2010 Mercury Mariner reset

2. Press SETUP until PRESS RESET TO CLEAR MYKEY is displayed.
3. Press and release the RESET button. HOLD RESET TO CONFIRM
CLEAR is displayed.
4. Press and hold the RESET button for two seconds until ALL MYKEYS
CLEARED is displayed.
Check MyKey™ System Status
The vehicle System Check will provide the status of the following
MyKey™ parameters:
•MYKEY MILES — This odometer only tracks mileage when a MyKey™
is used. If mileage does not accumulate as expected, then the
MyKey™ is not being used by the intended user. The only way to
reset this odometer to zero is by disabling MyKey™. If this odometer
is lower than the last time you checked, then the MyKey™ system has
been recently cleared.
•# MYKEY(S) PROGRAMMED — Indicates how many MyKeys™ are
programmed to the vehicle. Can be used to detect deletion of a
MyKey™.
•# ADMIN KEYS PROGRAMMED — Indicates how many Admin keys
are programmed to the vehicle. Can be used to detect if an additional
spare key has been programmed to the vehicle
Refer toMessage centerin theInstrument Clusterchapter for MyKey™
system warnings displays.
Using MyKey™ with Remote Start Systems
MyKey™ is not compatible with non-Ford approved aftermarket remote
start systems. If you choose to install a remote start system please see
your authorized dealer for a Ford approved remote start system.
When using a Ford-approved remote start system, the default settings
will recognize the remote start system as an additional Admin Key with
its associated privileges. You should program the remote start system as
a MyKey™ in addition to the key that you have already programmed as a
MyKey™. To program the remote start system as a MyKey™, do the
following:
1. Enter the vehicle and close all doors.
2. Remote start the vehicle using a remote start fob.
3. Follow Steps 1-4 in theCreate a MyKey™section.
Locks and Security
94
2010 Mariner(mrn)
Owners Guide, 2nd Printing
USA(fus)

Note:For all vehicles, the number of MYKEY(S) PROGRAMMED or
ADMIN KEYS PROGRAMMED that is displayed in the MyKey™ System
Status menus will include the remote start system as an additional key in
the total count. See theCheck MyKey™ system statussection.
Note:For all vehicles with remote start installed, it is possible to
program all original vehicle keys as MyKeys™, in which case, you will
need to use your remote start system to reset all MyKeys™ as Admin
keys by doing the following:
1. Enter the vehicle, close all doors.
2. Remote start the vehicle using your remote start fob.
3. Follow Steps 1-4 in theDisable MyKey™section.
Troubleshooting
Condition Potential Causes
Can’t create a MyKey™•Key in the ignition is already a
MyKey™
•Key in the ignition is the last
remaining Admin key (there always
has to be at least one Admin key)
•SecuriLock
passive anti-theft
system is disabled or in unlimited
mode
•Vehicle has been started using a
remote start system that is
programmed as MyKey™. Refer to
Using MyKey™ with remote start
systemssection.
Cannot program the MyKey™
optional settings•Key in the ignition is a MyKey™
•No MyKeys™ are programmed to
the vehicle. Refer toCreate a
MyKey™section
•Vehicle has been started using a
remote start system that is
programmed as MyKey™. Refer to
Using MyKey™ with remote start
systemssection.
Locks and Security
95
2010 Mariner(mrn)
Owners Guide, 2nd Printing
USA(fus)

Condition Potential Causes
Cannot disable MyKey™•Key in the ignition is a MyKey™
•No MyKeys™ are programmed to
the vehicle. Refer toCreate a
MyKey™section
•Vehicle has been started using a
remote start system that is
programmed as MyKey™. Refer to
Using MyKey™ with remote start
systemssection.
Lost the only Admin key•Purchase a new key from your
authorized dealer
Lost any key•For programming spare keys, refer
to theProgramming spare keys
section in this chapter.
I accidentally programmed all
keys as MyKeys™•Vehicle has a remote start system
that is recognized as an Admin key.
Refer to theUsing MyKey™ with
Remote start systemssection to reset
all MyKeys™ as Admin keys.
MyKey™ Programmed total
includes one additional key•Unknown key has been programmed
to the vehicle as a MyKey™.
•Vehicle is equipped with a remote
start system. Refer toUsing MyKey™
with Remote start systemssection.
Admin Keys Programmed total
includes one additional key•Unknown key has been programmed
to the vehicle as Admin key.
•Vehicle is equipped with a remote
start system. Refer toUsing MyKey™
with Remote start systemssection.
MyKey™ miles does not
accumulate•MyKey™ is not being used by the
intended user.
•MyKey™ system has been recently
cleared.
Locks and Security
96
2010 Mariner(mrn)
Owners Guide, 2nd Printing
USA(fus)

Note:With extended use, the flasher may run down your battery.
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
Roadside Emergencies
246
2010 Mariner(mrn)
Owners Guide, 2nd Printing
USA(fus)

