2012 Ford F250 Super Duty Diesel Supplement 3rd Printing - Page 27
2012 Ford F250 Super Duty Manual
Page 27 highlights
Maintenance and Specifications DEF warning messages and vehicle operations WARNING: Diesel Exhaust Fluid (DEF) must be refilled when low or replaced when contaminated or the vehicle speed will be speed limited to 50 mph (80 km/h). In these conditions, drive with caution and refill DEF immediately. If the DEF becomes empty or contaminated fluid is not replaced, the vehicle will become limited to idle speed only once stopped. In these conditions, be cautious where you stop the vehicle because you may not be able to drive long distances and will not be able to maintain highway speeds until DEF is refilled or replaced. WARNING: 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 message center 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 Message center section in the Instrument Cluster chapter of your Owner's Guide. As the DEF level nears empty, the DEF warning symbol will be displayed and chimes will sound with the messages starting at 500 miles (805 km) remaining before DEF is depleted. The warning symbol and messages will continue until the DEF tank is refilled. Continued driving without refilling will result in the following actions as required by the California Air Resources Board (CARB) and /or 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 message center. 27 2012 Diesel (67l) Supplement, 3rd Printing USA (fus)