2008 Mercury Mariner cooling

8.:Distributes air through the demister vents, floor vents and rear
seat floor vents.
9.Temperature control:Controls the temperature of the airflow in the
vehicle.
10.
Passenger heated seat control (if equipped):Press to
activate/deactivate the passenger heated seat. SeeHeated seatsin the
Seating and Safety Restraintschapter.
11.
Recirculated air:Press to activate/deactivate air
recirculation in the vehicle. Recirculated air may reduce the amount of
time needed to cool down the interior of the vehicle and may also help
reduce undesired odors from reaching the interior of the vehicle.
Recirculated air engages automatically when MAX A/C is selected or can
be engaged manually in any airflow mode except
(defrost).
Recirculated air may turn off automatically in all airflow modes except
MAX A/C. When the ignition switch is turned off and back on, the
climate system will return to the recirculated air mode only if the A/C
button LED is illuminated and the air distribution selection is either
(panel) or(panel/floor).
12.MAX A/C:Distributes recirculated air through the instrument panel
vents to cool the vehicle. This re-cooling of the interior air is more
economical and efficient. Recirculated air may also help reduce
undesirable odors from entering the vehicle. Press the MAX A/C button
again for normal A/C operation.
13.A/C:Press to activate/deactivate air conditioning. Use with
recirculated air to improve cooling performance and efficiency. Engages
automatically in MAX A/C,
(defrost) and(floor/defrost).
14.
Driver heated seat control (if equipped):Press to
activate/deactivate the driver heated seat. SeeHeated seatsin the
Seating and Safety Restraintschapter.
Outside temperature (if equipped):The outside temperature will
appear in the display and is labeled EXT TEMP.
2008 Mariner(mrn)
Owners Guide (post-2002-fmt)
USA(fus)
Climate Controls
35

Operating tips
•To reduce fog build up on the windshield during humid weather,
select
(defrost) or(floor/defrost).
•To reduce humidity build up inside the vehicle, do not drive with the
system off or with
(recirculated air) engaged and A/C off.
•Do not put objects under the front seats that will interfere with the
airflow to the back seats.
•Remove any snow, ice or leaves from the air intake area at the base of
the windshield.
•To improve the time to reach comfort in hot weather, drive with the
windows slightly open for 2-3 minutes after start up or until the
vehicle has been “aired out.”
For maximum cooling performance in MAX A/C mode:
1. Select MAX A/C.
2. Move temperature control selector to the coolest setting.
3. Set the fan to the highest speed initially, then adjust to maintain
comfort.
To aid in side window defogging/demisting in cold weather:
1. Select
.
2. Select A/C.
3. Adjust the temperature control to maintain comfort.
4. Set the fan speed to the highest setting.
5. Direct the outer instrument panel vents towards the side windows.
To increase airflow to the outer instrument panel vents, close the vents
located in the middle of the instrument panel.
Do not place objects on top of the instrument panel as these
objects may become projectiles in a collision or sudden stop.
2008 Mariner(mrn)
Owners Guide (post-2002-fmt)
USA(fus)
Climate Controls
36

