Ford 2016 F-150 Owner's Manual page 109

It will also illuminate 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.
Parking Lamps
It will illuminate when you switch
the parking lamps on.
Powertrain Malfunction/Reduced
Power/Electronic Throttle Control
Illuminates when the system has
detected a powertrain or an
all-wheel drive fault. Contact an
authorized dealer as soon as possible.
Service Engine Soon
If the service engine soon
indicator light stays illuminated
after you start the engine, it
indicates that the On Board Diagnostics
system (OBD) has detected a malfunction
of your vehicle emissions control system.
Refer to On board diagnostics (OBD) in
the Fuel and Refueling chapter for more
information about having your vehicle
serviced. See Emission Control System
(page 179).
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.
F-150 (TFC) Canada/United States of America, enUSA, Edition date: 08/2015, First Printing
Instrument Cluster
converter, the fuel system, interior floor
coverings or other vehicle components,
possibly causing a fire. Have an authorized
dealer service your vehicle immediately.
When you first switch the ignition on,
before engine start, the service engine soon
indicator light illuminates to check the bulb
and to indicate whether your vehicle is
ready for inspection maintenance testing.
Normally, the service engine soon light will
stay on until you crank the engine, and 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 your vehicle is not ready for
inspection maintenance testing. See
Emission Control System (page 179).
Sport Mode
E176099
Traction and Stability Control
E138639
switch the ignition on, this indicates a
malfunction. During a malfunction the
system will switch off. Have the system
checked by an authorized dealer
immediately. See Using Stability
Control (page 205).
Traction and Stability Control Off
or when you switch the ignition off. See
Using Stability Control (page 205).
106
WARNING
Under engine misfire conditions,
excessive exhaust temperatures
could damage the catalytic
Illuminates when you switch the
sport mode on.
Illuminates when the system is
active. If it remains illuminated
or does not illuminate when you
Illuminates when you switch the
system off. It will go out when
you switch the system back on