2024 Jeep Wrangler Rubicon 4xe Galaxy s22 ultra Android 14 One UI 6.0 Pandora 2405.1 I'm having this issue as well. The volume....goes flat...for lack of a better term. I have it narrowed down to what is exactly causing the issue, at least in my case. I do not have a fix for it. It happens when plugged in via usb-c or on bluetooth, it doesn't matter. As soon as I get in the vehicle and start it (or put in accessory mode) my phone will connect to Bluetooth. As long as I play the media through the media player (fm, am, bluetooth, etc) and just leave it alone (leave screen off) it works as it should. As soon as the screen comes on, the volume is throttled. Everytime. So text messages, phone calls, emails, or any other thing that may "wake" your phone up, volume is throttled. Only way to get it back that I've found is to turn off the vehicle, open and close the door and then restart, all while keeping your phone screen off. This is super weird, but it is repeatable 100% of the time. Now, let's say you've done the above. Phone screen is off, you've automatically connected to your Bluetooth media and pandora starts playing (all the steps from above are in play). The volume is where it should be at this point, as you know if you open your phone screen (wake it) it will kill the volume. Now, with the volume where it should be, and the phone still "asleep", if you go to android auto from the media player (selecting it on the screen) the same thing happens (throttled volume), the exact same way and exact same level. 100% percent of the time. There are way to many things in this chain that can cause the audio volume to struggle significantly. Basically anything that will wake your phone up. When this happens, it just kills the subwoofer, like it's not even there. Functioning properly, level 19 volume in my vehicle will give you a good rattle. When the audio gets throttled, I have to turn it up to 35 to get the same level of "loud" but the sound just isn't there and the bass is non existent, comparatively. I have tried all the fixes. The data and cache wipes, the volume adjustments in system settings, the turning off of notifications, etc. Nothing has addressed these 100% repeatable issues with the volume. Please get this figured out with Android auto. It would seem to be something between you two. I have not had this issue with any thing else.
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