Goal Zero Overheating - hot battery help/thoughts?

My Goal Zero Yeti 1500x (GZ) is overheating on a daily basis. GZ safe operating temps are 32-104F. My truck bed is well over 120F. I have 200W of solar input, running a Dometic CX45.

The GZ throws a high temp alarm and kicks on the fans all the way.

Things I’ve tried:

  • Moving the GZ away from the hot air output of the Dometic
  • Disconnecting solar all day so the charge function produces less heat
  • Elevating the GZ
  • Cracking open a panel by locking one latch open

Any thoughts on how to fix this? Are other people experiencing these kinds of issues?