5.Power/:Press to activate/deactivate the climate control
system. When the system is off, outside air is shut out. Turn to manually
increase/decrease the fan speed. The manual fan speed setting will
appear on the left side of the display. To return to automatic fan
operation, press AUTO.
6.
:Distributes air through the instrument panel vents.
7.
:Distributes air through the instrument panel vents, demister
vents, floor vents and rear seat floor vents.
8.
:Distributes air through the demister vents, floor vents and rear
seat floor vents.
9.Passenger temperature:Press to engage/disengage separate
passenger side temperature control. Turn to increase/decrease the
temperature on the passenger side of the vehicle. The recommended
initial setting is between 72°F (22°C) and 75°F (24°C), then adjust for
comfort. The passenger side temperature setting will appear in the upper
right corner of the display.
10.
Passenger heated seat control (if equipped):Press to
activate/deactivate the passenger heated seat. SeeHeated seatsin the
Seating and Safety Restraintschapter.
11.
Recirculated air:Press to activate/deactivate air
recirculation in the vehicle. Recirculated air may reduce the amount of
time needed to cool down the interior of the vehicle and may also help
reduce undesired odors from reaching the interior of the vehicle.
Recirculated air engages automatically when MAX A/C is selected or can
be engaged manually in any airflow mode except
(defrost).
Recirculated air may turn off automatically in some airflow modes to
reduce fog potential. When the ignition switch is turned off and back on,
the climate system will return to the recirculated air mode only if the
A/C button LED is illuminated and the air distribution selection is either
AUTO,
(panel) or(panel/floor).
12.MAX A/C:Distributes recirculated air through the instrument panel
vents to cool the vehicle. This re-cooling of the interior air is more
economical and efficient. Recirculated air may also help reduce
undesirable odors from entering the vehicle. Press the MAX A/C button
again for normal A/C operation.
13.A/C:Press to activate/deactivate air conditioning. Use with
recirculated air to improve cooling performance and efficiency. Engages
automatically in AUTO, MAX A/C,(defrost) and(floor/defrost).
2008 Mariner(mrn)
Owners Guide (post-2002-fmt)
USA(fus)
Climate Controls
38

14.Driver heated seat control (if equipped):Press to
activate/adjective the driver heated seat. SeeHeated seatsin the
Seating and Safety Restraintschapter.
Outside temperature:The outside temperature will appear in the
display and is labeled EXT TEMP.
Temperature conversion:To switch between Fahrenheit and Celsius,
refer toSetup menuin theMessage centersection of theDriver
Controlschapter.
Operating tips
•To reduce fog build up on the windshield during humid weather,
select
(defrost) or(floor/defrost).
•To reduce humidity build up inside the vehicle, do not drive with the
system OFF or with
(recirculated air) engaged and A/C off.
•Do not put objects under the front seats that will interfere with the
airflow to the back seats.
•Remove any snow, ice or leaves from the air intake area at the base of
the windshield.
•To improve the A/C cool down, drive with the windows slightly open
for 2-3 minutes after start up or until the vehicle has been “aired out.”
For maximum cooling performance:
•Automatic operation:
1. Press AUTO for full automatic operation.
2. Do not override A/C or
(recirculated air).
3. Set the temperature to 60°F (16°C).
•Manual operation:
1. Select MAX A/C.
2. Select
or.
3. Select
(recirculated air) to provide colder airflow.
4. Set the temperature to 60°F (16°C).
5. Set highest fan setting initially, then adjust to maintain comfort.
2008 Mariner(mrn)
Owners Guide (post-2002-fmt)
USA(fus)
Climate Controls
39

Trailer lamps
Trailer lamps are required on most towed vehicles. Make sure all running
lights, brake lights, turn signals and hazard lights are working. Do not
connect trailer lamps directly to your vehicle’s tail lamps. This can cause
damage to your vehicle’s electrical system. See your authorized dealer or
trailer rental agency for proper instructions and equipment for hooking
up trailer lamps.
Driving while you tow
When towing a trailer:
•To ensure proper “break-in” of powertrain components, do not trailer
tow during the first 1,000 miles (1600 km) of a new vehicle.
•To ensure proper “break-in” of powertrain components during the first
500 miles (800 km) of trailer towing, drive no faster than 70 mph
(112 km/h) with no full throttle starts.
•Turn off the 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.
•To eliminate excessive shifting, use a lower gear. This will also assist
in transmission cooling. (For additional information, refer to
Understanding the gearshift positions of the 4–speed automatic
transmissionin theDriving chapter.
•Anticipate stops and brake gradually.
•Do not exceed the GCWR rating or transmission damage may occur.
Servicing after towing
If you tow a trailer for long distances, your vehicle will require more
frequent service intervals. Refer to yourscheduled maintenance
informationfor 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.
•If you are driving down a long or steep hill, shift to a lower gear. Do
not apply the brakes continuously, as they may overheat and become
less effective.
2008 Mariner(mrn)
Owners Guide (post-2002-fmt)
USA(fus)
Tires, Wheels and Loading
178

