Ford F-550 (2022 year). Manual in english — page 13
Before you start manual regeneration, do
the following:
•
Shift into park (P) and apply the
parking brake, on stable, level ground.
•
Park your vehicle outside of any
structure.
•
Park your vehicle 10–15 ft (3–5 m)
away from any obstructions and away
from materials that can easily combust
or melt, for example paper, leaves,
petroleum products, fuels, plastics and
other dry organic material.
•
Make sure there is a minimum of 1/8
tank of fuel.
•
Make sure all fluids are at proper levels.
DIESEL PARTICULATE FILTER
MANUAL REGENERATION
LIMITATIONS
You cannot use manual regeneration until
the diesel particulate filter load percentage
has reached 100%. The diesel particulate
filter load percentage fluctuates up and
down when driving your vehicle due to
active and passive regenerations.
If your vehicle is operated with significant
stationary operation, low speed drive
cycles less than 25 mph (40 km/h), short
drive cycles, drive time less than 15 minutes
or the vehicle does not fully warm up,
passive and active regeneration may not
sufficiently clean the diesel particulate
filter system.
Aftermarket devices or modifications to
the exhaust system may reduce the
effectiveness of the exhaust system as
well as cause damage to the exhaust
system or engine. This may also degrade
vehicle performance and could lead to
engine damage that may not be covered
by the vehicle Warranty.
STARTING DIESEL PARTICULATE
FILTER MANUAL REGENERATION
Start with your vehicle engine and when it
has reached the normal operating
temperature, press the information display
control button on the steering wheel. See
If the diesel particulate filter is near or at
saturation, a message requesting
permission to initiate filter cleaning
appears in the information display. See
Diesel Particulate Filter – Information
Messages
(page 215). Answer yes to this
prompt and then follow the next prompts
regarding exhaust position required to
initiate manual regeneration. Be sure to
understand each prompt. If you are not
sure what is being asked by each prompt,
contact an authorized dealer. The display
confirms the operation has started and
when it has finished. You can also drive to
clean the filter.
When the system is at the point
of oversaturation, the service
engine warning lamp illuminates
and a message appears in the information
display. You cannot initiate filter cleaning.
You must have your vehicle checked as
soon as possible.
Once manual regeneration starts, engine
speed increases to approximately 1600
rpm and the cooling fan speed increases.
You will hear a change in audible sound
due to engine speed and cooling fan speed
increases.
It is not necessary to open the hood on the
engine compartment. Once manual
regeneration completes, the engine speed
returns to normal idling. The exhaust
system remains very hot for several
minutes even after regeneration is
complete. Do not reposition the vehicle
over materials that could burn until the
214
Diesel Particulate Filter
exhaust system has had sufficient time to
cool. Depending on the amount of soot
collected by the diesel particulate filter,
ambient temperature and altitude, manual
regeneration lasts approximately 30
minutes.
DIESEL PARTICULATE FILTER
– TROUBLESHOOTING
DIESEL PARTICULATE FILTER –
WARNING LAMPS
If filter service is required, the
engine control system warning
lamp illuminates in the
information display.
If there are any issues with the
diesel particulate filter system,
the engine control system
warning lamp and a service
engine soon warning lamp
illuminate to inform you that
your vehicle requires service. Have your
vehicle checked as soon as possible.
DIESEL PARTICULATE FILTER – INFORMATION MESSAGES
Action
Message
Your vehicle has entered the cleaning mode. Various engine
actions will raise the exhaust temperature in the Diesel
Particulate Filter system to burn off the particles (exhaust
soot). After the vehicle burns the particles off, the exhaust
temperature will return to normal levels. This message is
NORMAL.
Exhaust Filter Cleaning
The diesel particulate filter is full of particles (exhaust soot)
and you are not operating the vehicle in a manner that allows
normal cleaning. Drive the vehicle above 30 mph (48 km/h)
until the message turns off.
Exhaust Filter Over-
loaded Drive to Clean
Exhaust Filter Over-
loaded Clean Now
The diesel particulate filter is full of particles (exhaust soot)
and you are not operating the vehicle in a manner that allows
normal cleaning. Drive the vehicle above 30 mph (48 km/h)
until the message turns off.
Exhaust Filter at Limit
Clean Now
Exhaust Filter at Limit
Drive to Clean Now
Your diesel particulate filter is clean.
