Page 72 of 312

Average fuel economy (AFE)
Select this function from the INFO
menu to display your average fuel
economy in miles/gallon or
liters/100 km.
If you calculate your average fuel
economy by dividing miles traveled by gallons of fuel used (liters of fuel
used by 100 kilometers traveled), your figure may be different than
displayed for the following reasons:
•your vehicle was not perfectly level during fill-up
•differences in the automatic shut-off points on the fuel pumps at
service stations
•variations in top-off procedure from one fill-up to another
•rounding off the displayed values to the nearest 0.1 gallon (liter)
1. Drive the vehicle at least 5 miles (8 km) with the speed control
system engaged to display a stabilized average.
2. Record the highway fuel economy for future reference.
It is important to press the RESET control after setting the speed
control to get accurate highway fuel economy readings.
Instantaneous fuel economy
Select this function from the INFO
menu to display your instantaneous
fuel economy. This will display your
fuel economy as a bar graph ranging
from
poor economy to
excellent economy.
Your vehicle must be moving to calculate instantaneous fuel economy.
When your vehicle is not moving, this function shows
, one or no bars
illuminated. Instantaneous fuel economy cannot be reset.
2009 Mariner(mrn)
Owners Guide, 2nd Printing
USA(fus)
Driver Controls
72
Page 73 of 312

Setup menu
Press this control for the following
displays:
•Reset to English (if in another
language)
•System Check
•Oil Life
•Units (English/Metric)
•Autolamp Sec (if equipped)
•Autolock (if equipped)
•Autounlock (if equipped)
•Language
•Compass Zone/Compass calibration (if equipped)
Reset to English (if in another language)
When entering the SETUP MENU
and a non-English language has
been selected, “PRESS RESET FOR
ENGLISH” will be displayed to
change back to English.
Press the RESET control to change back to English.
System check
Selecting this function from the
SETUP menu causes the message
center to cycle through each of the
systems being monitored. For each
of the monitored systems, the
message center will indicate either
an OK message or a warning message for three seconds.
Pressing the RESET control cycles the message center through each of
the systems being monitored.
The sequence of the system check report is as follows:
1. Oil life
2. Brake system
3. Liftgate and glass
4. DTE/Fuel level
2009 Mariner(mrn)
Owners Guide, 2nd Printing
USA(fus)
Driver Controls
73
Page 74 of 312

Oil life
An oil change is required whenever indicated by the message center.
USE ONLY RECOMMENDED ENGINE OILS.
To reset the oil monitoring system to 100% after each oil change
[approximately 7,500 miles (12,000 km) or six months] perform the
following:
1. Press and release the SETUP
control to display “OIL LIFE =
XXX% HOLD RESET = NEW”.
2. Press and hold the RESET
control for two seconds and release.
Oil life is set to 100% and “OIL LIFE
SET TO 100%” is displayed.
3. While “OIL LIFE SET TO 100%”
is displayed, if a lower oil life start
value is desired, press and release the RESET control to reduce the start
value. Each press of the RESET control reduces the value by 10 percent.
Note:Oil life start value of 100% equals 7,500 miles (12,000 km) or six
months. For example, setting oil life start value to 60% sets the oil life
start value to 4,500 miles (7,200 km) and 108 days.
Units (English/Metric)
1. Select this function from the
SETUP menu for the current units
to be displayed.
2. Press the RESET control to
change from English to Metric.
2009 Mariner(mrn)
Owners Guide, 2nd Printing
USA(fus)
Driver Controls
74
Page 75 of 312

Autolamp sec
This feature keeps your headlights on for up to three minutes after the
ignition is switched off.
1. To disable/enable the autolamp
delay feature, select this function
from the SETUP control for the
current display mode.
2. Press the RESET control to select
the new Autolamp delay values of 0,
10, 20, 30, 60, 90, 120 or 180 seconds.
Autolock
This feature automatically locks all vehicle doors when the vehicle is
shifted into any gear, putting the vehicle in motion.
1. To disable/enable the autolock
feature, select this function from the
SETUP control for the current
display mode.
2. Press the RESET control to turn
the autolock ON or OFF.
Autounlock
This feature automatically unlocks all vehicle doors when the driver’s
door is opened within 10 minutes of the ignition being turned off.
1. To disable/enable the autounlock
feature, select this function from the
SETUP control for the current
display mode.
2. Press the RESET control switch
to turn the autounlock ON or OFF.
2009 Mariner(mrn)
Owners Guide, 2nd Printing
USA(fus)
Driver Controls
75
Page 76 of 312

