Stability Control Off; Diesel Warning Lights - Ford SUPER DUTY Owner's Manual

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 139).
Stability Control
Illuminates when the system is
active. If it remains illuminated
or does not illuminate when you
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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 165).

Stability Control Off

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 165).
Transmission Tow/Haul
Illuminates when the tow/haul
feature has been activated. If the
light flashes steadily, have the
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system serviced immediately, damage to
the transmission could occur.
Super Duty (TFA)
Instrument Cluster
4X2
the ignition is turned on, or remains on,
have the system serviced immediately by
your authorized dealer.
4X4 LOW
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is turned on, or remains on, have the
system serviced immediately by your
authorized dealer.
4X4 HIGH
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is turned on, or remains on, have the
system serviced immediately by your
authorized dealer.

Diesel Warning Lights

If your vehicle is equipped with a diesel
engine, it has some unique warning lights;
refer to your diesel supplement for detailed
information on their function.
Diesel exhaust fluid
(If Equipped)
Glow plug pre-heat
79
(If Equipped)
Illuminates momentarily when
two-wheel drive high is selected.
If the light fails to display when
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(If Equipped)
Illuminates when four-wheel
drive low is engaged. If the light
fails to display when the ignition
(If Equipped)
Illuminates when four-wheel
drive high is engaged. If the light
fails to display when the ignition
For more information see your
diesel supplement.
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For more information see your
diesel supplement.