Ford F-250 (2022 year). Manual in english — page 14
FOUR-WHEEL DRIVE
LIMITATIONS
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
intended for consistently slippery or loose
surfaces. Use of four 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.
Operating Four-Wheel Drive with
a Spare or Mismatched tires
On four-wheel drive vehicles, the size of
the spare tire can affect the four-wheel
drive system. If there is a significant
difference between the size of the spare
tire and the remaining tires, you could have
limited four-wheel drive functionality.
When driving with the full-size dissimilar
spare wheel and tire assembly, do not:
•
Exceed 50 mph (80 km/h) with a
four-wheel drive mode turned on.
•
Turn on a four-wheel drive mode
unless the vehicle is stationary.
•
Use a four-wheel drive mode on dry
pavement.
When driving with the full-size dissimilar
spare wheel and tire assembly, four-wheel
drive functionality is limited, especially
when driving in a mechanically locked
four-wheel drive mode. You can experience
the following:
•
Additional noise from the transfer case
or other drive components.
•
Difficulty shifting out of a mechanically
locked four-wheel drive mode.
Use of a dissimilar spare wheel and tire
assembly can lead to impairment of the
following:
•
Comfort and noise.
•
Winter weather driving capability.
•
Wet driving capability.
•
Four-wheel drive capability.
SELECTING A FOUR-WHEEL
DRIVE MODE
E227398
The four-wheel drive mode control is on
the instrument panel.
To select a four-wheel drive mode, rotate
the four-wheel drive mode control to
switch to the desired mode. You can select
two-wheel drive high (2H), or four-wheel
drive high (4H), at a stop or while driving.
Once the shift is complete, the information
display then displays the selected
four-wheel drive mode. While shifts are in
progress, you could see messages in the
information display indicating that a shift
is in progress or to release the accelerator
pedal to improve shift performance.
230
Four-Wheel Drive
(If Equipped)
Note:
Do not perform this operation if the
rear wheels are slipping or while applying
the accelerator pedal.
Note:
You could hear some noise as the
system shifts or engages which is normal.
If the system detects a fault, a warning
message appears in the information
display. See
Shifting to or from Four-Wheel
Drive Low (4L)
To select or exit four-wheel drive low (4L):
1.
Bring your vehicle to a speed of 3 mph
(5 km/h) or less.
2. Place the transmission in neutral (N).
3. Move the four-wheel drive control to
the preferred position.
The information display then displays a
message indicating a four-wheel drive shift
is in progress. If any of the above shift
conditions are not present, the shift wont
occur and the information display shows
information guiding the driver through the
proper shifting procedures. If there is a
transfer case tooth blockage Shift Delayed
Pull Forward displays in the information
display. To alleviate this condition, place
the transmission in a forward gear, move
your vehicle forward approximately 5 ft
(1.5 m), and shift the transmission back to
neutral (N) to allow the transfer case to
complete the range shift.
Note:
You could hear some noise as the
system shifts or engages which is normal.
If the system detects a fault, a warning
message appears in the information
display. See
Entering and Exiting Rock Crawl
Mode with Tremor Package
(If
Equipped)
•
To enter rock crawl, your vehicle must
be in 4x4 low (4L).
•
Press the drive mode button on the
shifter column to bring up the
information display and select rock
crawl mode.
•
With the switch in 4x4 low (4L)
position, press rock crawl mode again
to deactivate it.
•
You must first deactivate rock crawl
mode to exit four-wheel drive low (4L).
FOUR-WHEEL DRIVE MODES
TWO-WHEEL DRIVE HIGH
Two-wheel drive high is for general
on-road driving. Power's sent to the rear
wheels only.
FOUR-WHEEL DRIVE HIGH
Four-wheel drive high provides
electronically or mechanically locked
four-wheel drive power to both the front
and rear wheels for use in off-road or
winter conditions such as deep snow, sand
or mud. This mode is not for use on dry
pavement.
FOUR-WHEEL DRIVE LOW
Four-wheel drive low provides
electronically or mechanically locked
four-wheel drive power to both the front
and rear wheels for use on low traction
surfaces, but does so with additional
gearing for increased torque multiplication.
