Page 305 of 494

CHANGING THE VEHICLE BATTERY
WARNING:Batteries normally produce explosive gases which
can cause personal injury. Therefore, do not allow flames, sparks
or lighted substances to come near the battery. When working near the
battery, always shield your face and protect your eyes. Always provide
proper ventilation.
WARNING:When lifting a plastic-cased battery, excessive
pressure on the end walls could cause acid to flow through the
vent caps, resulting in personal injury and/or damage to the vehicle or
battery. Lift the battery with a battery carrier or with your hands on
opposite corners.
WARNING:Keep batteries out of reach of children. Batteries
contain sulfuric acid. Avoid contact with skin, eyes or clothing.
Shield your eyes when working near the battery to protect against
possible splashing of acid solution. In case of acid contact with skin or
eyes, flush immediately with water for a minimum of 15 minutes and
get prompt medical attention. If acid is swallowed, call a physician
immediately.
WARNING:Battery posts, terminals and related accessories
contain lead and lead compounds. Wash hands after handling.
Your vehicle is equipped with a Motorcraftmaintenance-free battery
which normally does not require additional water during its life of
service.
Note:If your battery has a cover/shield, make sure it is reinstalled after
the battery has been cleaned or replaced.
For longer, trouble-free operation, keep the top of the battery clean and
dry. Also, make certain the battery cables are always tightly fastened to
the battery terminals.
If you see any corrosion on the battery or terminals, remove the cables
from the terminals and clean with a wire brush. You can neutralize the
acid with a solution of baking soda and water.
It is recommended that the negative battery cable terminal be
disconnected from the battery if you plan to store your vehicle for an
extended period of time.
Maintenance305
2013 MKT(mkt)
Owners Guide gf, 1st Printing
USA(fus)
Page 306 of 494

Battery relearn
Because your vehicle’s engine is electronically controlled by a computer,
some control conditions are maintained by power from the battery. When
the battery is disconnected or a new battery is installed, the engine must
relearn its idle and fuel trim strategy for optimum driveability and
performance. To begin this process:
1. With the vehicle at a complete stop, set the parking brake.
2. Put the gearshift lever in P (Park), turn off all accessories and start
the engine.
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. Drive the vehicle to complete the relearning process.
•The vehicle may need to be driven to relearn the idle and fuel trim
strategy.
•Note: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.
When the battery is disconnected or a new battery installed, the
transmission must relearn its adaptive strategy. As a result of this, the
transmission may shift firmly. This operation is considered normal and
will not affect function or durability of the transmission. Over time the
adaptive learning process will fully update transmission operation to its
optimum shift feel.
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.
306Maintenance
2013 MKT(mkt)
Owners Guide gf, 1st Printing
USA(fus)
Page 307 of 494
CHECKING THE WIPER BLADES
Run the tip of your fingers over the edge of the blade
to check for roughness.
Clean the wiper blades with washer fluid or water
applied with a soft sponge or cloth.
CHANGING THE WIPER BLADES
1. Pull the wiper blade and arm away
from the glass.
2. Squeeze the locking tabs to release the blade from the arm and pull
the blade away from the arm to remove it.
3. Attach the new blade to the arm and snap it into place.
Replace wiper blades at least once per year for optimum performance.
Poor wiper quality can be improved by cleaning the wiper blades and the
windshield.
To prolong the life of the wiper blades, it is highly recommended to
scrape off the ice on the windshield before turning on the wipers. The
layer of ice has many sharp edges and can damage the micro edge of the
wiper rubber element.
Maintenance307
2013 MKT(mkt)
Owners Guide gf, 1st Printing
USA(fus)
Page 308 of 494

Changing rear window wiper blade
To replace the rear wiper blade:
1. Grab the wiper arm with one
hand close to the arm/blade joint
and pull it as far away from the
glass as possible. Do not use
excessive force because it can break
the wiper arm at the heel. Hold it
there until the next step.
2. Grab the primary structure of the blade with the other hand close to
the arm/blade joint.
3. The wiper arm has a snap
retention feature to receive a cross
pin from the wiper blade structure.
Grip tightly and press on the
arm/blade joint from beneath and
separate the blade from the arm.
Avoid rotating the wiper blade structure and trapping your left hand
between the arm and blade.
4. Attach the new wiper to the wiper arm and press it into place until a
click is heard.
If you find this procedure too difficult, please see your dealer.
AIR FILTER CHECK
WARNING:To reduce the risk of vehicle damage and/or personal
burn injuries do not start your engine with the air cleaner
removed and do not remove it while the engine is running.
When changing the air filter element, use only the air filter element
listed. Refer toMotorcraftpart numbersin the Capacities and
Specifications chapter.
308Maintenance
2013 MKT(mkt)
Owners Guide gf, 1st Printing
USA(fus)
Page 309 of 494
For EcoBoost™ equipped vehicles: When servicing the air cleaner, it is
important that no foreign material enter the air induction system. The
engine and turbocharger are susceptible to damage from even small
particles.
Refer toScheduled Maintenancefor the appropriate intervals for
changing the air filter element.
Note:Failure to use the correct air filter element may result in severe
engine damage. The customer warranty may be void for any damage to
the engine if the correct air filter element is not used.
Changing the air filter element
3.7L V6/2.0L EcoBoost™ engine
3.5L V6 EcoBoost™ engine
Maintenance309
2013 MKT(mkt)
Owners Guide gf, 1st Printing
USA(fus)
Page 310 of 494