If the battery has been disconnected or a new battery has been installed,
the clock and the preset radio stations must be reset once the battery is
reconnected.
•Always dispose of automotive
batteries in a responsible manner.
Follow your local authorized
standards for disposal. Call your
local authorized recycling center
to find out more about recycling
automotive batteries.
ENGINE COOLANT
Checking engine coolant
The concentration and level of engine coolant should be checked at the
intervals listed inscheduled maintenance information.The coolant
concentration should be maintained at 50/50 coolant and distilled water,
which equates to a freeze point of -34°F (-36°C). Coolant concentration
testing is possible with a hydrometer or antifreeze tester. The level of
coolant should be maintained at the FULL COLD level or within the
COLD FILL RANGE in the coolant reservoir. If the level falls below, add
coolant per the instructions in theAdding engine coolantsection.
Your vehicle was factory-filled with a 50/50 engine coolant and water
concentration. If the concentration of coolant falls below 40% or above
60%, the engine parts could become damaged or not work properly.A
50/50 mixture of coolant and water provides the following:
•Freeze protection down to -34°F (-36°C).
•Boiling protection up to 265°F (129°C).
•Protection against rust and other forms of corrosion.
•Proper function of calibrated gauges.
L
E
A
D
RETURN
RECYCLE
Maintenance and Specifications
298
2010 Mariner(mrn)
Owners Guide, 2nd Printing
USA(fus)

Severe climates
If you drive in extremely cold climates (less than –34°F [–36°C]):
•It may be necessary to increase the coolant concentration
above 50%.
•NEVER increase the coolant concentration above 60%.
Increased engine coolant concentrations above 60% will
decrease the overheat protection characteristics of the engine
coolant and may cause engine damage.
•Refer to the chart on the coolant container to ensure the
coolant concentration in your vehicle will provide adequate
freeze protection at the temperatures in which you drive in the
winter months.
If you drive in extremely hot climates:
•It is still necessary to maintain the coolant concentration
above 40%.
•NEVER decrease the coolant concentration below 40%.
Decreased engine coolant concentrations below 40% will
decrease the corrosion/freeze protection characteristics of the
engine coolant and may cause engine damage.
•Refer to the chart on the coolant container to ensure the
coolant concentration in your vehicle will provide adequate
protection at the temperatures in which you drive.
Vehicles driven year-round in non-extreme climates should use a 50/50
mixture of engine coolant and distilled water for optimum cooling system
and engine protection.
What you should know about fail-safe cooling
If the engine coolant supply is depleted, this feature allows the vehicle to
be driven temporarily before incremental component damage is incurred.
The “fail-safe” distance depends on ambient temperatures, vehicle load
and terrain.
How fail-safe cooling works
If the engine begins to overheat:
•The engine coolant temperature gauge will move to the red (hot)
area.
•The service engine soon
indicator light will illuminate.
If the engine reaches a preset over-temperature condition, the engine
will automatically switch to alternating cylinder operation. Each disabled
cylinder acts as an air pump and cools the engine.
Maintenance and Specifications
302
2010 Mariner(mrn)
Owners Guide, 2nd Printing
USA(fus)

Easy Fuel™ “no cap” fuel system
Your fuel tank is equipped with an Easy Fuel™ “no cap” fuel filler
system. This allows you to simply open the fuel filler door and insert the
fuel filler nozzle into the fuel system. The Easy Fuel™ system is
self-sealing and protected against dust, dirt, water and snow/ice.
When fueling your vehicle:
1. Turn the engine off.
2. Open the fuel filler door.
3. Slowly insert the fuel filler nozzle fully into the fuel system. Pump fuel
as normal.
4. After you are done pumping fuel, slowly remove the fuel filler
nozzle—allow about five seconds after pumping fuel before removing the
fuel filler nozzle. This allows residual fuel to drain back into the fuel tank
and not spill onto the vehicle.
Note:A fuel spillage concern may occur if overfilling the fuel tank. Do
not overfill the tank to the point that the fuel is able to bypass the fuel
filler nozzle. The overfilled fuel may run down the drain located below
and in front of the fuel filler door.
If the check fuel fill inlet lamp or CHECK FUEL FILL INLET message
comes on, the fuel fill inlet may not have properly closed. The inlet may
have stuck open or debris may be preventing the inlet from fully closing.
At the next opportunity, safely pull off the road, turn off the engine,
open the fuel filler door and remove any visible debris from the fuel fill
opening. Insert either the fuel fill nozzle or the fuel fill funnel (see
Refilling with a portable fuel containerfor funnel location) provided
with the vehicle several times to dislodge any debris and/or allow the
inlet to close properly. If this action corrects the problem, the check fuel
fill inlet lamp or CHECK FUEL FILL INLET message may not reset
immediately. It may take several driving cycles for the check fuel fill inlet
lamp or CHECK FUEL FILL INLET message to turn off. A driving cycle
consists of an engine start-up (after four or more hours with the engine
off) followed by city/highway driving. Continuing to drive with the check
fuel fill inlet lamp or CHECK FUEL FILL INLET message on may cause
the service engine soon lamp to turn on as well.
WARNING:The fuel system may be under pressure. If you hear
a hissing sound near the fuel filler door (Easy Fuel™ “no cap”
fuel system), do not refuel until the sound stops. Otherwise, fuel may
spray out, which could cause serious personal injury.
Maintenance and Specifications
307
2010 Mariner(mrn)
Owners Guide, 2nd Printing
USA(fus)