If Android Auto stopped working on your Galaxy Fold 3, there are a few things you can do to get it working again. One way is to force reboot your device. This will help you resolve minor conflicts and glitches. Another way is to install the latest security update for Android. This will fix any issues that may have been causing Android Auto to not work.
If the problem still persists after rebooting your phone, you can try to find the reason for the problem. First, check the charging port for debris. You can use a flashlight to check this. If it is dirty, you can use a cotton swab or toothpick to clean it. If the problem persists, you should contact the manufacturer of your device.
Several Samsung users have also reported that the app stopped working after updating to Android 7.8.6. The problem appears to affect users of dozens of different models. Google support team members have received over 100 reports of Android Auto issues. Currently, the issue is still being investigated, but the good news is that it appears to be a software update issue.
If you are still experiencing this problem, you should update to Android 12. This is the most recent update, and it is recommended to upgrade your phone as soon as possible. You can also try wiping the cache partitions to clear your phone's memory and stop recurring reboots.