LINCOLN MKS 2015 Owners Manual

UNDER HOOD OVERVIEW - 3.7L
Engine coolant reservoir. See Engine Coolant Check (page 240).
A.
Engine oil filler cap. See
Engine Oil Check (page 239).
B.
238
MKS (), enUSA MaintenanceE173333

Engine oil dipstick. See Engine Oil Dipstick (page 239).
C.
Brake fluid reservoir. See
Brake Fluid Check (page 247).
D.
Battery. See
Changing the 12V Battery (page 248).
E.
Power distribution box. See
Fuses (page 218).
F.
Air filter assembly. See
Changing the Engine Air Filter (page 255).
G.
Automatic transmission dipstick (under air filter assembly). See
Automatic Transmission Fluid Check (page 244).
H.
Windshield washer fluid reservoir. See
Washer Fluid Check (page 248).
I.
Engine Shield Some vehicles may be equipped with an
aero-shield under the engine. This shield
needs to be removed for service, including oil
and filter changes. The shield has four
quick-release fasteners to secure it in place. ENGINE OIL DIPSTICK
MINA
MAX
B ENGINE OIL CHECK
1. Make sure that your vehicle is on level
ground.
2. Switch the engine off and wait 15 minutes
for the oil to drain into the oil pan.
3. Set the parking brake and ensure the gearshift is in park (P).
4. Open the hood. Protect yourself from engine heat.
5. Locate and carefully remove the engine oil level dipstick.
See Under Hood
Overview (page 236).
239
MKS (), enUSA MaintenanceE173374 E146429

6.
Wipe the dipstick clean. Insert the dipstick
fully, then remove it again.
•If the oil level is between the lower
and upper holes, the oil level is
acceptable. DO NOT ADD OIL.
• If the oil level is below the lower hole,
add enough oil to raise the level within
the lower and upper holes.
• Oil levels above the upper hole may
cause engine damage. Some oil must
be removed from the engine by an
authorized dealer.
7. Put the oil level dipstick back into the oil dipstick tube and ensure it is fully seated.
Adding Engine Oil
Note: Do not remove the filler cap when the
engine is running.
Note: Do not remove the engine oil level
dipstick when the engine is running.
Note: Do not add oil further than the MAX
mark. Oil levels above the MAX mark may
cause engine damage. Only use oils certified for gasoline engines by
the American Petroleum Institute (API). An
oil with this trademark symbol conforms to
the current engine and emission system
protection standards and fuel economy
requirements of the International Lubricants
Specification Advisory Council (ILSAC),
comprised of U.S. and Japanese automobile
manufacturers.
1. Check the engine oil level.
2. If the engine oil level is not within the
normal range, add engine oil that meets
Ford specifications. See Capacities and
Specifications (page 290).
3. Remove the engine oil filler cap and use a funnel to pour the engine oil into the
opening. 4. Recheck the engine oil level. Make sure
the oil level is not above the normal
operating range on the engine oil level
dipstick.
5. Install the engine oil level dipstick and ensure it is fully seated.
6. Fully install the engine oil filler cap by turning the filler cap clockwise until three
clicks are heard or until the cap is fully
seated.
OIL CHANGE INDICATOR RESET
To reset the oil monitoring system after an
oil change, See General Information (page
88
).
ENGINE COOLANT CHECK WARNINGS
Do not add engine coolant when the
engine is hot. Steam and scalding
liquids released from a hot cooling
system can burn you badly. Also, spilling
coolant on hot engine parts can burn you.
240
MKS (), enUSA MaintenanceE142732

