Freightliner DD15 - beeping

Hey, I have a 2017 freightliner argosy, in Australia, with a DD15 and smart shift Auto.

Lately there has been a beeping sound coming on and off, whilst u are driving along you will get a mix of a constant beep, and what sounds like a beeping code, the beeping even sometimes just happens during the night whilst everything is off and I am sleeping.

I think it is the step, but nothing really makes sense. So a couple of questions.

Does anyone know if the steps are on their own circuit? Does it have a fuse that can be pulled?

I have read online that you can sometimes add extra earth's to the steps connections, anyone know how exactly to do this?

I have read online that Freightlines use the same buzzer for all of the warning beeps, and this is behind the dash somewhere? Any idea how hard it is to actually just disconnect the physical buzzer?

This thing is driving me insane. Thanks