
Note:Momentarily releasing the accelerator pedal while performing a
shift will improve engagement/disengagement times.
Note:Do not perform this operation if the rear wheels are slipping.
Note:Some noise may be heard as the system shifts or engages; this is
normal.
Note:4X4 high mode is not intended for use on dry pavement.
Shifting to/from 4L (4X4 low)
1. Bring the vehicle to a speed of 3 mph (5 km/h) or less.
2. Place the transmission in N (Neutral).
3. Move the 4WD control to the desired position.
The message center will display4X4 SHIFT IN PROGRESSduring the
shift. The message center will then display the system mode selected. If
any of the above shift conditions are not met, the shift will not occur and
the message center will display information guiding the driver through
the proper shifting procedures.
IfSHIFT DELAYED PULL FORWARDis displayed in the message
center, transfer case gear tooth blockage is present. To alleviate this
condition, place the transmission in a forward gear, move the vehicle
forward approximately 5 feet (1.5 m), and shift the transmission back to
neutral to allow the transfer case to complete the range shift.
Note:Some noise may be heard as the system shifts or engages; this is
normal.
Note:4x4 low mode is not intended for use on dry pavement.
Using the ControlTrac 4WD system (if equipped)
This system includes an
electronically controlled transfer
case with a high capacity clutch.
The system is interactive with the
road, continually monitoring and
adjusting torque delivery to the
front and rear wheels to optimize
traction.
•2H (4X2)- delivers power to the
rear wheels only. This mode is
appropriate for normal on-road
driving on dry pavement and provides best fuel economy and
smoothness.
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•4A (Two-speed automatic 4WD)- provides electronic control
four-wheel drive with power delivered to the front and rear wheels, as
required, for increased traction. This is appropriate for all on-road
driving conditions, including as dry road surfaces, but is especially
useful on wet pavement, snow, dirt, or gravel.
•4H (4X4 HIGH)- provides electronically locked four-wheel drive
power to front and rear wheels. This position is not recommended for
use on dry pavement. This position is only intended for severe winter
or off-road conditions, such as deep snow, ice or shallow sand.Note:
Do not use 4H (4X4 HIGH) on dry, hard surfaced roads. Doing so can
produce excessive noise and increased tire wear. 4H (4X4 HIGH) is
only intended for consistently slippery or loose surfaces. Use of 4H
(4X4 HIGH) on these surfaces may produce some noise (such as
occasional clunks), but will not damage drive components.
•
4L (4X4 LOW)- provides electronically locked four-wheel drive when
extra power at reduced speeds is required. This position is not
recommended for use on dry pavement. Use this position for off-road
low-speed operation or when extra power is required, such as climbing
steep grades, going through deep sand or pulling a boat out of the water.
4L (4X4 LOW) will not engage while the vehicle is moving above 3 mph
(5 km/h); this is normal and should be no reason for concern. Refer to
Shifting to/from 4L (4X4 LOW)for proper operation.Note:Do not use
4L (4X4 LOW) on dry, hard surfaced roads. Doing so can produce
excessive noise and increased tire wear. 4L (4X4 LOW) is only intended
for consistently slippery or loose surfaces. Use of 4L (4X4 LOW) on
these surfaces may produce some noise (such as occasional clunks), but
will not damage drive components.
Note:The AdvanceTrac system has the ability to take over control of the
transfer case clutch and disable it during driving maneuvers when necessary.
Shifting between 2H (4X2) and 4A (Two-speed automatic 4WD) or
4H (4X4 HIGH )
Move the control from 2H to 4A or 4H at a stop or while driving at any
forward speed. The message center may display4X4 SHIFT IN
PROGRESSduring the system shift. The message center will then display
4X4 AUTOif 4A has been selected or4X4 HIGHif 4H is selected. The
message center will momentarily display4X2if 2H has been selected.
Note:Do not perform this operation if the rear wheels are slipping.
Note:Some noise may be heard as the system shifts or engages; this is
normal.
Note:4X4 high mode is not intended for use on dry pavement.
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Shifting between 4A (Two-speed automatic 4WD) and 4H (4X4 HIGH)
Move the control from 4A to 4H at a stop or while driving at any speed.
The message center will display4X4 AUTOif 4A has been selected and
4X4 HIGHif 4H has been selected.
Note:4x4 High mode is not intended for use on dry pavement.
Shifting to/from 4L (4X4 LOW)
1. Bring the vehicle to a rolling speed of 3 mph (5 km/h) or less.
2. Place the gearshift in N (Neutral).
3. Move the 4WD control to the desired position.
The message center will display4X4 SHIFT IN PROGRESSduring the
shift. The message center will then display the system mode selected.
