2000 Mercury Grand Marquis ECU

Check engine
Your vehicle is equipped with a
computer that monitors the engine's
emission control system. This
system is commonly known as the
On Board Diagnostics System (OBD
II). This OBD II system protects the environment by ensuring that your
vehicle continues to meet government emission standards. The OBD II
system also assists the service technician in properly servicing your
vehicle.
TheCheck Engineindicator light illuminates when the ignition is first
turned to the ON position to check the bulb. If it comes on after the
engine is started, one of the engine's emission control systems may be
malfunctioning. The light may illuminate without a driveability concern
being noted. The vehicle will usually be drivable and will not require
towing.
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 high quality fuel of the recommended octane 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.
CHECK
ENGINE
Instrumentation
9

3. Turn the magazine (A) over.
4. Using the disc holder release
knob (C), pull the disc holder (B)
out of the magazine.
If you pull too hard on the disc holder, the disc holder may come
completely out of the magazine. If this happens, reinsert the disc holder
back into the magazine while pressing on the lever (A).
5. Line up the CD with the groove
of the disc holder. Ensure that the
label on the CD faces downwards.
6. Press in on the disc holder until it
locks securely into the magazine. If
the disc holders are not fully locked
into the magazine, the unit will not
operate.AB
C
A
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Pressing OFF will erase the
previously programmed set speed.
To return to a previously set speed
²Press RES/RSM/RESUME. For
RES/RSM/RESUME to operate,
the vehicle speed must be faster
than 48 km/h (30 mph).
Indicator light (if equipped)
This light comes on when either the
SET ACC/SET ACCEL or RES/RSM/
RESUME controls are pressed. It
turns off when the speed control OFF control is pressed, the brake is
applied or the ignition is turned to the OFF position.
HOMELINKTUNIVERSAL TRANSCEIVER (IF EQUIPPED)
The HomeLinktUniversal Transceiver, located on the driver's visor,
provides a convenient way to replace up to three hand-held transmitters
with a single built-in device. This feature will learn the radio frequency
codes of most current transmitters to operate garage doors, entry gates,
security systems, entry door locks, and home or office lighting.
When programming your HomeLinktUniversal Transceiver, to a
garage door or gate be sure that people and objects are out of
the way to prevent potential harm or damage.
OFF ON
COAST
RESUME
SET
ACCEL
SPEED CONTROL
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65

Replacing lost transmitters
Take all your vehicle's transmitters
to your dealer if service is required.
If you purchase additional
transmitters (up to four may be
programmed into memory), perform
the following procedure:
To reprogram the transmitters
yourself, place the key in the
ignition and turn from OFF to ON
four times in rapid succession within
3 seconds. After doors lock/unlock, press any control on all transmitters
(up to four). When completed, turn the ignition to OFF.
All transmittersmustbe programmed at the same time.
SECURILOCKYPASSIVE ANTI-THEFT SYSTEM
Your vehicle is equipped with a coded-key anti-theft system. Only the
correct keywill be able to start your vehicle. If your keys are lost or
stolen, you must take your vehicle to your dealership for key
reprogramming.
This system provides an advanced level of vehicle theft protection. Your
vehicle's engine can only be started with the two coded keys provided
with your vehicle. Each time you start your vehicle, the coded key is
read by the anti-theft system. If the key identification code matches the
code stored in the anti-theft system, the vehicle's engine is allowed to
start. If the key identification code does not match the code stored in
the system or if a coded key is not detected (vehicle theft situation), the
vehicle's engine will not operate.
If there is any anti-theft problem with your vehicle, ensureALL coded
keysfor that vehicle are brought to the dealership, to aid in
troubleshooting.
The SecuriLockypassive anti-theft system is not compatible with
aftermarket remote start systems. Use of these systems may result in
vehicle starting problems and a loss of security protection. Large metallic
objects, electronic devices on the key chain that can be used to purchase
gasoline or similar items, or a second key on the same key ring as the
PATS ignition key may cause vehicle starting concern and record DTC's
under certain conditions. If present, you need to keep these objects from
touching the PATS ignition key while starting the engine. These objects
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80

