
When lifting a plastic-cased battery, excessive pressure on the
end walls could cause acid to flow through the vent caps,
resulting in personal injury and/or damage to the vehicle or battery.
Lift the battery with a battery carrier or with your hands on opposite
corners.
Keep batteries out of reach of children. Batteries contain sulfuric
acid. Avoid contact with skin, eyes or clothing. Shield your eyes
when working near the battery to protect against possible splashing of
acid solution. In case of acid contact with skin or eyes, flush
immediately with water for a minimum of 15 minutes and get prompt
medical attention. If acid is swallowed, call a physician immediately.
Battery posts, terminals and related accessories contain lead and
lead compounds.Wash hands after handling.
For information on transmission operation after the battery has been
disconnected see“Shift strategy”in the driving section.
Because your vehicle’s engine is also electronically controlled by a
computer, some control conditions are maintained by power from the
battery. When the battery is disconnected or a new battery is installed,
the engine must relearn its idle and fuel trim strategy for optimum
driveability and performance. To begin this process:
1. With the vehicle at a complete stop, set the parking brake.
2. Put the gearshift in P (Park) (automatic transmission) or the neutral
position (manual transmission), turn off all accessories and start the
engine.
3. Run the engine until it reaches normal operating temperature.
4. Allow the engine to idle for at least one minute.
5. Turn the A/C on and allow the engine to idle for at least one minute.
6. Drive the vehicle to complete the relearning process.
•The vehicle may need to be driven 16 km (10 miles) or more to
relearn the idle and fuel trim strategy.
•If you do not allow the engine to relearn its idle trim, the idle
quality of your vehicle may be adversely affected until the idle
trim is eventually relearned.
If the battery has been disconnected or a new battery has been installed,
the clock and the preset radio stations must be reset once the battery is
reconnected.
2004 F250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA English(fus)
Maintenance and Specifications
239

1. Before you begin, turn the engine off and let it cool.
2. When the engine is cool, wrap a thick cloth around the coolant
pressure relief cap on the coolant reservoir (a translucent plastic bottle).
Slowly turn cap counterclockwise (left) until pressure begins to release.
3. Step back while the pressure releases.
4. When you are sure that all the pressure has been released, use the
cloth to turn it counterclockwise and remove the cap.
5. Fill the coolant reservoir slowly with the proper coolant mixture (see
above), to within the“cold fill range”or the“cold full”level on the
reservoir. If you removed the radiator cap in an overflow system, fill the
radiator until the coolant is visible and radiator is almost full.
6. Replace the cap. Turn until tightly installed. (Cap must be tightly
installed to prevent coolant loss.)
After any coolant has been added, check the coolant concentration, refer
toChecking Engine Coolantsection. If the concentration is not 50/50
(protection to–34°F/–36°C), drain some coolant and adjust the
concentration. It may take several drains and additions to obtain a 50/50
coolant concentration.
Whenever coolant has been added, the coolant level in the coolant
reservoir should be checked the next few times you drive the vehicle. If
necessary, add enough 50/50 concentration of engine coolant and
distilled water to bring the liquid level to the proper level.
If you have to add more than 1.0 liter (1.0 quart) of engine coolant per
month, have your dealer check the engine cooling system. Your cooling
system may have a leak. Operating an engine with a low level of coolant
can result in engine overheating and possible engine damage.
Recycled engine coolant
Ford Motor Company does NOT recommend the use of recycled engine
coolant in vehicles originally equipped with Motorcraft Premium Gold
Engine Coolant since a Ford-approved recycling process is not yet
available.
Used engine coolant should be disposed of in an appropriate
manner. Follow your community’s regulations and standards for recycling
and disposing of automotive fluids.
Coolant refill capacity
To find out how much fluid your vehicle’s cooling system can hold, refer
toRefill capacitiesin this chapter.
2004 F250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA English(fus)
Maintenance and Specifications
243

