Contaminated Def Or Inoperative Scr System; Def Guidelines And Information - Ford Diesel 2012 Supplement Manual

Maintenance and Specifications
To prevent overfilling of the DEF tank when filling with a bottle, Ford
recommends using Motorcraft DEF. Additionally, if the message center
indicates EXHAUST FLUID UNDER 1/2 FULL, you should only add a
MAXIMUM of 2 gallons (6.7L) of DEF to the tank to prevent freeze
damage due to overfilling. If the message center indicates EXHAUST
FLUID LEVEL OK, do not add DEF.

Contaminated DEF or inoperative SCR system

SCR systems are sensitive to
contamination of the DEF. USE
ONLY API or ISO 22241 CERTIFIED
DIESEL EXHAUST FLUID. If the
SCR becomes contaminated or
inoperative, the DEF light will
illuminate and exhaust fluid system
fault messages will appear in the
message center.
Continued driving without replacing DEF or having the SCR system
repaired 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 restart. Prior to this occurring a message will appear in
the message center.
• Further vehicle operation without replacing contaminated DEF will
cause the engine to enter an idle-only condition. This will only occur
upon vehicle refueling, vehicle idling in park for 1 hour, or engine
shutdown for 10 minutes or more and will be indicated by a message
in the message center indicating required actions to resume normal
operation.
For either vehicle speed limiting or idle-only condition, normal vehicle
operation will resume when the contaminated system is repaired. To
service a contaminated or inoperative system, see your
authorized dealer.

DEF guidelines and information

• Use only DEF that carries the trademark: American Petroleum
Institute (API) certified DEF or ISO 22241.
• Do not put DEF in the diesel fuel tank.
• Do not overfill the DEF tank.
• Do not re-use the DEF container or nozzle once it is emptied.
34
2012 Diesel (67l)
Supplement (supplement), 1st Printing
Arabic_(LHD) (gc_lhd)