Exhaust Filter Drive
Complete
215
Diesel Particulate Filter
Action
Message
Your diesel particulate filter is clean (OCR Only).
Exhaust Filter Cleaned
The manual regeneration process has stopped (OCR Only).
Exhaust Filter Cleaning
Stopped
You must have your vehicle serviced by an authorized dealer.
Ignoring this warning message could lead to reduced drivability
and customer expense, including damage to the diesel
particulate filter. Your new vehicle warranty may not cover
this damage.
Exhaust Filter Over Limit
Service Now
216
Diesel Particulate Filter
WHAT IS THE SELECTIVE
CATALYTIC REDUCTION
SYSTEM
The selective catalytic reduction system
helps reduce emission levels of oxides of
nitrogen from the exhaust system.
HOW DOES THE SELECTIVE
CATALYTIC REDUCTION
SYSTEM WORK
The selective catalytic reduction system
injects diesel exhaust fluid into the exhaust
system to enable correct selective catalytic
reduction system function.
SELECTIVE CATALYTIC
REDUCTION SYSTEM
PRECAUTIONS
WARNING:
Keep diesel exhaust
fluid out of reach of children. Avoid
contact with skin, eyes or clothing. In
case of contact with your eyes, flush
immediately with water and get prompt
medical attention. In case of contact
with your skin, clean immediately with
soap and water. If you swallow any
diesel exhaust fluid, drink plenty of
water, call a physician immediately.
WARNING:
Only refill the diesel
exhaust fluid tank in a well ventilated
area. When you remove the diesel
exhaust fluid tank filler cap or a diesel
exhaust fluid container cap, ammonia
vapors may escape. Ammonia vapors
can be irritating to skin, eyes and mucous
membranes. Inhaling ammonia vapors
can cause burning to the eyes, throat and
nose and cause coughing and watery
eyes.
WARNING:
Diesel exhaust fluid
must be refilled when low or replaced
when contaminated or your vehicle
speed becomes limited to 50 mph
(80 km/h). In these conditions, drive with
caution and refill diesel exhaust fluid
immediately. If the diesel exhaust fluid
becomes empty or contaminated and
fluid is not replaced, your vehicle
becomes limited to engine idle only once
stopped. In these conditions, be cautious
where you stop your vehicle because you
may not be able to drive long distances
or maintain highway speeds until you
refill or replace the diesel exhaust fluid.
WARNING:
Tampering with or
disabling the selective catalytic
reduction system results in severe
vehicle performance limitation including
eventual speed limiting to 5 mph
(8 km/h).
Note:
Do not put diesel exhaust fluid in the
fuel tank. This can cause damage that your
vehicle Warranty may not cover.
Selective catalytic reduction systems are
sensitive to contamination of the diesel
exhaust fluid. Maintaining the purity of the
fluid is important to avoid system
malfunctions. If you remove or drain the
diesel exhaust fluid tank, do not use the
same fluid to refill the tank. The system
has a sensor to monitor fluid quality.
217
Selective Catalytic Reduction System
Driving without refilling, replacing
contaminated diesel exhaust fluid, or
having the selective catalytic reduction
system repaired results in the following
actions as required by the California Air
Resources Board (CARB) and the U.S.
Environmental Protection Agency (EPA):
•
Within a preset distance to empty,
speed is limited upon vehicle restart.
Prior to this occurring a message
appears in the information display.
•
Further vehicle operation without
refilling or replacing contaminated
diesel exhaust fluid causes the engine
to enter an idle-only condition. This
only occurs upon vehicle refueling,
vehicle idling in park for 1 hour, or
engine shutdown for 10 minutes or
more and is indicated by a message in
the information display indicating
required actions to resume normal
operation. It is required to add a
minimum of 1.0 gal (3.8 L) of diesel
exhaust fluid to the tank to exit the
idle-only condition, but your vehicle is
still in the speed-limiting mode until
you refill the tank completely.
Note:
For vehicle speed limiting or idle-only
condition, normal vehicle operation resumes
when you refill the diesel exhaust fluid tank
or repair the contaminated system. If the
system is contaminated or inoperative, have
your vehicle checked as soon as possible.