Language
1. Select this function from the
SETUP menu for the current
language to be displayed.
2. Waiting four seconds or pressing
the RESET control cycles the
message center through each of the language choices.
Selectable languages are English, Spanish, or French.
3. Press and hold the RESET control for two seconds to set the language
choice.
Compass zone/Compass calibration
Refer toElectronic compassin the this chapter.
System warnings
System warnings alert you to possible problems or malfunctions in your
vehicle’s operating systems.
In the event of a multiple warning situation, the message center will
cycle the display to show all warnings by displaying each one for four
seconds.
The message center will display the last selected feature if there are no
more warning messages. This allows you to use the full functionality of
the message center after you acknowledge the warning by pressing the
RESET control and clearing the warning message.
Warning messages that have been reset are divided into two categories:
•They will reappear on the display 10 minutes from the reset.
•They will not reappear until an ignition off/on cycle has been
completed.
2009 Mariner(mrn)
Owners Guide, 2nd Printing
USA(fus)
Driver Controls
76
Page 77 of 312

This acts as a reminder that these warning conditions still exist within
the vehicle.
Warnings Status
Driver door ajar Warning cannot be reset
Passenger door ajar
Rear left door ajar
Rear right door ajar
Park brake engaged Warning returns after
10 minutes if condition still
exists XXX miles to E fuel level low
Liftgate/Glass ajar Warning returns after the
ignition key is turned from
off to on. Check brake system
Check fuel fill inlet (if equipped)
Brake fluid level low
Low tire pressure
Tire pressure monitor fault
Tire pressure sensor fault
Oil life change soon
Oil change required
DRIVER DOOR AJAR— Displayed when the driver’s door is not
completely closed.
PASSENGER DOOR AJAR— Displayed when the passenger side door
is not completely closed.
REAR LEFT DOOR AJAR— Displayed when the rear left door is not
completely closed.
REAR RIGHT DOOR AJAR— Displayed when the rear right door is
not completely closed.
PARK BRAKE ENGAGED— Displayed when the manual park brake is
set, the engine is running and the vehicle is driven more than 3 mph
(5 km/h). If the warning stays on after the park brake is released,
contact your authorized dealer as soon as possible.
2009 Mariner(mrn)
Owners Guide, 2nd Printing
USA(fus)
Driver Controls
77
Page 78 of 312

XXX MILES TO E FUEL LEVEL LOW— Displayed as an early
reminder of a low fuel condition.
LIFTGATE / GLASS AJAR— Displayed when the liftgate or liftgate
glass is not completely closed. Press RESET to reset display.
CHECK BRAKE SYSTEM— Displayed when the braking system is not
operating properly. If the warning stays on or continues to come on,
contact your authorized dealer as soon as possible.
CHECK FUEL FILL INLET (if equipped)— Displayed when the fuel
fill inlet may not be properly closed. Refer toEasy Fuel™ “no cap” fuel
systemin theMaintenance and Specificationschapter.
BRAKE FLUID LEVEL LOW— Indicates the brake fluid level is low
and the brake system should be inspected immediately. Refer toBrake
fluidin theMaintenance and Specificationschapter.
LOW TIRE PRESSURE— Displayed when one or more tires on your
vehicle have low tire pressure. Refer toInflating your tiresin theTires,
Wheels and Loadingchapter.
TIRE PRESSURE MONITOR FAULT— Displayed when the Tire
Pressure Monitoring System is malfunctioning. If the warning stays on or
continues to come on, contact your authorized dealer as soon as
possible.
TIRE PRESSURE SENSOR FAULT— Displayed when a tire pressure
sensor is malfunctioning, or your spare tire is in use. For more
information on how the system operates under these conditions, refer to
Tire Pressure Monitoring System (TPMS)in theTires, Wheels and
Loadingchapter. If the warning stays on or continues to come on,
contact your authorized dealer as soon as possible.
OIL LIFE CHANGE SOON— Displayed when the engine oil life
remaining is 10% or less. When oil life left is between 10% and 0%, the
XX% OIL LIFE CHANGE SOON message will be displayed.
OIL CHANGE REQUIRED— Displayed when the oil life left reaches
0%, the OIL CHANGE REQUIRED message will be displayed.
2009 Mariner(mrn)
Owners Guide, 2nd Printing
USA(fus)
Driver Controls
78
Page 223 of 312

FUEL PUMP SHUT-OFF SWITCH
This device stops the electric fuel pump from sending fuel to the engine
when your vehicle has had a substantial jolt.
After an accident, if the engine cranks but does not start, this switch
may have been activated.
This switch is located in the front
passenger’s footwell, behind a
flip-up cover, by the kick panel
access cover.
To reset the switch:
1. Turn the ignition to the off
position.
2. Check the fuel system for leaks.
3. If no leaks are apparent, reset the
switch by pushing in on the reset
button.
4. Turn the ignition to the on
position.
5. Wait a few seconds and return
the key to the off position.
6. Make another check for leaks.
FUSES AND RELAYS
Fuses
If electrical components in the
vehicle are not working, a fuse may
have blown. Blown fuses are
identified by a broken wire within
the fuse. Check the appropriate
fuses before replacing any electrical
components.
Note:Always replace a fuse with one that has the specified amperage
rating. Using a fuse with a higher amperage rating can cause severe wire
damage and could start a fire.
15
2009 Mariner(mrn)
Owners Guide, 2nd Printing
USA(fus)
Roadside Emergencies
223