S23 ultra - Android Auto stopped working after update to Android 15 / UI 7

[Frostomila]

Hello Samsung forum,

After upgrade of my Samsung S23 ultra from Android 14 and UI 6.1~ to newest Android 15 and UI7.0 , my wired android auto stopped working on two different cars, where ma S23 worked before, and my other phone or iPhone still working fine.

Cars just dont see the S23, possibly via BT for Audio that is fine.

AA wireless is NOT affected, but its not on my main car, problem is in wired AA.

Classic troubleshooting steps like were done:
- clear cache/storage of AA, Google, Google Play, Google services
- manual check for update of Play Store and security patch
- turn off/on/max for AutoBlocker
- on/off Block USB connections while locked
- on/off unknown sources in Android Auto
- safe mode did not helped
- Samsung US not helped ( referring to EU Samsung )
- Samsung EU not helped ( referring to that Lexus is the problem )
- Lexus EU not helped ( no new update )
- reset all google settings , storage, caches
- tried force install 14.4 of AA - no help => rollback to my "stock" 14.3
- different cables in different cars
- set in android auto - start AA always

Error message: no error message, phone do NOT connect to two different cars where it worked before
Were you able to connect to Android Auto prior to the issue? yes - two different cars, worked fine , after update to 15 and UI7 on Samsung - stopped working
Car / head unit make & model: Lexus UX 2024 ( with Lexus 07/2024 update, no newer update ) and China android radio - situation is same.
Phone make & model: Samsung Galaxy S23 Ultra
Android OS version: 15 , One UI Version 7.0 , Security update - May 1 2025, Google Play system update - April 1 2025
Android Auto app version: 14.4 and/or 14.3
Google Play services version: 25.19.33

[prophet007]

I believe it installed the dual Android auto because I have the secure folder enabled.

[Frostomila]

hi, I've had secure folder before the upgrade and after as well, and i did not managed to do copy now and dont have 2nd app now, still thanks for the tip. for now AAWireless 2.0 dongle looks like solid choice as workaround for two users of car, as the others china wireless dongles are piece of ***** as they are crashing with google assistant..

[XeDoX]

I assume nobody found a solution yet ? Any official news about this problem ? Thank you.

[Jeff313120]

Same issue since mogration to ONE UI7 on S23 , connection to BMW X1 U11 has became a nightmare. 

It's inacceptable from samsung to have created such a regression. we don't care about Bullshit AI if the basics don't work properly anymore.... 

[jimmyKozeng]

AAWireless also from Chinese OEM Manufacturer,   hahahaha

[Frostomila]

hi, iam not promoting AAwireless, but i have tried already 4 different dongles and in the end they were disconnecting, crashing, overheating, audio call/mic problems or mainly - google assistent making them crash - nothing like this experienced now for few weeks already with them, maybe main reason is that they have buttong to switch between two different phones? - so i am no longer furious about this Samsung incompetence to fix essential problems with our phones when with this dongle iam able to survive for now.

[Frostomila]

no oficial info anyhwere, i gave up, samsung locally pointing finger to my cars - they are not ready for android 15, but when i take for example A25 with Android 15 - all is fine trough cable as it should, it even looks like S25 or S24 do not have problems, only S23 (ultras?)....

[Members_lGlIAs8 · Accepted solution]

issue fixed!!!

wired android auto working again for me on two different cars with Samsung S23 ultra as before.

update installed for me at 23-June-2025:

so solution:

- check for update in settings => software update => download and install

- never buy samsung again, when nobody cares about us on support in US,EU,central EU, androidcentral,googleforums,facebook forums, samsung forums, car manufactuers, local samsung sellers..