First and foremost, the bug occurs on various phone models and happens when the battery charge level reaches 100 percent. Users who came across it explained that the only way to continue running Android Auto until they arrive at their destination was to keep the phone battery as low as possible when starting the drive.
Someone on Google’s forums explained that one way to prevent the disconnecting from happening is to install an application called Battery Charge Limit and actually configure the device to only charge to 99 percent. This appears to do the trick, as the phone no longer reaches 100 percent charge level and the disconnecting thus doesn’t occur.
The problem is that this app is only available for rooted phones, so if you’re using a non-rooted device, you won’t be able to use. Of course, there’s no replacement for non-rooted mobile devices, as apps can’t get system access to control battery charging.
“I have the same problem on android Lineage 7.1.2, but I can bypass this problem with app Battery Charge Limit, but you need rooted phone. Set battery charge limit to 99% and android auto is perfectly stable now. This disconnecting issue is very dangerous when driving and may cause accidents, especially in situations when you depend on navigation driving in foreign areas,” the user who found the workaround explains.
At this point, Google is still looking into the problem, but we don’t know when the fix is projected to land. A new Android Auto update, however, is expected later this month.