2012 Ford F550 Cab Diesel Supplement 3rd Printing - Page 28
2012 Ford F550 Cab Manual
Page 28 highlights
Maintenance and Specifications • 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 extended idle and will be indicated by a message in the message center indicating 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 the vehicle will still be in the speed limiting mode until the tank is refilled completely. For either vehicle speed limiting or idle-only condition, normal vehicle operation will resume when the DEF tank is refilled. Note: When filling the DEF tank from empty, there may be a short delay before detecting the increased level of DEF. This must occur before full power is returned. 28 2012 Diesel (67l) Supplement, 3rd Printing USA (fus)