SELECTIVE CATALYTIC
REDUCTION SYSTEM
REQUIREMENTS
E163354
Only use diesel exhaust fluid that is
certified by the American Petroleum
Institute (API).
You can purchase diesel exhaust fluid at
an authorized dealer, or contact roadside
assistance for help in finding a retailer that
sells diesel exhaust fluid.
Note:
Non-certified diesel exhaust fluid use
can cause damage that your Warranty may
not cover
SELECTIVE CATALYTIC
REDUCTION SYSTEM
GUIDELINES
•
Diesel exhaust fluid is non-flammable,
non-toxic, colorless and water-soluble
liquid.
•
In order for the system to operate
correctly you must maintain the diesel
exhaust fluid level.
•
Do not overfill the diesel exhaust fluid
tank.
•
Diesel exhaust fluid is corrosive.
218
Selective Catalytic Reduction System
•
Avoid spilling diesel exhaust fluid on
painted surfaces, carpeting or plastic
components. Immediately wipe away
any diesel exhaust fluid that has spilled
with a damp cloth and water. If it has
already crystallized, use warm water
and a sponge.
•
Do not store the diesel exhaust fluid
bottle in your vehicle. If it leaks it could
cause damage to interior components
or release an ammonia odor inside your
vehicle.
•
Do not re-use the diesel exhaust fluid
container once it is emptied.
•
Store diesel exhaust fluid out of direct
sunlight and in temperatures between
23–68°F (-5–20°C).
•
The system has a diesel exhaust fluid
quality sensor. Dilution of diesel
exhaust fluid or use of any other liquid
in the selective catalytic reduction
system leads to a diesel exhaust fluid
system fault, eventually leading to the
vehicle only operating in idle-only
mode.
•
Do not dilute diesel exhaust fluid with
water or any other liquid.
FILLING THE SELECTIVE
CATALYTIC REDUCTION
SYSTEM TANK
FILLING THE SELECTIVE
CATALYTIC REDUCTION SYSTEM
TANK IN COLD WEATHER
Diesel exhaust fluid may freeze if the
ambient temperature is below 12°F (-11°C).
Your vehicle has a preheating system
which allows diesel exhaust fluid to
operate below 12°F (-11°C). If you do not
use your vehicle for an extended period
when the ambient temperature is below
12°F (-11°C), the fluid in the tank may
freeze. If the tank is overfilled and the fluid
freezes it may cause damage that your
Warranty will not cover.
FILLING THE SELECTIVE
CATALYTIC REDUCTION SYSTEM
TANK USING A FUEL STATION
PUMP
Filling the diesel exhaust fluid tank using
a fuel station pump is similar to refueling
your vehicle.
1.
Fully open the fuel filler door.
E328788
2. Remove the diesel exhaust fluid tank
filler cap.
219
Selective Catalytic Reduction System
Note:
The diesel exhaust fluid tank has a
blue filler cap.
3. Fully insert the diesel exhaust fluid
pump nozzle.
E328783
4. Operate the diesel exhaust fluid pump
nozzle within the area shown.
Note:
The pump nozzle shuts off when the
tank is full.
5. Slightly raise the diesel exhaust fluid
pump nozzle and then slowly remove
it.
6. Replace the diesel exhaust fluid tank
filler cap. Turn it clockwise until you
feel a strong resistance and it clicks.
FILLING THE SELECTIVE
CATALYTIC REDUCTION SYSTEM
TANK USING A PORTABLE
CONTAINER
The following procedure applies to
Motorcraft diesel exhaust fluid or similar
fluid containers. Follow the
manufacturer's instructions.
1.
Fully open the fuel filler door.
2. Remove the diesel exhaust fluid
container cap.
3. Place the spout on to the container and
tighten it until you feel a strong
resistance.
E328788
4. Remove the diesel exhaust fluid tank
filler cap.
Note:
The diesel exhaust fluid tank has a
blue filler cap.
5. Insert the spout into the filler neck until
the seal on the spout fully seats.
6. Pour the fluid into the tank.
Note:
The fluid stops flowing when the tank
is full.
7.
Return the container to the vertical
position slightly below the diesel
exhaust fluid filler neck.
8. Allow any fluid remaining in the spout
to drain back into the container.
9. Remove the spout from the diesel
exhaust fluid filler neck.
10.
Replace the diesel exhaust fluid tank
cap. Turn it clockwise until you feel
a strong resistance and it clicks.