This mode is only for off-road conditions
such as deep sand, steep slopes, or pulling
heavy objects.
231
Four-Wheel Drive
(If Equipped)
FOUR-WHEEL DRIVE
INDICATORS
Two-wheel Drive High
E181778
Momentarily illuminates when
you select two-wheel drive high.
Four-wheel Drive High
E181779
Continuously illuminates when
you select four-wheel drive high.
Four-wheel Drive Low
E181780
Continuously illuminates when
you select four-wheel drive low.
FOUR-WHEEL DRIVE DRIVING
HINTS
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 can result
in loss of vehicle control. Apply smooth
pressure to the accelerator pedal or brake
pedal when changes in vehicle speed are
required. Avoid abrupt steering,
acceleration and braking. This could result
in an increased risk of vehicle roll over, loss
of vehicle control and personal injury. Use
all available road surface to bring your
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 your vehicle goes from one type of
surface to another (i.e. from concrete to
gravel) there can be a change in the way
your vehicle responds to a maneuver, i.e.
steering, acceleration or braking.
DRIVING IN 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 excessive wheel slip.
When driving at slow speeds in deep sand
under high outside temperatures, use a low
gear when possible. Low gear operation
can maximize the engine and transmission
cooling capability.
Avoid driving at excessive speed. This
causes vehicle momentum to work against
you and your vehicle could 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.
DRIVING THROUGH MUD AND
WATER
WARNING:
Do not spin the wheels
at over 34 mph (55 km/h). The tires may
fail and injure a passenger or bystander.
232
Four-Wheel Drive
(If Equipped)
Mud
Be cautious of sudden changes in vehicle
speed or direction when you are driving in
mud. Even four-wheel drive vehicles can
lose traction in slick mud. If your vehicle
does slide, steer in the direction of the slide
until you regain control of your vehicle.
After driving through mud, clean off residue
stuck to rotating driveshafts and tires.
Excess mud stuck on tires and rotating
driveshafts can cause an imbalance that
could damage drive components.
Water
If you must drive through high water, drive
slowly. Traction or brake capability may
be limited. When driving through water,
determine the depth and avoid water
higher than the bottom of the hubs. If the
ignition system gets wet, your vehicle may
stall. Once through water, test the brakes.
Wet brakes do not stop your vehicle as
effectively as dry brakes. Drying improves
by applying light pressure to the brake
pedal while moving slowly.
Note:
Driving through deep water may
damage the transmission. If the front or rear
axle is submerged in water, the axle
lubricant and power transfer unit lubricant
should be checked and changed if
necessary.
DRIVING ON HILLY OR SLOPING
TERRAIN
Although natural obstacles may make it
necessary to travel diagonally up or down
a hill or steep incline, you should try to drive
straight up or straight down.
Note:
Avoid turning on steep slopes or hills.
A danger lies in losing traction, slipping
sideways and possible vehicle roll over.
Whenever driving on a hill, determine
beforehand the route you can use. Do not
drive over the crest of a hill without seeing
what conditions are on the other side. Do
not drive in reverse over a hill without the
aid of an observer.
When climbing a steep slope or hill, start
in a lower gear rather than downshifting to
a lower gear from a higher gear once the
ascent has started. This reduces strain on
the engine and the possibility of stalling.
If your vehicle stalls, do not try to
turnaround because this could cause
vehicle roll over. It is better to reverse back
to a safe location.
Apply just enough power to the wheels to
climb the hill. Too much power can cause
the tires to slip, spin or lose traction,
resulting in loss of vehicle control.
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. Disengage
overdrive or move the transmission
selector lever to a lower gear. When
descending a steep hill, avoid sudden hard
braking as you could lose control. The front
wheels have to be turning in order to steer
your vehicle.
Note:
If your vehicle has anti-lock brakes,
apply the brakes steadily. Do not pump the
brakes.
DRIVING ON SNOW AND ICE
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
233
Four-Wheel Drive
(If Equipped)
chances of a loss of vehicle control
which can lead to serious injury or death.
If the rear end of your vehicle slides while
cornering, steer in the direction of the
slide until you regain control of your
vehicle.
