2012 Ford F250 Super Duty Owner Guide 4th Printing - Page 18

Instrument Cluster Door ajar (RTT): Displays when the ignition is in the on position and any door is not completely closed. Engine coolant temperature (RTT): Illuminates when the engine coolant temperature is high. Stop the vehicle as soon as possible, switch off the engine and let cool. Refer to Engine coolant in the Maintenance and Specifications chapter. WARNING: Never remove the coolant reservoir cap while the engine is running or hot. Low tire pressure warning (if equipped): Illuminates when your tire pressure is low. If the light remains on at start up or while driving, the tire pressure should be checked. Refer to Inflating your tires in the Tires, Wheels and Loading chapter. When the ignition is first turned to on, the light will illuminate for three seconds to ensure the bulb is working. If the light does not turn on, have the system inspected by your authorized dealer. For more information on this system, refer to Tire pressure monitoring system (TPMS) in the Tires, Wheels and Loading chapter. Hill descent (if equipped): Displays when using the hill descent mode. Refer to the Driving chapter for transmission function and operation. Transmission Tow/Haul Feature (if equipped): Displays when the Tow/Haul feature has been activated. Refer to the Driving chapter for transmission function and operation. If the light flashes steadily, have the system serviced immediately, damage to the transmission could occur. 18 2012 F-250/350/450/550 (f23) Owners Guide, 4th Printing USA (fus)