Quote:
Originally Posted by DLM1965
So, do you engage the button when preparing to climb, and disengage when back on level?
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No, engage it when you are towing and/or hauling a load; which for an E450 RV is: All the time.
On my ACE the only time I don't use Tow/Haul mode is accelerating to highway speeds on the on-ramp. YMMV