2009 Mercury Mariner Hybrid fuel

Seating and Safety Restraints 107
Seating 107
Safety restraints 118
Airbags 132
Child restraints 147
Tires, Wheels and Loading 164
Tire information 166
Tire inflation 169
Tire Pressure Monitoring System (TPMS) 182
Vehicle loading 186
Trailer towing 193
Recreational towing 197
Driving 198
Starting 198
Brakes 203
Traction Control™/AdvanceTrac206
Transmission operation 212
Reverse sensing system 215
Roadside Emergencies 224
Getting roadside assistance 224
Hazard flasher switch 226
Fuel pump/High voltage shut-off switches 226
Fuses and relays 228
Changing tires 236
Wheel lug nut torque 246
Jump starting 248
Wrecker towing 253
Customer Assistance 255
Reporting safety defects (U.S. only) 261
Reporting safety defects (Canada only) 262
Cleaning 263
Table of Contents
2
2009 Mariner Hybrid(mhv)
Owners Guide, 1st Printing
USA(fus)

Maintenance and Specifications 270
Engine compartment 272
Engine oil 275
Battery 278
Engine Coolant and Motor/Electronics Coolant 280
Fuel information 286
Air filter(s) 301
Part numbers 303
Maintenance product specifications and capacities 304
Engine data 307
Accessories 310
Scheduled Maintenance Guide 312
Normal scheduled maintenance and log 317
Special operating conditions and log 322
Index 328
All rights reserved. Reproduction by any means, electronic or mechanical
including photocopying, recording or by any information storage and retrieval
system or translation in whole or part is not permitted without written
authorization from Ford Motor Company. Ford may change the contents without
notice and without incurring obligation.
Copyright © 2008 Ford Motor Company
Table of Contents
3
2009 Mariner Hybrid(mhv)
Owners Guide, 1st Printing
USA(fus)

CONGRATULATIONS
Congratulations on acquiring your new Mercury Hybrid. Please take the
time to get well acquainted with your vehicle by reading this handbook.
The more you know and understand about your vehicle, the greater the
safety and pleasure you will derive from driving it.
For more information on Ford Motor Company and its products visit the
following website:
•In the United States: www.ford.com
•In Canada: www.ford.ca
Additional owner information is given in separate publications.
ThisOwner’s Guidedescribes every option and model variant available
and therefore some of the items covered may not apply to your
particular vehicle. Furthermore, due to printing cycles it may describe
options before they are generally available.
Remember to pass on thisOwner’s Guidewhen reselling the vehicle. It
is an integral part of the vehicle.
WARNING: Fuel pump and high voltage battery shut-off
switches:In the event of an accident the fuel pump shut-off
switch may automatically cut off the fuel supply to the engine and the
high voltage shut-off switch cuts off power from the high voltage
battery. These switches can also be activated through sudden vibration
(e.g. collision when parking). For information on resetting the fuel
pump shut-off switch and the high voltage battery shutoff switch, refer
to theFuel pump/high voltage shut-off switchesin theRoadside
Emergencieschapter.
SAFETY AND ENVIRONMENT PROTECTION
Warning symbols in this guide
How can you reduce the risk of personal injury to yourself or others? In
this guide, answers to such questions are contained in comments
highlighted by the warning triangle symbol. These comments should be
read and observed.
2009 Mariner Hybrid(mhv)
Owners Guide, 1st Printing
USA(fus)
Introduction
4

Do not add friction modifier compounds or special break-in oils since
these additives may prevent piston ring seating. SeeEngine oilin the
Maintenance and Specificationschapter for more information on oil
usage.
HYBRID OPERATION
The Hybrid is a whole new kind of SUV that combines electric and
gasoline propulsion without compromise, to provide breakthrough
performance and efficiency. It requires no special fuels and never has to
be plugged in. Familiarizing yourself with these unique characteristics
will help ensure optimal performance from your new vehicle.
Normal vehicle operation
Starting:Turn the ignition key to the START position while your vehicle
is in Park (P). The gas engine will turn on,accompanied by the green
“ready indicator” light. Your engine may shut off shortly after starting,
depending on temperature and battery charge level. This is a natural
part of your Hybrid’s fuel-saving features. The “ready indicator” light will
stay on, and you do not need to restart the vehicle.
Note:You may notice higher engine speeds upon start-up. This
temporary condition is normal and necessary to heat up the cabin for
occupant comfort.
Driving:The gas engine automatically starts and stops to provide power
when it’s needed and to save fuel when it’s not. While coasting at low
speeds, coming to a stop, or standing, the gas engine normally shuts
down and the vehicle operates in electric-only mode. Conditions that
may cause the engine to start up or remain running include:
•Driving request for moderate to rapid acceleration
•Vehicle speed above 40 mph (65 kph)
•Ascending a hill
•ECON mode not selected (while Climate Control is ON)
•Selection of climate control defrost mode or defrost/floor mode
•Charge level of high voltage battery is low
•Very high or low outside temperature (to provide system
cooling/heating)
Stopping:The gas engine may shut off to conserve fuel as you come to
a stop. Restarting the vehicle is not required. Simply step on the
accelerator when you are ready to drive.
2009 Mariner Hybrid(mhv)
Owners Guide, 1st Printing
USA(fus)
Introduction
6

