1999 FORD EXPLORER coolant temperature

High beams
Illuminates when the high beam
headlamps are turned on.
Anti-theft system (if equipped)
Refer toSecuriLockypassive
anti-theft systemin theControls
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.
Check gauge
Illuminates when the engine coolant
temperature is high, the engine oil
pressure is low or the fuel gauge is
at or near empty. The ignition must
be in the ON position for this lamp to illuminate. The lamp will also
illuminate for several seconds after the ignition is turned to the ON
position. Refer toEngine coolant temperature gauge, Engine oil
pressure gaugeorFuel gaugein this chapter for more information.
Four wheel drive low (if equipped)
This light momentarily illuminates
when the ignition is turned to ON.
Illuminates when four-wheel drive
low is engaged. If the light continues
to flash have the system serviced.
THEFT
CHECK
GAGE
4WD
LOW
Instrumentation
9

Speedometer
Indicates the current vehicle speed.
Engine coolant temperature gauge
Indicates the temperature of the
engine coolant. At normal operating
temperature, the needle remains
within the normal area (the area
between the ªHº and ªCº). If it
enters the red section, the engine is
overheating. Stop the vehicle as
soon as safely possible, switch off
the engine immediately and let the
engine cool. Refer toEngine
coolantin theMaintenance and
carechapter.
Never remove the coolant reservoir cap while the engine is
running or hot.
This gauge indicates the temperature of the engine coolant, not the
coolant level. If the coolant is not at its proper level the gauge indication
will not be accurate.
10MPH 205060
70
304080
90
km/h
0 0 0
10 100
1
20
1
0 0 0 0 0 0406080100
120
140
160
180
20
C
H
Instrumentation
12

System check
Press the system check control to
display the status of the following
systems:
²engine oil life left
²engine oil level
²voltage level
²engine coolant temperature
²washer fluid level
²fuel level
The engine oil life left has two phases. The first display will indicate the
oil change status (OK, SOON, REQUIRED). The second display will
indicate the percentage of oil life remaining. The display OIL TEMP
SIGNAL ERROR indicates a problem with the system. Following this
display, contact your dealer or qualified service technician for system
maintenance.
Operating the message center during system check
The message center controls can be operated as follows during the
system check sequence:
1. Press the system check controls to advance to the next display.
2. Press the reset control to immediately conclude the system check.
3. Press the range, fuel status or fuel economy control to conclude the
system check and display the requested feature.
4. Press the metric/English control to conclude the system check and
change the previous display to the new mode.
5. Press the oil change reset control to conclude the system check and
begin the oil change reset procedure.
An oil change is recommended whenever indicated by the message
center. Use only recommended engine oils.
The message center will tell you the percent of oil life left during system
check. This percentage is based on your driving history and the time
since your last oil change. In order to ensure accurate oil life left
indications, you should only perform the following procedure after you
have the oil changed.
ENGLISH/
METRICRANGESTATUS
ECONRESETSYSTEM
CHECKOIL
CHANGE
RESET
FUEL
Instrumentation
17

4. After idling for a few seconds, apply the brake and release the parking
brake.
Using the engine block heater (if equipped)
An engine block heater warms the engine coolant, which improves
starting, warms up the engine faster and allows the heater-defroster
system to respond quickly. Use of an engine block heater is strongly
recommended if you live in a region where temperatures reach -23ÉC
(-10ÉF) or below.
For best results, plug the heater in at least three hours before starting
the vehicle. Using the heater for longer than three hours will not harm
the engine, so the heater can be plugged in the night before starting the
vehicle.
To prevent electrical shock, do not use your heater with
ungrounded electrical systems or two-pronged (cheater)
adapters.
Guarding against exhaust fumes
Although odorless and colorless, carbon monoxide is present in exhaust
fumes. Take precautions to avoid its dangerous effects.
If you ever smell exhaust fumes of any kind inside your vehicle,
have your dealer inspect and fix your vehicle immediately. Do
not drive if you smell exhaust fumes. These fumes are harmful and
could kill you.
Have the exhaust and body ventilation systems checked whenever:
²the vehicle is raised for service.
²the sound of the exhaust system changes.
²the vehicle has been damaged in a collision.
Engine exhaust, some of its constituents, and certain vehicle
components contain or emit chemicals known to the State of
California to cause cancer, and birth defects or other reproductive
harm.
Starting
143

For vehicles with orange coolant,no recycling process has been
approved at this time and use of such coolant may harm engine and
cooling system components.
Always dispose of used automotive fluids in a responsible manner.
Follow your community's regulations and standards for recycling and
disposing of automotive fluids.
Coolant refill capacity
To find out how much fluid your vehicle's cooling system can hold, refer
toRefill capacitiesin theCapacities and specificationschapter.
Have your dealer check the engine cooling system for leaks if you have
to add more than 1.0 liter (1.0 quart) of engine coolant per month.
Severe winter climate
If you drive in extremely cold climates (less than ±36ÉC [±34ÉF]), 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 is such that the coolant will not freeze at the temperature
level in which you drive during winter months. Never increase the engine
coolant concentration above 60%. Leave a 50/50 mixture of engine
coolant and water in your vehicle year-round in non-extreme climates.
CHECKING AND ADDING POWER STEERING FLUID
Check the power steering fluid. Refer to the Scheduled Maintenance
Guide for the service interval schedules. If adding fluid is necessary, use
only MERCONtAT F.
Maintenance and care
213

