2001 FORD EXPEDITION sensor

The reverse sensing system is
automatically enabled when the gear
selector is placed in R (Reverse)
and the ignition is ON. A reverse
sensing control allows the driver to
disable the reverse sensing system only when the ignition is ON, and the
gear selector is in R (Reverse).
The OFF indicator remains illuminated when the system is disabled. The
system defaults to ON every time the reverse gear is selected. Press the
control to disable or enable the system.
The indicator will remain illuminated to indicate a failure of the reverse
sensing system.
Always keep the sensors (located on the rear bumper/fascia) free
from dirt, snow and ice (do not clean the sensors with sharp
objects). These elements may cause the system to operate
inaccurately.
If the 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.
AUXILIARY POWER POINT
Power outlets are designed
for accessory plugs only. Do
not hang any type of accessory or
accessory bracket from the plug.
Improper use of the power outlet
can cause damage not covered by
your warranty.
The auxiliary power point is located
on the instrument panel.
Do not plug optional electrical accessories into the cigarette lighter. Use
the power point.
OFF
Controls and features
26

Rear dome lamp
The dome lamp lights when:
•any door is opened.
•the instrument panel dimmer
switch is held up until the
courtesy lamps come on.
•any of the remote entry controls
are pressed and the ignition is
OFF.
With the ignition key in the ACC or ON position, the rear dome lamp can
be turned ON or OFF by sliding the control.
AUTOMATIC DIMMING REAR VIEW MIRRORS (IF EQUIPPED)
Your vehicle is equipped with an inside rear view mirror with an
auto-dimming function. The electronic day/night mirror will change from
the normal state to the non-glare state when bright lights (glare) reach
the inside rear view mirror. When the inside rear view mirror detects
bright light from in front of or behind the vehicle, the inside rear view
mirror will automatically adjust (darken) to minimize glare.
Do not block the sensor on the backside of the inside rear view mirror
since this may impair proper system performance.
Press the control to turn the mirror
OFF or AUTO.
The mirror will automatically return
to the normal state whenever the
vehicle is placed in R
(Reverse)(when the mirror is on) to ensure a bright clear view when
backing up.
ILLUMINATED VISOR MIRROR (IF EQUIPPED)
To turn on the visor mirror lamps,
lift the mirror cover open.
OFF AUTO
Controls and features
83

Disconnect the combination lap/shoulder belt and allow it to retract
completely to disengage the automatic locking mode and activate the
vehicle sensitive (emergency) locking mode.
After any vehicle collision, the front passenger outboard seat belt
system must be checked by a qualified technician to verify that
the“automatic locking retractor”feature for child seats is still
functioning properly. In addition, all seat belts should be checked for
proper function.
BELT AND RETRACTOR ASSEMBLY MUST BE REPLACED if
the seat belt assembly“automatic locking retractor”feature or
any other seat belt function is not operating properly when checked
according to the procedures in Workshop Manual.
Failure to replace the Belt and Retractor assembly could
increase the risk of injury in collisions.
Safety belt pretensioner
Your vehicle is equipped with safety belt pretensioners at the driver and
front passenger seating positions.
The safety belt pretensioner is a device which removes excess webbing
from the safety belt system. The safety belt pretensioner uses the same
crash sensor system as the front air bag supplemental restraint system
(SRS). When the safety belt pretensioner deploys, webbing from the lap
and shoulder belt is tightened. The driver and front passenger seat belt
system (including retractors, buckles and height adjusters) must be
replaced if the vehicle is involved in a collision that results in
deployment of front air bags and safety belt pretensioners. Refer to the
Safety belt maintenancesection in this chapter.
Failure to replace the safety belt assembly under the above
conditions could result in severe personal injuries in the event of
a collision.
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121

Failure to inspect and if necessary replace the safety belt
assembly under the above conditions could result in severe
personal injuries in the event of a collision.
Refer toCleaning and maintaining the safety beltsin the
Maintenacne and Caresection.
AIR BAG SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Your vehicle is equipped with a crash sensing and diagnostic module
which records information about the air bag and sensor systems. In the
event of a collision this module may save information related to the
collision including information about the air bag system and impact
severity. This information will assist Ford in the servicing of your vehicle
and may help Ford better understand real world collisions and further
improve the safety of future vehicles.
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128

