Ford 2013 F-650 - Low DEF Level Warning Indications and Vehicle Consequences

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
Indicator
Lamps
Consequence Remedy
Above initial
warning threshold
(Over 20% full).
None. None. None.
Initial warning
threshold (20% full).
DEF solid
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.
Critical warning
threshold (15% full).
DEF
blinking
None.
First vehicle
consequence (12.5%
full).
DEF
blinking
/
Amber engine
solid
25% torque
reduction.
Second vehicle
consequence
(Empty). System
cannot maintain
DEF pressure.
DEF
blinking
/
Amber engine
solid
Torque
reduction
increases
from 25% to
40% at rate of
1% each
minute.
Final vehicle
consequence
(Empty) and engine
intentionally shut
down (key off), in
extended idle for
one hour or fuel
tank refilled.
DEF
blinking
/
Amber engine
solid
/
Red engine
solid
• 40% torque
reduction
• 5 mph
(8 km/h)
vehicle speed
limit
• 1000 RPM
engine speed
limit.
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.
Fuel and Refueling 121
2013 F-650/750 (f67)
Owners Guide gf, 2nd Printing, March 2013
USA (fus)