2005 Dodge Ram 2500 Pickup Owner Manual - Page 172

172 UNDERSTANDING YOUR INSTRUMENT PANEL 23. SERV 4WD Indicator The 4WD indicator will be illuminated whenever the 4WD mode is engaged for either the manual or electric shift 4WD systems. The SERV 4WD indicator monitors the electric shift 4WD system. If the SERV 4WD light stays on or comes on during driving, it means that the 4WD system is not functioning properly and that service is required. 24. Low Wash Light This light comes on when the washer fluid level falls below approximately 1/4 filled. The light will remain on until fluid is added and one minute has elapsed. 25. Odometer/Trip Odometer Button Press this button to toggle between the odometer and the trip odometer display. Holding the button in resets the trip odometer reading when in trip mode. 26. Fuel Gauge Shows level of fuel in tank when ignition switch is in the ON position. 27. Low Fuel Warning Light Glows when the pointer is between "E" and 1/8 indication mark (approximately 15% of tank volume) on the fuel gauge. When the fuel gauge pointer is on "E" (equivalent to Distance To Empty [DTE] = 0 on the overhead console if so equipped) there is reserve fuel capacity, which corresponds to approximately 8% of tank volume. This reserve capacity was put in place to prevent the likelihood of customers running out of fuel when operating at maximum load conditions in areas where there aren't many gas stations. (See page 282 for more information.)