Electronic locking differential 2012
There are other threads about this but they refer to certain models etc.
I thought I would post a new one with the wording straight from the 2012 owners guide. I tlooks like Ford monitors this site and has made changes to keep up with the most popular mods from owners of earlier models.
Electronic locking differential (ELD)
The electronic locking differential (ELD) is a device housed in the rear
axle which allows both rear wheels to turn at the same speed. The ELD
can provide additional traction should the vehicle become stuck. The
ELD is electronically activated by the driver and can be shifted on the fly
within the ELD operating speed range. It is intended for use in mud,
rocks, sand, or any off-road condition where maximum traction is
needed. It is not intended for use on dry pavement.
The ELD is affected by the following conditions:
• The ELD will not engage if the vehicle speed is above 20 mph
(30 km/h) in 4x2, 4x4 Auto, or 4x4 High modes.
• The ELD will not engage if the vehicle speed is above or 56 mph
(90 km/h) in 4X4 Low.
• The ELD will not engage if the accelerator pedal is pressed beyond
50% during an engagement attempt
• In 4x2, 4x4 Auto, and 4x4 High modes, the ELD will automatically
disengage at speeds above 25 mph (40 km/h) and will automatically
reengage at speeds below 18 mph (30 km/h).
• In 4L (4X4 low), the ELD will automatically disengage at speeds above
62 mph (100 km/h) and will automatically reengage at speeds below
56 mph (90 km/h).
• The AdvanceTrac system has the ability to take over control of the
ELD and disable it during driving maneuvers when necessary.
Activating the electronic locking differential (ELD)
The ELD can be turned on by
pulling the 4WD control ****
toward you (4x4 vehicles) or by
turning the ELD control **** from
OFF to ON (4x2 vehicles).