2002 FORD EXPLORER service indicator

TheService Engine Soonindicator light illuminates when the ignition is
first turned to the ON position to check the bulb. If it comes on after the
engine is started, one of the engine's emission control systems may be
malfunctioning. The light may illuminate without a driveability concern
being noted. The vehicle will usually be drivable and will not require
towing.
What you should do if the Service Engine Soon light illuminates
Light turns on solid:
This means that the OBD II system has detected a malfunction.
Temporary malfunctions may cause yourService Engine Soonlight to
illuminate. Examples are:
1. The vehicle has run out of fuel. (The engine may misfire or run
poorly.)
2. Poor fuel quality or water in the fuel.
3. The fuel cap may not have been properly installed and securely
tightened.
These temporary malfunctions can be corrected by filling the fuel tank
with high quality fuel of the recommended octane and/or properly
installing and securely tightening the gas cap. After three driving cycles
without these or any other temporary malfunctions present, theService
Engine Soonlight should turn off. (A driving cycle consists of a cold
engine startup followed by mixed city/highway driving.) No additional
vehicle service is required.
If theService Engine Soonlight remains on, have your vehicle serviced
at the first available opportunity.
Light is blinking:
Engine misfire is occurring which could damage your catalytic converter.
You should drive in a moderate fashion (avoid heavy acceleration and
deceleration) and have your vehicle serviced at the first available
opportunity.
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.
Instrumentation
9

Anti-lock brake system (ABS)
Momentarily illuminates when the
ignition is turned to the ON position
to indicate a system check. If the
light remains on, continues to flash
or fails to illuminate, have the
system serviced immediately. With the ABS light on, the anti-lock brake
system is disabled and normal braking is still effective unless the brake
warning light also remains illuminated with the parking brake released.
Turn signal
Illuminates when the left or right
turn signal or the hazard lights are
turned on. If one or both of the
indicators stay on continuously or
flash faster, check for a burned-out
turn signal bulb. Refer toBulbsin theMaintenance and carechapter.
High beams
Illuminates when the high beam
headlamps are turned on.
Anti-theft system (if equipped)
Refer toPerimeter alarm system
(if equipped)andSecuriLocky
passive anti-theft systemin the
Controls and featureschapter.
Charging system
Illuminates when the ignition is
turned to the ON position and the
engine is off. The light also
illuminates when the battery is not
charging properly, requiring
electrical system service.
ABS
THEFT
Instrumentation
11

²4.0L SOHC V6 engine
²4.6L V8 engine
²Oil levels above the MAX mark may cause engine damage. Some oil
must be removed from the engine by a service technician.
7. Put the indicator back in and ensure it is fully seated.
Adding engine oil
1. Check the engine oil. For instructions, refer toChecking the engine
oilin this chapter.
Maintenance and care
237

Severe climates
If you drive in extremely cold climates (less than ±36É C [±34É F]), it
may be necessary to increase the coolant concentration above 50%.
Refer to the chart on the coolant container to ensure the coolant
concentration in your vehicle will provide adequate freeze protection.
Never increase the engine coolant concentration above 60%
(protection to ±60ÉF). At a level over 60%, your engine could overheat
and become damaged.
If you drive in extremely hot climates, it is still necessary to maintain the
coolant concentration at 50/50 coolant and water.Do not allow the
coolant concentration to fall below 40% coolant.At a concentration
less than 40%, the corrosion protection to your engine and cooling
components may be compromised and permanent damage may result.
What you should know about fail-safe cooling
(4.6L V8 engine only)
If the engine coolant supply is depleted, this feature allows the vehicle to
be driven temporarily before incremental component damage is incurred.
The ªfail-safeº distance depends on ambient temperatures, vehicle load
and terrain.
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.
Maintenance and care
246

DRIVELINE UNIVERSAL JOINT AND SLIP YOKE
Your vehicle may be equipped with universal joints that require
lubrication. Refer to the scheduled maintenance guide for maintenance
intervals. If the original universal joints are replaced with universal joints
equipped with grease fittings, lubrication will also be necessary.
BATTERY
Your vehicle is equipped with a
Motorcraft maintenance-free battery
which normally does not require
additional water during its life of
service.
However, for severe usage or in high temperature climates, check the
battery electrolyte level. Refer to the scheduled maintenance guide for
the service interval schedules.
Keep the electrolyte level in each cell up to the ªlevel indicatorº.
Do not overfill the battery cells.
If the electrolyte level in the battery is low, you can add plain tap water
to the battery, as long as you do not use hard water (water with a high
mineral or alkali content). If possible, however, try to only fill the battery
cells with distilled water. If the battery needs water often, have the
charging system checked.
If your battery has a cover/shield, make sure it is reinstalled
after the battery has been cleaned or replaced.
For longer, trouble-free operation, keep the top of the battery clean and
dry. Also, make certain the battery cables are always tightly fastened to
the battery terminals.
If you see any corrosion on the battery or terminals, remove the cables
from the terminals and clean with a wire brush. You can neutralize the
acid with a solution of baking soda and water.
Maintenance and care
251

fog lamps ...................................28
headlamps .................................28
headlamps, flash to pass ..........29
instrument panel, dimming .....29
interior lamps .........................102
replacing bulbs ...............270±274
Lane change indicator
(see Turn signal) ........................89
Liftgate ..............................114, 117
Lights, warning and indicator ......8
air bag ........................................10
anti-lock brakes (ABS) ....11, 177
anti-theft ...................................11
brake ..........................................10
charging system ........................11
cruise indicator .........................12
door ajar ....................................12
fuel cap light .............................10
high beam .................................11
overdrive off ..............................12
safety belt .................................10
service engine soon ....................8
speed control ............................95
turn signal indicator .................11
Load limits .................................194
GAWR ......................................194
GVWR ......................................194
trailer towing ..........................194
Loading instructions .................196
Locks
autolock ...................................124
childproof ................................110
doors ........................................109
Lubricant specifications ...285, 287
Lumbar support, seats .............135
M
Manual transmission .................185fluid capacities ........................283
lubricant specifications ..........287
reverse .....................................187
Message center ...........................19
english/metric button ...............23
system check button ................24
warning messages .....................24
Mirrors .......................................108
automatic dimming
rearview mirror .......................107
cleaning ...................................282
fold away .................................111
heated ......................................111
programmable memory ..........117
side view mirrors (power) .....110
Moon roof ..................................102
Motorcraft parts ................265, 283
O
Octane rating ............................262
Odometer .....................................15
Oil (see Engine oil) ..................235
P
Panic alarm feature,
remote entry system ................117
Parking brake ............................177
Parts (see Motorcraft parts) ....283
Pedals (see Power
adjustable foot pedals) ...............30
Power adjustable foot pedals .....30
Power distribution box
(see Fuses) ...............................213
Power door locks ......................109
Power steering ..........................178
Index
308