I understand what might prompt you to ask the question. However, if you think about it a bit, it is logical to leave the vehicle DSC activated as normal.
It is designed to enhance the vehicle's dynamic stability and, even with stability aids on the van, the vehicle's dynamic stability is critical to safe travelling.
You don't mention which of the dual cab utes you have [edit:I just noticed the heading of the thread - sorry] ... but I would certainly advise that I would just hook the van on, set up the towing aids for the van, and leave the DSC on the (Ranger) ute turned on.
Cheers - and happy towing - John
-- Edited by rockylizard on Tuesday 20th of October 2015 09:49:01 AM
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2006 Discovery 3 TDV6 SE Auto - 2008 23ft Golden Eagle Hunter Some people feel the rain - the others just get wet - Bob Dylan