2009 Dodge Ram 2500 Pickup Owner Manual - Page 339

STARTING AND OPERATING 337 The system will only work if the intended direction of the vehicle and vehicle gear match. For example, if the intended direction is forward up a hill and the vehicle is in DRIVE, and the activation criteria are met, HSA will activate. HSA on Automatic Transmission Vehicles The system will work in REVERSE and all forward gears on vehicles equipped with an automatic transmission. The system will not activate if the vehicle is placed in NEUTRAL. Towing and Hauling with HSA (Vehicles Equipped with Automatic Transmissions Only) The HSA system does not know if your vehicle is loaded or towing a trailer, unless the TOW/HAUL button, located on the shift lever, is selected. When activated, the TOW/HAUL light will illuminate in the instrument cluster. For more information on the TOW/HAUL mode, refer to "When To Use TOW/HAUL and O/D OFF Modes" under ЉAutomatic Transmission" in Section 5. In order to accommodate the extra weight entailed under towing and hauling conditions and to increase driver comfort while launching on a hill, the system recognizes when the TOW/HAUL button is activated and compensates by releasing brake pressure at a slower rate while throttle is applied in order to prevent the vehicle from rolling down the hill. 5