2003 FORD SUPER DUTY service indicator

Check air suspension
(if equipped):Illuminates when
the air suspension switch is turned
OFF, the load limit is exceeded or
the air suspension requires servicing.
Low fuel:Illuminates when the fuel
level in the fuel tank is at, or near
empty(refer toFuel gaugein this
chapter).
Speed control:Illuminates when
the speed control is activated. Turns
off when the speed control system
is deactivated.
Transmission Tow/Haul Feature
(if equipped):The ON light on the
end of the gearshift lever illuminates
when the Tow/Haul feature has been
selected. Refer to theDriving
chapter for transmission function and operation. If the light flashes
steadily, have the sy stem serviced immediately, damage to the
transmission could occur.
Transmission control indicator
light (TCIL) (if equipped):
Illuminates when the overdrive
function of the transmission has
been turned off, refer to the
Drivingchapter. If the light flashes steadily, have the sy stem serviced
immediately, damage to the transmission could occur.
Four wheel drive low
(if equipped):Illuminates when
four-wheel drive low is engaged.
Four wheel drive indicator
(if equipped):Illuminates when
four-wheel drive is engaged.CHECK
SUSP
OVERDRIVE
LOW
RANGE
4x4
Instrument Cluster
12

5. Locate and carefullyremove the
engine oil level indicator (dipstick).
6. Wipe the indicator clean. Insert the indicator fully, then remove it
again.
•If the oil level isbetween the MIN and MAX marks,the oil level is
acceptable.DO NOT ADD OIL.
•If the oil level is below the MIN
mark, add enough oil to raise the
level within the MIN-MAX range.
•Oil levels above the MAX mark maycause engine damage. Some oil
must be removed from the engine bya service technician.
7. Put the indicator back in and ensure it is fullyseated.
Adding engine oil
1. Check the engine oil. For instructions, refer toChecking the engine
oilin this chapter.
2. If the engine oil level is not within the normal range, add onlycertified
engine oil of the recommended viscosity. Remove the engine oil filler cap
and use a funnel to pour the engine oil into the opening.
Maintenance and Specifications
195

BATTERY
Your vehicle is equipped with a
Motorcraft maintenance-free battery
which normallydoes not require
additional water during its life of
service.
However, for severe usage or in high temperature climates, check the
batteryelectrolyte level. Refer to the scheduled maintenance guide for
the service interval schedules.
Keep the electrolyte level in each cell up to the “level indicator”.
Do not overfill the battery cells.
If the electrolyte level in the battery is low, you can add plain tap water
to the battery, as long as y ou do not use hard water (water with a high
mineral or alkali content). If possible, however, tryto onlyfill the battery
cells with distilled water. If the batteryneeds water often, have the
charging system checked.
If your battery has a cover/shield, make sure it is reinstalled
after the battery has been cleaned or replaced.
For longer, trouble-free operation, keep the top of the batteryclean and
dry. Also, make certain the batterycables are always tightlyfastened to
the batteryterminals.
If you see any corrosion on the battery or terminals, remove the cables
from the terminals and clean with a wire brush. You can neutralize the
acid with a solution of baking soda and water.
When the batteryis disconnected or a new batteryinstalled, the
transmission must learn its adaptive strategy. As a result of this, the
transmission mayshift firmly. This operation is considered normal and
will fullyupdate transmission operation to its optimum shift feel.
Batteries normallyproduce explosive gases which can cause
personal injury. Therefore, do not allow flames, sparks or lighted
substances to come near the battery. When working near the battery,
always shield your face and protect your eyes. Always provide proper
ventilation.
Maintenance and Specifications
197

