2008 Mercury Mariner Hybrid engine

Question Answer
Why does my engine never shut
down above 40 mph (64 km/h)?The engine is required to turn on
above this speed to protect the
transaxle hardware.
Why does my engine stay ON
when it’s extremely cold outside?In order to ensure that the climate
control system can begin heating
the cabin and/or defrosting the
windshield as soon as a driver
requests it, the engine coolant
temperature has to be kept
sufficiently hot. Keeping the
engine on is required to maintain
the correct minimum temperature.
Why does my engine rev up so
high sometimes when I accelerate?Your vehicle’s engine and
transmission are designed to
deliver the power you need at the
most efficient engine speed. This
may be higher than expected
during heavy accelerations, and
may fluctuate during steady state
driving. These are characteristics
of the Atkinson engine cycle and
the eCVT transaxle technology
that help maximize your hybrid’s
fuel economy.
What does it mean when my
power assist gauge moves to the
right? To the left?Electricity is coming out of the
battery when the gauge moves to
the right. Electricity is going into
the battery when the gauge moves
to the left.
2008 Mariner Hybrid(mhv)
Owners Guide (post-2002-fmt)
USA(fus)
Introduction
11

Question Answer
What is the fan noise and slight
tapping sound I hear from the rear
of my hybrid?The fan noise comes from two fans
located inside the high voltage
battery. These fans turn on when
the battery requires cooling air.
The fan speed, and associated
noise level, will change according
to the amount of cooling required
to maintain good performance.
How far can I go in Electric Drive
if I run out of gas?Running out of gas is not
recommended. However, you may
be able to go about one mile,
driving at 30 mph (48 km/h), if the
battery has a normal state of
charge.
What is the engine oil change
service interval?The engine oil should be changed
every 10,000 miles (16,000 km)
under normal operating conditions.
See theScheduled maintenance
guidechapter.
Can I put E10 or E85 in my
vehicle, and how will it affect my
fuel economy?Your hybrid vehicle can use E10
(10% ethanol, 90% gasoline) fuel,
but you may notice slightly
reduced fuel economy because
ethanol contains less energy per
gallon than gasoline. Your hybrid
vehicle is not designed to use E85
(85% ethanol).
How long will my high voltage
battery last? Does it need
maintenance?The high voltage battery system is
designed to last the life of the
vehicle and requires no
maintenance.
2008 Mariner Hybrid(mhv)
Owners Guide (post-2002-fmt)
USA(fus)
Introduction
12

Question Answer
Can you charge the battery with a
plug into an A/C outlet?There are no provisions for
charging the high voltage battery
from a power supply external to
the vehicle.
What is the purpose of the ECON
button?ECON mode may provide
improved fuel economy by
preventing the gasoline engine
from running for the sole purpose
of providing air conditioning. When
the engine turns off, the A/C
compressor does not operate and
warm air may come out of the
vents. In ECON mode, A/C
operates as normal when the
gasoline engine is running.
Can I tow the hybrid behind my
motor home with all four wheels
down?Yes. Your hybrid vehicle can be
“flat-towed” without modification.
See theRecreational Towing
section in theTires, Wheels and
Loadingchapter for more
information.
SPECIAL NOTICES
New Vehicle Limited Warranty
For a detailed description of what is covered and what is not covered by
your vehicle’s New Vehicle Limited Warranty, refer to theWarranty
Guidethat is provided to you along with yourOwner’s Guide.
Special instructions
For your added safety, your vehicle is fitted with sophisticated electronic
controls.
Please read the sectionAirbag supplemental restraint system
(SRS)in theSeating and Safety Restraintschapter. Failure to
follow the specific warnings and instructions could result in personal
injury.
2008 Mariner Hybrid(mhv)
Owners Guide (post-2002-fmt)
USA(fus)
Introduction
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Front seat mounted rear-facing child or infant seats should
NEVERbe placed in front of an active passenger airbag.
Service Data Recording
Service data recorders in your vehicle are capable of collecting and
storing diagnostic information about your vehicle. This potentially
includes information about the performance or status of various systems
and modules in the vehicle, such as engine, throttle, steering or brake
systems. In order to properly diagnose and service your vehicle, Ford
Motor Company, Ford of Canada, and service and repair facilities may
access vehicle diagnostic information through a direct connection to your
vehicle when diagnosing or servicing your vehicle.
Event Data Recording
Other modules in your vehicle — event data recorders — are capable of
collecting and storing data during a crash or near crash event. The
recorded information may assist in the investigation of such an event.
The modules may record information about both the vehicle and the
occupants, potentially including information such as:
•how various systems in your vehicle were operating;
•whether or not the driver and passenger seatbelts were buckled;
•how far (if at all) the driver was depressing the accelerator and/or the
brake pedal;
•how fast the vehicle was traveling; and
•where the driver was positioning the steering wheel.
To access this information, special equipment must be directly connected
to the recording modules. Ford Motor Company and Ford of Canada do
not access event data recorder information without obtaining consent,
unless pursuant to court order or where required by law enforcement,
other government authorities or other third parties acting with lawful
authority. Other parties may seek to access the information
independently of Ford Motor Company and Ford of Canada.
2008 Mariner Hybrid(mhv)
Owners Guide (post-2002-fmt)
USA(fus)
Introduction
14