•The trailer tongue weight should be 10–15% of the loaded trailer
weight.
•If you will be towing a trailer frequently in hot weather, hilly
conditions, at GCWR, or any combination of these factors, consider
refilling your rear axle with synthetic gear lube if not already so
equipped. Refer to theMaintenance and Specificationschapter for
the lubricant specification. Remember that regardless of the rear axle
lube used, do not tow a trailer for the first 1,000 miles (1600 km) of a
new vehicle, and that the first 500 miles (800 km) of towing be done
at no faster than 70 mph (112 km/h) with no full throttle starts.
•After you have traveled 50 miles (80 km), thoroughly check your
hitch, electrical connections and trailer wheel lug nuts.
•To aid in engine/transmission cooling and A/C efficiency during hot
weather while stopped in traffic, place the gearshift lever in P (Park).
•Vehicles with trailers should not be parked on a grade. If you must
park on a grade, place wheel chocks under the trailer’s wheels.
Launching or retrieving a boat
Disconnect the wiring to the trailer before backing the trailer
into the water. Reconnect the wiring to the trailer after the
trailer is removed from the water.
When backing down a ramp during boat launching or retrieval:
•do not allow the static water level to rise above the bottom edge of
the rear bumper.
•do not allow waves to break higher than 6 inches (15 cm) above the
bottom edge of the rear bumper.
Exceeding these limits may allow water to enter vehicle components:
•causing internal damage to the components.
•affecting driveability, emissions and reliability.
Replace the rear axle lubricant any time the axle has been submerged in
water. Rear axle lubricant quantities are not to be checked or changed
unless a leak is suspected or repair required.
RECREATIONAL TOWING
Follow this guidelines if you have a need for recreational towing. An
example of recreational towing would be towing your vehicle behind a
motorhome. These guidelines are designed to ensure that your transaxle
is not damaged.
2008 Mariner(mrn)
Owners Guide (post-2002-fmt)
USA(fus)
Tires, Wheels and Loading
179

The high-current fuses are coded as follows.
Fuse/Relay
LocationFuse Amp
RatingPower Distribution Box
Description
A 80A Midi EPAS
B 125A Midi SPDJB
1 15A* Heated mirror
2 30A** Rear defroster
3 20A** Rear power point (center console)
4 20A** Fuel pump
5 10A* Powertrain Control Module (PCM)
Keep Alive power
6 15A* Alternator
7 10A* Reverse lamps
8 20A* Trailer tow parking lamps
9 50A** Anti-lock Brake System (ABS)
10 30A** Front wipers
11 30A** Starter
12 40A** Blower motor
13 10A* A/C clutch
14 15A* Trailer tow turn lamps
15 — Not used
16 40A** Cooling fan 1
2008 Mariner(mrn)
Owners Guide (post-2002-fmt)
USA(fus)
Roadside Emergencies
216

Fuse/Relay
LocationFuse Amp
RatingPower Distribution Box
Description
17 40A** Cooling fan 2
18 20A** ABS solenoid
19 30A** Power seats
20 — A/C clutch relay
21A — Rear defroster relay
21B — Not used
21C — Blower relay
21D — PCM relay
22 — Not used
23 — Not used
24 10A* PCM transmission
25 — Not used
26 10A* PCM mil
27 10A* PCM non-mil
28 15A* PCM
29 15A* Ignition coils
30A — Cooling fan 1 relay
30B — Starter relay
30C — Cooling fan main relay
30D — Cooling fan 2 relay
31A — Reverse lamp relay
31B — Fuel pump relay
31C — Trailer tow left turn relay
31D — Trailer tow right turn relay
31E — Trailer tow park relay
31F — Not used
32 — Not used
33 — PCM diode
34 — Start diode
35 10A* Reverse lamp relay, Speed control
module, Rear defrost relay
2008 Mariner(mrn)
Owners Guide (post-2002-fmt)
USA(fus)
Roadside Emergencies
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