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Function Number of
bulbsTrade number
Headlamps (aerodynamic) 2 9007
Headlamps (sealed beam) 2 H6054
Park/turn 2 3157
Sidemarker 2 194
Tail/stop/turn/sidemarker 2 3157 K
Backup 2 3156K
High-mount stoplamp 1 921
Foglamp 2 899
License plate lamp 2 168
Cargo lamp 2 906
Roofmarker 5 194
Rear fender clearance* 4
(a)
Interior visor lamp (if equipped) 4 194
Rear identification 3 194
All replacement bulbs are clear in color except where noted.
To replace all instrument panel lights - see your dealer
(a)Replace entire lamp assembly; bulb is not serviceable.
* Dual rear wheels or if equipped.
Replacing headlamp bulbs (aerodynamic)
1. Make sure that the headlamp control is in the OFF position open the
hood.
2. Disconnect the electrical connector from the bulb by pulling rearward.
3. Remove bulb retainer ring by
turning it counterclockwise, then
slide the ring off the plastic base
4. Pull bulb out of headlamp
assembly.
2003 F250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA English(fus)
Lights
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Handle a halogen headlamp bulb carefully and keep out of
children’s reach. Grasp the bulb only by its plastic base and do
not touch the glass. The oil from your hand could cause the bulb to
break the next time the headlamps are operated.
Install the new bulb(s) in reverse order.
Replacing headlamp bulbs (sealed beam)
1. Make sure headlamp switch is in OFF position and open the hood.
2. Remove the two screws and
parking lamp/side marker assembly
by pulling gently
3. Disconnect the electrical
connectors from the parking
lamp/side marker assembly and
remove.
4. Remove the four bolts and
headlamp bezel.
5. Remove the four screws and the
headlamp retaining ring from
headlamp.
6. Disconnect the electrical
connector and remove headlamp.
Install the new bulb(s) in reverse order.
2003 F250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA English(fus)
Lights
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Replacing front parking/turn signal bulbs
1. Make sure headlamp switch is in OFF position and open the hood.
2. Remove the two screws and
carefully disengage parking
lamp/turn signal assembly from the
vehicle.
3. Rotate bulb socket
counterclockwise and remove from
lamp assembly.
4. Carefully pull bulb straight out of
the socket and push in the new
bulb.
Install the new bulb(s) in reverse order.
Replacing tail lamp/turn/backup lamp bulbs — F250/F350 only
1. Make sure the headlamp switch is
in the OFF position and then open
the tailgate to expose the lamp
assemblies.
2. Remove the two bolts from the
tail lamp assembly and carefully pull
the lamp assembly from the tailgate
pillar by releasing the two retaining
tabs.
2003 F250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA English(fus)
Lights
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•Manual transmission:
1. Set the parking brake, depress the clutch and place the gearshift in N
(Neutral).
2. Block the wheels.
Note:Do not start your engine with the air cleaner removed and do not
remove it while the engine is running.
OPENING THE HOOD
1. Inside the vehicle, pull the hood
release handle located under the
bottom left corner of the instrument
panel.
2. Go to the front of the vehicle and
release the auxiliary latch located
under the right center of the hood.
Slide the handle to release the
auxiliary latch.
3. Lift the hood until the lift
cylinders hold it open.
HOOD
2003 F250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA English(fus)
Maintenance and Specifications
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Page 218 of 280

WINDSHIELD WASHER FLUID
Add fluid to fill the reservoir if the
level is low. In very cold weather, do
not fill the reservoir completely.
Only use a washer fluid that meets
Ford specification WSB-M8B16–A2.
Refer toLubricant specifications
in this chapter.
State or local regulations on volatile organic compounds may restrict the
use of methanol, a common windshield washer antifreeze additive.
Washer fluids containing non-methanol antifreeze agents should be used
only if they provide cold weather protection without damaging the
vehicle’s paint finish, wiper blades or washer system.
If you operate your vehicle in temperatures below 4.5°C (40°
F), use washer fluid with antifreeze protection. Failure to use
washer fluid with antifreeze protection in cold weather could result in
impaired windshield vision and increase the risk of injury or accident.
Note:Do not put washer fluid in the engine coolant reservoir. Washer
fluid placed in the cooling system may harm engine and cooling system
components.
ENGINE OIL
Checking the engine oil
Refer to the scheduled maintenance guide for the appropriate intervals
for checking the engine oil.
1. Make sure the vehicle is on level ground.
2. Turn the engine off and wait a few minutes for the oil to drain into the
oil pan.
3. Set the parking brake and ensure the gearshift is securely latched in P
(Park) (automatic transmission) or 1 (First) (manual transmission).
4. Open the hood. Protect yourself from engine heat.
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Owners Guide (post-2002-fmt)
USA English(fus)
Maintenance and Specifications
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filter, specifications ........220, 253
recommendations ...................220
refill capacities ........................254
specifications ..................257, 260
Exhaust fumes ..........................114
F
Fail safe cooling ........................227
Fluid capacities .........................254
Foglamps .....................................39
Four-Wheel Drive vehicles .......129
description ..............................133
driving off road .......................135
electronic shift ................129, 133
indicator light .........................130
lever operated shift ................130
manual locking hubs ..............129
preparing to drive your
vehicle .....................................117
Fuel ............................................229
calculating fuel economy .......233
cap ...........................................231
capacity ...................................254
choosing the right fuel ...........231
comparisons with EPA fuel
economy estimates .................236
detergent in fuel .....................232
filling your vehicle
with fuel ..................229, 231, 233
filter, specifications ........233, 253
fuel pump shut-off switch .....175
improving fuel economy ........233
octane rating ...................232, 260
quality ......................................232
running out of fuel .................232
safety information relating to
automotive fuels .....................229
Fuel pump shut-off switch .......175
Fuses ..................................176–177G
Garage door opener ....................50
Gas cap (see Fuel cap) ............231
Gas mileage
(see Fuel economy) .................233
Gauges .........................................15
transmission fluid
temperature gauge ...................19
GAWR
(Gross Axle Weight Rating) .....145
calculating ...............................146
definition .................................145
driving with a heavy load ......145
location ....................................145
GVWR (Gross Vehicle Weight
Rating) .......................................145
calculating .......................145–146
definition .................................145
driving with a heavy load ......145
location ....................................145
H
Hazard flashers .........................175
Headlamps ...................................38
aiming ........................................40
autolamp system .......................38
daytime running lights .............39
flash to pass ..............................40
high beam .................................39
replacing bulbs ...................43–44
turning on and off ....................38
Heating
heating and air conditioning
system .................................35–36
Hood ..........................................216
I
Ignition ...............................110, 260
2003 F250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA English(fus)
Index
276