•Decreased engine coolant concentrations below 40% will
decrease the corrosion protection characteristics of the engine
coolant and may cause engine damage.
•Decreased engine coolant concentrations below 40% will
decrease the freeze protection characteristics of the engine
coolant and may cause engine damage.
•Refer to the chart on the coolant container to ensure the
coolant concentration in your vehicle will provide adequate
protection at the temperatures in which you drive.
Vehicles driven year-round in non-extreme climates should use a 50/50
mixture of engine coolant and distilled water for optimum cooling system
and engine protection.
What you should know about fail-safe cooling (if equipped)
If the engine coolant supplyis depleted, this feature allows the vehicle to
be driven temporarilybefore incremental component damage is incurred.
The “fail-safe” distance depends on ambient temperatures, vehicle load
and terrain.
How fail-safe cooling works
If the engine begins to overheat:
•The engine coolant temperature
gauge will move to the red (hot)
area.
•The
andsymbol will
illuminate.
•TheService Engine Soon
indicator light will illuminate.
If the engine reaches a preset
over-temperature condition, the engine will automaticallyswitch to
alternating cylinder operation. Each disabled cylinder acts as an air
pump and cools the engine.
When this occurs the vehicle will still operate. However:
•The engine power will be limited.
•The air conditioning system will be disabled.
Continued operation will increase the engine temperature and the engine
will completelyshut down, causing steering and braking effort to
increase.
Maintenance and Specifications
204

When refueling always shut the engine off and never allow
sparks or open flames near the filler neck. Never smoke while
refueling. Fuel vapor is extremelyhazardous under certain conditions.
Care should be taken to avoid inhaling excess fumes.
The flow of fuel through a fuel pump nozzle can produce static
electricity, which can cause a fire if fuel is pumped into an
ungrounded fuel container.
Use the following guidelines to avoid static build-up when filling an
ungrounded fuel container:
•Place approved fuel container on the ground.
•DO NOT fill a fuel container while it is in the vehicle (including the
cargo area).
•Keep the fuel pump nozzle in contact with the fuel container while
filling.
•DO NOT use a device that would hold the fuel pump handle in the fill
position.
Fuel Filler Cap
Your fuel tank filler cap has an indexed design with a 1/8 turn on/off
feature.
When fueling your vehicle:
1. Turn the engine off.
2. Carefullyturn the filler cap counterclockwise 1/8 of a turn until it
stops.
3. Pull to remove the cap from the fuel filler pipe.
4. To install the cap, align the tabs on the cap with the notches on the
filler pipe.
5. Turn the filler cap clockwise 1/8 of a turn until it stops.
If the “Service Engine Soon/Check Engine” indicator comes on and stays
on after you start the engine, the fuel filler cap may not be properly
installed. Turn off the engine, remove the fuel filler cap, align the cap
properlyand reinstall it.
If you must replace the fuel filler cap, replace it with a fuel filler
cap that is designed for your vehicle. The customer warranty may
Maintenance and Specifications
207

in the United States) because it maycause these problems to become
more pronounced. If the problems persist, see your dealer or a qualified
service technician.
It should not be necessaryto add anyaftermarket products to your fuel
tank if you continue to use high quality fuel of the recommended octane
rating. Aftermarket products could cause damage to the fuel system.
Repairs to correct the effects of using an aftermarket product in your
fuel maynot be covered byyour warranty.
Manyof the world’s automakers
issued the World-wide Fuel Charter
that recommends gasoline
specifications to provide improved
performance and emission control
system protection for your vehicle.
Gasolines that meet the World-wide
Fuel Charter should be used when
available. Ask your fuel supplier
about gasolines that meet the
World-wide Fuel Charter. In Canada,
look for fuels that displaytheAuto Makers’ Choicelogo.
Cleaner air
Ford endorses the use of reformulated “cleaner-burning” gasolines to
improve air quality.
Running out of fuel
Avoid running out of fuel because this situation mayhave an adverse
affect on powertrain components.
If you have run out of fuel:
•You mayneed to cycle the ignition from OFF to ON several times after
refueling, to allow the fuel system to pump the fuel from the tank to
the engine.
•Your “Service Engine Soon” indicator maycome on. For more
information on the “Service Engine Soon” indicator, refer to the
Instrument clusterchapter.
Fuel Filter
For fuel filter replacement, see your dealer or a qualified service
technician. Refer to the scheduled maintenance guide for the appropriate
intervals for changing the fuel filter.
Maintenance and Specifications
209