1998 Mercury Mountaineer ECU

What you should do if the
check engine light illuminates
Light turns on solid:
This means that the OBD II system
has detected a malfunction.
Temporary malfunctions may cause
yourCheck Enginelight to
illuminate. Examples are:
1. The vehicle has run out of fuel.
(The engine may misfire or run
poorly.)
2. Poor fuel quality or water in the
fuel.
3. The fuel cap may not have been
properly installed and securely
tightened.
These temporary malfunctions can
be corrected by filling the fuel tank
with good quality fuel and/or
properly installing and securely
tightening the gas cap. After three
driving cycles without these or any
other temporary malfunctions
present, theCheck Enginelight
should turn off. (A driving cycle
consists of a cold engine startup
followed by mixed city/highway
driving.) No additional vehicle
service is required.
If theCheck Enginelight remains
on, have your vehicle serviced at
the first available opportunity.
Light is blinking:
Engine misfire is occurring which
could damage your catalytic
converter. You should drive in a
moderate fashion (avoid heavy
acceleration and deceleration) and
Instrumentation
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²Unlock the doors by using your
remote entry transmitter.
²Unlock the doors with a key.
Turn the key full travel (toward
the front of the vehicle) to make
sure the alarm disarms.
²Unlock the doors by using your
keyless entry keypad.
²Turn ignition to ACC or ON.
²Press the panic control on the
remote entry transmitter. This
will disarm the system only if
the alarm is sounding.
SecuriLockYanti-theft system
The SecuriLockyanti-theft system
provides an advanced level of
vehicle theft protection. Your
vehicle's engine can only be started
with the two special SecuriLocky
electronically coded keys provided
with your vehicle. Each time you
start your vehicle, the
123
45678
90
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57

SecuriLockykey is read by the
SecuriLockyanti-theft system. If
the SecuriLockykey identification
code matches the code stored in
the SecuriLockyanti-theft system,
the vehicle's engine is allowed to
start. If the SecuriLockykey
identification code does not match
the code stored in the system or if
a SecuriLockykey is not detected
(vehicle theft situation), the
vehicle's engine will not operate.
Spare SecuriLockykeys can be
purchased from your dealership
and programmed to your
SecuriLockyanti-theft system.
Refer toProgramming spare
SecuriLockykeysfor more
information.
If one or both of your SecuriLocky
keys are lost or stolen and you
want to ensure the lost or stolen
key will not operate your vehicle,
bring your vehicle and all available
SecuriLockykeys to your
dealership for reinitialization.
Theft indicator
The theft indicator on the
instrument cluster will operate as
follows:
²When the ignition is OFF, the
theft indicator will flash briefly
every 2 seconds to indicate the
SecuriLockysystem is
protecting your vehicle.
²When the ignition is turned to
RUN or START, the theft
indicator will light for 3 seconds
and then go out. If the theft
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58

indicator stays on for an
extended period of time or
flashes rapidly, have the system
serviced by your dealership or a
qualified technician.
Programming spare
SecuriLock
Ykeys
Spare SecuriLockykeys can be
purchased from your dealership
and programmed to your
SecuriLockyanti-theft system (up
to a total of 8 keys). Your
dealership can program your new
SecuriLockykey(s) to your
vehicle or you can do it yourself
using the following simple
procedure. To program a new
SecuriLockykey yourself, you will
need two previously programmed
SecuriLockykeys (keys that
already operate your vehicle's
engine). If two previously
programmed SecuriLockykeys are
not available (one or both of your
original keys were lost or stolen),
you must bring your vehicle to
your dealership to have the spare
SecuriLockykey(s) programmed.
Procedure to program spare
SecuriLock
Ykeys to your
vehicle
New SecuriLockykeys must have
the correct mechanical key cut for
your vehicle.
Conventional (non-SecuriLocky)
keyscannotbe programmed to
your vehicle.
You will need to have two
previously programmed
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59

SecuriLockykeys and the new
unprogrammed SecuriLockykey
readily accessible for the
procedure. Please read and
understand the entire procedure
before you begin.
1. Insert the first previously
programmed SecuriLockykey into
the ignition switch and turn the
ignition from OFF to RUN
(maintain ignition in RUN for at
least one second).
2. Turn ignition to OFF and
remove the first SecuriLockykey
from the ignition switch.
3. Within five seconds of turning
the ignition to OFF, insert the
second previously programmed
SecuriLockykey into the ignition
switch and turn the ignition from
OFF to RUN (maintain ignition in
RUN for at least one second but no
more than 5 seconds).
4. Turn the ignition to OFF and
remove the second SecuriLocky
key from the ignition switch.
5. Within 10 seconds of turning the
ignition to OFF, insert the
unprogrammed SecuriLockykey
(new key) into the ignition switch
and turn the ignition from OFF to
RUN (maintain ignition switch in
RUN for at least one second). This
step will program your new
SecuriLockykey.
6. If it is desired to program
additional SecuriLockykey(s),
repeat this procedure from step 1.
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60

If the programming procedure was
successful, the new SecuriLocky
key(s) will start the vehicle's
engine. The theft indicator
(located on the instrument cluster)
will light for three seconds and
then go out.
If the programming procedure was
not successful, the new
SecuriLockykey(s) will not
operate the vehicle's engine. The
theft indicator will flash on and off.
Wait at least one minute and then
repeat the procedure from step 1.
If failure repeats, bring your
vehicle to your dealership to have
the spare SecuriLockykey(s)
programmed.
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61

edge of the seat cushion. You may
wish to discuss the special needs
of your child with your
pediatrician.
SAFETY SEATS FOR CHILDREN
Child and infant or child safety
seats
Use a safety seat that is
recommended for the size and
weight of the child. Carefully
follow all of the manufacturer's
instructions with the safety seat
you put in your vehicle. If you do
not install and use the safety seat
properly, the child may be injured
in a sudden stop or collision.
When installing a child safety seat:
²Use the correct safety belt
buckle for that seating position.
²Make sure the tongue is
securely fastened in the buckle.
²Keep the buckle release button
pointing up and away from the
safety seat, with the tongue
between the child seat and the
release button, to prevent
accidental unbuckling.
²Place seat back in upright
position.
²Put the safety belt in the
automatic locking mode. Refer
toAutomatic locking mode.
Ford recommends the use of a
child safety seat having a top
tether strap. Install the child safety
seat in a seating position which is
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2. Pull down on the shoulder belt
and then grasp the shoulder belt
and lap belt together.
3. While holding the shoulder and
lap belt portions together, route
the tongue through the child seat
according to the child seat
manufacturer's instructions. Be
sure the belt webbing is not
twisted.
4. Insert the belt tongue into the
proper buckle for that seating
position until you hear and feel the
latch engage. Make sure the
tongue is latched securely by
pulling on it.
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83