1. On the passenger’s side of the air filter housing, release the two
clamps from the air filter housing cover.
2. Lift the passenger’s side of the cover and push the
cover toward the passenger’s side. Release the three
tabs on the cover from the three slots in the driver’s
side of the housing.
3. Carefully separate the cover from the housing.
4. Remove the air filter element from the housing.
5. Wipe the cover and the housing clean to remove
any dirt or debris and to make sure the cover seals
to the housing.
6. Install a new air filter element. Be careful not to crimp the filter
element edges between the housing and the cover. This could cause filter
damage and allow unfiltered air to enter the engine if not properly
seated.
7. Lower the driver’s side of the cover and slide the three tabs on the
cover into the three slots in the housing.
8. Lower the passenger’s side of the cover. Engage the two clamps to
secure the cover to the housing.
ADJUSTING THE HEADLAMPS
The headlamps on your vehicle are properly aimed at the assembly plant.
If your vehicle has been in an accident, the alignment of your headlamps
should be checked by your authorized dealer.
Vertical aim adjustment
1. Park the vehicle directly in front of a wall or screen on a level surface,
approximately 25 feet (7.6 meters) away.
310Maintenance
2013 MKT(mkt)
Owners Guide gf, 1st Printing
USA(fus)
Page 311 of 494

•(1) 8 feet (2.4 meters)
•(2) Center height of lamp to
ground
•(3) 25 feet (7.6 meters)
•(4) Horizontal reference line
2. Measure the height of the
headlamp projector (cross hair mark
on inner lens) center from the
ground and mark an 8 foot
(2.4 meter) horizontal reference line
on the vertical wall or screen at this height (a piece of masking tape
works well).
3. Turn on the headlamps to illuminate the wall or screen and open the
hood.
To see a clearer light pattern for adjusting, you may want to block the
light from one headlamp while adjusting the other.
4. On the wall or screen you will
observe a light pattern with a
distinct horizontal edge towards the
right. If this edge is not at the
horizontal reference line, the beam
will need to be adjusted so the edge
is at the same height as the
horizontal reference line.
5. Locate the vertical adjuster on
each headlamp. Using a Phillips #2
screwdriver, turn the adjuster either
clockwise (to adjust down) or
counterclockwise (to adjust up).
The horizontal edge of the brighter
light should touch the horizontal
reference line. Close the hood and
turn off the lamps.
HORIZONTAL AIM IS NOT REQUIRED FOR THIS VEHICLE AND IS
NON-ADJUSTABLE.
Maintenance311
2013 MKT(mkt)
Owners Guide gf, 1st Printing
USA(fus)
Page 312 of 494

CHANGING A BULB
Lamp assembly condensation
Exterior lamps are vented to accommodate normal changes in pressure.
Condensation can be a natural by-product of this design. When moist air
enters the lamp assembly through the vents, there is a possibility that
condensation can occur when the temperature is cold. When normal
condensation occurs, a thin film of mist can form on the interior of the
lens. The thin mist eventually clears and exits through the vents during
normal operation. Clearing time may take as long as 48 hours under dry
weather conditions.
Examples of acceptable condensation are:
•Presence of thin mist (no streaks, drip marks or droplets)
•Fine mist covers less than 50% of the lens
Examples of unacceptable moisture (usually caused by a lamp water
leak) are:
•Water puddle inside the lamp
•Large water droplets, drip marks or streaks present on the interior of
the lens
Take your vehicle to a dealer for service if any of the above conditions of
unacceptable moisture are present.
Replacing HID headlamp bulbs
The headlamps on your vehicle use a “high intensity discharge” source.
These lamps operate at a high voltage. When the bulb is burned out, the
bulb and starter capsule assembly must be replaced by your authorized
dealer.
Replacing front parking lamp/turn signal bulbs
For bulb replacement, see your authorized dealer.
312Maintenance
2013 MKT(mkt)
Owners Guide gf, 1st Printing
USA(fus)