11.
Remove the spout from the diesel
exhaust fluid container and replace
the cap.
Note:
If there is diesel exhaust fluid left in
the container retain it for later use. The
spout is reusable. Wash the spout with
clean water prior to storage. Do not use the
diesel exhaust fluid spout with any other
fluid.
220
Selective Catalytic Reduction System
CHECKING THE SELECTIVE
CATALYTIC REDUCTION
SYSTEM STATUS
The information display shows a series of
messages about the amount of diesel
exhaust fluid available. A systems check
displays messages indicating the amount
of diesel exhaust fluid available or displays
a warning message indicating the
approximate distance remaining as the
fluid in the diesel exhaust fluid tank nears
empty. See
Reduction System – Information
Messages
DIESEL EXHAUST FLUID
CAPACITY AND
SPECIFICATION
For filling information please refer to the
Capacities and Specifications section of
the owner's manual. See
Fluid Capacity and Specification
SELECTIVE CATALYTIC
REDUCTION SYSTEM –
TROUBLESHOOTING
SELECTIVE CATALYTIC
REDUCTION SYSTEM – WARNING
LAMPS
E163176
As the diesel exhaust fluid level
nears empty, the warning
symbol displays and a series of
tones and messages starting at 500 mi
(800 km) remaining before diesel exhaust
fluid is depleted. The warning symbol and
messages continue until you refill the
diesel exhaust fluid tank.
The warning lamp illuminates and a
message appears in the information
display if the system becomes
contaminated or inoperative.
SELECTIVE CATALYTIC REDUCTION SYSTEM – INFORMATION
MESSAGES
Action
Message
The distance you can travel before depleting the remaining
diesel exhaust fluid. Refill as soon as possible.
DEF Level Range: XX mi/
km Refill Now
Your diesel exhaust fluid is nearing empty. Your vehicle’s top
speed will become limited in the displayed distance. You must
replenish the diesel exhaust fluid to resume normal operation
of your vehicle. See
Diesel Exhaust Fluid Capacity and
DEF Level Empty Speed
Limited to XX MPH / km/
h in XX mi/km
Your remaining diesel exhaust fluid has depleted. Your speed
will be limited upon restart. You must replenish the diesel
exhaust fluid to resume normal operation of your vehicle. See
Diesel Exhaust Fluid Capacity and Specification
DEF Level Empty Speed
Limited to XX MPH/km/
h Upon Restart
221
Selective Catalytic Reduction System
Action
Message
The diesel exhaust fluid is empty. You must replenish the
diesel exhaust fluid to resume normal operation of your
vehicle. See
Diesel Exhaust Fluid Capacity and Specific-
DEF Level Low Speed
Limited to XX MPH/km/
h
The selective catalytic reduction system detects low exhaust
fluid. The engine will eventually enter into an idle only mode.
You must replenish the diesel exhaust fluid to resume normal
operation of your vehicle. See
DEF Level Empty Engine
Idled Soon
The vehicle will enter into an idle only mode. You must
replenish the diesel exhaust fluid to resume normal operation
of your vehicle. See
Diesel Exhaust Fluid Capacity and
DEF Level Empty Engine
Idled See Manual
The selective catalytic reduction system detects a fault. The
vehicle’s top speed will become limited in the displayed
distance and count down from this point. Have your vehicle
checked as soon as possible.
DEF Fault Speed Limited
to XX MPH/km/h in XX
mi/km
The selective catalytic reduction system detects a fault. The
vehicle’s top speed will become limited upon restarting. Have
your vehicle checked as soon as possible.
DEF Fault Speed Limited
to XX MPH/km/h Upon
Restart
The selective catalytic reduction system detects a fault. The
vehicle’s top speed is limited. Have your vehicle checked as
soon as possible.
DEF Fault Speed Limited
to XX MPH/km/h
The selective catalytic reduction system detects a fault. The
engine will eventually enter into an idle only mode. Have your
vehicle checked as soon as possible.
DEF Fault Engine Idled
Soon
222
Selective Catalytic Reduction System
WHAT IS THE CATALYTIC
CONVERTER
The catalytic converter is part of your
vehicle's emissions system and filters
harmful pollutants from the exhaust gas.
