Connect/Disconnect trailer with air suspension on Hybrid

Hi,

Has anyone done the process that calls on the manual to connect/Disconnect a trailer, in a hybrid with air suspension.
I’m a bit confused on the “turn off the hybrid system” and “restart the hybrid system”
The whole process is a bit long. Has anyone got it dumb down or is there a video for this process?

 

Well, probably says that because the engine may already be off depending on the situation. I interpret that line as press the ignition switch to shut the vehicle off.

 

I’m pretty sure that’s just them “fancifying” turn the truck off and turn the truck on, via the power button. But because it’s not technically an ignition they refer to it as “the hybrid system”