Coolant not being held in expansion tank for long?!!! But no leak either. Coolant not being sent back to expansion tank!

[YKFR]

Check charge air cooler.

Common issue where coolant leaks into there

Hi,

How does one check the charge cooler? I'm assuming charge cooler is also called the intercooler?

And would the charge cooler being messed up cause my symptoms that I have listed above? Thanks for your help and input! Greatly appreciated!