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. Carefully turn 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
properly and 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
be void for any damage to the fuel tank or fuel system if the
correct genuine Ford or Motorcraft fuel filler cap is not used.
The fuel system may be under pressure. If the fuel filler cap is
venting vapor or if you hear a hissing sound, wait until it stops
before completely removing the fuel filler cap. Otherwise, fuel may
spray out and injure you or others.
If you do not use the proper fuel filler cap, excessive pressure or
vacuum in the fuel tank may damage the fuel system or cause
the fuel cap to disengage in a collision, which may result in possible
personal injury.
Choosing the right fuel
Use only UNLEADED FUEL. The use of leaded fuel is prohibited by law
and could damage your vehicle.
Do not use fuel containing methanol. It can damage critical fuel system
components.
Your vehicle was not designed to use fuel or fuel additives with metallic
compounds, including manganese-based additives.
2004 F250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA English(fus)
Maintenance and Specifications
248

waxing .....................................225
wheels ......................................226
wiper blades ............................227
Clock ............................................33
Clock adjust
AM/FM .................................21, 23
AM/FM Stereo ...........................23
AM/FM/CD ...........................26, 33
AM/FM/Tape/CD .......................30
Clutch
fluid ..........................................257
operation while driving ..........138
recommended shift speeds ....139
Compass, electronic ....................69
calibration .................................71
set zone adjustment .................70
Console ........................................67
overhead ....................................52
Coolant
checking and adding ..............240
refill capacities ................243, 278
specifications ..................281, 284
Cruise control
(see Speed control) ....................59
Customer Assistance ................191
Ford accessories for your
vehicle .....................................230
Ford Extended Service
Plan ..........................................218
Getting assistance outside the
U.S. and Canada .....................222
Getting roadside assistance ...191
Getting the service you
need .........................................216
Ordering additional owner’s
literature .................................223
The Dispute Settlement
Board .......................................218Utilizing the
Mediation/Arbitration
Program ...................................221
D
Daytime running lamps
(see Lamps) ................................41
Dipstick
automatic transmission
fluid ..........................................258
engine oil .................................235
Doors
lubricant specifications ..........281
Driveline universal joint and
slip yoke ....................................262
Driving under special
conditions ..................138, 151, 154
sand .........................................153
snow and ice ...........................155
through water .................153, 158
E
Emergencies, roadside
jump-starting ..........................209
Emergency Flashers .................192
Emission control system ..........253
Engine ........................................284
cleaning ...................................226
coolant .....................................240
diesel ...........................................7
fail-safe coolant ......................244
idle speed control ...................238
lubrication
specifications ..................281, 284
refill capacities ........................278
service points ..........................234
starting after a collision .........192
Engine block heater .................128
Engine oil ..................................235
checking and adding ..............235
dipstick ....................................235
filter, specifications ........237, 277
2004 F250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA English(fus)
Index
300

Power door locks ..................73, 79
Power point .................................55
Power steering ..........................130
fluid, checking and adding ....256
fluid, refill capacity ................278
fluid, specifications .........281, 284
Power Windows ...........................55
Preparing to drive your
vehicle ........................................131
R
Radio ....................19, 21, 23, 26, 30
Relays ........................................193
Remote entry system .................75
illuminated entry ......................78
locking/unlocking doors ...........73
Reverse sensing system ...........141
Roadside assistance ..................191
S
Safety Belt Maintenance ..........103
Safety belts
(see Safety restraints) ...91–95, 97
Safety defects, reporting ..........224
Safety restraints ....................91–97
belt minder ...............................99
extension assembly ................103
for adults .............................92–95
for children .............................113
lap belt ......................................98
safety belt maintenance .........103
warning light and chime ..........99
Safety seats for children ..........116
Seat belts
(see Safety restraints) ...............91
Seats ............................................84child safety seats ....................116
cleaning ...................................229
Servicing your vehicle ..............232
Setting the clock
AM/FM stereo ...........................21
AM/FM/CD .................................26
AM/FM/Tape/CD .......................30
Premium In-dash Six CD .........33
Snowplowing .................8, 187–190
Spare tire
(see Changing the Tire) ...........199
Spark plugs,
specifications .....................277, 284
Special notice ................................9
ambulance conversions ..............8
diesel-powered vehicles .............7
four-wheel drive vehicles .......189
utility-type vehicles ....................7
Specification chart,
lubricants ...........................281, 284
Speed control ..............................59
Starting your
vehicle ........................124–125, 127
jump starting ..........................209
Steering wheel
tilting .........................................51
T
Tailgate ........................................72
Tilt steering wheel ......................51
Tires ...........................................264
changing ..................199, 201, 208
snow tires and chains ............276
tire grades ...............................265
treadwear ................................264
Towing .......................................162
trailer towing ..........................162
wrecker ....................................214
2004 F250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA English(fus)
Index
303