
3. Run the engine until it reaches normal operating temperature.
4. Allow the engine to idle for at least one minute.
5. Turn the A/C on and allow the engine to idle for at least one minute.
6. Release the parking brake. With your foot on the brake pedal and with
the A/C on, put the vehicle in D (Drive) and allow the engine to idle for
at least one minute.
7. Drive the vehicle to complete the relearning process.
•The vehicle may need to be driven 10 miles (16 km) or more to
relearn the idle and fuel trim strategy.
•If you do not allow the engine to relearn its idle trim, the idle
quality of your vehicle may be adversely affected until the idle
trim is eventually relearned.
If the battery has been disconnected or a new battery has been installed,
the clock and radio settings 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
mileage 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
(such as the Rotunda Battery and Antifreeze Tester, 014–R1060). 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 coolant
section.
L
E
A
D
RETURN
RECYCLE
2006 Mark LT(mlt)
Owners Guide (post-2002-fmt)
USA(fus)
Maintenance and Specifications
212

Readiness for Inspection/Maintenance (I/M) testing
In some localities, it may be a legal requirement to pass an I/M test of
the on-board diagnostics system. If yourService engine soonlight is on,
refer to the description in theWarning lights and chimessection of the
Instrument Clusterchapter. Your vehicle may not pass the I/M test with
theService engine soonlight on.
If the vehicle’s powertrain system or its battery has just been serviced,
the on-board diagnostics system is reset to a “not ready for I/M test”
condition. To ready the on-board diagnostics system for I/M testing, a
minimum of 30 minutes of city and highway driving is necessary as
described below:
•First, at least 10 minutes of driving on an expressway or highway.
•Next, at least 20 minutes driving in stop-and-go, city-type traffic with
at least four idle periods.
Allow the vehicle to sit for at least eight hours without starting the
engine. Then, start the engine and complete the above driving cycle. The
engine must warm up to its normal operating temperature. Once started,
do not turn off the engine until the above driving cycle is complete.
POWER STEERING FLUID
Check the power steering fluid.
Refer to the scheduled maintenance
guide for the service interval
schedules.If adding fluid is
necessary, use only MERCON
AT F.
1. Start the engine and let it run until it reaches normal operating
temperature (the engine coolant temperature gauge indicator will be
near the center of the normal area between H and C).
2. While the engine idles, turn the steering wheel left and right several
times.
3. Turn the engine off.
2006 Mark LT(mlt)
Owners Guide (post-2002-fmt)
USA(fus)
Maintenance and Specifications
228

3. Install a new air filter element
into the tray assembly.
4. Return air filter tray to original
position by pressing firmly on the
handle until all rearward movement
stops and secure the two clamps.
MOTORCRAFT PART NUMBERS
Component 5.4L 3V V8 engine
Air filter element FA-1754
Battery BXT-65-650
Fuel filter FG-986B
Oil filter FL-820-S
PCV valve
1
Spark plugs2
1
The PCV valve is a critical emission component. It is one of the items
listed inscheduled maintenance informationand is essential to the
life and performance of your vehicle and to its emissions system.
For PCV valve replacement, see your dealer or a qualified service
technician. Refer toscheduled maintenance informationfor the
appropriate intervals for changing the PCV valve.
Replace the PCV valve with one that meets Ford material and
design specifications for your vehicle, such as a Motorcraft or
equivalent replacement part. The customer warranty may be void
for any damage to the emissions system if such a PCV valve is not
used.
2For spark plug replacement, see your dealer or a qualified service
technician. Refer toscheduled maintenance informationfor the
appropriate intervals for changing the spark plugs.
Replace the spark plugs with ones that meet Ford material and
design specifications for your vehicle, such as Motorcraft or
equivalent replacement parts. The customer warranty may be
void for any damage to the engine if such spark plugs are not
used.
2006 Mark LT(mlt)
Owners Guide (post-2002-fmt)
USA(fus)
Maintenance and Specifications
234

Cargo organization and management
Rear seat entertainment systems
Trailer hitches, wiring harnesses and accessories
Peace of mind
First aid and highway safety kits
Mobile-ease hands-free communication system
Remote start
Vehicle security systems
For maximum vehicle performance, keep the following information in
mind when adding accessories or equipment to your vehicle:
•When adding accessories, equipment, passengers and luggage to your
vehicle, do not exceed the total weight capacity of the vehicle or of
the front or rear axle (GVWR or GAWR as indicated on the Safety
Compliance Certification label). Consult your dealer for specific weight
information.
•The Federal Communications Commission (FCC) and Canadian Radio
Telecommunications Commission (CRTC) regulate the use of mobile
communications systems — such as two-way radios, telephones and
theft alarms - that are equipped with radio transmitters. Any such
equipment installed in your vehicle should comply with FCC or CRTC
regulations and should be installed only by a qualified service
technician.
•Mobile communications systems may harm the operation of your
vehicle, particularly if they are not properly designed for automotive
use.
•To avoid interference with other vehicle functions, such as anti-lock
braking systems, amateur radio users who install radios and antennas
onto their vehicle should not locate the Amateur Radio Antennas in
the area of the driver’s side hood.
•Electrical or electronic accessories or components that are added to
the vehicle by the dealer or the owner may adversely affect battery
performance and durability.
2006 Mark LT(mlt)
Owners Guide (post-2002-fmt)
USA(fus)
Accessories
245

A
Accessory delay ..........................42
Air cleaner filter ...............233–234
Air conditioning ..........................21
Airbag supplemental restraint
system ....................................97–98
and child safety seats ............100
description ................................98
disposal ....................................102
driver airbag ......................98, 100
indicator light .........................101
operation ...........................98, 100
passenger airbag ...............98, 100
Ambulance packages ....................7
Antifreeze
(see Engine coolant) ................212
Anti-lock brake system
(see Brakes) ..............................155
Audio system (see Radio) .........16
Automatic transmission
driving an automatic
overdrive .................................159
fluid, adding ............................229
fluid, checking ........................229
fluid, refill capacities ..............235
fluid, specification ..................239
Axle
lubricant specifications ..237, 239
refill capacities ........................235
traction lok ..............................157
B
Battery .......................................210
acid, treating emergencies .....210
jumping a disabled battery ....183
maintenance-free ....................210
replacement, specifications ...234servicing ..................................210
Bed extender ..............................61
Brakes ........................................155
anti-lock ...................................155
anti-lock brake system (ABS)
warning light ...........................155
fluid, checking and adding ....229
fluid, refill capacities ..............235
fluid, specifications .........237, 239
lubricant specifications ..237, 239
parking ....................................156
shift interlock ..........................157
Bulbs ............................................29
C
Capacities for refilling fluids ....235
Cell phone use ..............................7
Certification Label ....................241
Child safety restraints ..............105
child safety belts ....................105
Child safety seats ......................108
attaching with tether straps ..112
in front seat ............................109
in rear seat ..............................109
Cleaning your vehicle
engine compartment ..............200
instrument panel ....................201
interior .....................................202
interior trim ............................201
plastic parts ............................200
safety belts ..............................202
washing ....................................198
waxing .....................................198
wheels ......................................199
wiper blades ............................201
Climate control (see Air
conditioning or Heating) ............21
2006 Mark LT(mlt)
Owners Guide (post-2002-fmt)
USA(fus)
Index
246