CATALYTIC CONVERTER
PRECAUTIONS
WARNING:
Do not park, idle or
drive your vehicle on dry grass or other
dry ground cover. The emission system
heats up the engine compartment and
exhaust system, creating the risk of fire.
WARNING:
The normal operating
temperature of the exhaust system is
very high. Never work around or attempt
to repair any part of the exhaust system
until it has cooled. Use special care when
working around the catalytic converter.
The catalytic converter heats up to a very
high temperature after only a short
period of engine operation and stays hot
after the engine is switched off.
To avoid damaging the catalytic converter:
•
Do not crank the engine for more than
10 seconds at a time.
•
Do not run the engine with a spark plug
lead disconnected.
•
Do not push-start or tow-start your
vehicle. Use booster cables. See
•
Use the correct fuel. See
•
Do not switch the ignition off when your
vehicle is moving.
•
Avoid running out of fuel.
•
Have the items listed in scheduled
maintenance information performed
according to the specified schedule.
Note:
Do not make any unauthorized
changes to your vehicle or engine. By law,
vehicle owners and anyone who
manufactures, repairs, or services a fleet of
vehicles are not permitted to intentionally
remove an emission control device or
prevent it from working.
CATALYTIC CONVERTER –
TROUBLESHOOTING
CATALYTIC CONVERTER –
WARNING LAMPS
Your vehicle has an on-board diagnostics
system that monitors the emission control
system. If any of the following warning
lamps illuminate, this may indicate that
the on-board diagnostics system has
detected an emission control system
malfunction.
Continuing to drive your vehicle may cause
reduced power or the engine to stop.
Failure to respond to a warning lamp may
cause damage that your vehicle Warranty
may not cover. Have your vehicle checked
as soon as possible.
223
Catalytic Converter
AUTOMATIC TRANSMISSION
PRECAUTIONS
WARNING:
Apply the parking
brake, shift into park (P), switch the
ignition off and remove the key before
you leave your vehicle. Failure to follow
this instruction could result in personal
injury or death.
WARNING:
Do not use tow/haul
when the road surface is slippery. Failure
to follow this instruction could result in
the loss of control of your vehicle.
WARNING:
When your vehicle is
stationary, keep the brake pedal fully
pressed when shifting gears. Failure to
follow this instruction could result in
personal injury, death or property
damage.
WARNING:
Do not apply the brake
pedal and accelerator pedal
simultaneously. Applying both pedals
simultaneously for more than a few
seconds will limit engine performance,
which may result in difficulty maintaining
speed in traffic and could lead to serious
injury.
AUTOMATIC TRANSMISSION
POSITIONS
PARK (P)
This position locks the driveline and
prevents the wheels from turning. Come
to a complete stop before putting your
vehicle into and out of park (P).
REVERSE (R)
WARNING:
Move the transmission
selector lever to reverse (R) only when
your vehicle is stationary and the engine
is at idle speed.
This position allows your vehicle to move
backward. Come to a complete stop
before shifting into and out of reverse (R).
NEUTRAL (N)
WARNING:
In neutral (N) your
vehicle is free to roll.
This position allows your vehicle to roll
free. Hold the brake pedal down when in
this position.
Note:
You can start your vehicle in this
position.
DRIVE (D)
Drive (D) is the normal driving position, and
allows automatic upshifts and downshifts
through all available gears.
MANUAL (M)
To select manual (M) mode, place the
gearshift in the manual (M) position.
This position allows you to change gears
up or down as preferred using the + or -
buttons on the shifter lever.
To return to the normal drive (D) position,
move the shifter into the drive (D) position.
SHIFTING YOUR VEHICLE INTO
GEAR
1.
Fully press down on the brake pedal.
224
Automatic Transmission
2. Move the gearshift lever into the
desired gear.
3. When you finish driving, come to a
complete stop.
4. Pull lever toward the driver and move
the gearshift lever and securely latch
it in park (P).
MANUALLY SHIFTING GEARS
SHIFTING USING THE BUTTONS
ON THE SELECTOR LEVER
Pressing the manual (M) button on the
shifter allows you to select the gear you
prefer. Only the current gear displays. Press
the
+
button to upshift or the
–
button to
downshift. Return the transmission to a
different gearshift position to deactivate
manual control or press manual (M).
