Dodge 2009 Ram Truck Owner's Manual page 355

HSA Activation Criteria
The following criteria must be met in order for HSA to
activate:
• Vehicle must be stopped
• Vehicle must be on a 7% or greater incline
• Gear selection matches vehicle uphill direction (i.e.,
vehicle facing uphill is in forward gear; vehicle back-
ing uphill is in REVERSE gear).
WARNING!
There may be situations on minor hills (i.e., less than
7%), with a loaded vehicle or while pulling a trailer
where the system will not activate and slight rolling
may occur, which could cause a collision with an-
other vehicle or object. Always remember the driver
is responsible for braking the vehicle.
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.
The system will work in REVERSE and all forward gears,
and will not activate if the vehicle is placed in
NEUTRAL.
Towing and Hauling with HSA
The HSA system does not know if your vehicle is loaded or
towing a trailer unless the TOW/HAUL switch, located on
the center stack, is selected. When activated, the "TOW/
HAUL Indicator Light" will illuminate in the instrument
cluster. For more information on the TOW/HAUL mode,
refer to "When To Use TOW/HAUL" under Automatic
Transmission" in this section. In order to accommodate the
extra weight entailed under towing and hauling conditions
and to increase driver comfort while launching on a hill,
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