and devices cannot damage the PATS ignition key, but can cause a
momentary concern if they are too close to the key during engine start.
If a problem occurs, turn ignition OFF and restart the engine with all
other objects on the key ring held away from the ignition key. Check to
make sure the encoded ignition key is an approved Ford encoded
ignition key.
Spare coded keys can be purchased from your dealership and
programmed to your anti-theft system. Refer toProgramming spare
SecuriLockykeysfor more information.
If one or both of your coded 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 coded keys to your dealership for reinitialization.
Theft indicator
The theft indicator in the instrument cluster will operate as follows:
²When the ignition is OFF, the theft indicator will flash briefly every
two seconds to indicate the anti-theft system is protecting your
vehicle.
²When the ignition is turned to ON or START, the theft indicator will
light for three seconds and then go out. If the theft 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 SecuriLockYkeys
Spare coded keys can be purchased from your dealership and
programmed to your anti-theft system (up to a total of eight keys). Your
dealership can program your new coded key(s) to your vehicle or you
can do it yourself using the following simple procedure. To program a
new coded key yourself, you will need two previously programmed coded
keys (keys that already operate your vehicle's engine). If two previously
programmed coded keys 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 coded key(s) programmed.
Procedure to program spare SecuriLockYkeys to your vehicle
New coded keys must have the correct mechanical key cut for your
vehicle.
Conventional (non-coded) keyscannotbe programmed to your vehicle.
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81

You will need to have two previously programmed coded keys and the
new unprogrammed SecuriLockykey readily accessible for timely
implementation of each step in the procedure. Please read and
understand the entire procedure before you begin.
1. Insert the first previously programmed coded key into the ignition and
turn the ignition from OFF to ON (maintain ignition in ON for at least
one second).
2. Turn ignition to OFF and remove the first coded key from the ignition.
3. Within five seconds of turning the ignition to OFF, insert the second
previously programmed coded key into the ignition and turn the ignition
from OFF to ON (maintain ignition in ON for at least one second but no
more than five seconds).
4. Turn the ignition to OFF and remove the second coded key from the
ignition.
5. Within 10 seconds of turning the ignition to OFF, insert the new
unprogrammed key (new key/valet key) into the ignition and turn the
ignition from OFF to ON (maintain ignition in ON for at least one
second). This step will program your new key to a coded key.
6. To program additional new unprogrammed key(s), repeat this
procedure from step 1.
If the programming procedure was successful, the new coded key(s) will
start the vehicle's engine. The theft indicator (located on the instrument
panel) will light for three seconds and then go out.
If the programming procedure was not successful, the new coded key(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 new
spare key(s) programmed.
KEYLESS ENTRY SYSTEM
With the keyless entry keypad, you
can:
²lock or unlock the vehicle doors
without using the key.
²open trunk
²disable/enable horn chirp.
²disable/enable autolock
123
45678
90
Controls and features
82

All occupants of the vehicle, including the driver, should always
properly wear their safety belts, even when an air bag SRS is
provided.
It is extremely dangerous to ride in a cargo area, inside or
outside of a vehicle. In a collision, people riding in these areas
are more likely to be seriously injured or killed. Do not allow people to
ride in any area of your vehicle that is not equipped with seats and
safety belts. Be sure everyone in your vehicle is in a seat and using a
safety belt properly.
In a rollover crash, an unbelted person is significantly more likely
to die than a person wearing a seat belt.
Each seating position in your vehicle has a specific safety belt
assembly which is made up of one buckle and one tongue that
are designed to be used as a pair. 1) Use the shoulder belt on the
outside shoulder only. Never wear the shoulder belt under the arm.
2) Never swing the safety belt around your neck over the inside
shoulder. 3) Never use a single belt for more than one person.
Always transport children 12 years old and under in the back
seat and always properly use appropriate child restraints.
Combination lap and shoulder belts
1. Insert the belt tongue into the
proper buckle (the buckle closest to
the direction the tongue is coming
from) until you hear a snap and feel
it latch. Make sure the tongue is
securely fastened in the buckle.
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92

A belt-positioning booster should be used if the shoulder belt rests in
front of the child's face or neck, or if the lap belt does not fit snugly on
both thighs, or if the thighs are too short to let the child sit all the way
back on the seat cushion when the lower legs hang over the 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:
²Review and follow the information
presented in theAir Bag
Supplemental Restraint System
section in this chapter.
²Use the correct safety belt buckle
for that seating position (the
buckle closest to the direction the
tongue is coming from).
²Insert the belt tongue into the
proper buckle until you hear a
snap and feel it latch. Make sure the tongue is securely fastened in the
buckle.
Seating and safety restraints
107