Suspension dump

[Paccardude]

Hi,

This may be a dumb question, but here it goes. I was about to pull out of the yard today, when a gentleman asked how to free the fifth wheel he got stuck behind the king pin on the trailer. I told him all he needs to do is dump the suspension and crank the legs down to get the trailer to sit higher. I saw him 5 minutes later and was still having a time with the issue. I looked inside the 2020 kenworth and there is NO DUMP SUSPENSION BUTTON. How do you let the air out of the bags on a 2020 KW??
(The issue was resolved, he just had to keep cranking the landing gear, but damn why no suspension dump?)