Some usuful information about CarPlay.
note: Sorry if already written. tested in 10/16/2023 on Emira with iPhone15Pro(ios17.0.3), Japan region.
I tried all situations below.
1. Wireless CarPlay connection + Wired connection CarPlay + Satnav via Apple Map => works fine

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2. Wireless CarPlay connection + Wired connection CarPlay + Satnav via Google Maps =>
DEAD lt 5min. 
3. Wired connection CarPlay only + Satnav via Google Maps =>
works fine
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Which means, Wireless is Sxxxs!!

You may be able to play songs via wireless, but you will be stack in frozen ice if you use Google Maps.
*To connect only via wired, you can disable bluetooth of Emira to make sure your phone never connect via wireless, nor disable your iPhone’s bluetooth. But I tested only disabling Emira’s bluetooth.
*As you can find info here, there’s nothing you can do via CarPlay after freezing. What a system. Sadly, I couldn’t figure out which Emira or CarPlay has the problem of the issue.