Page 11 of 280
Vehicle Symbol Glossary
Power Windows
Front/Rear
Power Window Lockout
Child Safety Door
Lock/UnlockInterior Luggage
Compartment Release
Symbol
Panic AlarmEngine Oil
Engine CoolantEngine Coolant
Temperature
Do Not Open When HotBattery
Avoid Smoking, Flames,
or SparksBattery Acid
Explosive GasFan Warning
Power Steering FluidMaintain Correct Fluid
LevelMAX
MIN
Emission SystemEngine Air Filter
Passenger Compartment
Air FilterJack
Check fuel capLow tire warning
2003 F250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA English(fus)
Introduction
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Page 67 of 280

Your vehicle is equipped with a remote entry system which allows you to:
•unlock the vehicle doors without
a key.
•lock all the vehicle doors without
a key.
•activate the personal alarm.
If there is any potential remote keyless entry problem with your vehicle,
ensureALL remote entry transmittersare taken to the dealership, to
aid in troubleshooting.
Unlocking the doors
1. Pressand release to unlock the driver’s door.Note:The interior
lamps will illuminate.
2. Press
and release again within three seconds to unlock all the
doors.
Locking the doors
1. Pressand release to lock all the doors. The parking lamps will flash
if all the doors are closed and locked.
2. Press
and release again within three seconds to confirm that all the
doors are closed and locked.Note:The doors will lock again, the horn
will chirp once, and the parking lamps will flash once more.
If any of the doors are not properly closed the horn will make two quick
chirps.
Power door lock disable feature (if equipped)
The UNLOCK
feature on your power door locks will not work from
inside the vehicle when:
•the ignition has been turned to the OFF position, and
•20 seconds elapse after all vehicle doors are closed and locked using
the remote entry transmitter, or the power door lock control (while
the accompanying door is open).
2003 F250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA English(fus)
Locks and Security
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Page 68 of 280

The UNLOCKfeature will work again after:
•a door has become ajar,
•the ignition is turned to the ON position,
•or using the UNLOCK
control on your remote entry transmitter (if
equipped).
This feature is initially deactivated, but may be activated by taking your
vehicle to an authorized Ford dealer.
Sounding a panic alarm
Press
to activate the alarm. Press again or turn the ignition to ACC
or ON to deactivate.
Note:The panic alarm will only operate when the ignition is in the OFF
position.
Replacing the battery
The remote entry transmitter uses one coin type three-volt lithium
battery CR2032 or equivalent. The typical operating range for your
remote entry transmitter is approximately 10 meters (33 feet). A
decrease in the operating range could be caused by:
•weather conditions,
•nearby radio towers,
•structures around the vehicle and
•other vehicles parked next to the vehicle.
To replace the battery:
1. Twist a thin coin between the two
halves of the remote entry
transmitter near the key ring. DO
NOT TAKE THE RUBBER COVER
AND CIRCUIT BOARD OFF THE
FRONT HOUSING OF THE
REMOTE ENTRY TRANSMITTER.
2003 F250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA English(fus)
Locks and Security
68
Page 128 of 280

The RSS detects obstacles up to 2
meters (6 ft.) from the rear bumper
with a decreased coverage area at
the outer corners of the bumper,
(refer to the figures for approximate
zone coverage areas). As you move
closer to the obstacle, the rate of
the tone increases. When the
obstacle is less than 25.0 cm (10
in.) away, the tone will sound
continuously. If the RSS detects a
stationary or receding object further
than 25.0 cm (10 in.) from the side
of the vehicle, the tone will sound
for only three seconds. Once the
system detects an object
approaching, the tone will sound
again.
The RSS may have reduced
performance or an increased chance
of false detection if the tailgate is
not locked and in the upright position. If the tailgate is down, the RSS
tone may be heard intermittently or continuously. The tone may also be
heard if items in the truck bed protrude rearward outside the bed.
The RSS automatically turns on
when the gear selector is placed in
R (Reverse) and the ignition is ON.
An RSS control allows the driver to
turn the RSS on and off. To turn the RSS off, the ignition must be ON,
and the gear selector in R (Reverse). An indicator light on the control
will illuminate when the system is turned off. If the indicator light
illuminates when the RSS is not turned off, it may indicate a failure in
the RSS. The RSS will remain off until either the RSS control is pushed
again or the ignition switch is recycled.
Keep the RSS sensors (located on the rear bumper/fascia) free
from snow, ice and large accumulations of dirt (do not clean the
sensors with sharp objects). If the sensors are covered, it will
affect the accuracy of the RSS.
If your vehicle sustains damage to the rear bumper/fascia, leaving
it misaligned or bent, the sensing zone may be altered causing
inaccurate measurement of obstacles or false alarms.
2003 F250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA English(fus)
Driving
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Page 273 of 280

Wood trim - interim applique
For maximum vehicle performance, keep the following information in
mind when adding accessories or equipment to your vehicle:
•When adding accessories, equipment, passengers and luggage to your
vehicle, do not exceed the total weight capacity of the vehicle or of
the front or rear axle (GVWR or GAWR as indicated on the Safety
compliance certification label). Consult your dealer for specific weight
information.
•The Federal Communications Commission (FCC) and Canadian Radio
Telecommunications Commission (CRTC) regulate the use of mobile
communications systems - such as two-way radios, telephones and
theft alarms - that are equipped with radio transmitters. Any such
equipment installed in your vehicle should comply with FCC or CRTC
regulations and should be installed only by a qualified service
technician.
•Mobile communications systems may harm the operation of your
vehicle, particularly if they are not properly designed for automotive
use or are not properly installed. When operated, such systems may
cause the engine to stumble or stall or cause the transmission to be
damaged or operate improperly. In addition, such systems may be
damaged or their performance may be affected by operating your
vehicle. (Citizens band [CB] transceivers, garage door openers and
other transmitters with outputs of five watts or less will not ordinarily
affect your vehicle’s operation.)
•Ford cannot assume responsibility for any adverse effects or damage
that may result from the use of such equipment.
Vehicles with a higher center of gravity such as utility and
four-wheel drive vehicles handle differently than vehicles with a
lower center of gravity. Utility and four-wheel drive vehicles arenot
designed for cornering at speeds as high as passenger cars any more
than low-slung sports cars are designed to perform satisfactorily under
off-road conditions. Avoid sharp turns, excessive speed and abrupt
maneuvers in these vehicles. Failure to drive cautiously could result in
an increased risk of loss of vehicle control, vehicle rollover, personal
injury and death.
2003 F250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA English(fus)
Accessories
273