2010 Dodge Ram 1500 Regular Cab Owner Manual - Page 310

308 STARTING AND OPERATING 1 (First) • the transmission has reached normal operating This range is for hard pulling at low speeds in mud, sand, temperature snow, or on steep grades. Begins and stays in low gear NOTE: If the vehicle is started in extremely cold temwith no upshift. Provides engine compression braking at peratures, the transmission may not shift into OVERlow speeds. DRIVE and will automatically select the most desirable Overdrive Operation gear for operation at this temperature. Normal operation The Overdrive automatic transmission contains an elec- will resume when the transmission fluid temperature has tronically controlled fourth gear (OVERDRIVE). The risen to a suitable level. transmission will automatically shift from third gear to If the transmission temperature gets extremely hot, the OVERDRIVE if the following conditions are present: transmission will automatically select the most desirable • the shift lever is in DRIVE gear for operation at this temperature. If the transmission 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 (48 km/h) down, the transmission will resume normal operation. • the TOW/HAUL switch has not been activated