2002 FORD EXPEDITION check engine light

Air bag readiness
Illuminates to confirm that the air
bags (front or side) are operational.
If the light fails to illuminate,
continues to flash or remains on,
have the system serviced immediately.
Charging system
Illuminates when the battery is not
charging properly.
Check air suspension
Illuminates momentarily when the
ignition is turned to the ON position
and the engine is OFF. The light also
illuminates when the air suspension
switch is turned OFF or the air suspension system requires servicing.
For information on the air suspension system, refer to theDriving
chapter.
Low fuel
Illuminates when the fuel level in
the fuel tank is at, or near, empty
(refer toFuel gaugein this chapter
for more information).
Low washer fluid
Illuminates when the windshield
washer fluid is low.
Speed control
Illuminates when the speed control
is activated.
CK
SUSP
LOW
FUEL
Instrument cluster
12

Oil pressure/Engine coolant
Illuminates when the engine coolant
temperature is above the normal
range or the engine oil pressure is
below normal range. Check the
engine oil and coolant level refer to
Adding engine oilandAdding coolantin theMaintenance and
specifications chapter.
Turn signals
Illuminates when the turn signals or
the hazard lights are turned on. If
the lights stay on continuously or
flash faster, check for a burned-out
bulb.
High beams
Illuminates when the high beam
headlamps are turned on.
Door ajar
Illuminates when any door is open
(or not fully closed).
SecuriLockYanti-theft system
Illuminates when the anti-theft
alarm system is armed. If the light
fails to illuminate, continues to flash
or remains on, have the system
serviced.
Refer toSecuriLockypassive anti-theft systemin theLocks and
Securitychapter.
DOOR
AJAR
THEFT
Instrument cluster
13

Automatic disarming
Switching the ignition to the 4 (ON) position with acoded keydisarms
the vehicle. The
THEFTlight will illuminate for three seconds and then
go out. If the
THEFTlight stays on for an extended period of time or
flashes rapidly, have the system serviced by your dealership or a
qualified technician.
Key information
Your vehicle is supplied withtwo
coded keys.Only acoded keywill
start your vehicle. Spare coded keys
can be purchased from your
dealership. Your dealership can
program your key or you can ªdo it
yourselfº, refer toProgramming
spare keys.
Large metallic objects, electronic
devices on the key chain that can be
used to purchase gasoline or similar
items, or a second key on the same
key ring as thecoded keymay
cause vehicle starting issues. If
present, you need to keep these
objects from touching thecoded
keywhile starting the engine. These
objects and devices cannot damage
thecoded key,but can cause a
momentary NOÐSTART condition if
they are too close to the key during
engine start. If a problem occurs,
turn ignition OFF and restart the
engine with all other objects on the
key ring held away from the ignition key. Check to make sure thecoded
keyis an approved Lincolncoded key.
Locks and security
105

environmental conditions such as cold, heat, moisture, road dust, salt or
mud. If a ªmetal-to-metal,º ªcontinuous grindingº or ªcontinuous squealº
sound is present while braking, the brake linings may be worn-out and
should be inspected by a qualified service technician.
Anti-lock brake system (ABS)
On vehicles equipped with an anti-lock braking system (ABS), a noise
from the hydraulic pump motor and pulsation in the pedal may be
observed during ABS braking events. Pedal pulsation coupled with noise
while braking under panic conditions or on loose gravel, bumps, wet or
snowy roads is normal and indicates proper functioning of the vehicle's
anti-lock brake system. The ABS performs a self-check after you start
the engine and begin to drive away. A brief mechanical noise may be
heard during this test. This is normal. If a malfunction is found, the ABS
warning light will come on. If the vehicle has continuous vibration or
shudder in the steering wheel while braking, the vehicle should be
inspected by a qualified service technician.
The ABS operates by detecting the
onset of wheel lockup during brake
applications and compensates for
this tendency. The wheels are
prevented from locking even when
the brakes are firmly applied. The
accompanying illustration depicts
the advantage of an ABS equipped
vehicle (on bottom) to a non-ABS
equipped vehicle (on top) during hard braking with loss of front braking
traction.
Using ABS
²In an emergency or when maximum efficiency from the four-wheel
ABS is required, apply continuous force on the brake. The four wheel
ABS will be activated immediately, thus allowing you to retain full
steering control of your vehicle and, providing there is sufficient
space, will enable you to avoid obstacles and bring the vehicle to a
controlled stop.
²The anti-lock system does not decrease the time necessary to apply
the brakes or always reduce stopping distance. Always leave enough
room between your vehicle and the vehicle in front of you to stop.
²We recommend that you familiarize yourself with this braking
technique. However, avoid taking any unnecessary risks.
Driving
155