Do not put anything on or over the air bag module. Placing
objects on or over the air bag inflation area may cause those
objects to be propelled by the air bag into your face and torso causing
serious injury.
Do not attempt to service, repair, or modify the Air Bag
Supplemental Restraint System or its fuses. See your Ford or
Lincoln Mercury dealer.
Modifications to the front end of the vehicle, including frame,
bumper, front end body structure and tow hooks may affect the
performance of the air bag sensors increasing the risk of injury. Do not
modify the front end of the vehicle.
Additional equipment may affect the performance of the air bag
sensors increasing the risk of injury. Please refer to the Body
Builders Layout Book for instructions about the appropriate installation
of additional equipment.
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130

Children and air bags
For additional important safety
information, read all information on
safety restraints in this guide.
Children must always be properly
restrained. Accident statistics
suggest that children are safer when
properly restrained in the rear
seating positions than in the front
seating position. Failure to follow
these instructions may increase the
risk of injury in a collision.
Air bags can kill or injure a
child in a child seat.
NEVERplace a rear-facing child
seat in front of an active air bag. If
you must use a forward-facing
child seat in the front seat, move
the seat all the way back.
How does the air bag supplemental restraint system work?
The air bag SRS is designed to
activate when the vehicle sustains
longitudinal deceleration sufficient
to cause the sensors to close an
electrical circuit that initiates air
bag inflation.
The fact that the air bags did not
inflate in a collision does not mean
that something is wrong with the
system. Rather, it means the forces
were not of the type sufficient to
cause activation. Air bags are designed to inflate in frontal and
near-frontal collisions, not rollover, side-impact, or rear-impacts unless
the collision causes sufficient longitudinal deceleration.
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131

The air bags inflate and deflate
rapidly upon activation. After air bag
deployment, it is normal to notice a
smoke-like, powdery residue or
smell the burnt propellant. This may
consist of cornstarch, talcum
powder (to lubricate the bag) or
sodium compounds (e.g., baking
soda) that result from the
combustion process that inflates the
air bag. Small amounts of sodium
hydroxide may be present which
may irritate the skin and eyes, but
none of the residue is toxic.
While the system is designed to help
reduce serious injuries, contact with
a deploying air bag may also cause abrasions, swelling or temporary
hearing loss. Because air bags must inflate rapidly and with considerable
force, there is the risk of death or serious injuries such as fractures,
facial and eye injuries or internal injuries, particularly to occupants who
are not properly restrained or are otherwise out of position at the time
of air bag deployment. Thus, it is extremely important that occupants be
properly restrained as far away from the air bag module as possible while
maintaining vehicle control.
Several air bag system components get hot after inflation. Do not
touch them after inflation.
If the air bag has deployed,the air bag will not function
again and must be replaced immediately.If the air bag is not
replaced, the unrepaired area will increase the risk of injury in a
collision.
The SRS consists of:
•driver and passenger air bag modules (which include the inflators and
air bags),
•one or more impact and safing sensors and diagnostic monitor (RCM),
•a readiness light and tone
•the electrical wiring which connects the components.
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132

The RCM (restraints control module) monitors its own internal circuits
and the supplemental air bag electrical system warning (including the
impact sensors, the system wiring, the air bag system readiness light, the
air bag back up power and the air bag ignitors).
Determining if the system is operational
The SRS uses a readiness light in the instrument cluster or a tone to
indicate the condition of the system. Refer to theAir bag readiness
section in theInstrumentationchapter. Routine maintenance of the air
bag is not required.
A difficulty with the system is indicated by one or more of the following:
•The readiness light will either
flash or stay lit.
•The readiness light will not
illuminate immediately after ignition is turned on.
•A series of five beeps will be heard. The tone pattern will repeat
periodically until the problem and/or light are repaired.
If any of these things happen, even intermittently, have the SRS serviced
at your dealership or by a qualified technician immediately. Unless
serviced, the system may not function properly in the event of a
collision.
Disposal of air bags and air bag equipped vehicles
(including pretensioners)
For disposal of air bags or air bag equipped vehicles, see your local
dealership or qualified technician. Air bags MUST BE disposed of by
qualified personnel.
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133