WARNINGS
Do not put engine coolant in the
windshield washer fluid container. If
sprayed on the windshield, engine
coolant could make it difficult to see through
the windshield. To reduce the risk of personal injury,
make sure the engine is cool before
unscrewing the coolant pressure relief
cap. The cooling system is under pressure.
Steam and hot liquid can come out forcefully
when you loosen the cap slightly. Do not add coolant further than the
MAX mark.
Checking the Engine Coolant
When the engine is cold, check the
concentration and level of the engine coolant
at the intervals listed in the scheduled
maintenance information. See Scheduled
Maintenance (page 392).
Note: Make sure that the coolant level is
between the MIN and MAX marks on the
coolant reservoir.
Note: Coolant expands when it is hot. The
level may extend beyond the MAX mark. Note:
If the level is at the MIN mark, below
the MIN mark, or empty, add coolant
immediately.
Maintain coolant concentration within 48%
to 50%, which equates to a freeze point
between -30°F (-34°C) and -34°F (-37°C).
Note: For best results, coolant concentration
should be tested with a refractometer such as
Robinair Coolant and Battery Refractometer
75240. We do not recommend the use of
hydrometers or coolant test strips for
measuring coolant concentrations.
Note: Automotive fluids are not
interchangeable. Do not use engine coolant,
antifreeze or windshield washer fluid outside
of its specified function and vehicle location.
Adding Engine Coolant
Note: Do not use stop leak pellets, cooling
system sealants or additives as they can cause
damage to the engine cooling or heating
systems. Your warranty may not cover these
damages.
Note: During normal vehicle operation, the
engine coolant may change color from orange
to pink or light red. As long as the engine coolant is clear and
uncontaminated, this color change does not
indicate that the engine coolant has
degraded, nor does it require that qualified
personnel drain the engine coolant, flush the
system or replace the engine coolant.
Do not mix different colors or types of coolant
in your vehicle. Mixing of engine coolants may
harm your engine
’s cooling system. The use
of an improper coolant may harm engine and
cooling system components and may void
the warranty. Use prediluted engine coolant
meeting the Ford specification. See
Capacities and Specifications (page 290).
In case of emergency, you can add a large
amount of water without engine coolant in
order to reach a vehicle service location. In
this instance, qualified personnel:
1. Must drain the cooling system.
2. Chemically clean the coolant system with
Motorcraft Premium Cooling System
Flush.
3. Refill with engine coolant as soon as possible.
Water alone, without engine coolant, can
cause engine damage from corrosion,
overheating or freezing.
241
MKS (), enUSA Maintenance

Do not use the following as a coolant
substitute:
•
Alcohol.
• Methanol.
• Brine.
• Any engine coolant mixed with alcohol
or methanol antifreeze or coolant.
Alcohol and other liquids can cause engine
damage from overheating or freezing.
Do not add extra inhibitors or additives to the
coolant. These can be harmful and
compromise the corrosion protection of the
engine coolant.
When adding coolant:
1. Unscrew the cap slowly. Any pressure will
escape as you unscrew the cap.
2. Add prediluted engine coolant meeting the Ford specification. See Capacities
and Specifications (page 290).
3. Check the coolant level in the coolant reservoir the next few times you drive your
vehicle.
4. If necessary, add enough prediluted engine coolant to bring the coolant level
to the proper level. Recycled Engine Coolant
Ford Motor Company does not recommend
the use of recycled engine coolant since a
Ford-approved recycling process is not yet
available.
Used engine coolant should be disposed of
in an appropriate manner. Follow your
community
’s regulations and standards for
recycling and disposing of automotive fluids.
Severe Climates
If you drive in extremely cold climates:
• It may be necessary to have a Ford
authorized dealer increase the coolant
concentration above 50%.
• A coolant concentration of 60% provides
improved freeze point protection. Engine
coolant concentrations above 60%
decrease the overheat protection
characteristics of the engine coolant and
may cause engine damage. If you drive in extremely hot climates:
•
It may be necessary to have a Ford
authorized dealer decrease the coolant
concentration to 40%.
• A coolant concentration of 40% provides
improved overheat protection. Engine
coolant concentrations below 40% will
decrease the freeze and corrosion
protection characteristics of the engine
coolant and may cause engine damage.
Vehicles driven year-round in non-extreme
climates should use prediluted engine
coolant for optimum cooling system and
engine protection.
What You Should Know About Fail-
Safe Cooling
If you deplete the engine coolant supply,
fail-safe cooling allows you to temporarily
drive your vehicle before you incur
incremental component damage. 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 and:
242
MKS (), enUSA Maintenance

