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Electronic Limited-Slip Differential
WHAT IS THE ELECTRONIC
LIMITED-SLIP DIFFERENTIAL
The electronic limited-slip differential
system directs torque, enabling the vehicle
to drive over terrain and road conditions
that a conventional axle cannot. The
system is active at all times and requires
no input from the driver.
Note: If your vehicle is not at optimal
operating conditions or a system fault is
present, a warning may display in the
instrument cluster. Depending on the
warning, you may need to service your
vehicle.
Operating the Electronic Limited-Slip
Differential with a Spare or
Mismatched Tires
If your vehicle has an electronic limited-slip
differential, do not use a spare tire of a
different size than the tire provided. If you
have a spare tire installed, a message may
appear indicating the system has disabled
automatically or reduced function to
prevent system overheat and damage. We
recommend you reinstall the repaired or
replaced spare tire as soon as possible.
When you replace the spare tire, the
system resumes normal operation on the
next key cycle.
Trailer Towing
The electronic limited-slip differential
enhances vehicle stability during trailer tow
operation. During high demand trailering
events, such as steep slopes, high speeds
or with a spare tire, the system may provide
a warning in the instrument cluster and
2022 Expedition (TB8) Canada/United States of America, enUSA, Edition date: 202109, First-Printing
reduce function or enter a temporarily
disabled state. To resume normal function,
stop the vehicle in a safe location and
allow the unit to adequately cool. Once
the system reaches normal operating
temperatures, system function restores
and the electronic limited-slip differential
restored message displays.
ELECTRONIC LIMITED-SLIP
DIFFERENTIAL INDICATORS
The locker mode may
automatically disengage based
on certain conditions such as
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vehicle speed. When engaged, a telltale in
the instrument cluster illuminates amber.
When you exceed the speed the telltale
turns gray, the locker disengages and stays
in standby mode until you meet the speed
conditions. If the system faults and the
locker cannot engage, a warning message
displays in the instrument cluster.
LOCKING AND UNLOCKING
THE ELECTRONIC LIMITED-
SLIP DIFFERENTIAL
To manually activate or
deactivate the locking feature of
the system, press the electronic
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locking differential button.
With the locker engaged, the system
electronically locks the differential causing
both half shafts to turn at the same rate.
This increases traction during off road
events.
217
(If Equipped)
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Table of Contents
Troubleshooting
