Maintenance
Action
Message
Stop the vehicle as soon as safely possible, turn off the engine. Check the oil level. If the warningstays on or continues to come on with your engine running, contact your \
authorized dealer as soon as possible.
LOW Engine Oil Pressure
Displayed when the engine oil life remaining is 10% or less. See Engine Oil Check (page 288).
Change Engine Oil Soon
Displayed when the oil life left reaches 0%.
See Engine Oil Check (page 288).
Oil Change Required
Indicates the brake fluid level is low and the brake system should be inspected immediately.See
Brake Fluid Check (page 294).
Brake Fluid Level LOW
Displays when the brake system needs servicing. Stop the vehicle in a safe place. Contact your authorized dealer.
Check Brake System
Displays when the engine coolant temperature is excessively high. Stop the vehicle in a safeplace and contact your authorized dealer.
Engine Coolant Overtemperature
Displays when the motor electronics are overheating. Stop the vehicle as soon as safely possible,
turn off the vehicle and let it cool. If the warning stays on or continu\
es to come on, contact yourauthorized dealer as soon as possible.
Motor Coolant Overtemperature
Displays when the washer fluid is low and needs to be refilled.
Washer Fluid Level Low
Displays when the engine has reduced power in order to help reduce high \
coolant temperatures.
Power Reduced to Lower Engine Temp
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MKZ Hybrid (), enUSA Information Displays
Answer
Question
Your vehicle's engine and transmission are designed to deliver thepower you need at the most efficient engine speed. This may be
higher than expected during heavy accelerations, and may fluctuate
during steady state driving. These are characteristics of the Atkinson engine cycle and the transmission technology that help maximize your hybrid's fuel economy.
Why does my engine rev up so high sometimes when I accelerate?
The fan noise comes from a fan located outside the high voltage
battery. This fan turns on when the battery requires cooling air. The
fan speed, and associated noise level, will change according to the
amount of cooling required to maintain good performance. Maintaining
the battery temperature at optimal conditions also prolongs the useful life of the battery and helps to achieve better fuel economy. Do not
place objects on the package tray which could block air flow through the hybrid vehicle battery cooling vents.
What is the fan noise I hear from the rear of my hybrid?
Running out of gas is not recommended. However, you may be ableto go about one mile, driving at 30 mph (48 km/h), if the battery has a normal state of charge.
How far can I go in Electric Drive if I run out of gas?
Change the engine oil every 10000 miles (16000 km) under normaloperating conditions. See Scheduled Maintenance (page 468).
What is the engine oil change service interval?
Your hybrid vehicle can use E15 (15% ethanol, 85% gasoline) fuel, butyou may notice slightly reduced fuel economy because ethanol
contains less energy per gallon than gasoline. Your hybrid vehicle is not designed to use E85 (85% ethanol).
Can I put E15 or E85 in my vehicle, and how will it affect my fuel
economy?
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MKZ Hybrid (), enUSA Unique Driving Characteristics
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. Remove the filler cap.
2. Add engine oil that meets the Ford
specifications. See Capacities and
Specifications (page 346).
3. Replace the filler cap. Turn it until you feel a strong resistance. ENGINE COOLANT CHECK
Engine Coolant and Inverter System
Controller Coolant
Your vehicle is equipped with two separate
cooling systems. One is for cooling the
engine and one is for cooling the inverter
system controller that is specific to the hybrid
operating system. The two systems operate
similarly, with the inverter system controller
cooling system generally operating at a lower
temperature and pressure.
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 468).
Note: Make sure that the level is between
the MIN and MAX marks on the engine
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 prediluted
coolant immediately. See
Adding Engine
Coolant in this chapter.
The coolant concentration should be
maintained 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
or antifreeze or windshield washer fluid
outside of its specified function and vehicle
location.
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MKZ Hybrid (), enUSA Maintenance
General
•
Store all vehicles in a dry, ventilated
place.
• Protect from sunlight, if possible.
• If vehicles are stored outside, they
require regular maintenance to protect
against rust and damage.
Body
• Wash your vehicle thoroughly to remove
dirt, grease, oil, tar or mud from exterior
surfaces, rear-wheel housing and the
underside of front fenders.
• Periodically wash your vehicle if it is
stored in exposed locations.
• Touch-up exposed or primed metal to
prevent rust.
• Cover chrome and stainless steel parts
with a thick coat of auto wax to prevent
discoloration. Re-wax as necessary when
you wash your vehicle.
• Lubricate all hood, door and trunk lid
hinges, and latches with a light grade oil. •
Cover interior trim to prevent fading.
• Keep all rubber parts free from oil and
solvents.
Engine
• The engine oil and filter should be
changed prior to storage because used
engine oil contains contaminates that
may cause engine damage.
• Start the engine every 15 days for a
minimum of 15 minutes. Run at fast idle
with the climate controls set to defrost
until the engine reaches normal
operating temperature.
• With your foot on the brake, shift through
all the gears while the engine is running.
• We recommend that you change the
engine oil before you use your vehicle
again.
Fuel system
• Fill the fuel tank with high-quality fuel
until the first automatic shutoff of the fuel
pump nozzle. Cooling system
•
Protect against freezing temperatures.
• When removing your vehicle from
storage, check coolant fluid level.
Confirm that there are no cooling system
leaks and that fluid is at the
recommended level.
Battery
• Check and recharge as necessary. Keep
connections clean.
• If storing your vehicle for more than 30
days without recharging the battery, we
recommend that you disconnect the
battery cables to maintain battery charge
for quick starting.