Your vehicle has a SelectShift Automatic
transmission gearshift lever. This gives you
the ability to change gears up or down,
without a clutch, as preferred.
Note:
To prevent the engine from running
at too low an RPM, which could cause it to
stall, SelectShift still makes some
downshifts if it determines that you have
not downshifted in time. Although
SelectShift makes some downshifts for you,
it still allows you to downshift at any time
if it determines that damage to the engine
from over-revving does not occur.
Note:
SelectShift does not automatically
upshift, even if the engine is approaching
the RPM limit. Shift manually by pressing
the
+
button.
Note:
Engine damage could occur if you
maintain excessive engine revving without
shifting.
E312894
BRAKE SHIFT INTERLOCK
WHAT IS BRAKE SHIFT
INTERLOCK
Brake shift interlock prevents you from
shifting out of park (P) when you have
switched the ignition on and not pressed
the brake pedal.
BRAKE SHIFT INTERLOCK
PRECAUTIONS
WARNING:
Do not drive your
vehicle until you verify that the
stoplamps are working.
WARNING:
When doing this
procedure, you need to take the
transmission out of park (P) which
means your vehicle can roll freely. To
avoid unwanted vehicle movement,
always fully apply the parking brake prior
to doing this procedure. Use wheels
chocks if appropriate.
225
Automatic Transmission
WARNING:
If the parking brake is
fully released, but the brake warning
lamp remains illuminated, the brakes
may not be working properly. Have your
vehicle checked as soon as possible.
In the event of an electrical malfunction,
it is possible that a fuse has blown or the
stoplamps are not working. See
If the vehicle battery has no charge, jump
start your vehicle.
USING BRAKE SHIFT INTERLOCK
Brake-Shift Interlock
The following procedure allows you to
move the gearshift lever from park (P):
1.
Apply the parking brake. Switch the
ignition key to 1 - 0, then remove the
key.
2. Move the steering column to the full
down and full rearward position,
toward the driver seat.
3. Remove the gearshift lever boot.
4. Place your fingers into the hole where
you removed the gearshift lever boot
and pull the top half of the shroud up
and forward to separate it from the
lower half of the shroud. There is a
hinge at the forward edge of the top
shroud. Roll the top half of the shroud
upward on the hinge point, then pull
straight rearward toward the driver
seat to remove.
5. Remove the top half of the shroud.
6. Remove the three fasteners under the
column that secure the lower shroud
half to the column.
E163185
7.
Pull the lock lever into the fully
unlocked position and remove the
lower shroud cover by pulling the lever
handle through the slot in the cover.
8. Apply the brake. Gently lift the override
disk and move the gearshift lever into
neutral (N).
E163186
9. Start your vehicle.
Perform steps 4 through 8 in reverse order
to get the shroud back together, making
sure to engage the hinge pivots between
the upper and lower halves of the shroud.
Keep slight pressure in the forward
direction as you rotate the halves together.
226
Automatic Transmission
POWER TAKE-OFF
(IF EQUIPPED)
HOW DOES THE POWER TAKE-
OFF WORK
Auxiliary equipment called power take-off,
or PTO, is often added to the engine or
transmission to operate utility equipment.
Examples include a wheel-lift for tow
trucks, cranes, tools for construction or tire
service, and pumping fluids. PTO
applications draw auxiliary horsepower
from the powertrain, often while the
vehicle is stationary. In this condition, there
is limited cooling air flow through the
radiator and around the vehicle that
normally occurs when a vehicle is moving.
The aftermarket PTO system installer,
having the most knowledge of the final
application, is responsible for determining
whether additional chassis heat protection
or powertrain cooling is required, and
alerting the user to the safe and proper
operation.
Note:
Use of auxiliary equipment that
exceeds the maximum Power Take-Off
(PTO) load specified in our Truck Body
Builders Layout Book can adversely affect
the performance of the powertrain system.
Refer to the Body Builders Layout Book for
instructions about the appropriate
installation of additional equipment.
For additional information, visit
WHAT IS THE SPLIT SHAFT
CAPABILITY
Split shaft capability is when the output
gear connects directly with the engine to
power your power takeoff (PTO), anytime
the engine is running.