the coolant temperature warning
light will illuminate
the service engine soon indicator
will illuminate.
If the engine reaches a preset
over-temperature condition, the engine
automatically switches to alternating cylinder
operation. Each disabled cylinder acts as an
air pump and cools the engine.
When this occurs, your vehicle will still
operate. However:
• The engine power will be limited.
• This will disable the air conditioning
system.
Continued operation increases the engine
temperature, causing the engine to
completely shut down. Your steering and
braking effort increases in this situation.
When the engine temperature cools, you can
re-start your engine. Take your vehicle to an
authorized dealer as soon as possible to
minimize engine damage. When Fail-Safe Mode Is Activated WARNINGS
Fail-safe mode is for use during
emergencies only. Operate your vehicle
in fail-safe mode only as long as
necessary to bring your vehicle to rest in a
safe location and seek immediate repairs.
When in fail-safe mode, your vehicle will have
limited power, will not be able to maintain
high-speed operation, and may completely
shut down without warning, potentially losing
engine power, power steering assist, and
power brake assist, which may increase the
possibility of a crash resulting in serious injury. Never remove the coolant reservoir cap
while the engine is running or hot.
You have limited engine power when in the
fail-safe mode, so drive your vehicle with
caution. Your vehicle will not maintain
high-speed operation and the engine will
operate poorly.
Remember that the engine is capable of
automatically shutting down to prevent
engine damage. In this situation:
1. Pull off the road as soon as safely
possible and switch off the engine.
2. Tow your vehicle to an authorized dealer. 3. If this is not possible, wait a short period
for the engine to cool.
4. Check the coolant level and add if low.
5. Re-start the engine and drive your vehicle
to an authorized dealer.
Note: Driving your vehicle without repair
increases the chance of engine damage.
Contact an authorized dealer as soon as
possible.
Engine Fluid Temperature Management
(If Equipped) WARNINGS
To reduce the risk of crash and injury,
be prepared that the vehicle speed may
reduce and the vehicle may not be able
to accelerate with full power until the fluid
temperatures reduce. Never remove the coolant reservoir cap
while the engine is running or hot.
Your vehicle can pull a trailer, but because
of the added load, your vehicle
’s engine may
temporarily reach higher temperatures during
severe operating conditions such as
ascending a long or steep grade while pulling
a trailer in high temperatures.
243
MKS (), enUSA Maintenance

At this time, you may notice your engine
coolant temperature gauge needle move
toward the H and the POWER REDUCED
TO LOWER TEMP message may appear in
the information display.
You may notice a reduction in vehicle speed
caused by reduced engine power. In order to
manage the engine fluid temperatures, your
vehicle may enter this mode if certain
high-temperature and high-load conditions
take place. The amount of speed reduction
depends on many factors such as vehicle
loading, towing, grade and ambient
temperature. If this occurs, there is no need
to pull off the road. You can continue to drive
your vehicle while this message is active.
The air conditioning may also cycle on and
off during severe operating conditions to
protect overheating of the engine. When the
engine coolant temperature decreases to a
normal operating temperature, the air
conditioning will turn on once again.
If the engine coolant temperature gauge
moves fully into the red (hot) area, or if the
coolant temperature warning or service
engine soon messages appear in your
information display:
1. Pull off the road as soon as safely possible and shift the transmission into
P
. 2.
Leave the engine running until the coolant
temperature gauge needle moves away
from the red (hot) area. After several
minutes, if the temperature does not
drop, follow the remaining steps.
3. Switch the engine off and wait for it to cool before checking the coolant level.
4. If the coolant level is normal, restart your
engine and continue.
5. If the coolant is low, add coolant, and restart the engine. See
Adding Engine
Coolant or How Fail-Safe Cooling
Works in this chapter for more
information.
AUTOMATIC TRANSMISSION
FLUID CHECK
6F50/6F55 Transmission
(If Equipped) WARNINGS
The dipstick cap and surrounding
components may be hot, use gloves.
Use gloves when moving the air filter
assembly. Components will be hot. Note:
Automatic transmission fluid expands
when warmed. To obtain an accurate fluid
check, drive your vehicle until you warm it up,
approximately
20 mi (30 km). If you operate
your vehicle for an extended period at high
speeds, in city traffic during hot weather or
pulling a trailer, switch your vehicle off until it
reaches normal operating temperatures to
allow the fluid to cool before checking.
Depending on vehicle use, cooling times could
take up to 30 minutes or longer.
Refer to your scheduled maintenance
information for scheduled intervals for fluid
checks and changes. Your transmission does
not consume fluid. However, you should
check the fluid level if the transmission is not
working properly. For example, if the
transmission slips or shifts slowly or if you
notice some sign of a fluid leak.
1. Drive your vehicle 20 mi (30 km) or until it reaches normal operating temperature.
2. Park your vehicle on a level surface and engage the parking brake.
3. With the parking brake engaged and your
foot on the brake pedal, start the engine
and move the gearshift lever through all
of the gear ranges. Allow a minimum of
10 seconds for each gear to engage.
4. Put the gearshift lever in park (P) and leave the engine running.
244
MKS (), enUSA Maintenance

