User Manual - Page 111

For 2020 Super Duty F-350 XL.

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During refueling, it is possible for
you to pump
water-contaminated diesel fuel
into your fuel tank. Your vehicles fuel
system is equipped with a fuel filter and
water separator to remove water from the
fuel. The water in fuel indicator illuminates
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 179).
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.
Four-Wheel Drive Indicators (If
Equipped)
4X2 HIGH
E181778
Illuminates momentarily when
two-wheel drive high is engaged.
4X4 HIGH
E181779
Illuminates when four-wheel
drive high is engaged.
4X4 LOW
E181780
Illuminates when four-wheel
drive low is engaged.
AUDIBLE WARNINGS AND
INDICATORS
Key in Ignition Warning Chime
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.
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.
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 an authorized dealer
immediately.
108
Super Duty (TFE), enUSA, Edition date: 201909, Third-Printing-
Instrument Cluster
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