Four-wheel drive (if equipped) 215 – FORD 2013 F-550 v.3 User Manual
Page 216
Activating the Electronic Locking Differential (ELD)
Note: The ELD may have difficulty disengaging either by operator
command or automatically if the driveline is under torque. If driving
conditions allow, releasing the accelerator pedal or turning the steering
wheel in the opposite direction may assist in disengagement.
Note: The ELD is designed for off-road use only and is not intended for
use on dry pavement.
For vehicles equipped with an
electronic shift 4WD system:
Pull the 4WD control knob toward
you.
For 2WD vehicles and vehicles
equipped with a manual shift
4WD system:
Turn the control to ON.
Once the indicator light is displayed in the information display,
both rear wheel axle shafts will be locked together providing
added traction.
If the indicator does not come on, or the indicator turns off while
driving, one of the following has occurred:
• The vehicle speed is too high.
• The left and right rear wheel speed difference is too high during an
engagement attempt.
• The system has malfunctioned and will be accompanied by a message
in the information display. See your authorized Ford dealer for
assistance.
2H
4H
4L
Four-Wheel Drive (If Equipped)
215
2013 F-250/350/450/550 (f23)
Owners Guide gf, 3rd Printing, December 2012
USA (fus)