SERVICE RECOMMENDATIONS
To help you service your vehicle:
²We highlight do-it-yourself items in the engine compartment for easy
location.
²We provide a scheduled maintenance guide which makes tracking
routine service easy.
If your vehicle requires professional service, your dealership can provide
the necessary parts and service. Check yourWarranty Guideto find out
which parts and services are covered.
Use only recommended fuels, lubricants, fluids and service parts
conforming to specifications. Motorcraft parts are designed and built to
provide the best performance in your vehicle.
PRECAUTIONS WHEN SERVICING YOUR VEHICLE
Be especially careful when inspecting or servicing your vehicle.
²Do not work on a hot engine.
²When the engine is running, make sure that loose clothing, jewelry or
long hair does not get caught up in moving parts.
²Do not work on a vehicle with the engine running in an enclosed
space, unless you are sure you have enough ventilation.
²Keep all lit cigarettes, open flames and other lit material away from
the battery and all fuel related parts.
If you disconnect the battery, the engine must ªrelearnº its idle
conditions before your vehicle will drive properly, as explained inBattery
in this chapter.
Maintenance and specifications
225

WINDSHIELD WASHER FLUID
Washer fluid
Check the washer fluid whenever
you stop for fuel. The reservoir is
highlighted with a
symbol.
If the level is low, add enough fluid
to fill the reservoir. In very cold
weather, do not fill the reservoir all
the way.
Only use a washer fluid that meets Ford specification ESR-M17P5±A.
Refer toLubricant specificationsin 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.
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.
Checking and adding washer fluid for the liftgate
Washer fluid for the liftgate is supplied by the same reservoir as the
windshield.
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).
Maintenance and specifications
228

How fail-safe cooling works
If the engine begins to overheat:
²The engine coolant temperature
gauge will move to the red (hot)
area.
²The
and thesymbol
will illuminate.
²TheService Engine Soon
indicator light will illuminate.
If the engine reaches a preset over-temperature condition, the engine
will automatically switch 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:
²The engine power will be limited.
²The air conditioning system will be disabled.
Continued operation will increase the engine temperature:
²The engine will completely shut down.
²Steering and braking effort will increase.
Once the engine temperature cools, the engine can be re-started. Take
your vehicle to a service facility as soon as possible to minimize engine
damage.
When fail-safe mode is activated
You have limited engine power when in the fail-safe mode, so drive the
vehicle with caution. The vehicle will not be able to maintain high speed
operation and the engine will run rough. Remember that the engine is
capable of completely shutting down automatically to prevent engine
damage, therefore:
1. Pull off the road as soon as safely possible and turn off the engine.
2. Arrange for the vehicle to be taken to a service facility.
3. If this is not possible, wait a short period for the engine to cool.
4. Check the coolant level and replenish if low.
Never remove the coolant reservoir cap while the engine is
running or hot.
C
H
Maintenance and specifications
239

²Sudden or hard accelerations may reduce fuel economy.
²Slow down gradually.
²Driving at reasonable speeds (traveling at 88 km/h [55 mph] uses 15%
less fuel than traveling at 105 km/h [65 mph]).
²Revving the engine before turning it off may reduce fuel economy.
²Using the air conditioner or defroster may reduce fuel economy.
²You may want to turn off the speed control in hilly terrain if
unnecessary shifting between third and fourth gear occurs.
Unnecessary shifting of this type could result in reduced fuel
economy.
²Warming up a vehicle on cold mornings is not required and may
reduce fuel economy.
²Resting your foot on the brake pedal while driving may reduce fuel
economy.
²Combine errands and minimize stop-and-go driving.
Maintenance
²Keep tires properly inflated and use only recommended size.
²Operating a vehicle with the wheels out of alignment will reduce fuel
economy.
²Use recommended engine oil. Refer toLubricant specificationsin
this chapter.
²Perform all regularly scheduled maintenance items. Follow the
recommended maintenance schedule and owner maintenance checks
found in your vehicle scheduled maintenance guide.
Conditions
²Heavily loading a vehicle or towing a trailer may reduce fuel economy
at any speed.
²Carrying unnecessary weight may reduce fuel economy (approximately
0.4 km/L [1 mpg] is lost for every 180 kg [400 lb] of weight carried).
²Adding certain accessories to your vehicle (for example bug
deflectors, rollbars/light bars, running boards, ski/luggage racks) may
reduce fuel economy.
²Using fuel blended with alcohol may lower fuel economy.
Maintenance and specifications
247