Vehicle Symbol Glossary
Power Windows
Front/Rear
Power Window Lockout
Child Safety Door
Lock/UnlockInterior Luggage
Compartment Release
Panic AlarmEngine Oil
Engine CoolantEngine Coolant
Temperature
Do Not Open When HotBattery
Avoid Smoking, Flames,
or SparksBattery Acid
Explosive GasFan Warning
Power Steering FluidMaintain Correct Fluid
LevelMAX
MIN
Emission SystemEngine Air Filter
Passenger Compartment
Air FilterJack
Check Fuel CapLow Tire Pressure
Warning
2008 Mariner Hybrid(mhv)
Owners Guide (post-2002-fmt)
USA(fus)
Introduction
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WARNING LIGHTS AND CHIMES
Warning lights and gauges can alert you to a vehicle condition that may
become serious enough to cause extensive repairs. A warning light may
illuminate when a problem exists with one of your vehicle’s functions.
Many lights will illuminate when you start your vehicle to make sure the
bulbs work. If any light remains on after starting the vehicle, refer to the
respective system warning light for additional information.
Check engine:TheCheck Engine
indicator light illuminates when the
ignition is first turned to the RUN
position to check the bulb and to
indicate whether the vehicle is ready for Inspection/Maintenance (I/M)
testing. Normally, the
Check Engine
light will stay on until the engine is
cranked, then turn itself off if no malfunctions are present. However, if
after 15 seconds the
Check Engine
light blinks eight times, it means
that the vehicle is not ready for I/M testing. See theReadiness for
Inspection/Maintenance (I/M) testingin theMaintenance and
Specificationschapter.
Solid illumination after the engine is started indicates the On Board
Diagnostics System (OBD-II) has detected a malfunction. Refer toOn
board diagnostics (OBD-II)in theMaintenance and Specifications
chapter. If the light is blinking, engine misfire is occurring which could
damage your catalytic converter. Drive in a moderate fashion (avoid
heavy acceleration and deceleration) and have your vehicle serviced
immediately by your authorized dealer.
2008 Mariner Hybrid(mhv)
Owners Guide (post-2002-fmt)
USA(fus)
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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.
Check fuel cap:Illuminates when
the fuel cap may not be properly
installed. Continued driving with
this light on may cause the Check
engine warning light to come on,
refer toFuel filler capin the
Maintenance and Specificationchapter.
Brake system warning light:To
confirm the brake system warning
light is functional, it will
momentarily illuminate when the
ignition is turned to the RUN
position (when the engine is not running), or in a position between RUN
and START, or by applying the parking brake when the ignition is turned
to the RUN position. If the brake system warning light does not
illuminate at this time, seek service immediately from your authorized
dealer. Illumination after releasing the parking brake indicates low brake
fluid level and the brake system should be inspected immediately by
your authorized dealer.
Driving a vehicle with the brake system warning light on is
dangerous. A significant decrease in braking performance may
occur. It will take you longer to stop the vehicle. Have the vehicle
checked by your authorized dealer. Driving extended distances with
the parking brake engaged can cause brake failure and the risk of
personal injury.
Anti-lock brake system:If the
ABS light stays illuminated or
continues to flash, a malfunction has
been detected, have the system
serviced immediately by your
authorized dealer. Normal braking is still functional unless the brake
warning light also is illuminated.
P!
BRAKE
ABS
2008 Mariner Hybrid(mhv)
Owners Guide (post-2002-fmt)
USA(fus)
Instrument Cluster
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Airbag readiness:If this light fails
to illuminate when ignition is turned
to the RUN position, continues to
flash or remains on, have the system
serviced immediately by your authorized dealer. A chime will also sound
when a malfunction in the supplemental restraint system has been
detected.
Safety belt:Reminds you to fasten
your safety belt. A Belt-Minder
chime will also sound to remind you
to fasten your safety belt. Refer to
theSeating and safety restraints
chapter to activate/deactivate the Belt-Minderchime feature.
Master vehicle electrical hazard
warning lamp:Indicates Hybrid
component fault/failure that will
cause the vehicle to shutdown or
fail to start.
Note: If the vehicle is still running, the vehicle may soon
shutdown without further warning and should be stopped safely.
If this lamp is lit, stop the vehicle, shift to P (Park), turn the key to the
Off position, and attempt to restart the vehicle. If the fault remains, the
vehicle may require refueling, jump starting, resetting of the shut-off
switches, or service. For information regardingLow voltage
[underhood] battery only)andFuel pump/High voltage shut-off
switchesplease refer to theRoadside Emergencieschapter.
Ready indicator light:Illuminates
once the vehicle has successfully
started. Indicates the vehicle is
ready to drive even when you don’t
hear the engine running.
Charging system:Illuminates when
the 12V charging system is not
working properly.
Engine oil pressure:Illuminates
when the oil pressure falls below the
normal range, refer toEngine oilin
theMaintenance and
Specificationschapter.
2008 Mariner Hybrid(mhv)
Owners Guide (post-2002-fmt)
USA(fus)
Instrument Cluster
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