Ram Trucks 2012 3500 - Owner Manual - Manual (Page 389)

Overdrive Operation
The automatic transmission includes an electronically
controlled Overdrive (fourth gear). The transmission will
automatically shift into the Overdrive gear if the follow-
ing conditions are present:
• the shift lever is in the DRIVE position,
• the transmission fluid has reached an adequate tem-
perature,
• the engine coolant (antifreeze) has reached an ad-
equate temperature,
• vehicle speed is sufficiently high, and
• the TOW/HAUL switch has not been activated;
When to Use TOW/HAUL Mode
When driving in hilly areas, towing a trailer, carrying a
heavy load, etc., and frequent transmission shifting oc-
curs, press the TOW/HAUL switch to select TOW/
HAUL mode. This will improve performance and reduce
the potential for transmission overheating or failure due
to excessive shifting. When operating in TOW/HAUL
mode, the transmission will downshift into third gear.
NOTE: TOW/HAUL mode locks out Overdrive.
TOW/HAUL Switch
5
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