2009 Dodge Ram 1500 Pickup Owner Manual - Page 328

326 STARTING AND OPERATING NOTE: • The torque converter clutch will not engage until the transmission fluid and engine coolant (antifreeze) are warm [usually after 1 to 3 miles (1.6 to 4.8 km) of driving]. Because the engine speed is higher when the torque converter clutch is not engaged, it may seem as if the transmission is not shifting into Overdrive when cold. This is normal. Pressing the TOW/HAUL switch when the transmission is sufficiently warm will demonstrate that the transmission is able to shift into and out of Overdrive. • If the vehicle has not been driven in several days, the first few seconds of operation after shifting the transmission into gear may seem sluggish. This is due to the fluid partially draining from the torque converter into the transmission. This condition is normal and will not cause damage to the transmission. The torque converter will refill within five seconds of shifting from PARK into any other gear position. FOUR-WHEEL DRIVE OPERATION - IF EQUIPPED Four-wheel drive trucks are equipped with a electronically shifted transfer case. Refer to the operating instructions for your transfer case, located in this section.