2015 Ford F450 Super Duty Crew Cab Diesel Supplement Printing 1 - Page 25

Fuel and Refueling WARNINGS Tampering or disabling your vehicle's exhaust aftertreatment system will result in severe vehicle performance limitation including eventual speed limiting to 5 mph. Your vehicle's information display will display a series of messages regarding the amount of DEF available. A systems check will display messages indicating the amount of DEF available (OK or under 1⁄2 full) or will produce a warning message that displays the mileage (kilometers) remaining as the fluid in the DEF tank nears empty. For more information on warning messages, see the Information Displays chapter of your Owner's Manual. As the DEF level nears empty, the DEF warning symbol will be E163176 displayed and a series of tones will sound with the messages starting at 500 miles (805 km) remaining before DEF is depleted. The warning symbol and messages will continue until you refill the DEF tank. Continued driving without refilling will result in the following actions as required by the California Air Resources Board (CARB) and the U.S. Environmental Protection Agency (EPA): • Within a certain number of miles (kilometers) to empty, speed will be limited upon vehicle restart. Prior to this occurring a message will appear in the information display. Further vehicle operation without refilling your DEF tank will cause the engine to enter an idle-only condition. This will only occur upon vehicle refueling or at an extended idle. A message will indicate the required actions to resume normal operation. It is required to add a minimum of 0.5 gallons (1.9L) of DEF to the tank to exit the idle-only condition, but your vehicle will still be in the speed-limiting mode until you refill the tank completely. • For either vehicle speed limiting or idle-only condition, normal vehicle operation will resume when you refill the DEF tank. Note: When filling the DEF tank from empty, there may be a short delay before detecting the increased level of fluid. The increased level detection must occur before your vehicle returns to full power. Low DEF Warnings and Actions - Instrument Cluster Messages (Optional information display messages shown, base information display messages similar) Cluster Message Exhaust Fluid Level OK Exhaust Fluid Under 1⁄2 Full Distance/Exhaust Fluid Level or Action Full exhaust fluid tank Exhaust fluid tank below 1⁄2 full Customer Requested Actions Drive normally Drive normally Vehicle Actions None None 22 Super Duty (TFA) , enUSA