Incorrect DEF Quality Warning Indications and Vehicle
Consequences for Emergency Vehicles
Condition
Indicator
Lamps
Consequence
Remedy
Correct DEF quality.
None.
None.
None.
Initial warning when
incorrect DEF
quality is detected.
Amber engine
solid
None.
Replace DEF
with
Ford-approved
DEF.
Initial warning
10 hours after
incorrect DEF
quality is detected.
Amber engine
solid
Vehicle speed
limited to
55 mph
(88 km/h).
*
Final vehicle
consequence
20 hours after
incorrect DEF
quality is detected
and engine
intentionally shut
down (key off), in
extended idle for
one hour or fuel
tank refilled.
*
Amber engine
solid
/
Red engine
solid
Vehicle speed
limited to
25 mph
(40 km/h).
*
The vehicle speed restriction is suspended during pump operation when
using any of the following engine control modes:
•
Power take-off
•
Remote power take-off
•
Remote throttle
•
SAE J1939–commanded pressure governor.
124
Fuel and Refueling
2013 F-650/750
(f67)
Owners Guide gf, 2nd Printing, March 2013
USA
(fus)