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Apple Car Play won't boot up sometimes

18963 Views 17 Replies 11 Participants Last post by  TheLex
I'm using an iphone XR with an Apple Lightning cable.

If i turn the car off with iphone connected via Apple Car Play, and then start up the car again, the Subie radio won't recognize or boot up Apple Car Play. The only way I can get it to boot up is to either disconnect the phone from the lightning cable and 1) reboot my phone or 2) reboot the car radio.

I have a Premium with the stock radio. Any idea what's causing this?
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Sometimes I have to unlock the phone to get it to work. In the phone I will see a notification about a usb accessory and needing to unlock for it to work.
This has been posted about previously in the forum's technical discussion areas. You need to initiate CarPlay after the system is booted up...it will not recognize the device if you leave it plugged in.
This has been posted about previously in the forum's technical discussion areas. You need to initiate CarPlay after the system is booted up...it will not recognize the device if you leave it plugged in.
Yes, I realize CarPlay has to be initiated. The weird thing I'm noticing is that if I leave the phone attached to the lightning cable, CarPlay does not boot up. At that point even if I disconnect the lightning cable, CarPlay does not load when I reconnect the cable. I have to reboot the phone and/or the radio to get CarPlay to load.
Have this problem every and now then. I find if I start the ignition, and plug in phone right after (less then 3 seconds), it won't boot CarPlay. If I wait a few seconds after turning on ignition (like put my seatbelt on in between), it boots properly. 1/10 times, I can't get it to boot up no matter what I do, including turning the car off, locking doors, waiting, etc.

My wife has a 2019 Forester, and finds the exact same thing happens in the same way.

It's frustrating, but its the kinda thing I believe Subaru would blame Apple, Apple would blame Subaru.
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Have this problem every and now then. I find if I start the ignition, and plug in phone right after (less then 3 seconds), it won't boot CarPlay. If I wait a few seconds after turning on ignition (like put my seatbelt on in between), it boots properly. 1/10 times, I can't get it to boot up no matter what I do, including turning the car off, locking doors, waiting, etc.

My wife has a 2019 Forester, and finds the exact same thing happens in the same way.

It's frustrating, but its the kinda thing I believe Subaru would blame Apple, Apple would blame Subaru.

Yep, I have that same problem as well. I've learned to wait with agonizing patience. And also to disconnect the phone when I've turned the ignition off. Kind of a PITA.
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and you are on current software ? Rel_UA.19.01.70 = Rel_UE.19.22.70

last time i have seen same problems 5 month ago with Rel_U1.18.38.50 software
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and you are on current software ? Rel_UA.19.01.70 = Rel_UE.19.22.70

last time i have seen same problems 5 month ago with Rel_U1.18.38.50 software
I'm going to have to check the software release. I don't think it's been updated. Did you update it yourself, or did you bring it in to the dealer. Note this is for the Premium model non-HK radio.
After upgrading to IOS 12.4 a couple of weeks ago I find I am having no problems with CarPlay starting. In fact CarPlay finally started to work in locked mode without me always having to unlock the phone first.
After upgrading to IOS 12.4 a couple of weeks ago I find I am having no problems with CarPlay starting.
Teaser alert:
iOS 13 works very well with CarPlay. I’ve had a couple issues with CarPlay not working in the past but none since installing the iOS 13 public beta. There’s some really nice UI changes, too!
Teaser alert:
iOS 13 works very well with CarPlay. I’ve had a couple issues with CarPlay not working in the past but none since installing the iOS 13 public beta. There’s some really nice UI changes, too!
Ugh, I'm on IOS 12.4 now, and I still have the problem.
I'm going to have to check the software release. I don't think it's been updated. Did you update it yourself, or did you bring it in to the dealer. Note this is for the Premium model non-HK radio.
you can update it yourself only if you have NAV
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I'm using an iphone XR with an Apple Lightning cable.

If i turn the car off with iphone connected via Apple Car Play, and then start up the car again, the Subie radio won't recognize or boot up Apple Car Play. The only way I can get it to boot up is to either disconnect the phone from the lightning cable and 1) reboot my phone or 2) reboot the car radio.

I have a Premium with the stock radio. Any idea what's causing this?
This is a problem with CarPlay. Not Subaru. It happens on ALL cars.
As a rule, Start car, let infotainment system start, plug in phone.
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We’ve also had this problem since buying the car in 2019. If we plug the phone in before the car is turned on, Apple CarPlay will not register/work. Here is the solution we just tried that worked for us… 1: unplug your phone. 2: hold the power/volume button and the home button simultaneously until the screen turns off and reboot begins. This takes approximately 5-10 seconds. 3: agree to the terms of operation and allow reboot to complete. 4: plug in phone and CarPlay should work. Good luck!
2: hold the power/volume button and the home button simultaneously until the screen turns off and reboot begins. This takes approximately 5-10 seconds.
Only need to hold the volume button. Just hold for ten seconds (or skip counting, and just hold until the screen flashes black then shows the Starlink logo). That will also skip Step 3.

Also, you probably want to check your firmware version:
Settings->General->System Information

Just the RHEL number matter.
Just rebooting the head unit does not always trigger Car Play to work. I've had a few occasions where rebooting did not work to initiate CarPlay. I had to actually turn the vehicle off, let it sit for at least half a minute and then start it up again, and THEN plug the CarPlay cable in. Quirky.
Just rebooting the head unit does not always trigger Car Play to work. I've had a few occasions where rebooting did not work to initiate CarPlay. I had to actually turn the vehicle off, let it sit for at least half a minute and then start it up again, and THEN plug the CarPlay cable in. Quirky.
Usually if you just unplug the phone for a moment and plug it back in CarPlay will pop up.
Usually if you just unplug the phone for a moment and plug it back in CarPlay will pop up.
Yep...."usually"....but sometimes it doesn't. There's no rhyme nor reason to it.
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