2011 Dodge Ram 1500 Quad Cab Owner Manual - Page 315

314 STARTING AND OPERATING Overdrive Operation The Overdrive automatic transmission contains an electronically controlled fourth gear (OVERDRIVE). The transmission will automatically shift from third gear to OVERDRIVE if the following conditions are present: gear for operation at this temperature. Normal operation will resume when the transmission fluid temperature has risen to a suitable level. If the transmission temperature gets extremely hot, the transmission will automatically select the most desirable gear for operation at this temperature. If the transmission • the shift lever is in DRIVE temperature becomes hot enough, the "Transmission • the engine coolant has reached normal operating temTemperature Warning Light" may illuminate and the perature transmission may downshift out of OVERDRIVE until • vehicle speed is above approximately 30 mph the transmission cools down. After the transmission cools down, the transmission will resume normal operation. (48 km/h) • the TOW/HAUL switch has not been activated The transmission will downshift from OVERDRIVE to DRIVE if the accelerator pedal is fully pressed at vehicle • the transmission has reached normal operating speeds above approximately 35 mph (56 km/h). temperature When To Use TOW/HAUL Mode NOTE: If the vehicle is started in extremely cold temWhen driving in hilly areas, towing a trailer, carrying a peratures, the transmission may not shift into OVERheavy load, etc., and frequent transmission shifting ocDRIVE and will automatically select the most desirable curs, press the TOW/HAUL switch. This will improve