Dodge 2009 Ram 3500 - Manual (Page 344)

AUTO, the ESP system will be in this mode. This mode
should be used for almost all driving situations. ESP
should only be turned to “Partial Off” or “ESP Off” for
specific reasons as noted below. ESP Partial Off
This mode is entered by momentarily depressing the ESP
OFF switch. When in
ЉPartial OffЉ mode, the TCS portion
of ESP, except for the “limited slip” feature described in
the TCS section, has been disabled and the
ЉESP/TCS
Indicator Light Љ will be illuminated. All other stability
features of ESP function normally. This mode is intended
to be used if the vehicle is in deep snow, sand, or gravel
conditions and more wheel spin than ESP would nor-
mally allow is required to gain traction. To turn ESP on
again, momentarily depress the ESP OFF switch. This
will restore the normal “ESP On” mode of operation.
NOTE: To improve the vehicle’s traction when driving
with snow chains, or starting off in deep snow, sand or
gravel, it may be desirable to switch to the “Partial Off”
mode by pressing the ESP OFF switch. Once the situation
requiring ESP to be switched to the “Partial Off” mode is
ESP OFF Switch
342 STARTING AND OPERATING