Four-wheel drive vehicles have advantages
over two-wheel drive 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. Although a
four-wheel drive vehicle may accelerate
better than a two-wheel drive vehicle in
snow and ice, it cannot stop any faster as
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 brake
pedal. See
Note:
Excessive tire slippage can cause
transmission damage.
FOUR-WHEEL DRIVE –
TROUBLESHOOTING
FOUR-WHEEL DRIVE – WARNING
LAMPS
CHECK 4X4
Displays when a four-wheel drive
fault is present.
Note:
When a system fault is present, the
system can typically remain in whichever
modes selected prior to the fault condition
occurring. It does not default to two-wheel
drive in all circumstances. When this
warning displays, have your vehicle serviced
by an authorized dealer.
Note:
When a four-wheel drive system fault
is present, the system will typically remain
in whichever four-wheel drive mode was
selected prior to the fault condition
occurring. It will not default to two-wheel
drive in all circumstances. When this
warning displays, have your vehicle serviced
by an authorized dealer.
234
Four-Wheel Drive
(If Equipped)
FOUR-WHEEL DRIVE – INFORMATION MESSAGES
Action
Message
A four-wheel drive system fault is present.
Contact your authorized dealer as soon as
possible.
Check 4x4
The four-wheel drive system is making a
shift.
4x4 Shift in Progress
Displays when you attempt to switch to
four-wheel drive low mode and you do not
shift the transmission to neutral (N).
For 4x4 LOW Shift to N
Displays when you attempt to switch to
four-wheel drive low mode and your
vehicle's speed is greater than 3 mph
(5 km/h).
For 4x4 LOW Slow to 3 MPH
For 4x4 LOW Slow to 5 km/h
Displays when you attempt to switch from
four-wheel drive low mode and you do not
shift the transmission to neutral (N).
To Exit 4x4 LOW Shift to N
Displays when you attempt to switch from
four-wheel drive low mode and your
vehicle's speed is greater than 3 mph
(5 km/h).
To Exit 4x4 LOW Slow to 3 MPH
To Exit 4x4 LOW Slow to 5 km/h
Displays when there is a transfer case gear
tooth blockage while shifting to or from
four-wheel drive low mode or to the neutral
state. Place the transmission in a forward
gear, move your vehicle forward approxim-
ately 5 ft (1.5 m), and shift the transmission
back to neutral (N) to allow the transfer
case to complete the range shift.
Shift Delayed Pull Forward
Displays when the system requires an
additional transmission shift to neutral (N)
to complete a transfer case shift.
Shift to Neutral
235
Four-Wheel Drive
(If Equipped)
Action
Message
Displays when you command a four-wheel
drive shift during conditions which are
potentially harmful to the driveline
components.
To Engage 4x4 Slow to 3 MPH
To Engage 4x4 Slow to 5 km/h
Displays when the four-wheel drive system
requests that you release the accelerator
pedal to complete a four-wheel drive shift.
See
Selecting a Four-Wheel Drive Mode
To Engage 4x4 Release Accelerator Pedal
236
Four-Wheel Drive
(If Equipped)
WHAT IS THE ELECTRONIC
LOCKING DIFFERENTIAL
The electronic locking differential is a
device housed in the axles, and can provide
additional traction when needed.
HOW DOES THE ELECTRONIC
LOCKING DIFFERENTIAL
WORK
You can activate the differential
electronically and shift it on the fly within
the operating speed range. The electronic
differential will disengage when the vehicle
speed exceeds a set value and it will
reengage when the vehicle speed goes
below a set value. See
Electronic Locking Differential On and
Off
(page 237). The electronic locking
differential is for use in mud, rocks, sand,
or any off-road condition where you need
maximum traction.
Note:
The electronic locking differential is
for off-road use only and is not for use on
dry pavement. Using the electronic locking
differential on dry pavement will result in
increased tire wear, noise and vibration.
