2008 Dodge Ram 2500 Pickup Owner Manual Diesel - Page 346

344 STARTING AND OPERATING WARNING! It is the driver's responsibility to change to the max load inflation pressure (cold) low pressure warning threshold condition when not driving in the light load condition as defined as two occupants ( 150 lbs each) plus 200 pounds of cargo. The vehicle "Light Load Definition" is found in the Supplemental Tire Pressure Information label located on the rear face of the driver door. Failure to do so may cause you to lose control resulting in an accident, causing serious or fatal injury. To switch back to the max load inflation pressure (cold) low pressure warning threshold, press the "Light Load" reset switch. It is not necessary to first fill the tires to the max load inflation pressure (cold) values to switch the TPMS system to the max load inflation pressure (cold) low pressure warning threshold. If after pressing the "Light Load" reset switch and tire pressures are below the max load inflation pressure (cold) low pressure warning thresholds, the TPMS low pressure warning telltale lamp located in the Instrument Cluster will turn ON and a chime will sound. The tire pressures are now required to be inflated to the max load inflation pressure (cold) values described on the Tire and Loading Information label. The Tire and Loading Information label is located on the drivers side B-pillar. If the "Light Load" reset switch LED turns OFF the TPMS has been reset and the TPMS is using the max load inflation pressure (cold) low pressure warning thresholds. Tire Pressure Monitor System Components The Tire Pressure Monitor System (TPMS) uses wireless technology with wheel rim mounted electronic sensors to monitor tire pressure levels. Sensors, mounted to each wheel as part of the valve stem, transmit tire pressure readings to the Receiver Module.