2010 Ford F350 Super Duty Super Cab Owner Guide 2nd Printing - Page 18

Instrument Cluster Engine coolant temperature (RTT): Displays when the engine coolant temperature is high. Stop the vehicle as soon as safely possible, switch off the engine and let it 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 fuel (RTT): Displays when the fuel level in the fuel tank is at or near empty (refer to Fuel gauge in this chapter). Door ajar (RTT): Displays when the ignition is in the on position and any door is open. Transmission Tow/Haul Feature (automatic transmission) (if equipped): The Tow Haul light remains illuminated as long as the Tow/Haul feature is activated. Refer to the Driving chapter for transmission function and operation. If the light remains illuminated and will not cancel using the Tow/Haul switch located on the end of the gear shift lever, have the system serviced immediately or damage to the transmission could occur. Four-wheel drive low (if 4x4 equipped): Illuminates when LOW four-wheel drive low is engaged. Four-wheel drive high (if equipped): Illuminates when four-wheel drive high is engaged. 4x4 HIGH 18 2010 F-250/350/450/550 (f23) Owners Guide, 2nd Printing USA (fus)