2012 FORD F150 lock

Using the electronic shift on the fly (ESOF) 4WD system (if equipped)
2H (4X2)- Delivers power to the
rear wheels only. This mode is
appropriate for normal on-road
driving and provides the best fuel
economy and smoothness.
4H (4X4 HIGH)- provides
mechanically locked four-wheel
drive power to the front and rear
wheels. This position is not
recommended for use on dry
pavement. This position is only
intended for off-road or winter 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.
4L (4X4 LOW)- Provides mechanically 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.
Shifting between 2H (4X2) and 4H (4X4 High)
Move the 4WD control between 2H (4X2) and 4H (4X4 HIGH) at any
forward speed. The message center will display4X4 SHIFT IN
PROGRESSduring the system shift.4X4 HIGHwill display in the
message center if 4H is selected and4X2will momentarily display in the
message center if 2H is selected.
IfSHIFT DELAYED PULL FORWARDis displayed in the message
center during the mode shift, transfer case gear tooth blockage is
present. To alleviate this condition, place the transmission in a forward
gear and move the vehicle forward approximately 5 feet (2 meters) to
allow the transfer case to complete the mode shift.
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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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•The ELD will not engage if the accelerator pedal is pressed beyond
50% during an engagement attempt
•In 4x2, 4x4 Auto, and 4x4 High modes, the ELD will automatically
disengage at speeds above 25 mph (40 km/h) and will automatically
reengage at speeds below 18 mph (30 km/h).
•In 4L (4X4 low), the ELD will automatically disengage at speeds above
62 mph (100 km/h) and will automatically reengage at speeds below
56 mph (90 km/h).
•The AdvanceTrac system has the ability to take over control of the
ELD and disable it during driving maneuvers when necessary.
If the required conditions for ELD activation are not met when the
switch is actuated, the instrument cluster will display the appropriate
information guiding the driver through the proper ELD activation
process.
Note:The ELD is designed for off-road use only and is not intended for
use on dry pavement. Using the ELD on dry pavement will result in
increased tire wear, noise and vibration.
Electronic locking differential (ELD) indicator lights
This light will be continuously
displayed in the cluster when the
ELD is active.
The indicator will turn off if the ELD automatically disengages because
the ELD threshold speeds are exceeded and will turn back on when the
ELD automatically reengages when the ELD threshold speeds are not
exceeded.
CHECK LOCKING DIFFERENTIAL– Displays when an ELD fault is
present
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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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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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