Ford Vehicle Manual page 14

Instrumentation
Water in fuel (if equipped)
During refueling it is possible for
water-contaminated diesel fuel to be
pumped into your fuel tank. Your
vehicle fuel system is equipped with
a fuel filter/water separator to
remove water from the fuel. The indicator light illuminates when the fuel
filter/water separator has a significant quantity of water, or when the
ignition key is switched to the START position. If the light illuminates
when the engine is running, stop the vehicle as soon as safely possible,
shut off the engine and drain the filter bowl. Allowing water to stay in
the system could result in extensive damage to, or failure of, the fuel
injection system.
To drain the fuel filter/water separator (refer to Maintenance and
Specifications chapter for procedure). Rotate the valve at the bottom of
the filter assembly allowing water to drain from the system. Close the
valve upon completion.
Do not drain water separator while engine is running. Fuel may
ignite if separator is drained while engine is running or vehicle is
moving.
Air clean warning (if equipped)
Illuminates when the air system is
restricted (dirty, clogged).
Turn signal
Illuminates when the left or right
turn signal or the hazard lights are
turned on. If one or both of the
indicators stay on continuously or flash faster, check for a burned-out
turn signal bulb. Refer to Exterior bulbs in the Lights chapter.
High beams
Illuminates when the high beam
headlamps are turned on.
14
WATER
IN
FUEL
AIR
CLEAN