Ford Super Duty (2017 year). Manual — part 26

Cruise Control

(If Equipped)

E71340

Illuminates when you switch this
feature on. See Using Cruise
Control (page 239).

Direction Indicator

Illuminates when the left or right
turn signal or the hazard warning
flasher is turned on. If the

indicators stay on or flash faster, check for
a burned out bulb.

Door Ajar

Displays when the ignition is on
and any door is not completely
closed.

Electronic Locking Differential

(If

Equipped)

E163170

Illuminates when using the
electronic locking differential.

Engine Coolant Temperature

Illuminates when the engine
coolant temperature is high.
Stop the vehicle as soon as

possible, switch off the engine and let cool.

Engine Oil

If it illuminates with the engine
running or when you are driving,
this indicates a malfunction.

Stop your vehicle as soon as it is safe to
do so and switch the engine off. Check the
engine oil level. See Engine Oil Check
(page 324).

Note: Do not resume your journey if it
illuminates despite the level being correct.
Have the system checked by your authorized
dealer immediately.

Fasten Seatbelt

It illuminates and a chime
sounds to remind you to fasten
your seatbelt.

Front Airbag

If it fails to illuminate when you
start your vehicle, continues to
flash or remains on, it indicates

a malfunction. Have the system checked
by your authorized dealer.

Front Fog Lamps

(If Equipped)

It illuminates when you switch
the front fog lamps on.

High Beam

Illuminates when you switch the
high beam headlamps on. It will
flash when you use the

headlamp flasher.

Hill Descent

(If Equipped)

E163171

Illuminates when hill descent is
switched on.

Low Fuel Level

Illuminates when the fuel level
is low or the fuel tank is nearly
empty. Refuel as soon as

possible.

Low Tire Pressure Warning

Illuminates when your tire
pressure is low. If the lamp
remains on with the engine

running or when driving, check your tire
pressure as soon as possible.

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It also illuminates momentarily 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 your authorized dealer.

Powertrain Malfunction/Reduced
Power/Electronic Throttle Control

Illuminates when a powertrain
or an 4WD fault has been
detected. Contact your

authorized dealer as soon as possible.

Service Engine Soon

If the service engine soon
indicator light stays illuminated
after the engine is started, it

indicates that the On-Board Diagnostics
(OBD-II) system has detected a
malfunction of the vehicle emissions
control system. Refer to On-Board
Diagnostics (OBD-II) in the Fuel and
Refueling chapter for more information
about having your vehicle serviced. See
Emission Control System (page 197).

If the light is blinking, engine misfire is
occurring which could damage your
catalytic converter. Drive in a moderate
fashion (avoid heavy acceleration and
deceleration) and have your vehicle
serviced immediately.

WARNING

Under engine misfire conditions,
excessive exhaust temperatures
could damage the catalytic

converter, the fuel system, interior floor
coverings or other vehicle components,
possibly causing a fire. Have your vehicle
checked as soon as possible.

The service engine soon indicator light
illuminates when the ignition is first turned
on prior to engine start to check the bulb
and to indicate whether the vehicle is ready
for Inspection/Maintenance (I/M) testing.

Normally, the service engine soon light will
stay on until the engine is cranked, then
turn itself off if no malfunctions are
present. However, if after 15 seconds the
service engine soon light blinks eight times,
it means that the vehicle is not ready for
I/M testing. See Emission Control
System (page 197).

Stability Control

E138639

Illuminates when the system is
active. If it remains illuminated
or does not illuminate when you

switch the ignition on, this indicates a
malfunction. During a malfunction the
system will switch off. Have the system
checked by your authorized dealer
immediately. See Using Stability
Control (page 227).

Stability Control Off

E130458

Illuminates when you switch the
system off. It will go out when
you switch the system back on

or when you switch the ignition off. See
Using Stability Control (page 227).

Transmission Tow/Haul

(If Equipped)

E161509

Illuminates when the tow/haul
feature has been activated. If the
light flashes steadily, have the

system serviced immediately, damage to
the transmission could occur.

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4X2

(If Equipped)

E163173

Illuminates momentarily when
two-wheel drive high is selected.
If the light fails to display when

the ignition is turned on, or remains on,
have the system serviced immediately by
your authorized dealer.

4X4 LOW

(If Equipped)

E181780

Illuminates when four-wheel
drive low is engaged. If the light
fails to display when the ignition

is turned on, or remains on, have the
system serviced immediately by your
authorized dealer.

4X4 HIGH

(If Equipped)

E181779

Illuminates when four-wheel
drive high is engaged. If the light
fails to display when the ignition

is turned on, or remains on, have the
system serviced immediately by your
authorized dealer.

Diesel Engine Brake

(If Equipped)

E171217

Illuminates when you switch the
manual engine brake on. See
General Information (page

221).

E234452

Illuminates when you switch the
automatic engine brake on. See
General Information (page

221).

Diesel Exhaust Fluid

(If Equipped)

E163176

With the key in the on position,
illuminates when the DEF is
contaminated, low or someone

has tampered with the DEF system. See
Selective Catalytic Reduction System
(page 188).

Wait To Start

(If Equipped)

Illuminates when you switch the
ignition on as part of the
pre-start system. Wait until the

wait to start indicator turns off before
attempting to start vehicle. See Starting
a Diesel Engine (page 176).

Water In Fuel

(If Equipped)

During refueling, it is possible for
you to pump
water-contaminated diesel fuel

into your fuel tank. Your vehicle’s fuel
system is equipped with a fuel filter and
water separator to remove water from the
fuel. The water in fuel indicator lights when
the fuel and water separator has a
significant quantity of water in it and
requires immediate draining.

If the water in fuel indicator illuminates
when the engine is running, stop your
vehicle as soon as safely possible, shut off
the engine, then drain the fuel and water
separator. See Fuel Quality (page 185).
Allowing water to stay in the fuel system,
after the water in fuel indicator illuminates,
could result in extensive damage or failure
of the fuel injection system.

WARNING

Do not drain the water-in-fuel
separator while the engine is running.
Failure to follow this warning may

result in fire, serious injury, death or
property damage.

Note: Do not drain the fuel and water
separator while the engine is running. Air will
enter into the fuel system causing the engine
not to operate properly.

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AUDIBLE WARNINGS AND
INDICATORS

Headlamps On Warning Chime

Sounds when you remove the key from the
ignition and open the driver's door and you
have left the headlamps or parking lamps
on.

Key in Ignition Warning Chime

Sounds when you open the driver's door
and you have left the key in the ignition.

Parking Brake On Warning Chime

Sounds when you have left the parking
brake on and drive your vehicle. If the
warning chime remains on after you have
released the parking brake, have the
system checked by your authorized dealer
immediately.

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