If any of the above shift conditions are not met, the shift will not occur
and the message center will display information guiding the driver
through the proper range of shifting procedures.
IfSHIFT DELAYED PULL FORWARDis displayed in the message
center, transfer case gear tooth blockage is present. To alleviate this
condition, place the transmission in a forward gear, move the vehicle
forward approximately 5 feet (2 meters), and shift the transmission back
to neutral to allow the transfer case to complete the range shift.
Note:Some noise may be heard as the system shifts or engages; this is
normal.
Note:4x4 low mode is not intended for use on dry pavement
Electronic locking differential (ELD) (if equipped)
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.
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Activating the electronic locking differential (ELD)
The ELD can be turned on by
pulling the 4WD control knob
toward you (4x4 vehicles) or by
turning the ELD control knob from
OFF to ON (4x2 vehicles).
Once the indicator light is displayed
in the message center, 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 will be accompanied by aCHECK
LOCKING DIFFERENTIALmessage in the message center.
Note:If the ELD has difficulty disengaging, release the accelerator pedal
and turn the steering wheel in the opposite direction while rolling.
Basic operating principles
Do not use 4WD on dry, hard surfaced roads. Doing so will produce
excessive noise and vibration and increase tire wear. 4WD modes are
only intended for consistently slippery or loose surfaces.
Parking
On 4WD vehicles, when the transfer case is in the N (Neutral) position
for recreational towing purposes, the engine and transmission are
disconnected from the rest of the driveline. Therefore, the vehicle is free
to roll even if the automatic transmission is in P (Park) or the manual
transmission is in gear. Do not leave the vehicle unattended with the
transfer case in the N (Neutral) position. Always set the parking brake
fully and turn off the ignition when leaving the vehicle. Refer to
Recreational towingfor more information.
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Driving off-road with truck and utility vehicles
4WD vehicles are specially equipped for driving on sand, snow, mud and
rough terrain and have operating characteristics that are somewhat
different from conventional vehicles, both on and off the road.
Your vehicle may be equipped with a front air dam that can become
damaged (due to reduced ground clearance) when taking your vehicle
off-road. This air dam can be taken off by removing two bolts.
For vehicles equipped with a 3.5L Ecoboost™ engine:
Your vehicle is equipped with an underbody transmission shield and
brackets that may become damaged (due to reduced ground clearance)
when taking your vehicle off-road. Remove the shield by disengaging the
fasteners at each corner of the shield. Then, remove the shield rear
brackets by removing the bracket to frame bolts, or have your authorized
dealer perform the work for you
How your vehicle differs from other vehicles
Truck and utility vehicles can differ from some other vehicles. Your
vehicle may be higher to allow it to travel over rough terrain without
getting hung up or damaging underbody components.
The differences that make your vehicle so versatile also make it handle
differently than an ordinary passenger car.
Maintain steering wheel control at all times, especially in rough terrain.
Since sudden changes in terrain can result in abrupt steering wheel
motion, make sure you grip the steering wheel from the outside. Do not
grip the spokes.
Drive cautiously to avoid vehicle damage from concealed objects such as
rocks and stumps.
You should either know the terrain or examine maps of the area before
driving. Map out your route before driving in the area. To maintain
steering and braking control of your vehicle, you must have all four
wheels on the ground and they must be rolling, not sliding or spinning.
Basic operating principles
•
Do not use 4WD on dry, hard surfaced roads. Doing so will produce
excessive noise, increase tire wear and may damage drive components.
4WD modes are only intended for consistently slippery or loose surfaces.
•Drive slower in strong crosswinds which can affect the normal steering
characteristics of your vehicle.
•Be extremely careful when driving on pavement made slippery by
loose sand, water, gravel, snow or ice.
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Emergency maneuvers
•In an unavoidable emergency situation where a sudden sharp turn
must be made, remember to avoid “over-driving” your vehicle, i.e.,
turn the steering wheel only as rapidly and as far as required to avoid
the emergency. Excessive steering will result in less vehicle control,
not more. Additionally, smooth variations of the accelerator and/or
brake pedal pressure should be utilized if changes in vehicle speed are
called for. Avoid abrupt steering, acceleration or braking which could
result in an increased risk of loss of vehicle control, vehicle rollover
and/or personal injury. Use all available road surface to return the
vehicle to a safe direction of travel.
•In the event of an emergency stop, avoid skidding the tires and do not
attempt any sharp steering wheel movements.
•If the vehicle goes from one type of surface to another (i.e., from
concrete to gravel) there will be a change in the way the vehicle
responds to a maneuver (steering, acceleration or braking). Again,
avoid these abrupt inputs.
