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Rear axle – FORD 2014 F-550 v.3 User Manual

Page 162

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For 2WD vehicles and vehicles
equipped with a manual shift 4WD
system

E163191

Turn the control to ON.

E163170

Once the indicator light
illuminates 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 is
accompanied by CHECK LOCKING
DIFFERENTIAL in the information
display. See your authorized Ford
dealer for assistance.

159

Super Duty (TFA)

Rear Axle

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