Tow/Haul button: what is it for?
Hi all, very noob question. Just purchased my second RV., 2012 24' Class C on E350. The tow/haul button automatically comes on when started. Sales person said to just turn it off. What is it used...
Forum Discussion
pastorbillv wrote:
And, on flats, slight downhills when you're not working the engine with your load, turn off tow/haul and the let engine kick into "overdrive" and drop RPMS for fuel efficiency.
Tow/haul mode does not disable overdrive. It may make it a little slower to shift into overdrive (and probably less apt to shift out when not really needed), but it does not lock it out.
If the button is labeled "O/D Off" (i.e. you have the old 4R100 transmission or a predecessor), that does indeed disable overdrive, as labeled; but tow/haul is a different and rather more clever thingy.
