How to re-enable HomeButton functionality in car mode? - Android Q&A, Help & Troubleshooting

Hi,
when i put my i9100 (Galaxy s2) into the car dock the car mode turns on.
Nothing else happens ... so far no problem.
But since Android 5.0 Google has remapped the home button for their CarApp when the car mode turns on.
That means, when i don't use Googles CarApp (which i don't like) then the Home Button is out of function.
What can i do to bring back the normal funktionality for the home button when i am in car mode?
... or what can i do to automaticaly disable the car mode?
Thanx for Infos on this isse,
Rooster

Doen't anybody have a solution for this issue??
All i found is this:
https://forum.xda-developers.com/android-auto/android-auto-general/interception-home-button-t3485594
and here:
https://stackoverflow.com/questions/2862629/overriding-home-button-for-a-car-home-replacement-app
... but it doesn't help me, because i don't know what to do with this informations.

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