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If the system becomes inoperable, selecting some modes may not be
possible and a message is displayed. If it becomes inoperable due to a
system malfunction, all of the mode indicators on the control turn off
and one of the following messages appears in the information display:
TERRAIN MANAGEMENT SYSTEM FAULT:Cycling the key may
clear the fault. If key cycling does not work, have the system serviced by
an authorized dealer.
MODE CHANGE NOT ACCEPTED, RETRY:A mode change cannot
be made at the time of driver request. Try the mode change again.
HILL DESCENT CONTROL™ (IF EQUIPPED)
WARNING:Hill descent control cannot control descent in all
surface conditions and circumstances, such as ice or extremely
steep grades. Hill descent control is a driver assist system and cannot
substitute for good judgment by the driver. Failure to do so may result
in loss of vehicle control, crash or serious injury.
WARNING:Hill descent control does not provide hill hold at
zero mph (0 km/h). When stopped, the parking brake must be
applied and/or the vehicle must be placed in P (Park) or it may roll
away.
Hill descent control allows the driver to set and maintain vehicle speed
while descending steep grades in various surface conditions.
Hill descent control can maintain vehicle speeds on downhill grades
between 3 mph (5 km/h) and 20 mph (32 km/h). Above 20 mph
(32 km/h), the system remains armed, but descent speed cannot be set
or maintained.
Hill descent control requires a cooling down interval after a period of
sustained use. The amount of time that the feature can remain active
before cooling varies with conditions. The system will provide a warning
in the message center and a chime will sound when the system is about
to disengage for cooling. At this time, manually apply the brakes as
needed to maintain descent speed.
226Terrain Response
2015 Explorer(exp)
Owners Guide gf, 2nd Printing, September 2014
USA(fus)
Page 228 of 596

To enable hill descent control and set the descent speed, do the
following:
1. Press and release the hill descent button located in the
center of the terrain management control. A light in the
control will illuminate and chime will sound when this feature
is activated.
2. To increase descent speed, press the accelerator pedal until the
desired speed is reached. To decrease descent speed, press the brake
pedal until the desired speed is reached.
Whether accelerating or decelerating, once the desired descent speed is
reached, remove your feet from the pedals and the chosen vehicle speed
will be maintained.
Note:Noise from the ABS pump motor may be observed during hill
descent control operation. This is a normal characteristic of the ABS and
should be no reason for concern.
Hill descent modes
•At speeds below 20 mph (32 km/h): When the HDC button is pressed
and HDC is active, HILL DESCENT CONTROL ACTIVE will appear in
the message center for several seconds.
•At speeds below 20 mph (32 km/h): When the HDC button is pressed
and conditions are not correct for hill descent activation, the HDC
system will be enabled, the light on the button will be on solid and
HILL DESCENT CONTROL READY will be displayed in the message
center for several seconds.
•At speeds above 20 mph (32 km/h): When the HDC button is pressed,
the HDC system will be enabled, the light on the button will be
illuminated, and FOR HILL CNTRL, 20 MPH OR LESS will be
displayed in the message center for several seconds.
•For HDC to enable, the vehicle must be in a drive gear or (R)
Reverse. If the vehicle is in P (Park) or N (Neutral) and the HDC
button is pressed, FOR HILL CNTRL, SELECT GEAR will be displayed
in the message center for several seconds.
Refer toWarning lamps and indicatorsin theInstrument Cluster
chapter for hill descent control messages.
Terrain Response227
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Owners Guide gf, 2nd Printing, September 2014
USA(fus)
Page 309 of 596

Fuse or relay
numberFuse amp
ratingProtected components
22 20A Horn relay
23 15A Steering wheel control module,
Intelligent access, Headlamp
switch
24 15A Datalink connector, Steering
wheel control module
25 15A Liftgate release
26 5A Radio frequency module
27 20A Intelligent access module
28 15A Ignition switch, Push-button start
switch
29 20A Radio, Global positioning system
module
30 15A Front park lamps
31 5A Trailer tow brake controller
32 15A 110-volt AC power point, Power
folding mirror, Power mirrors,
One-touch up and down front
windows, Door lock illumination,
Memory switch illumination
33 10A Occupant classification sensor
34 10A Blind spot monitor, Rearview
camera, Reverse sensing system,
Lane departure warning module,
Second row heated seats module
35 5A Heads-up display, Climate control
humidity sensor, Terrain
management system, Hill descent
switch, Headlamp switch ignition
sensor
36 10A Heated steering wheel
37 10A Restraints control module
308Fuses
2015 Explorer(exp)
Owners Guide gf, 2nd Printing, September 2014
USA(fus)