Parking
On some 4WD vehicles, when the transfer case is in the N (Neutral)
position, the engine and transmission are disconnected from the rest of
the driveline. Therefore, the vehicle is free to roll even if the automatic
transmission is in P (Park) or the manual transmission is in gear. Do not
leave the vehicle unattended with the transfer case in the N (Neutral)
position. Always set the parking brake fully and turn off the ignition
when leaving the vehicle.
WARNING:Always set the parking brake fully and make sure
the gearshift is latched in P (Park). Turn the ignition to the off
position and remove the key whenever you leave your vehicle.
WARNING:If the parking brake is fully released, but the brake
warning lamp remains illuminated, the brakes may not be
working properly. See your authorized dealer.
4WD systems
4WD (when you select a 4WD mode) uses all four wheels to power the
vehicle. This increases traction, enabling you to drive over terrain and
road conditions that a conventional two-wheel drive vehicle cannot.
Power is supplied to all four wheels through a transfer case. On 4WD
vehicles, the transfer case allows you to select 4WD when necessary.
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Information on transfer case operation and shifting procedures can be
found in this chapter. Information on transfer case maintenance can be
found in theMaintenance and Specificationschapter. You should
become thoroughly familiar with this information before you operate
your vehicle.
Normal characteristics
On some 4WD models, the initial shift from two-wheel drive to 4x4 while
the vehicle is moving can cause some momentary clunk and ratcheting
sounds. This is the front drivetrain coming up to speed and the
automatic locking hubs engaging and is not cause for concern.
Sand
When driving over sand, try to keep all four wheels on the most solid
area of the trail. Avoid reducing the tire pressures but shift to a lower
gear and drive steadily through the terrain. Apply the accelerator slowly
and avoid spinning the wheels.
Avoid excessive speed because vehicle momentum can work against you
and cause the vehicle to become stuck to the point that assistance may
be required from another vehicle. Remember, you may be able to back
out the way you came if you proceed with caution.
Mud and water
If you must drive through high
water, drive slowly. Traction or
brake capability may be limited.
When driving through water,
determine the depth; avoid water
higher than the bottom of the hubs
(if possible) and proceed slowly. If
the ignition system gets wet, the
vehicle may stall.
Once through water, always try the brakes. Wet brakes do not stop the
vehicle as effectively as dry brakes. Drying can be improved by moving
your vehicle slowly while applying light pressure on the brake pedal.
Be cautious of sudden changes in vehicle speed or direction when you
are driving in mud. Even 4WD vehicles can lose traction in slick mud. As
when you are driving over sand, apply the accelerator slowly and avoid
spinning your wheels. If the vehicle does slide, steer in the direction of
the slide until you regain control of the vehicle.
If the transmission, transfer case or front axle are submerged in water,
their fluids should be checked and changed, if necessary.
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Descend a hill in the same gear you
would use to climb up the hill to
avoid excessive brake application and
brake overheating. Do not descend in
neutral; instead, disengage overdrive
or manually shift to a lower gear.
When descending a steep hill, avoid
sudden hard braking as you could
lose control. When you brake hard,
the front wheels can’t turn and if
they aren’t turning, you won’t be able
to steer. The front wheels have to be
turning in order to steer the vehicle.
If your vehicle has anti-lock brakes, apply the brakes steadily. Do not
“pump” the brakes.
Driving on snow and ice
4WD vehicles have advantages over 2WD vehicles in snow and ice but
can skid like any other vehicle.
Should you start to slide while driving on snowy or icy roads, turn the
steering wheel in the direction of the slide until you regain control.
Avoid sudden applications of power and quick changes of direction on
snow and ice. Apply the accelerator slowly and steadily when starting
from a full stop.
Avoid sudden braking as well. Although a 4WD vehicle may accelerate
better than a two-wheel drive vehicle in snow and ice, it won’t stop any
faster, because as in other vehicles, braking occurs at all four wheels. Do
not become overconfident as to road conditions.
Make sure you allow sufficient distance between you and other vehicles for
stopping. Drive slower than usual and consider using one of the lower gears.
In emergency stopping situations, apply the brake steadily. Do not “pump”
the brakes. Refer to theBrakessection of this chapter for additional
information on the operation of the Anti-lock Brake System (ABS).
WARNING:If you are driving in slippery conditions that require
tire chains or cables, then it is critical that you drive cautiously.
Keep speeds down, allow for longer stopping distances and avoid
aggressive steering to reduce the chances of a loss of vehicle control
which can lead to serious injury or death. If the rear end of the vehicle
slides while cornering, steer in the direction of the slide until you
regain control of the vehicle.
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