Apple XS Heats up while connected to carplay in my Toyota 2019 LE

I have been facing this problem since last year with a replacement by Apple.

I have been experiencing apple phone getting disconnected from carplay and apps becoming non responsive and super hot to handle when my phone is connected to apple carplay ( if i am driving for more than 20 min during a bright sunny day with phone connected to carplay ). It happens if you use the maps and handfree call together on car play

Earlier i though that this is a problem with my apple phone and contacted apple and they replaced it. However i started getting this problem again and again and i had to unplug my wire from my car's USB port and leave it for a couple of min till it gets back to normal .

This becomes quite dangerous when you have your maps on and heading towards your direction and suddenly this stops working.

Steps i have taken so far:

Bought a new original cable to see if this was a problem with cable. ---No Go

Remove Apple cover and screen protection to see if this helped.- No Go.

I live in bay area and which is still not that hot as on date. I experienced it today as well while using maps on car play along with a handsfree call.

I tested by not using the cable and only maps and handsfree call on the car mount and it worked fine.

So now where should i go to get this problem fixed ...APPLE or Toyota.