ELECTRONIC LOCKING
DIFFERENTIAL PRECAUTIONS
Operating the Electronic Locking
Differential with a Spare or
Mismatched Tires
On vehicles with an electronic locking
differential, the size of the spare tire can
affect performance of the system. If there
is a significant difference between the two
rear tires, you may have limited electronic
locking differential functionality. If the
system has difficulty disengaging, release
the accelerator pedal and turn the steering
wheel in the opposite direction when
rolling. We recommend engaging and
disengaging the electronic locking
differential at a stop when you mount a
spare on the rear axle.
SWITCHING THE ELECTRONIC
LOCKING DIFFERENTIAL ON
AND OFF - 4X4
Pull the electronic locking differential
switch towards you to turn on, to turn off
the electronic locking differential push the
knob back into the off position.
E227398
237
Electronic Locking Differential
(If Equipped)
4X4 Rear Electronic Locking Differential Engagement Speed
Automatic Re-
Engagement Speed
Automatic Disen-
gagement Speed
Maximum Engage-
ment Speed
4WD Mode
20 mph (32 km/h)
25 mph (41 km/h)
20 mph (32 km/h)
Two-Wheel Drive
High (2H)
20 mph (32 km/h)
25 mph (41 km/h)
20 mph (32 km/h)
Four-Wheel Drive
High (4H)
55 mph (90 km/h)
62 mph (100 km/h)
55 mph (90 km/h)
Four-Wheel Drive
Low (4L)
Note:
The electronic locking differential
may not engage if you press your accelerator
pedal during an engagement attempt. A
message could display in the instrument
display guiding you to release the
accelerator pedal.
Note:
If the electronic locking differential
has difficulty disengaging, release the
accelerator pedal and turn the steering
wheel in the opposite direction while rolling.
Note:
The electronic locking differential is
for off-road use only and is not for use on
dry pavement. Using the electronic locking
differential on dry pavement results in
increased tire wear, noise and vibration.
SWITCHING THE ELECTRONIC
LOCKING DIFFERENTIAL ON
AND OFF - 4X2
Rotate the electronic locking differential
switch to the on position, to turn off the
electronic locking differential turn to the
off position.
E183740
4X2 Rear Electronic Locking Differential Engagement Speed and Availability
Automatic Re-Engagement
Speed
Automatic Disengagement
Speed
Maximum Engagement
Speed
20 mph (32 km/h)
25 mph (41 km/h)
20 mph (30 km/h)
238
Electronic Locking Differential
(If Equipped)
Note:
The electronic locking differential
may not engage if you press your accelerator
pedal during an engagement attempt. A
message could display in the instrument
display guiding you to release the
accelerator pedal.
Note:
If the electronic locking differential
has difficulty disengaging, release the
accelerator pedal and turn the steering
wheel in the opposite direction while rolling.
Note:
The electronic locking differential is
for off-road use only and is not for use on
dry pavement. Using the electronic locking
differential on dry pavement results in
increased tire wear, noise and vibration.
ELECTRONIC LOCKING
DIFFERENTIAL INDICATORS
E325779
Once the indicator light
illuminates in the information
display, both rear wheel axle
shafts lock 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 a
message in the information display
appears. See your authorized dealer
for assistance.
•
The vehicle is experiencing an anti-lock
brake activation.
If you select the electronic locking
differential, but it malfunctions a message
appears in the information display. See
your authorized dealer for assistance.
Note:
If the vehicle is experiencing an
anti-lock braking event, the electronic
locking differential may momentarily
disengage.
ELECTRONIC LOCKING DIFFERENTIAL – TROUBLESHOOTING
ELECTRONIC LOCKING DIFFERENTIAL – INFORMATION MESSAGES
Description and Action
Message
An electronic locking differential system fault is present.
Contact an authorized dealer as soon as possible.
Check Locking Differen-
tial
You select the electronic locking differential and need to slow
to a required speed.
To Engage Locking
Differential Slow to XX
mph/km/h
Release the accelerator pedal in order to engage.
To Engage Locking
Differential Release
Accelerator Pedal
239
Electronic Locking Differential
(If Equipped)
BRAKE PRECAUTIONS
WARNING:
Driving your vehicle
with the warning lamp on is dangerous.
A significant decrease in braking
performance may occur. It may take you
longer to stop your vehicle. Have your
vehicle checked as soon as possible.
