connnected during a three hour road trip when the phone was fully charged. That said, as soon as a call came in and I answered it, the phone disconnected a minute later, reconnected itself 30m seconds after that, and then stayed connected for a couple of additional hours. Unfortunately, even at a full charge, it appears that the only way to keep some stabiilty is to run one application at a time. Impractical and unacceptable. Btw, I have found that if the phone is below 90%, there is no shot of it staying connected for any length of time, even if CarPay is sitting at the menu screen idle. A formal acknowledgement of this problem by Apple (with the prospect of an imminent fix) would at least help to mitigate the frustration of its customers who keep trying onerous troubleshooting steps which don’t correct the problem or who are resorting to spending additional money to purchase hardware such as USB voltage meters which may have negative long term effects on the battery.

For those in Australia this USB voltage meter has fixed the problem for me

https://www.amazon.com.au/COOWOO-Multimeter-Chargers-Capacity-Banks-Black/dp/B0787TYM4C/ref=sr_1_1?ie=UTF8&qid=1544518157&sr=8-1&keywords=usb+tester

Agree that it's linked to power/charging management issue on the XS Max. When plugging in at full charge (or very near full charge) CarPlay works fine for me. When plugging in at a lower state of charge, the phone will connect and disconnect repeatedly but will eventually stay connected (once charge reaches near 100%). Super irritating. Would be nice to have someone acknowledge the issue.

2018 A4; XS Max

Just thought I’d toss in my 2¢ here. 2006 VW Jetta owner here (swapped in a newer VW headunit w/CarPlay), who also upgraded from a 7 Plus to an XS Max. My 7 Plus had not one single issue with CarPlay (a year and a half of usage since I upgraded my headunit), and the second or third time I plugged my XS Max into my car, it displayed the connecting message on screen for ~10 seconds (usually only takes one or two when it connects successfully) before it started playing my music, but with no video on screen. The only solution is to restart my phone and then plug it back in. Since then it’s a gamble whether or or not I’ll plug it in and it just works, or I’m forced to reboot and try again. Once it’s connected it does remain connected (thankfully) but I’d say easily more than 50% of the time I’m rebooting it for it to display on screen properly.

There may be more than one cause and hence more than one solution. On my XR power was not the problem - I put on a wireless charger and it didn't help at all. My problem was network connections coming and going (as they do when you're driving). I think iOS 12.1.1 is better, so check that you have that. Reset network settings to start clean there. VPN was causing trouble for me, so I disable that when driving. I also disable wifi while driving. With those done I get good behavior from CarPlay. Engaging airplane mode was a solid but impractical solution, but helped in diagnosis. Let us know if you find a solution.

I still had the same repeatedly disconnecting issue with my iPhone XS Max iOS 12.1.2 

I updated to the beta 12.1.3 last night. I have completed 6 trips today using carplay and have not had a single disconnection.

I am using an Apple OEM lightning cable and I did not change the cable or the USB port that I am plugged into.

Same issue here too.

I have done everything I can think of to get it to work and no joy. The phone just buzzes when plugged in. Sometimes it holds for 10/15, most times it 2 seconds.

I don't get the issue in my Wife's Golf GTD (2018 model), so I am assuming this is an Audi issue. Perhaps the USB ports are not putting out enough power for the Max?

I have raised it with my local Audi dealership, see if they can help.

2018 Audi Q5 + XS Max with same symptoms here. It dropped constantly after I switched out from a X. Happy to report that turning off WiFi in the car made CarPlay stay connected. (Also should nite I am not paying for WiFi, presumably others are not either in this case.) Thank you to those on this thread for posting.

Kind of 50/50 results for me since turning the WiFi Off.

Worked fine this morning, but not worked this afternoon.

This is the reply from my local Audi dealership

"The iPhone XS Max unfortunately is an unsupported device currently, so apple have not released the software to us for us to update our system, we are currently still on iPhone 7, with the been the case we cannot guarantee connective functions"

Phone: iPhone XS

Vehicle: 2018 Audi allroad (A4 platform) with firmware and updates in September 2018.

Same issue as described by everyone else--constant disconnections from CarPlay with almost immediate re-connection in most cases. I have changed cables, ports, and used different phones. It happens in every instance. I noticed the problem after an iOS update.

I would imagine it’s bigger than only Audi as well. Though to be fair, I’ve not had this problem in a variety of vehicles I’ve used as a rental while traveling for work. I’ve not had the problem in any of these vehicles:

Lincoln Navigator

Ford Excursion

Ford Taurus

Ford Edge

Ford Mustang

Ford Escape

Dodge Challenger

Chevrolet Malibu

Chevrolet Cruze

Nissan Altima

Volkswagen Jetta

Volkswagen Golf

Volkswagen Touareg

Volkswagen Transporter

Alfa Romeo Giulia

Range Rover Evoque

Volvo XC70

Volvo V60

Volvo V40

Volvo XC60

Mercedes-Benz MLK350

Mercedes-Benz B180

Mercedes-Benz C300

Renault Talisman

Renault Megane

Citroën C4

Opel Insignia

Have been having the same Car Play issue with 2018 Audi Q7 since switching to new XS Max (12.1.2) from iPhone X. Tried all resets, car and phone, no luck. Never had an issue with the Q7 and my iPhone X for almost a year. Now, the iPhone disconnects every 5 minutes, rarely connects unless I unlock it first. Very frustrating, and dangerous.

Same issue with 2018 Audi SQ5.

Tried all trouble shooting as described above. No success.

Sometimes I can go hours with a perfect connection. Othertimes the phone will connect and reconnect over 20 times in a 10 minute period.

I also drive a 2018 Volvo XC60 and 2018 Ford F-150 and haven’t encountered this same issue.

12 Pages of Carplay Disconnects - various models and always the same issues!

I tried everything already - even bought several different models of usb-meters.

No permanent success!

Apple - you really need to fix this asap.