This feature is approved as a stationary
mobile power source, within the limits and
operating guidelines detailed in our Truck
Body Builders Layout Book. For additional
information, visit
227
Automatic Transmission
HOW DOES FOUR-WHEEL
DRIVE WORK
Using the Electronic Shift On the
Fly System
(If Equipped)
This four-wheel drive system utilizes a
2-speed Electronic Shift On the Fly (ESOF)
transfer case which is also known as a
part-time system. This system offers the
driver two-wheel drive high, four-wheel
drive high, and four-wheel drive low as
available modes of operation. When you
select either four-wheel drive high or
four-wheel drive low, the system provides
mechanically locked four-wheel drive
power to both the front and rear wheels
for use in off-road or slippery conditions
such as deep snow, sand or mud. When
you select four-wheel drive low, the system
provides additional gearing for increased
torque multiplication for conditions like
deep sand, steep slopes, or pulling heavy
objects. Additionally, the system is capable
of recreational flat towing by putting the
transfer case into a neutral position. See
Recreationally Towing Your Vehicle
LOCK
O
T
U
A
E339076
For proper operation, make sure that each
hub is fully engaged and that both hub
locks are set to the same position (both
set to lock or both set to auto). To engage
lock, turn the hub locks completely
clockwise. To engage auto, turn the hub
locks completely counterclockwise.
The ESOF four-wheel drive system:
•
Provides 4x4 High engagement and
disengagement while the vehicle is
moving.
•
Operates by a rotary control located
on the instrument panel that allows
you select 4x2, 4x4 High or 4x4 Low
operation.
•
Uses auto-manual hub locks that can
be engaged and disengaged
automatically based on the 4x4 mode
you select.
•
Increases fuel economy when used in
the hub lock's recommended auto
mode.
Note:
Auto-manual hub locks manually
lock by rotating the hub lock control from
auto to lock.
FOUR-WHEEL DRIVE
PRECAUTIONS
WARNING:
Vehicles with a higher
center of gravity (utility and four-wheel
drive vehicles) handle differently than
vehicles with a lower center of gravity
(passenger cars). Avoid sharp turns,
excessive speed and abrupt steering in
these vehicles. Failure to drive cautiously
increases the risk of losing control of your
vehicle, vehicle rollover, personal injury
and death.
228
Four-Wheel Drive
(If Equipped)
WARNING:
If the parking brake is
fully released, but the brake warning
lamp remains illuminated, the brakes
may not be working properly. Have your
vehicle checked as soon as possible.
WARNING:
Do not become
overconfident in the ability of four-wheel
drive vehicles. Although a four-wheel
drive vehicle may accelerate better than
a two-wheel drive vehicle in low traction
situations, it won't stop any faster than
two-wheel drive vehicles. Always drive
at a safe speed.
Truck and utility vehicles can differ from
some other vehicles. Your vehicle could be
higher to allow it to travel over rough
terrain without getting stuck or damaging
underbody components. The differences
that make your vehicle so versatile also
make it handle differently than an ordinary
passenger car. Always maintain steering
wheel control, 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. 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.
Note:
Do not use four-wheel drive high or
four-wheel drive low mode on dry, hard
surfaced roads. Doing so can produce
excessive noise, increase tire wear and can
damage drive components. Four-wheel
drive high or four-wheel drive low modes
are for consistently slippery or loose
surfaces. Use of four-wheel drive low mode
on these surfaces could produce some
noise, such as occasional clunks, but should
not damage drive components. When
transitioning from consistently loose or
slippery surfaces, be sure the four-wheel
drive systems not mechanically blocked
once on dry, hard surfaced roads in
two-wheel drive high.
Parking
WARNING:
If the parking brake is
fully released, but the brake warning
lamp remains illuminated, the brakes
may not be working properly. Have your
vehicle checked as soon as possible.
WARNING:
Apply the parking
brake, shift into park (P), switch the
ignition off and remove the key before
you leave your vehicle. Failure to follow
this instruction could result in personal
injury or death.
On some four-wheel drive vehicles, when
the transfer case is in the neutral (N)
position, the engine and transmission
disconnects from the rest of the driveline.
Therefore, the vehicle is free to roll even if
the automatic transmission is in park (P)
or the manual transmission is in gear. Do
not leave the vehicle unattended with the
transfer case in the neutral (N) position.
Always set the parking brake fully and turn
off the ignition when leaving the vehicle.
229
Four-Wheel Drive
(If Equipped)
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