2003 Mercury Mountaineer overheating

Engine coolant temperature
gauge:Indicates engine coolant
temperature. At normal operating
temperature, the needle will be in
the normal range (between“H”and
“C”). If it enters the red section, the
engine is overheating. Stop the
vehicle as soon as safely possible,
switch off the engine and let the
engine cool.
Never remove the coolant reservoir cap while the engine is
running or hot.
Odometer:Registers the total kilometers (miles) of the vehicle.
•Standard instrument cluster
•Optional instrument cluster
Refer to Message Center in the
Drivers Controls chapter on how to
switch the display from Metric to
English.
Trip odometer:Registers the kilometers (miles) of individual journeys.
•Standard instrument cluster
Press and release the
SELECT/RESET button to toggle
between odometer and trip
odometer display.
•Optional instrument cluster
Press and release the TRIP/RESET
button to toggle between odometer
and trip odometer display.
TRIP
TRIP
Instrument Cluster
15

6. At the garage door opener receiver (motor-head unit) in the garage,
locate the“learn”or“smart”button (usually near where the hanging
antenna wire is attached to the unit).
7. Press and release the“learn”or“smart”button. (The name and color
of the button may vary by manufacturer.)
Note:There are 30 seconds in which to initiate step eight.
8. Return to the vehicle and firmly press, hold for two seconds and
release the HomeLinkbutton. Repeat the press/hold/release sequence
again, and, depending on the brand of the garage door opener (or other
rolling code equipped device), repeat this sequence a third time to
complete the programming.
HomeLinkshould now activate your rolling code equipped device. To
program additional HomeLinkbuttons begin with step 2 in the
“Programming”section. For questions or comments, please contact
HomeLink atwww.homelink.comor1–800–355–3515.
Gate Operator & Canadian Programming
During programming, your
hand-held transmitter may
automatically stop transmitting—
not allowing enough time for
HomeLinkto accept the signal
from the hand-held transmitter.
After completing steps 1 and 2
outlined in the“Programming”
section, replace step 3 with the
following:
Note:If programming a garage door opener or gate operator, it is
advised to unplug the device during the“cycling”process to prevent
overheating.
•Continue to press and hold the HomeLinkbutton (note step 3 in the
“Programming”section) while you press and release—every two
seconds(“cycle”) your hand-held transmitter until the frequency
signal has been accepted by the HomeLink. The red indicator light
will flash slowly and then rapidly after HomeLinkaccepts the radio
frequency signal.
•Proceed with step 4 in the“Programming”section.
Driver Controls
64

Warning display Status
Warning-tire very low (if
equipped)Warning returns every minute
Check engine temperature Warning returns after 10 minutes
Transmission overheated
Check transmission
Low fuel level
Check fuel cap
Check charging system
Low brake fluid level
Low oil pressure
Check tire pressure (if
equipped)Warning returns after the ignition key
is turned from OFF to ON.
Check spare tire pressure (if
equipped)
Tire pressure system fault (if
equipped)
Tire pressure sensor fault (if
equipped)
Low washer fluid level
Door ajar
Change oil soon
Oil change required
CHECK ENGINE TEMPERATURE.Displayed when the engine
coolant is overheating. Stop the vehicle as soon as safely possible, turn
off the engine and let it cool. Check the coolant and coolant level. Refer
toEngine coolantin theMaintenance and specificationschapter. If
the warning stays on or continues to come on, contact your dealer as
soon as possible.
TRANSMISSION OVERHEATED.Indicates the transmission is
overheating. This warning may appear when towing heavy loads or when
driving in a low gear at a high speed for an extended period of time.
Stop the vehicle as soon as safely possible, turn off the engine and let it
cool. Refer toTransmission fluidin theMaintenance and
specificationschapter. If the warning stays on or continues to come on,
contact your dealer for transmission service as soon as possible.
Driver Controls
75