Note:
For vehicles with the EcoBoost engine,
move the air filter assembly aside to access
the transmission dipstick. See Moving the Air
Filter Assembly for more information.
5. Remove the dipstick and wipe it clean with a dry, lint free clean rag. If necessary,
refer to the Under hood overview in this
chapter for the location of the dipstick.
6. Install the dipstick making sure you fully seat it in the filler tube by turning it to the
locked position.
7. Remove the dipstick and inspect the fluid
level. The fluid should be in the
designated areas for normal operating
temperature.
Moving the Air Filter Assembly
(Accessing the Dipstick) WARNING
Do not run engine with the air filter
disconnected.
1. Switch the engine off. 2. Clean the area around the clamp that
connects the air filter assembly to the
rubber hose and then loosen it.
3. Remove the bolt cover. 4.
Remove two bolts that attach the air filter
assembly to the front of the vehicle.
5. Remove the harness retaining clip by pulling up.
6. Do not disconnect the sensor.
245
MKS (), enUSA MaintenanceE173335
2
3 E173334
654

7. Pull the air filter assembly up to
disconnect it from the seated grommets
located under the air filter assembly.
8. Rotate the air filter assembly 90 degrees
counterclockwise. Make sure the rubber
hose is still connected to the air filter
assembly.
9. Tighten the clamp.
You can now access the transmission fluid
level indicator. Checking the fluid level
Low fluid level If the fluid level is below the MIN range of the
dipstick, add fluid to reach the hash mark
level.
Note:
If the fluid level is below the MIN level,
do not drive the vehicle. An underfill condition
may cause shift or engagement concerns or
possible damage.
Correct fluid level Check the transmission fluid at the normal
operating temperatures between 180°F
(82°C) and 200°F (93°C) on a level surface.
Drive your vehicle until you warm it up to the
normal operating temperature after
approximately 20 mi (30 km).
Target the transmission fluid level within the
cross-hatch area if at the normal operating
temperature between 180°F (82°C) and
200°F (93°C).
High fluid level If the fluid level is above the MAX range of
the dipstick, remove fluid to reach the
hashmark level.
246
MKS (), enUSA MaintenanceE173400 E158842 E158843 E158844

Note:
Fluid level above the MAX level may
cause shift or engagement concerns or
possible damage. An overheating condition
can cause high fluid levels. If you operate your
vehicle for an extended period at high speeds,
in city traffic during hot weather or pulling a
trailer, you should switch your vehicle off until
your vehicle reaches normal operating
temperatures. Depending on vehicle use,
cooling times could take up to 30 minutes or
longer.
Adjusting Automatic Transmission Fluid
Levels Before adding any fluid, make sure the correct
type is used. The type of fluid used is
normally indicated on the dipstick and in the
Technical Specifications section in this
chapter.
Note:
An overfill condition of transmission
fluid may cause shift or engagement concerns
or possible damage.
Do not use supplemental transmission fluid
additives, treatments or cleaning agents. The
use of these materials may affect
transmission operation and result in damage
to internal transmission components.
Reinstall the air filter assembly. After you
check the fluid level and adjust as necessary,
do the following:
1. Switch the engine off.
2. Loosen the clamp holding the air filter assembly to the rubber hose. 3. Seat the air filter assembly back into the
grommets by pushing down on the air
filter assembly.
4. Tighten the clamp.
5. Install and tighten the two bolts that attach the air filter assembly to the front
of the vehicle.
6. Install the bolt cover.
7. Reinstall the harness retaining clip into the front of the air filter assembly.
BRAKE FLUID CHECK
Fluid levels between the MIN and MAX lines
are within the normal operating range; there
is no need to add fluid. If the fluid levels are
outside of the normal operating range, the
performance of the system could be
compromised; seek service from your
authorized dealer immediately.
POWER STEERING FLUID CHECK
Your vehicle is equipped with an electric
power steering (EPS) system. There is no
fluid reservoir to check or fill.
247
MKS (), enUSA MaintenanceE158845 E158846