Rear Axle; Limited Slip Differential - Ford EXPEDITION 2017 Owner's Manual

Rear Axle

LIMITED SLIP DIFFERENTIAL

(If Equipped)
This axle provides added traction on
slippery surfaces, particularly when one
wheel is on a poor traction surface. Under
normal conditions, the limited-slip axle
functions like a standard rear axle. The axle
may exhibit a slight noise or vibration
during tight turns with low vehicle speed.
This is normal behavior and indicates the
axle is working.
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Expedition (TB7) Canada/United States of America, enUSA, Edition date: 201604, Third Printing