2012 FORD SUPER DUTY differential

•On 2WD vehicles and 4WD vehicles in 2H (4X2) or 4H (4X4 High),
the ELD will automatically disengage at speeds above 25 mph
(40 km/h) and will automatically reengage at speeds below 19 mph
(30 km/h).
•On 4WD vehicles in 4L (4X4 Low), the ELD can be engaged at any
speed and will not automatically disengage.
Activating the electronic locking differential (ELD)
For vehicles equipped with an
electronic shift 4WD system:
Pull the knob on the 4WD control
toward you. The
indicator light
will display in the instrument
cluster.
For 2WD vehicles and vehicles
equipped with a manual shift
4WD system:
Turn the control to ON. The
indicator light will display in the
instrument cluster.
Once the
light is displayed in the instrument cluster, both rear wheel
axle shafts will be locked together providing added traction.
If the
indicator light in the instrument cluster turns off, 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 the
CHECK LOCKING DIFFERENTIAL message in the message center.
See your authorized Ford dealer for assistance.
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.
Driving
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2012 F-250/350/450/550(f23)
Owners Guide, 1st Printing
USA(fus)

•Front driver side (4x4)
Note:Make sure the jack fits onto
the flat area on the outboard side of
the differential.
•Front passenger side (4x4)
Note:View shown from the rear of
the vehicle to clearly identify the
jack point. Place the jack directly
under the axle.
•Rear
Roadside Emergencies
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2012 F-250/350/450/550(f23)
Owners Guide, 1st Printing
USA(fus)

Never use the front or rear
differential as a jacking point.
WARNING:To lessen the
risk of personal injury, do
not put any part of your body
under the vehicle while changing a
tire. Do not start the engine when
your vehicle is on the jack. The
jack is only meant for changing
the tire.
7. Turn the jack handle clockwise
until the wheel is completely off the
ground and high enough to install
the spare tire.
8. Remove the lug nuts with the lug
wrench.
9. Replace the flat tire with the
spare tire, making sure the valve
stem is facing outward for all front wheels and single rear wheel vehicles.
If replacing an inboard rear tire on dual rear wheel vehicles, the valve
stem must be facing outward. If replacing the outboard wheel, the valve
stem must be facing inward. Reinstall the lug nuts until the wheel is
snug against the hub. Do not fully tighten the lug nuts until the wheel
has been lowered.
10. Lower the wheel by turning the jack handle counterclockwise.
Go to Step 19.
The following steps apply to F–350 Dual Rear Wheel (DRW) and
F–450/F–550 vehicles only:
11. Slide the notched end of the
jack handle over the release valve
and use the handle to slide the jack
under the vehicle. Make sure the
valve is closed by turning it
clockwise.
Roadside Emergencies
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2012 F-250/350/450/550(f23)
Owners Guide, 1st Printing
USA(fus)

12. Position the jack according to the following guides:
•Front (4x2): F–350 DRW
Note:Place jack directly under
I-beam.
•Front driver side (4x4): F–350
DRW
Note:Make sure the jack fits onto
the flat area on the outboard side of
the differential housing.
•Front passenger side (4x4): F-350
DRW
Note:View shown from the rear of
the vehicle to clearly identify the
jack point.
Note:Place the jack directly under
axle and inboard of the radius arm
so that the jack clears the radius
arm.
Roadside Emergencies
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2012 F-250/350/450/550(f23)
Owners Guide, 1st Printing
USA(fus)