1. Start the engine and let it run until it reaches normal operating
temperature (the engine coolant temperature gauge indicator will be
near the center of the normal area between H and C).
2. While the engine idles, turn the steering wheel left and right several
times.
3. Turn the engine off.
4.If your vehicle is equipped with a 4.0L OHV V6 engine,check the
fluid level on the dipstick. It should be within the FULL HOT range. Do
not add fluid if the level is within this range.
5.If your vehicle is equipped with a 4.0L SOHC V6 or a 5.0L V8
engine,check the fluid level in the reservoir. It should be between the
MIN and MAX lines. Do not add fluid if the level is within this range.
6. If the fluid is low, add fluid in small amounts, continuously checking
the level until it reaches the correct operating range. Be sure to put the
cap back on the reservoir.
TRANSMISSION FLUID
Checking automatic transmission fluid
Refer to your Scheduled Maintenance Guide for scheduled intervals for
fluid checks and changes. Your transmission does not consume fluid.
However, the fluid level should be checked if the transmission is not
working properly, i.e., if the transmission slips or shifts slowly or if you
notice some sign of fluid leakage.
Automatic transmission fluid expands when warmed. To obtain an
accurate fluid check, drive the vehicle until it is warmed up
(approximately 30 km [20 miles]). If your vehicle has been operated for
an extended period at high speeds, in city traffic during hot weather or
pulling a trailer, the vehicle should be turned off for about 30 minutes to
allow fluid to cool before checking.
1. Drive the vehicle 30 km (20 miles) or until it reaches normal operating
temperature.
2. Park the vehicle on a level surface and engage the parking brake.
3. With the parking brake engaged and your foot on the brake pedal,
start the engine and move the gearshift lever through all of the gear
ranges. Allow sufficient time for each gear to engage.
4. Latch the gearshift lever in P (Park) and leave the engine running.
Maintenance and care
215

Air bag supplemental restraint
system ........................................126
and child safety seats ............128
description .......................127,130
disposal ....................................133
indicator light ..................130,132
passenger air bag ............128,131
Air conditioning
automatic temperature
control system .23,24,25,26,27,28
rear seat controls .....................29
Air suspension
description ..............................148
warning light .............................10
All Wheel Drive (AWD),
driving off road .........................162
Armrests ....................................102
Automatic transmission
driving an automatic
overdrive .....150,151,152,153,154
Axle
refill capacities ........................247
Battery
voltage gauge ............................14
Brakes ........................................145
anti-lock ............................145,146
anti-lock brake system (ABS)
warning light ...........................146
fluid, checking and adding ....208
shift interlock ..........................149
Break-in period ..........................2,3
Cargo area shade ......................104
Cargo cover ...............................104
CD player .....................75,77,78,79
Child safety seats
attaching with tether straps ..138
in rear seat ..............................136
tether anchorage hardware ...138
Cleaning your vehicle ...............241
engine compartment ..............242
exterior .............................242,244
exterior lamps .........................244interior ..............................245,246
plastic parts ............................244
washing ....................................241
waxing .....................................242
wheels ......................................244
windows ..................................246
wiper blades ............................245
woodtone trim ........................246
Clutch
fluid ..........................................209
operation while driving ...154,155
recommended shift speeds ....156
Compass, electronic ....................90
calibration .................................92
set zone adjustment .................91
Console ...............................101,102
overhead ...............................87,88
rear ..........................................102
Controls
power seat ...............................117
Coolant ...............................212,213
checking and adding ..............211
refill capacities ........................213
Defrost
rear window ..............................30
Driveline universal joint and
slip yoke ....................................219
Driving under special
conditions ...........................161,164
sand ..................................160,163
snow and ice ......160,162,163,164
through water ..................160,163
Emission control system ..........234
Engine
check engine/service engine
soon light ....................................6
coolant .....................................210
idle speed control ...................219
service points ............203,204,205
starting after a collision .........178
Engine block heater .................143
Index
257

Engine oil
checking and adding ..............207
dipstick ....................................205
specifications ...................205,207
Exhaust fumes ..........................143
Floor mats .................................103
Four-Wheel Drive
vehicles ..............................9,10,157
control trac .............................157
description .......................157,159
driving off road ................160,162
electronic shift ..........................31
Fuel
choosing the right fuel ...........228
comparisons with EPA fuel
economy estimates .................234
detergent in fuel .....................229
filling your vehicle
with fuel ...........................227,230
gauge .........................................14
quality ......................................229
running out of fuel .................230
safety information relating to
automotive fuels .....................227
Fuses ............................179,180,181
Gas mileage
(see Fuel economy) .........231,232,
233,234
Gauges .........................................11
engine coolant temperature
gauge .........................................12
engine oil pressure gauge ........14
GVWR
(Gross Vehicle Weight Rating)
calculating ...............................167
Hazard flashers .........................178
Head restraints ...........116,118,119
Headlamps
aiming ......................................241
autolamp system .......................97
bulb specifications ..................240
high beam ..............................9,19warning chime ..........................11
Heating ........................................20
heating and air conditioning
system .............................20,21,22
Hood ..........................................201
Ignition .......................................252
Inspection/maintenance (I/M)
testing ........................................236
Instrument panel
cleaning ...................................245
Keyless entry system
autolock ............................109,110
keypad .....................................111
locking and unlocking doors ..112
programming entry
code ..................................111,112
Keys
key in ignition chime ...............11
positions of the ignition ...........79
Lamps
daytime running light ...............19
fog lamps ...................................19
headlamps .................................19
headlamps, flash to pass ..........20
instrument panel, dimming .....20
replacing bulbs ...............236,237,
238,239,240
Lane change indicator
(see Turn signal) ........................79
Liftgate ......................................103
Lights, warning and indicator
air bag ..........................................7
anti-lock brakes (ABS) ..............8
anti-theft .....................................9
brake ............................................8
charging system ..........................9
check coolant ..............................9
cruise indicator .........................10
door ajar ....................................10
fuel reset .....................................7
overdrive off ..............................10
safety belt ...................................8
Index
258