Show the sleep button on all screens.
It’s too hard to scroll back to sleep- map stays on unless it’s disabled and will drain data and power. Make it easier to turn off.

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Marco commented
Right now its a pain to put the app in standby mode. Instead Add the standby button on main screen so that its easy to put app in standby mode when navigation is not being used. Or even better remove the need to put app instandby mode. When navigation is not used minimizing or switching to another should put the app in standby mode automatically.
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Jeff Otton commented
Carplay makes my phone overheat on carplay. Its done this on many phones (Iphones) over the years and on long motorway journeys go back to the home screen and the issue goes away and the phone cools down. Its happened on multiple head units too (android). A sleep button for the map display might help this.