Driving extended distances with the
parking brake engaged can cause brake
failure and the risk of personal injury.
Wet brakes result in reduced braking
efficiency. Gently press the brake pedal a
few times when driving from a car wash or
standing water to dry the brakes.
ANTI-LOCK BRAKING SYSTEM
ANTI-LOCK BRAKING SYSTEM
LIMITATIONS
The anti-lock braking system does not
eliminate the risk of crash when:
•
You drive too closely to the vehicle in
front of you.
•
Your vehicle is hydroplaning.
•
You take corners too fast.
•
The road surface is poor.
Note:
If the system activates, the brake
pedal could pulse and could travel further.
Maintain pressure on the brake pedal.
BRAKE OVER ACCELERATOR
In the event the accelerator pedal
becomes stuck or entrapped, apply steady
and firm pressure to the brake pedal to
slow the vehicle and reduce engine power.
If you experience this condition, apply the
brakes and bring your vehicle to a safe
stop. Move the transmission to park (P),
switch the engine off and apply the parking
brake. Inspect the accelerator pedal for
any interference. If none are found and the
condition persists, have your vehicle towed
to the nearest authorized dealer.
LOCATING THE BRAKE FLUID
RESERVOIR
CHECKING THE BRAKE FLUID
WARNING:
Do not use any fluid
other than the recommended brake fluid
as this will reduce brake efficiency. Use
of incorrect fluid could result in the loss
of vehicle control, serious personal injury
or death.
WARNING:
Only use brake fluid
from a sealed container. Contamination
with dirt, water, petroleum products or
other materials may result in brake
system damage or failure. Failure to
adhere to this warning could result in the
loss of vehicle control, serious personal
injury or death.
WARNING:
Do not allow the fluid
to touch your skin or eyes. If this
happens, rinse the affected areas
immediately with plenty of water and
contact your physician.
WARNING:
The brake system
could be affected if the brake fluid level
is below the
MIN
mark or above the
MAX
mark on the brake fluid reservoir.
240
Brakes
E170684
1.
Park your vehicle on a level surface.
2. Look at the brake fluid reservoir to see
where the brake fluid level is relative
to the
MIN
and the
MAX
marks on the
reservoir.
Note:
To avoid fluid contamination, the
reservoir cap must remain in place and fully
tight, unless you are adding fluid.
Only use fluid that meets our
specifications. See
BRAKE FLUID SPECIFICATION
BRAKES –
TROUBLESHOOTING
BRAKES – WARNING LAMPS
If the ABS indicator illuminates
when you are driving, this
indicates a malfunction. Your
vehicle continues to have normal braking
without the anti-lock braking system
function. See an authorized dealer.
It also momentarily illuminates when you
switch the ignition on to confirm the lamp
is functional. If it does not illuminate when
you switch the ignition on, or begins to
flash at any time, have the system checked
by an authorized dealer.
E270480
The brake indicator momentarily
illuminates when you switch the
ignition on to confirm the lamp
is functional. It may also illuminate when
you apply the parking brake and the
ignition is on. If it illuminates when your
vehicle is moving, make sure the parking
brake is disengaged. If the parking brake
is disengaged, this indicates low brake fluid
level or a brake system fault. See an
authorized dealer.
BRAKES – FREQUENTLY ASKED
QUESTIONS
Is it normal for my brakes to make
noise?
Occasional brake noise is normal. If a
metal-to-metal, continuous grinding,
or continuous squeal sound is present,
the brake lining could be worn-out.
Have the system checked by an
authorized dealer.
241
Brakes
There is an electrical motor sound
when I press on the brake pedal or
activate the park brake switch. Is this
normal?
Yes, those sounds are the electronic
brake booster or the electronic park
brake operating.
Note:
Brake dust could accumulate on the
wheels, even under normal driving
conditions. Some dust is inevitable as the
brakes wear and does not contribute to
brake noise. See
242
Brakes
APPLYING THE PARKING
BRAKE
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.
Apply the parking brake whenever you park
your vehicle. Press the pedal downward to
set the parking brake. The brake warning
lamp in the instrument cluster will
illuminate and remains illuminated until
you release the parking brake.
