Ford 2013 F-650 Owner's Manual page 122

Continued driving without refilling results in the following actions as
required by the U.S. Environmental Protection Agency (EPA):
Low DEF Level Warning Indications and Vehicle Consequences
DEF Tank Level
Above initial
warning threshold
(Over 20% full).
Initial warning
threshold (20% full).
Critical warning
threshold (15% full).
First vehicle
consequence (12.5%
full).
Second vehicle
consequence
(Empty). System
cannot maintain
DEF pressure.
Final vehicle
consequence
(Empty) and engine
intentionally shut
down (key off), in
extended idle for
one hour or fuel
tank refilled.
2013 F-650/750 (f67)
Owners Guide gf, 2nd Printing, March 2013
USA (fus)
Fuel and Refueling
Indicator
Consequence
Lamps
None. None.
None.
DEF solid
DEF
None.
blinking
DEF
blinking / 25% torque
Amber engine reduction.
solid
Torque
reduction
DEF
increases
blinking /
from 25% to
Amber engine
40% at rate of
solid
1% each
minute.
• 40% torque
reduction
DEF
• 5 mph
blinking /
(8 km/h)
Amber engine
vehicle speed
solid /
limit
Red engine
• 1000 RPM
solid
engine speed
limit.
121
Remedy
None.
Add 1 gallon
(3.8L) DEF to
5 gallon (19.0L)
tank or 2 gallons
(7.6L) DEF to
10 gallon
(34.0L) tank.
Add 1 gallon
(3.8L) DEF to
5 gallon (19.0L)
tank or 2 gallons
(7.6L) DEF to
10 gallon
(34.0L) tank.
Allow the
system to prime.