Ford F-150 (2018 year). Manual - part 26

Blind Spot Monitor

 (If Equipped)

E151262

It illuminates when you switch
the system off.

See Blind Spot Information

System (page 252).

Brake System Warning Lamp

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.

E138644

It illuminates when you engage
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.  Have your
vehicle checked as soon as possible.

Check 4X4

 (If Equipped)

Illuminates with the message
Check 4x4 when a four-wheel
drive fault is present.  See Using

Four-Wheel Drive (page 208).

Cruise Control Indicator

 (If Equipped)

E71340

It illuminates when you switch
the system on.

See Using Cruise Control

(page 239).

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 Reductant System
(page 191).

Direction Indicator

Illuminates when the left or right
direction indicator or the hazard
warning flasher is turned on.

Flashes during operation.  An increase in
the rate of flashing warns of a failed
indicator bulb.

Door Ajar Warning Lamp

It illuminates when you switch
the ignition on and remains on if
any door or the hood is open.

Electronic Locking Differential

 (If

Equipped)

E163170

Illuminates when using the
electronic locking differential.

Electric Park Brake

 (If Equipped)

E146190

It illuminates or flashes when the
electric parking brake has a
malfunction.  See Electric

Parking Brake (page 219).

Engine Coolant Temperature
Warning Lamp

If it illuminates when your vehicle
is moving, this indicates that the
engine is overheating.  Stop your

vehicle as soon as it is safe to do so and
switch the engine off.  Have your vehicle
checked as soon as possible.

See Engine Coolant Check (page 349).

Fasten Seatbelt Warning Lamp

E71880

It illuminates and a chime
sounds until you fasten the
seatbelts.

Four-Wheel Drive Indicators

 (If

Equipped)

Note: Some indicators will appear different
depending on vehicle options.

E181778

Illuminates momentarily when
you select two-wheel drive high.

E181781

Illuminates when the automatic
four-wheel drive system is
engaged.

E181780

Illuminates when four-wheel
drive low is engaged.

E181779

Illuminates when four-wheel
drive high is engaged.

Front Airbag

E67017

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

a malfunction.  Have the system checked.

Front Fog Lamp Indicator

 (If Equipped)

It illuminates when you switch
the front fog lamps on.

Headlamp High Beam Indicator

It illuminates when you switch
the headlamp high beam on.  It
flashes when you use the

headlamp flasher.

Hill Descent

 (If Equipped)

E163171

Illuminates when hill descent is
switched on.

Low Fuel Level Warning Lamp

If it illuminates when you are
driving, refuel as soon as
possible.

Low Tire Pressure Warning Lamp

It 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.

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.

Low Washer Fluid Level Warning
Lamp

E132353

It illuminates when the washer
fluid is low.

Oil Pressure Warning Lamp

It illuminates when you switch
the ignition on.

If it illuminates when the engine

is running 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.  If the oil level is sufficient,
this indicates a system malfunction.  Have
your vehicle checked as soon as possible.

See Engine Oil Check (page 347).

Parking Lamps

It illuminates when you switch
the parking lamps on.

Powertrain Malfunction/Reduced
Power/Electronic Throttle Control

Illuminates when the system has
detected a powertrain or a
four-wheel drive fault. Contact

an authorized dealer as soon as possible.

Service Engine Soon

If it illuminates when the engine
is running this indicates a
malfunction.  The On Board

Diagnostics system has detected a
malfunction of the vehicle emission control
system.

If it flashes, engine misfire may be
occurring.  Increased exhaust gas
temperatures could damage the catalytic
converter or other vehicle components.
Drive in a moderate fashion (avoid heavy
acceleration and deceleration) and have
your vehicle immediately serviced.

It illuminates when you switch the ignition
on prior to engine start to check the bulb
and to indicate whether your vehicle is
ready for Inspection and Maintenance
(I/M) testing.

Normally, it illuminates until the engine is
cranked and automatically turns off if no
malfunctions are present. However, if after
15 seconds it flashes eight times, this
indicates that your vehicle is not ready for
Inspection and Maintenance (I/M) testing.
See Emission Law (page 188).

Sport Mode

E176099

Illuminates when you switch the
sport mode on.

Stability Control and Traction
Control Indicator

E138639

Flashes during operation.

If it does not illuminate when you
switch the ignition on, or remains

on when the engine is running, this
indicates a malfunction.  Have your vehicle
checked as soon as possible.

See Principle of Operation (page 224).

Stability Control and Traction
Control Off Warning Lamp

E130458

It illuminates when you switch
the system off.

Tow Haul Indicator

 (If Equipped)

E161509

It illuminates when you switch
the system on.

If it illuminates when the engine

is running this indicates a malfunction and
could result in transmission damage not
covered by the vehicle Warranty.  Have
your vehicle checked as soon as possible.

Water In Fuel

 (If Equipped)

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.

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 178).
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.

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.

AUDIBLE WARNINGS AND
INDICATORS

Airbag Secondary Warning

Sounds if there is a malfunction with the
safety belt warning lamp and there is a
fault in the supplemental restraints
system.

Beltminder Warning

Sounds when a seatbelt is unfastened in
an occupied seat and your vehicle is
moving.

Door Ajar Warning

Sounds when any door is not completely
closed and your vehicle speed exceeds
3 mph (5 km/h).

Headlamps On Warning

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

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

Keyless Warning Alert

 (If Equipped)

Sounds the horn twice when you exit your
vehicle with the intelligent access key, after
the last door is closed and your keyless
vehicle is in RUN, indicating your vehicle is
still on.

Rear Park Aid Warning

A detection warning sounds when
obstacles are within a certain range of the
bumper area. The system turns on
automatically whenever you switch the
ignition on.

Parking Brake On Warning

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.

Service AdvanceTrac Warning

Sounds when there is a malfunction with
the Electronic Stability Control (ESC) or
Rollover Stability Control (RSC) system.