If you are parking your vehicle on a grade
or with a trailer, press and hold the brake
pedal down, then set the parking brake.
There may be a little vehicle movement as
the parking brake sets to hold the vehicle's
weight. This is normal and should be no
reason for concern. If needed, press and
hold the service brake pedal down, then
try reapplying the parking brake. Chock the
wheels if required. If the parking brake
cannot hold the weight of the vehicle, the
parking brake may need service or the
vehicle may be overloaded.
RELEASING THE PARKING
BRAKE
To release, pull the brake release lever
located at the lower left side of the
instrument panel.
PARKING BRAKE – TROUBLESHOOTING
PARKING BRAKE – INFORMATION MESSAGES
Action
Message
The system has detected a fault, contact an authorized dealer
as soon as possible.
Check Brake System
The brake fluid level is low, inspect the brake system immedi-
ately.
Brake Fluid Level Low
You have set the parking brake and you have driven the vehicle
more than 3.1 mph (5 km/h). If the warning stays on after you
have released the parking brake, contact an authorized dealer.
Park Brake Engaged
243
Parking Brake
DIESEL ENGINE EXHAUST
BRAKE – PRECAUTIONS
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:
Do not use diesel
engine exhaust braking when the road
surface is slippery. Failure to follow this
instruction could result in the loss of
control of your vehicle.
USING THE DIESEL ENGINE
EXHAUST BRAKE
This feature increases engine braking at
higher engine speeds to provide better
grade descent control with less brake and
transmission wear and tear.
Note:
Use this when driving downhill and
carrying heavy loads or trailering.
Benefits of engine braking are:
•
Lower brake temperature.
•
Reduced brake fade.
•
Longer brake life.
•
Improved driving and trailering control.
E171217
Press the button on the switch
bank next to the audio unit to
switch the system on or off.
There are two engine brake modes, manual
and automatic.
Braking conditions must be met to use
exhaust brake:
•
Your vehicle is in a forward gear.
•
The engine speed is above 1500 RPM.
•
Your foot is off the accelerator.
You can use this feature with tow/haul, or
progressive range selection to provide
further increased engine braking. The
transmission upshifts to prevent the engine
from entering the red zone on the
tachometer.
Manual Engine Braking
1.
Press the button to switch on manual
engine braking.
2. Release the accelerator pedal to
maximize engine braking.
3. Apply the brakes. The transmission
downshifts to lower gears.
Note:
The engine braking feature only
functions when you release the accelerator.
Note:
You can shift the transmission to
lower gears with progressive range selection
(PRS) or manual shifting independent of
pressing the brakes.
Note:
You can also use manual engine
braking with cruise control to improve grade
descent control.
Note:
If your vehicle has Adaptive Cruise
Control, the speed control system uses the
selected engine brake mode, transmission
gears, and brakes to maintain the set speed
and distance to the vehicle being followed.
Automatic Engine Braking
1.
Press the button twice to switch on
automatic engine braking.
2. Release the accelerator or brake pedal.
The system remembers your vehicle
speed.
244
Diesel Engine Exhaust Brake
(If Equipped)
Note:
This feature offers smoother, less
aggressive engine braking during downhill
descents. It may not apply braking if the
vehicle speed is not increasing, although it
will apply full engine braking force when
needed to prevent acceleration. The system
automatically activates the engine brake
and, if necessary, downshifts the
transmission to lower gears to not exceed
your vehicle's set speed when the brake or
accelerator were last released.
DIESEL ENGINE EXHAUST
BRAKE INDICATORS
E171217
DIESEL ENGINE EXHAUST
BRAKE – TROUBLESHOOTING
DIESEL ENGINE EXHAUST BRAKE
– WARNING LAMPS
•
Illuminates when this feature is
switched on and the system is
operating properly.
•
Flashes when the engine brake is
disabled due to a fault or the engine
does not meet the required braking
conditions.
•
Does not iluminate when the switch or
indicator is faulty.
You can switch the system on at any time.
The braking system becomes active once
the braking conditions are met.
245
Diesel Engine Exhaust Brake
(If Equipped)
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