Users who have recently updated Google Maps may encounter an issue with the color scheme automatically switching when using Android Auto.
Theoretically, through the Google Maps and Android Auto setting, users can get three modes of Google Maps color scheme on the head unit, namely auto, day and night.
However, after many users updated Google Maps, the color scheme got out of hand. Some users have the map locked in night mode, others in day mode. Regardless of which mode it's locked in, it poses a security risk to users. If it's in night mode during the day, users may not be able to see the map clearly. If it's in day mode at night, it can be too distracting.

Reason for automatic switch failure
According to many users, it can be confirmed that the culprit behind the Google Maps night mode malfunctioning in Android Auto is Google Maps . The most problematic Google Maps versions are 11.33.0 and 11.33.1. Any users using either of these Google Maps versions may be stuck in dark or light mode.

Solution
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Restore Google Maps to factory settings.
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Remove Google Maps and install an older version
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Turning the headlights/dashboard lights on and off
If everything is set to automatically switch color scheme modes, turning your headlights/dash lights on and off will force Google Maps to switch to the correct mode. But every time you use Android Auto again, you encounter the same problem.
Summary
In the Google Community, a member of the Android Auto team said the issue has been escalated to the team, but didn't say when a fix would be available. Hopefully, the Google Maps automatic day/night mode issue in Android Auto will be resolved in the latest version of Google Maps.

