IGROK

Solution found!! In case your Android Auto randomly disconnects after 5-25 minutes of driving. Possibly you have issue with too many sound alerts/notifications disrupting USB. In my Case: When "drive assist" notifications are set to "sound & visual" - after some beeping my Android phone (connected via USB) - gets disconnected. Fix: When I switch Sound Notifications OFF - then no disconnections happen. (Tested after hours of driving) Reason: Beeping sounds (car alerts) - override sound coming from USB connected Android phone. When too many beeping happen at once (eg speed limit, or car in the blind spot) - USB connection gets disrupted. I didn't debug USB connection itself, but I'm certain that enabling trace can show the problem. (Didn't had time to debug). What I've tried and didn't help: - Updated Multimedia system - Used like 8 usb cables including USB 3.0 Gen 1. - Switching off any battery optimization (on app level and phone level) - Tried 2 other Android Auto devices (Motorola and AAwireless) - nothing worked. - Switching my phone to Dev mode - and enabled "don't sleep when connected via USB" My phone is Samsung Fold 5. But 2 other Android devices get disconnected too - so in this case it is not Android Auto but Lexus Software. Hope this helps somebody with same issue. P.S. I've submitted my findings to my Lexus dealer - so it could be registered as a bug with Lexus software team

Thanks David for advice. I did try AAwireless and Motorola MA1 - but all fail. They get disconnected the same. Then I eventually found that the issue is the Sound Notifications/Alerts. RX 2023 model - does a lot of beeping. It looks that after multiple beepings (because they need to sound over the music coming from Android phone) - the USB gets disrupted. I'll explain in next post with more details

Nothing works. Tried multiple settings on battery and etc. Now I'm trying other Android devices to see if ANY can work with Lexus RX 350h via USB. - Samsung Fold 5 - has random drop-outs - AAWireless - disconnects and unable to re-connect

No, it did not solve the issue. I even tried to use my phone on a Huyndai (Android Auto connected via USB) - worked flawlessly. It's now obvious that RX 2023 software doesn't support properly Android Auto even via USB. I got a message that there is an update to Multimedia unit. But who knows whether it fixes anything

Yes, Samsung Fold reverts Android Auto to "Battery Optimized" automatically. Had to switch off "Put apps to sleep" function. Might fix this problem. (will update on results)

So it looks like Samsung Fold is putting Android Auto to sleep (even when it is connected via a wire). I had to put AA app in Battery setting to "Unrestricted" - it worked, but then the phone changed it to "Optimized" setting. Not sure why it did that. Will keep monitoring. BTW, I know that RX phase 5 got a new update to its multimedia software this week. Will be asking the Dealer to update it. Will see if Bluetooth connection for Android will become available.

Thanks Jason I'll take a look into USB-C port issue. Regarding cables - tried Anker and Ugreen (usually they're of high quality) I have another suspect - is that Android is killing Background Apps sometimes. Especially those consuming lots of energy. There is a "Battery Usage" setting - that controls apps running in background. Android Auto app - was set as "Restricted". Have switched to "Unrestricted" now. But haven't tested it yet. Will check it later BTW, thanks for sharing your knowledge. Judging by the lack of answers - not a common issue. So probably it's my phone

Android Auto disconnects randomly on Lexus RX 2023. It works for 15-30 mins - and just disconnects. (Very annoying on a longer trips to re-connect the phone 5-8 times) Anyone had this issue? Maybe update is needed? BTW.:Have tried 3 usb cables already. All behave the same. Don't see any action pattern that causes this issue. Going into settings + devices -> you can re connect Android Auto. (But on a longer journeys - experience is very bad.)