2003 FORD EXPLORER SPORT check engine light

WARNING LIGHTS AND CHIMES
Warning lights and gauges can alert you to a vehicle condition that may
become serious enough to cause expensive repairs. A warning light may
illuminate when a problem exists with one of your vehicle’s functions.
Many lights will illuminate when you start your vehicle to make sure the
bulb works. If any light remains on after starting the vehicle, have the
respective system inspected immediately.
Check engine:TheCheck Engine
indicator light illuminates when the
ignition is first turned to the ON
position to check the bulb. Solid
illumination after the engine is
started indicates the On Board Diagnostics System (OBD-II) has
detected a malfunction. Refer toOn board diagnostics (OBD-II)in the
Maintenance and Specificationschapter. If the light is blinking, engine
misfire is occurring which could damage your catalytic converter. Drive
in a moderate fashion (avoid heavy acceleration and deceleration) and
have your vehicle serviced immediately.
Under engine misfire conditions, excessive exhaust temperatures
could damage the catalytic converter, the fuel system, interior
floor coverings or other vehicle components, possibly causing a fire.
C12345
6
RPMx1000
ABS
CHECK
ENGINE
CHECK
FUEL
CAP
EFH
H
H
PRN D 2 1THEFT
SPEED
CONT
4WD
HIGH
4WD
LOW
O/D
OFF
MPH 2060
4080
km/h
00
1
20
160100
140
180
20
DOOR
AJAR
CHECK
GAGE
!BRAKE
CHECK
ENGINE
2003 U207 Explorer Sport(u27)
Owners Guide (post-2002-fmt)
USA English(fus)
Instrument Cluster
Instrument Cluster
10

Check fuel cap:Illuminates when
the fuel cap may not be properly
installed. Continued driving with
this light on may cause the Check
Engine warning light to come on.
refer toFuel filler capin theMaintenance and Specificationschapter.
Brake system warning light:To
confirm the brake system warning
light is functional, it will
momentarily illuminate when the
ignition is turned to the ON position
when the engine is not running, or in a position between ON and START,
or by applying the parking brake when the ignition is turned to the ON
position. If the brake system warning light does not illuminate at this
time, seek service immediately from your dealership. Illumination after
releasing the parking brake indicates low brake fluid level and the brake
system should be inspected immediately by your servicing dealership.
Driving a vehicle with the brake system warning light on is
dangerous. A significant decrease in braking performance may
occur. It will take you longer to stop the vehicle. Have the vehicle
checked by your dealer immediately.
Anti-lock brake system:If the
ABS light stays illuminated or
continues to flash, a malfunction has
been detected, have the system
serviced immediately. Normal
braking is still functional unless the brake warning light also is
illuminated.
Air bag readiness:If this light fails
to illuminate when ignition is turned
to ON, continues to flash or remains
on, have the system serviced
immediately. A chime will also
sound when a malfunction in the supplemental restraint system has been
detected.
CHECK
FUEL
CAP
!
BRAKE
ABS
2003 U207 Explorer Sport(u27)
Owners Guide (post-2002-fmt)
USA English(fus)
Instrument Cluster
11

Safety belt:Reminds you to fasten
your safety belt. A chime will also
sound to remind you to fasten your
safety belt.
Charging system:Illuminates when
the battery is not charging properly.
Check gage:Illuminates when any
of the following conditions has
occurred:
•The engine coolant temperature
is high.
•The engine oil pressure is low.
•The fuel gauge is at or near empty.
Door ajar:Illuminates when the
ignition is in the ON position and
any door is open.
Overdrive off:Illuminates when
the overdrive function of the
transmission has been turned off,
refer to theDrivingchapter. If the
light flashes steadily, have the system serviced immediately.
Four wheel drive low:Illuminates
when four-wheel drive low is
engaged.
Four wheel drive high:Illuminates
when four-wheel drive high is
engaged.
Anti-theft system:Flashes when
the SecurilockPassive Anti-theft
System has been activated.
CHECK
GAGE
DOOR
AJAR
O/D
OFF
4WD
LOW
2003 U207 Explorer Sport(u27)
Owners Guide (post-2002-fmt)
USA English(fus)
Instrument Cluster
12

Speed control:Illuminates when
the speed control is activated. Turns
off when the speed control system
is deactivated.
Turn signal:Illuminates when the
left or right turn signal or the
hazard lights are turned on. If the
indicators stay on or flash faster, check for a burned out bulb.
High beams:Illuminates when the
high beam headlamps are turned on.
Key-in-ignition warning chime:Sounds when the key is left in the
ignition in the OFF/LOCK or ACC position and the driver’s door is
opened.
Headlamps on warning chime:Sounds when the headlamps or parking
lamps are on, the ignition is off (and the key is not in the ignition) and
the driver’s door is opened.
GAUGES
Speedometer:Indicates the
current vehicle speed.SPEED
CONT
!
C12345
6
RPMx1000
ABS
CHECK
ENGINE
EFH
H
H
PRN D 2 1THEFT
SPEED
CONT
4WD
HIGH
4WD
LOW
O/D
OFF
MPH 2060
4080
km/h
00
1
20
160100
140
180
20
DOOR
AJAR
CHECK
GAGE
BRAKE
CHECK
FUEL
CAP
2003 U207 Explorer Sport(u27)
Owners Guide (post-2002-fmt)
USA English(fus)
Instrument Cluster
13

