2009 Dodge Ram 1500 Pickup Owner Manual - Page 250

248 UNDERSTANDING YOUR INSTRUMENT PANEL • SERV 4WD The SERV 4WD light monitors the electric shift • Engine Temperature Warning Light 4WD system. If the SERV 4WD light stays on or This light warns of an overheated engine condicomes on during driving, it means that the tion. As temperatures rise and the gauge ap4WD system is not functioning properly and proaches H, this indicator will illuminate and a that service is required. single chime will sound after reaching a set threshold. • Electronic Stability Program (ESP) Indicator Light / Further overheating will cause the temperature gauge to Brake Assist System (BAS) Warning Light pass H, the indicator will continuously flash and a The malfunction light for the Electronic Stabilcontinuous chime will occur until the engine is allowed ity Program (ESP) is combined with Brake to cool. Assist System (BAS). The yellow ESP/BAS Warning Light comes on when the ignition If the light turns on while driving, safely pull over and stop the vehicle. If the A/C system is on, turn it off. Also, switch is turned to the ON position. They should go out If the light remains lit with the engine running your vehicle, will usually be drivable, however, see an authorized dealer for service as soon as possible. If the light is flashing when the engine is running, immediate service is required and you may experience reduced performance, an elevated/rough idle or engine stall and your vehicle may require towing. shift the transmission into NEUTRAL and idle the vehicle. If the temperature reading does not return to normal, turn the engine off immediately and call for service. Refer to "If Your Engine Overheats" in Section 6 for more information.