iOS 11 broke car control of bluetooth audio

First, update to 11.0.3 - it fixes some audio problems.

I don't appear to have the same problem in my 2012 Prius, so it's something about your specific phone. I have a 7 Plus, so it's not exactly the same situation; it always could be the different iPhone model. When you unpaired the phone and the car did you do it on both ends? That is, delete the phone from the car's Bluetooth Settings as well as forgetting it from the phone (as Community Specialist jameson.h suggested)? Then restart both the car and the phone to clear out residual memory? Also, delete any other Bluetooth devices in the car.

Hey there, jkingx.

After reviewing your post, it appears that your iPhone 6 isn't working well with your Toyota Prius. You're only able to control the music being played through the phone itself. I'm happy to help.

Get help connecting your iPhone, iPad, or iPod touch with your car stereo -- Follow the steps provided below.

If you're using Bluetooth

1. Check your car stereo's user manual for how to pair with a Bluetooth device.
2. On your iOS device, swipe up to open Control Center, then taptwice to turn Bluetooth off and back on.
3. Restart your iOS device.
4. On your iOS device, unpair your car stereo. On your car's display, unpair your iOS device and any other devices. Restart your car and your iOS device, then pair and connect again.
5. Update your iOS device.
6. Install any firmware updates for your car stereo.
7. If you still can't connect, contact Apple Support.

Take care!

I have the same problem after upgrading to iOS 11—everything was working fine with iOS 10, but after upgrading to the new operating system I no longer can stream music via BT or answer my calls through the car system. The phone pairs up with my car system fine but, instead through car speakers, the sound is coming throigh the phone itself.

My friend is experiencing the same problems after updating to iOS 11 and pairing her iPhone with either my or her car, so —since prior to an iOS 11 upgrade everything was working fine—it is deffinitely the new iOS bug.

A further update on the matter: a few days ago I tried BT audio streaming in my car, and—to my surprise—it was working fine. Since then, I had no issues with getting my music to play through my car speakers. Hopefully, however it happened, the fix is permanent. After rolling back to iOS 11.0.1 from 11.0.3 (which, initially, did not fix the problem), I did no further updates. Now that everything seems to be working fine, i hesitate applying the latest iOS update as it may break things again.

My friend, who also had the same issue with her own iPhone, has told me that everuthing is now working fine as well.

YET again, Apple laughs at the people who made it famous, customers. If you spent as much time HELPING as you spend on repeating questions and trying to APPEAR helpful (very different to BEING it), I wouldn't be just yet another absolutely fed up ex Apple customer. I am now DYING to get over to Samsung and try something stable, and something where the company cares about its customers.

For years now I have avoided updating my apple devices, my friends with Apple gear always harp on about how "important" it is to update religiously like a sheep. I learned and burned on this years ago, and discovered the utter lack of rollback functionality. I am yet another person who detests ios11, its full of utterly useless bells and whistles, stuff that changes my entire workflow requiring me to go get another degree from the university of frustration on how to use this **** thing I have had in my pocket working nicely for a very long time. I fell for it, I updated. More fool me, but it won't happen again as I won't bother with Apple ever again. Being fairly short of cash, I can't change it immediately so I have to suffer this junk for a while longer unfortunately.
Does anyone know (by the way I am not asking you so called Apple people, as I don't even think you are people after reading your replies to messages, you are clearly robots or Siri pygmies) if its possible to roll back to IOS10?