light Mercury Mountaineer 1999 s Service Manual

Driving off-road with AWD
Your vehicle is specially equipped for driving on sand, snow, mud and
rough terrain and has operating characteristics that are somewhat
different from conventional vehicles, both on and off the road.
Maintain steering wheel control at all times, especially in rough terrain.
Since sudden changes in terrain can result in abrupt steering wheel
motion, make sure you grip the steering wheel from the outside. Do not
grip the spokes.
Drive cautiously to avoid vehicle damage from concealed objects such as
rocks and stumps.
You should either know the terrain or examine maps of the area before
driving. Map out your route before driving in the area. For more
information on driving off-road, read the ªFour Wheelingº supplement in
your owner's portfolio.
If your vehicle gets stuck
If the vehicle is stuck in mud or snow it may be rocked out by shifting
from forward and reverse gears, stopping between shifts, in a steady
pattern. Press lightly on the accelerator in each gear.
Do not rock the vehicle for more than a few minutes. The
transmission and tires may be damaged or the engine can
overheat.
Do not spin the wheels at over 56 km/h (35 mph). The tires may
fail and injure a passenger or bystander.
Sand
When driving over sand, try to keep all four wheels on the most solid
area of the trail. Do not reduce the tire pressures but shift to a lower
gear and drive steadily through the terrain. Apply the accelerator slowly
and avoid spinning the wheels.
Mud and water
If you must drive through high water, drive slowly. Traction or brake
capability may be limited.
When driving through water, determine the depth; avoid water higher
than the bottom of the hubs (if possible) and proceed slowly. If the
ignition system gets wet, the vehicle may stall.
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Once through water, always try the brakes. Wet brakes do not stop the
vehicle as effectively as dry brakes. Drying can be improved by moving
your vehicle slowly while applying light pressure on the brake pedal.
After driving through mud, clean off residue stuck to rotating driveshafts,
halfshafts and tires. Excess mud stuck on tires and rotating driveshafts
causes an imbalance that could damage drive components.
If the transmission, transfer case or front axle are submerged in water,
their fluids should be checked and changed, if necessary.
Water intrusion into the transmission may damage the
transmission.
If the rear axle is submerged in water, the rear axle lubricant should be
checked and changed, if necessary. The rear axle is filled with a
synthetic lubricant and does not normally require a lubricant change for
the life of the vehicle. Rear axle lubricant quantities should not need to
be checked unless a leak is suspected.
Driving on hilly or sloping terrain
When driving on a hill, avoid driving crosswise or turning on steep
slopes. You could lose traction and slip sideways. Drive straight up,
straight down or avoid the hill completely. Know the conditions on the
other side of a hill before driving over the crest.
When climbing a steep hill, start in a lower gear rather than downshifting
to a lower gear from a higher gear once the ascent has started. This
reduces strain on the engine and the possibility of stalling.
When descending a steep hill, avoid sudden braking. Shift to a lower gear
when added engine braking is desired.
When speed control is on and you are driving uphill, your vehicle speed
may drop considerably, especially if you are carrying a heavy load.
If vehicle speed drops more than 16 km/h (10 mph), the speed control
will cancel automatically. Resume speed with accelerator pedal.
If speed control cancels after climbing the hill, reset speed by pressing
and holding the SET ACCEL button (to resume speeds over 50 km/h (30
mph).
Automatic transmissions may shift frequently while driving up steep
grades. Eliminate frequent shifting by shifting out of
(Overdrive) into
D (Drive).
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159

Once through the water, always try the brakes. Wet brakes do not stop
the vehicle as effectively as dry brakes. Drying can be improved by
moving your vehicle slowly while applying light pressure on the brake
pedal.
Driving through deep water where the transmission is submerged
may allow water into the transmission and cause internal
transmission damage.
TRAILER TOWING
Trailer towing with your vehicle may require the use of a trailer tow
option package.
Trailer towing puts additional loads on your vehicle's engine,
transmission, axle, brakes, tires, and suspension. For your safety and to
maximize vehicle performance, be sure to use the proper equipment
while towing.
Follow these guidelines to ensure safe towing procedure:
²Stay within your vehicle's load limits.
²Thoroughly prepare your vehicle for towing. Refer toPreparing to
towin this chapter.
²Use extra caution when driving while trailer towing. Refer toDriving
while you towin this chapter.
²Service your vehicle more frequently if you tow a trailer. Refer to the
severe duty schedule in the service guide and or maintenance guide.
²Do not tow a trailer until your vehicle has been driven at least 800 km
(500 miles).
²Refer to the instructions included with towing accessories for the
proper installation and adjustment specifications.
Do not exceed the maximum loads listed on the Safety Compliance
Certification label. For load specification terms found on the label, refer
toVehicle loadingin this chapter. Remember to figure in the tongue
load of your loaded vehicle when figuring the total weight.
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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
Do not drive faster than 88 km/h (55 mph) when towing a trailer.
Speed control may shut off if you are towing on long, steep grades.
When towing a trailer:
²Use a lower gear when towing up or down steep hills. This will
eliminate excessive downshifting and upshifting for optimum fuel
economy and transmission cooling.
²Anticipate stops and brake gradually.
Exceeding the GCWR rating may cause internal transmission
damage and void your warranty coverage.
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
²Practice turning, stopping and backing up in an area 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.
²Allow more distance for stopping with a trailer attached.
²The trailer tongue weight should be 10% of the loaded trailer weight.
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166