4x2 w/automatic transmission
GCWR (Gross Combined Weight Rating)/Trailer Weight
Engine Rear axle ratio Maximum
GCWR-kg (lbs.)Trailer weight
range-kg (lbs.)
(0-Maximum)
4.0L SOHC/4.6L* 3.55 3493 (7700) 0-1451 (0-3200)
4.0L SOHC
w/Class III Trailer
Tow Package3.73 LS 4645 (10240) 0-2595 (0-5720)
4.6L* 3.73/3.73 LS 5262 (11600) 0-3211 (0-7080)
Notes:- For high altitude operation, reduce GCW by 2% per 300 meters (1000
ft) elevation. For definitions of terms used in this table and instructions on
how to calculate your vehicle load, refer toVehicle loadingin this chapter.
Maximum trailer weights shown. The combined weight of the completed towing
vehicle and the loaded trailer must not exceed the GCWR.
*-When towing maximum loads under high outside temperatures and on steep
grades, the A/C system may cycle on and off to protect the engine from
overheating. This may result in a temporary increase of interior temperatures.
Towing a trailer over 1588 kg (3500 lbs.) requires a weight distributing hitch.
AWD w/automatic transmission
GCWR (Gross Combined Weight Rating)/Trailer Weight
Engine Rear axle ratio Maximum
GCWR-kg (lbs.)Trailer weight
range-kg (lbs.)
(0-Maximum)
4.0L SOHC/4.6L* 3.55 3493 (7700) 0-1497 (0-3300)
4.0L SOHC
w/Class III Trailer
Tow Package3.73 LS 4536 (10000) 0-2395 (0-5280)
4.6L* 3.73/3.73 LS 5262 (11600) 0-3121 (0- 6880)
Notes:- For high altitude operation, reduce GCW by 2% per 300 meters (1000
ft) elevation. For definitions of terms used in this table and instructions on
how to calculate your vehicle load, refer toVehicle loadingin this chapter.
Maximum trailer weights shown. The combined weight of the completed towing
vehicle and the loaded trailer must not exceed the GCWR.
*-When towing maximum loads under high outside temperatures and on steep
grades, the A/C system may cycle on and off to protect the engine from
overheating. This may result in a temporary increase of interior temperatures.
Towing a trailer over 1588 kg (3500 lbs.) requires a weight distributing hitch.
Driving
159

Do not add engine coolant when the engine is hot. Steam and
scalding liquids released from a hot cooling system can burn you
badly. Also, you can be burned if you spill coolant on hot engine parts.
Do not put engine coolant in the windshield washer fluid
container. If sprayed on the windshield, engine coolant could
make it difficult to see through the windshield.
•Add Motorcraft Premium Gold Engine Coolant
(yellow-colored), VC-7–A (VC-7–B in Oregon), meeting Ford
Specification WSS-M97B51–A1.
Note:Use of Motorcraft Cooling System Stop Leak Pellets, VC-6, may
darken the color of Motorcraft Premium Gold Engine Coolant from
yellow to golden tan.
•Do not add/mix an orange-colored, extended life coolant such
as Motorcraft Speciality Orange Engine Coolant, VC-2 (US) or
CXC-209 (Canada), meeting Ford specification WSS-M97B44–D
with the factory-filled coolant.Mixing Motorcraft Speciality Orange
Engine Coolant or any orange-colored extended life product with your
factory filled coolant can result in degraded corrosion protection.
•A large amount of water without engine coolant may be added, in case
of emergency, to reach a vehicle service location. In this instance, the
cooling system must be drained and refilled with a 50/50 mixture of
engine coolant and distilled water as soon as possible. Water alone
(without engine coolant) can cause engine damage from corrosion,
overheating or freezing.
•Do not use alcohol, methanol, brine or any engine coolants
mixed with alcohol or methanol antifreeze (coolant).Alcohol
and other liquids can cause engine damage from overheating or
freezing.
•Do not add extra inhibitors or additives to the coolant.These
can be harmful and compromise the corrosion protection of the engine
coolant.
For vehicles with overflow coolant systems with a non-pressurized cap
on the coolant recovery system, add coolant to the coolant recovery
reservoir when the engine is cool. Add the proper mixture of coolant and
water to the“cold full”level. For all other vehicles, which have a coolant
degas system with a pressurized cap, or if it is necessary to remove the
coolant pressure relief cap on the radiator of a vehicle with an overflow
system, follow these steps to add engine coolant.
Maintenance and Specifications
221

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.
Maintenance and Specifications
222