Dodge 2009 Dodge Ram Pickup 2500 - Manual (Page 66)

speeds above approximately 35 to 40 mph (57 to
65 km/h) for 6th to 5th and 22 to 25 mph (36 to 40 km/h)
for 5th to 4th.
When To Use “TOW HAUL” and “O/D OFF”
Modes
When driving in hilly areas, towing a trailer, carrying a
heavy load, etc., and frequent transmission shifting oc-
curs, press the “TOW HAUL O/D OFF” switch once to
select TOW HAUL. This will improve performance and
reduce the potential for transmission overheating or
failure due to excessive shifting. When operating in
“TOW HAUL” mode, 6th gear (if equipped) is disabled
and 2-3 and 3-4 and 4–5 shift patterns are modified. Shifts
into Overdrive (5th gear) are allowed during steady
cruise (for improved fuel economy). Pressing the “TOW
HAUL O/D OFF” switch a second time to select O/D
OFF will disable 5th and 6th gear completely, which
should eliminate any excessive transmission shifting.
The “TOW HAUL” or “O/D OFF” Indicator Light will
illuminate in the instrument cluster to indicate when the
switch has been activated. Pressing the switch a third
time restores normal operation. If the “TOW HAUL” or
“O/D OFF” modes are desired, the switch must be
pressed each time the engine is started.
Tow Haul O/D Off Switch
64 STARTING AND OPERATING