HAZARD FLASHER
Use only in an emergency to warn traffic of vehicle breakdown,
approaching danger, etc. The hazard flashers can be operated when the
ignition is off.
²The hazard lights control is
located on top of the steering
column.
²Depress hazard lights control to
activate all hazard flashers
simultaneously.
²Depress control again to turn the
flashers off.
FUEL PUMP SHUT-OFF SWITCH
After a collision, if the engine cranks but does not start, the fuel pump
shut-off switch may have been activated. The ªFuel Resetº indicator light
will illuminate in the instrument cluster. The shut-off switch is a device
intended to stop the electric fuel pump when your vehicle has been
involved in a substantial jolt.
1. Turn the ignition to the OFF position.
2. Check the fuel system for leaks.
3. If no fuel leak is apparent, reset the fuel pump shut-off switch by
pushing in the reset button.
4. Turn the ignition to the ON position. Pause for a few seconds and
return the key to the OFF position.
5. Make a further check for leaks in the fuel system.
Roadside emergencies
169

The fuses are coded as follows:
Fuse/Relay
LocationFuse Amp
RatingDescription
1 7.5A Power Mirror Switch, Power Antenna
2 7.5A Blower Motor Relay, Air Bag Diagnostic
Monitor
3 7.5A Left Stop/Turn Trailer Tow Connector
4 10A Left Headlamp
5 10A Data Link Connector (DLC)
6 7.5A Rear Blower Motor (Without EATC)
7 7.5A Right Stop/Turn Trailer Tow Connector
8 10A Right Headlamp, Foglamp Relay
9 7.5A Brake Pedal Position Switch
10 7.5A Speed Control/Amplifier Assembly, Generic
Electronic Module (GEM), Shift Lock
Actuator, Blend Door Actuator, A/C - Heater
Assembly, Flasher, Overhead Console, Load
Leveling Module
11 7.5A Instrument Cluster
12 7.5A Washer Pump Relay, Rear Washer Pump
Relay
13 20A Brake Pedal Position Switch, Brake Pressure
Switch
14 10A 4 Wheel Anti-Lock Brake System (4WABS)
Module, 4WABS Main Relay
15 7.5A Instrument Cluster
16 30A Windshield Wiper Motor, Wiper Hi-Lo Relay,
Wiper Run/Park Relay
17 25A Cigar Lighter
18 25A Drivers Unlock Relay, All Unlock Relay, All
Lock Relay
19 25A PCM Power Diode
20 7.5A RAP Module, Generic Electronic Module
(GEM), Radio, Cellular Phone
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Fuse/Relay
LocationFuse Amp
RatingDescription
3 30A* Heated Backlight
4 15A* Fog Lamps and Daytime Running Lamps
5 Ð Not Used
6 10A* Powertrain Control Module
7 30A* 4 Wheel Anti-Lock System (4WABS) Module
8 15A* Rear Wiper Motor
9 20A* Fuel Pump Relay and RAP Module
10 15A* Horn Relay
11 15A* Parklamps Relay and Mainlight Switch
12 30A* Mainlight Switch and Multifunction Switch
13 15A* Heated Oxygen Sensor, EGR Vacuum
Regulator, EVR Solenoid, Camshaft Position
(CMP) Sensor, Canister Vent Solenoid
14 30A* Generator/Voltage Regulator
15 Ð Not Used
1 -- Wiper Park Relay
2 -- A/C Relay
3 -- Wiper High/Low Relay
4 -- PCM Power Relay
5 -- Fuel Pump Relay
6 -- Starter Relay
7 -- Horn Relay
8 -- Rear Wiper Down Relay
9 -- Blower Motor Relay
10 -- Rear Wiper Up Relay
1 -- Not Used
1 -- Not Used
2 -- Electronic Engine Controls Diode
* Mini Fuses ** Maxi Fuses
15.0L Engines Only
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177

CHANGING THE TIRES
If you get a flat tire while driving, do not apply the brake heavily.
Instead, gradually decrease your speed. Hold the steering wheel firmly
and slowly move to a safe place on the side of the road.
Spare tire information
Your vehicle is equipped with a spare tire that must be used for
emergencies only. The spare tire for your vehicle is not as wide as a
regular tire and is designed for emergency use only. Replace this tire
with a full-size tire as soon as possible.
If your vehicle is equipped with 4WD or AWD, a spare tire of a
different size than the road tires should not be used. Such a tire
could result in damage to driveline components and make the
vehicle difficult to control.
Location of the spare tire and tools
The spare tire and tools for your vehicle are stowed in the following
locations:
Tool Location
Spare tire Under the vehicle, just in front of
the rear bumper
Jack, lug nut wrench Left rear quarter panel behind
interior trim
Jack handle Lower rear seat base
Removing the spare tire
1. Insert the jack handle into the
rear bumper opening.
The handle will stop moving and
forward resistance to turning will be
felt when properly engaged.
2. Turn the handle counterclockwise
until tire is lowered to the ground,
the tire can be slid rearward and the
cable is slightly slack.
3. Remove the retainer from the spare tire.
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178

Connecting the jumper cables
1. Connect the positive (+) booster cable to the positive (+) terminal of
the discharged battery.
Note:In the illustrations,lightning boltsare used to designate the
assisting (boosting) battery.
2. Connect the other end of the positive (+) cable to the positive (+)
terminal of the assisting battery.
+–+–
+–+–
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184

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
necessary parts and service. Check your ªWarranty Guideº to 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.
Working with the engine off
1. Set the parking brake and ensure the gearshift is securely latched in P
(Park).
2. Turn off the engine and remove the key.
3. Block the wheels to prevent the vehicle from moving unexpectedly.
Working with the engine on
1. Set the parking brake and ensure the gearshift is securely latched in P
(Park).
2. Block the wheels to prevent the vehicle from moving unexpectedly.
Maintenance and care
191