Transmission Operation:Due to the technologically advanced,
electronically controlled Continuously Variable Transaxle (eCVT) you will
not feel shift changes like those of a non-hybrid vehicle. Your Hybrid’s
transmission is designed to do its work seamlessly.
Since your engine speed is controlled by the transmission, it may
seem elevated at times. This is normal hybrid operation and helps
deliver fuel efficiency and performance.
Neutral:It is not recommended to idle the vehicle in (N) Neutral for
extended periods of time because this will discharge your high voltage
battery and decrease fuel economy. Also, the engine cannot provide
power to the hybrid system in (N) Neutral.
Low Gear:Low gear (L) is designed to mimic the enhanced engine
braking available in non-hybrid vehicles. On long downhill grades, (L)
Low gear may produce high engine speeds to provide necessary engine
braking. This is normal and will not damage your vehicle. Response
during acceleration should be the same as in the (D) Drive position.
Reverse:(R) Reverse Gear vehicle speed is limited to 22 mph
(35 km/h).
Unique Hybrid operating characteristics
Your Hybrid, with its new technology, behaves differently compared to a
non-hybrid. Here is a description of the major differences:
Battery:Your Hybrid is equipped with a high voltage battery cooling
system in the rear of the vehicle. A cool battery ensures battery life and
provides the best possible performance. Your hybrid high voltage battery
may periodically re-condition itself to ensure maximum efficiency. You
may notice slight changes in drivability during this process, but it’s an
important part of your Hybrid’s high voltage battery optimization
features.
You may hear a series of clicks from the cargo area when you first turn
the key in the ignition. This sound is the high voltage contactors closing
to allow you to start your hybrid.
In addition, you may hear fan noise and a slight tapping sound from the
rear as the vent door operates. This fan may continue to operate for
short durations after the vehicle has been turned off. These noises are a
customary part of hybrid operation and do not require service.
If the vehicle is left inoperative for over 31 days, it may be necessary to
jumpstart the vehicle. For more information, refer toJump starting
your (Low voltage [underhood] battery only)in theRoadside
Emergencieschapter.
2009 Mariner Hybrid(mhv)
Owners Guide, 1st Printing
USA(fus)
Introduction
7

Engine:The engine speed in your hybrid is not directly tied to your
vehicle speed. Your vehicle’s engine and transmission are designed to
deliver the power you need at the most efficient engine speed. During
heavy accelerations, your hybrid may reach high engine speeds (up to
6000 RPM). This is characteristic of the Atkinson cycle engine
technology helping to maximize your hybrid’s fuel economy.
In prolonged mountainous driving, you may see the engine tachometer
changing without your input. This is intentional and maintains the
battery charge level. You may also notice during extended downhill
driving that your engine continues to run instead of shutting off.
During this “engine braking”, the engine stays on, but it’s not using any
fuel. You may also hear a slight whine or whistle when operating your
vehicle. This is the normal operation of the electric generator in the
hybrid system.
During certain events (such as vehicle servicing) your low voltage
(underhood) battery may become disconnected or disabled. When this
occurs, and after reconnecting the low voltage (underhood) battery and
driving the vehicle, the engine may continue to operate for 3-5 seconds
after the key is turned to the 1 (LOCK) position. This is a normal
condition, as the vehicle’s computers are relearning the operating
characteristics of your particular engine in order to operate it at
maximum efficiency.
Braking:Your hybrid is equipped with standard hydraulic braking and
regenerative braking. Regenerative braking is performed by your
transmission and it captures brake energy and stores it in your high
voltage battery.
Driving to optimize fuel economy
Your fuel economy should improve throughout your hybrid’s break-in
period. As with any vehicle, fuel economy can be significantly impacted
by your driving habits and accessory usage. For best results, keep in
mind these tips:
Tire Inflation:Keep tires properly inflated and only use recommended
size.
Climate Control:Your hybrid is equipped with an “ECON” button that
offers a more fuel efficient operation of your automatic temperature
control system.
When activated, the “ECON” feature may allow the engine to shut down
at low speeds or when your vehicle is stopped.
If cooler temperature is desired, the “ECON” button can be turned off,
for better interior cooling but lower fuel economy.
2009 Mariner Hybrid(mhv)
Owners Guide, 1st Printing
USA(fus)
Introduction
8

The “ECON” mode turns itself off when you select defrost or
defrost/floor mode, although on cold days, you may still experience
engine shut-down while in defrost or defrost/floor mode.
Drive Habits:Aggressive driving increases the amount of energy
required to move your vehicle. In general, better fuel economy is
achieved with mild to moderate acceleration and deceleration. Moderate
braking is particularly important since it allows you to maximize the
energy captured by the regenerative braking system.
NOTE:Having your engine running is not always an indication of
inefficiency – in some cases it is actually more efficient than driving in
electric mode.
Additional Tips:
•Do not carry extra loads
•Be mindful of adding external accessories that may increase
aerodynamic drag
•Observe posted speed limits
•Perform all scheduled maintenance
•There is no need to wait for your engine to “warm up”. The vehicle is
ready to drive immediately after starting
2009 Mariner Hybrid(mhv)
Owners Guide, 1st Printing
USA(fus)
Introduction
9

Question Answer
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.
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.
2009 Mariner Hybrid(mhv)
Owners Guide, 1st Printing
USA(fus)
Introduction
11