Note: It is necessary to reset memory
features if battery cables are disconnected.
Brakes
• Make sure the brakes and parking brake
release fully.
Tires
• Maintain recommended air pressure.
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MKZ Hybrid (), enUSA Vehicle Care
CAPACITIES AND SPECIFICATIONS - 2.0L HYBRID
Capacities
WARNING
The air conditioning refrigerant system contains refrigerant R-134a unde\
r high pressure. Opening the air conditioning refrigerant system
can cause personal injury. Have the air conditioning refrigerant system serviced only by qualifie\
d personnel.
Capacity
Item
4.5 qt (4.3 L)
Engine oil
7.4 qt (7 L)
Engine coolant
1.1 qt (1 L)
Inverter system coolant
Between MIN/MAX on brake fluid reservoir
Brake fluid
4.8 qt (4.5 L)
Automatic transmission fluid 1
Fill as required
Windshield washer fluid
13.5 gal (51.1 L)
Fuel tank
20 oz (0.57 kg)
A/C Refrigerant
5.2 fl oz (155 ml)
A/C Refrigerant Compressor Oil
1 Approximate dry fill capacity. Actual amount may vary during fluid changes.
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MKZ Hybrid (), enUSA Capacities and Specifications
Your vehicle is equipped with an information
display, which indicates the proper oil
change interval. This interval may be up to
one year or 10000 miles (16000 kilometers).
When ENGINE OIL CHANGE DUE or OIL
CHANGE REQUIRED appears in the
information display, it is time for an oil
change. Make sure you perform the oil
change within two weeks or 500 miles (800
kilometers) of the
ENGINE OIL CHANGE
DUE or OIL CHANGE REQUIRED message
appearing. Make sure you reset the oil
monitoring system after each oil change.
See
Engine Oil Check (page 288).
If your information display resets
prematurely, becomes inoperative or the
vehicle battery becomes discharged or
disconnected, the oil monitoring system
resets to 100% oil life. You should change
your engine oil one year or 10000 miles
(16000 kilometers) from the previous oil
change. Never exceed one year or 10000
miles (16000 kilometers) between oil change
intervals. Your vehicle is very sophisticated and built
with multiple, complex, performance systems.
Every manufacturer develops these systems
using different specifications and
performance features. That is why it is
important to rely upon your dealership to
properly diagnose and repair your vehicle.
Ford Motor Company has recommended
maintenance intervals for various parts and
component systems based upon engineering
testing. Ford Motor Company relies upon this
testing to determine the most appropriate
mileage for replacement of oils and fluids to
protect your vehicle at the lowest overall cost
to you and recommends against
maintenance schedules that deviate from
the scheduled maintenance information.
We strongly recommend the use of only
genuine Ford, Motorcraft or Ford-authorized
re-manufactured replacement parts
engineered for your vehicle.
Additives and Chemicals
This owner's manual and the Ford Workshop
Manual list the recommended additives and
chemicals for your vehicle. We do not
recommend using chemicals or additives not
approved by us as part of your vehicle
’s
normal maintenance. Please consult your
warranty information.
Oils, Fluids and Flushing
In many cases, fluid discoloration is a normal
operating characteristic and, by itself, does
not necessarily indicate a concern or that the
fluid needs to be changed. However, a
qualified expert, such as the factory-trained
technicians at your dealership, should
inspect discolored fluids that also show signs
of overheating or foreign material
contamination immediately.
469
MKZ Hybrid (), enUSA Scheduled Maintenance
Make sure to change your vehicle
’s oils and
fluids at the specified intervals or in
conjunction with a repair. Flushing is a viable
way to change fluid for many vehicle
sub-systems during scheduled maintenance. It is critical that systems are flushed only with
new fluid that is the same as that required
to fill and operate the system or using a
Ford-approved flushing chemical.
Owner Checks and Services
Make sure you perform the following basic
maintenance checks and inspections every
month or at six-month intervals. Check every month
Engine oil level.
Function of all interior and exterior lights.
Tires (including spare) for wear and proper pressure. Windshield washer fluid level. Check every six months
Battery connections. Clean if necessary.
Body and door drain holes for obstructions. Clean if necessary. Cooling system fluid level and coolant strength.
Door weatherstrips for wear. Lubricate if necessary.
Hinges, latches and outside locks for proper operation. Lubricate if necessary. Parking brake for proper operation.
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MKZ Hybrid (), enUSA Scheduled Maintenance
NORMAL SCHEDULED MAINTENANCE
Normal scheduled maintenance
1, 2
Change engine oil and filter. 3
Every 12 months or 10000
miles (16000 km). The oil
monitoring system displays
a message in the informa-
tion display. Rotate tires, inspect tire wear and measure tread depth.
Inspect automatic transmission fluid level. Consult dealer for requireme\
nts.
Inspect brake pads, shoes, rotors, drums, brake linings, hoses and parking brake.
Inspect engine cooling system and motor/electronics cooling system stren\
gth and hoses.
Inspect exhaust system and heat shields.
Inspect half-shaft boots.
Inspect steering linkage, ball joints, suspension and tie-rod ends.
Inspect wheels and related components for abnormal noise, wear, looseness or drag.
1 Do not exceed one year or 10000 miles (16000 kilometers) between service interv\
als.
2 Perform multi-point inspection (recommended).
3 Reset the oil monitoring system after engine oil and filter changes. See Engine Oil Check (page 288).
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MKZ Hybrid (), enUSA Scheduled Maintenance