Battery voltage gauge:Indicates
the battery voltage when the
ignition is in the ON position. If the
pointer moves and stays outside the
normal operating range (as
indicated by arrows), have the
vehicle’s electrical system checked
as soon as possible.
Engine oil pressure gauge:
Indicates engine oil pressure. The
needle should stay in the normal
operating range (between “L” and
“H”). If the needle falls below the
normal range, stop the vehicle, turn
off the engine and check the engine
oil level. Add oil if needed. If the oil
level is correct, have your vehicle
checked at your dealership or by a
qualified technician.
Fuel gauge:Indicates
approximately how much fuel is left
in the fuel tank (when the ignition
is in the ON position). The fuel
gauge may vary slightly when the
vehicle is in motion or on a grade.
Refer toFilling the tankin the
Maintenance and Specificationschapter for more information..
L
H
H
L
2003 U207 Explorer Sport(u27)
Owners Guide (post-2002-fmt)
USA English(fus)
Instrument Cluster
15

Parking
On some 4WD vehicles, when the transfer case is in the N (Neutral)
position, the engine and transmission are disconnected from the rest of
the driveline. Therefore, the vehicle is free to roll even if the automatic
transmission is in P (Park) or the manual transmission is in gear. Do not
leave the vehicle unattended with the transfer case in N (Neutral)
position. Always set the parking brake fully and turn off the ignition
when leaving the vehicle.
Normal characteristics
On some 4WD vehicles, the initial shift from two-wheel drive to
four–wheel drive while the vehicle is moving can cause some momentary
clunk and ratcheting sounds. This is normal and should be no cause for
concern.
Driving on sand, mud and water
When driving over sand, avoid reducing the tire pressures; instead, shift
to a lower gear. Apply the accelerator slowly and avoid spinning the
wheels. If you must reduce the tire pressure, make sure you re-inflate
the tires as soon as possible. Avoid excessive speed because vehicle
momentum can work against your vehicle and cause it to become stuck.
If you must drive through high
water, drive slowly. Traction or
braking ability may be reduced.
Also, if the ignition system gets wet,
the vehicle may stall.
Once you’re through the water, always dry the brakes by moving your
vehicle slowly while applying light pressure on the brake pedal. Wet
brakes do not stop the vehicle as quickly as dry brakes.
When driving through mud, be cautious of sudden changes in vehicle
speed or direction. Even 4WD vehicles can lose traction in slick mud.
Apply the accelerator slowly and avoid spinning your wheels. If the
vehicle does slide, steer in the direction of the slide until you regain
control of the vehicle. If the transmission, transfer case or either axle
become submerged in mud or water, their fluids should be checked and
changed, if necessary. After driving through mud, clean off residue stuck
to rotating driveshafts and tires. Excess mud stuck on tires and rotating
driveshafts could damage driveline components.
2003 U207 Explorer Sport(u27)
Owners Guide (post-2002-fmt)
USA English(fus)
Driving
110

Never connect any trailer lighting to the vehicle’s taillamp circuits,
because it may damage the electrical system resulting in fire.
Contact your local Ford dealership for assistance in proper trailer tow
wiring installation. Additional electrical equipment may be required.
Using a step bumper
The rear bumper is equipped with an integral hitch and requires only a
ball with a 19 mm (3/4 inch) shank diameter. The bumper has a 1,590 kg
(3,500 lb.) trailer weight and 159 kg (350 lb.) tongue weight capability.
Use a frame-mounted weight distributing hitch for trailers over 1,590 kg
(3,500 lb).
Driving while you tow
When towing a trailer:
•Turn off your speed control. The speed control may shut off
automatically when you are towing on long, steep grades.
•Consult your local motor vehicle speed regulations for towing a trailer.
•Use a lower gear when towing up or down steep hills.
•Anticipate stops and brake gradually.
Servicing after towing
If you tow a trailer for long distances, your vehicle will require more
frequent service intervals. Refer to your scheduled maintenance guide for
more information.
Trailer towing tips
•Practice turning, stopping and backing up before starting on a trip to
get the feel of the vehicle/trailer combination. When turning, make
wider turns so the trailer wheels will clear curbs and other obstacles.
•Allow more distance for stopping with a trailer attached.
•The trailer tongue weight should be no more than 10–15% of the
loaded trailer weight.
•After you have traveled 80 km (50 miles), thoroughly check your
hitch, electrical connections and trailer wheel lug nuts.
•When stopped in traffic for long periods of time in hot weather, place
the gearshift in P (Park) (automatic transmissions) or N (Neutral)
(manual transmissions). This aids engine cooling and air conditioner
efficiency.
2003 U207 Explorer Sport(u27)
Owners Guide (post-2002-fmt)
USA English(fus)
Driving
118

To reduce the risk of personal injury, make sure the engine is
cool before unscrewing the coolant pressure relief cap. The
cooling system is under pressure; steam and hot liquid can come out
forcefully when the cap is loosened slightly.
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 (an opaque 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.
2003 U207 Explorer Sport(u27)
Owners Guide (post-2002-fmt)
USA English(fus)
Maintenance and Specifications
168