2018 LINCOLN MKZ HYBRID coolant reservoir

Engine coolant reservoir. See Engine Coolant Check (page 304).A
Engine oil filler cap. See Engine Oil Check (page 303).B
Air filter. See Changing the Engine Air Filter (page 317).C
Brake fluid reservoir. See Brake Fluid Check (page 309).D
Engine compartment fuse box. See Fuses (page 281).E
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MaintenanceA
IFGH
EBCD
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Inverter system controller.F
Inverter system controller coolant reservoir. See Engine Coolant Check (page 304).G
Engine oil dipstick. See Engine Oil Dipstick (page 303).H
Washer system fluid reservoir. See Washer Fluid Check (page 310).I
ENGINE OIL DIPSTICK
MINA
MAXB
ENGINE OIL CHECK
Note:Check the level before starting theengine.
Note:Make sure that the level is betweenthe MIN and the MAX marks.
1. Make sure that your vehicle is on levelground.
2. Turn the engine off and wait 10 minutesfor the oil to drain into the oil pan.
3. Remove the dipstick and wipe it with aclean, lint-free cloth. Replace the dipstickand remove it again to check the oil level.
If the level is at the MIN mark, add oilimmediately.
Adding Engine Oil
Note:Do not remove the filler cap when theengine is running.
Note:Do not add oil further than the MAXmark. Oil levels above the MAX mark maycause engine damage.
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MaintenanceE170468
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Only use oils certified for gasoline enginesby the American Petroleum Institute (API).An oil with this trademark symbol conformsto the current engine and emission systemprotection standards and fuel economyrequirements of the International LubricantsSpecification Advisory Committee (ILSAC).
1. Remove the filler cap.
2. Add engine oil that meets the Fordspecifications. See Capacities andSpecifications (page 358).
3. Replace the filler cap. Turn it until youfeel a strong resistance.
OIL CHANGE INDICATOR RESET
Use the information display controls on thesteering wheel to reset the oil changeindicator.
From the main menu scroll to:
Action and descriptionMessage
Press the right arrow button,then from this menu scroll tothe following message.
Settings
Press the right arrow button,then from this menu scroll tothe following message.
Vehicle
Press the right arrow button,then from this menu scroll tothe following message.
Oil Life
Press and hold the OK buttonuntil the instrument clusterdisplays the followingmessage.
Hold OK toReset
Reset Successful
When the oil change indicatorresets the instrument clusterdisplays 100%.
Remaining Life
{00}%
Action and descriptionMessage
If the instrument clusterdisplays one of the followingmessages, repeat theprocess.
Not Reset
Reset Cancelled
ENGINE COOLANT CHECK
WARNINGS
Never remove the coolant reservoircap when the engine is running or hot.
Do not put coolant in the windshieldwasher reservoir. If sprayed on thewindshield, coolant could make it difficult tosee through the windshield.
To reduce the risk of personal injury,make sure the engine is cool beforeunscrewing the coolant pressure relief cap.The cooling system is under pressure. Steamand hot liquid can come out forcefully whenyou loosen the cap slightly.
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Maintenance

WARNINGS
Do not add coolant further than theMAX mark.
Your vehicle has two separate coolingsystems. One for cooling the engine and aseparate system for cooling the invertersystem controller that is specific to the hybridoperating system. The two systems operatesimilarly, with the inverter system controllercooling system generally operating at a lowertemperature and pressure.
When the engine is cold, check theconcentration and level of the coolant at theintervals listed in the scheduled maintenanceinformation. See Scheduled Maintenance(page 489).
Note:Make sure that the coolant level isbetween the MIN and the MAX marks onthe coolant reservoir.
Note: Coolant expands when it is hot. Thelevel may extend beyond the MAX mark.
Maintain coolant concentration within 48%to 50%, which equates to a freeze pointbetween -30°F (-34°C) and -34°F (-37°C).Coolant concentration should be checkedusing a refractometer. We do not recommendthe use of hydrometers or coolant test stripsfor measuring coolant concentration.
Adding Coolant
WARNINGS
Do not add engine coolant when theengine is hot. Failure to follow thisinstruction could result in personal injury.
Never remove the coolant reservoircap when the engine is running or hot.
Note: Automotive fluids are notinterchangeable. Do not use coolant orwindshield washer fluid outside of itsspecified function and vehicle location.
Note: Do not use stop leak pellets, coolingsystem sealants, or non-specified additivesas they can cause damage to the enginecooling or heating systems. Resultingcomponent damage may not be covered bythe vehicle Warranty.
It is very important to use prediluted coolantapproved to the correct specification in orderto avoid plugging the small passageways inthe engine cooling system. See Capacitiesand Specifications (page 362). Do not mixdifferent colors or types of coolant in yourvehicle. Mixing of engine coolants or usingan incorrect coolant may harm the engine orcooling system components and may not becovered by the vehicle Warranty.
Note:If prediluted coolant is not available,use the approved concentrated coolantdiluting it to 50/50 with distilled water. SeeCapacities and Specifications (page 358).Using water that has not been deionizedmay contribute to deposit formation,corrosion and plugging of the small coolingsystem passageways.
Note: Coolants marketed for all makes andmodels may not be approved to Fordspecifications and may cause damage tothe cooling system. Resulting componentdamage may not be covered by the vehicleWarranty.
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Maintenance

If the coolant level is at or below theminimum mark, add prediluted coolantimmediately.
To top up the coolant level do the following:
1. Unscrew the cap slowly. Any pressureescapes as you unscrew the cap.
2. Add prediluted coolant approved to thecorrect specification. See Capacities andSpecifications (page 358).
3.Add enough prediluted coolant to reachthe correct level.
4. Replace the coolant reservoir cap, turnit clockwise until you feel a strongresistance.
5. Check the coolant level in the coolantreservoir the next few times you driveyour vehicle. If necessary, add enoughprediluted engine coolant to bring thecoolant level to the correct level.
If you have to add more than 1.1 qt (1 L) ofengine coolant per month, have your vehiclechecked as soon as possible. Operating anengine with a low level of coolant can resultin engine overheating and possible enginedamage.
Note:During normal vehicle operation, thecoolant may change color from orange topink or light red. As long as the coolant isclear and uncontaminated, this color changedoes not indicate the coolant has degradednor does it require the coolant to be drained,the system to be flushed, or the coolant tobe replaced.
In case of emergency, you can add a largeamount of water without engine coolant inorder to reach a vehicle service location. Inthis instance, qualified personnel:
1. Must drain the cooling system.
2. Chemically clean the cooling system.
3. Refill with prediluted coolant as soon aspossible.
Water alone, without coolant, can causeengine damage from corrosion, overheatingor freezing.
Do not use the following as a coolantsubstitute:
•Alcohol.
•Methanol.
•Brine.
•Any coolant mixed with alcohol ormethanol antifreeze.
Alcohol and other liquids can cause enginedamage from overheating or freezing.
Do not add extra inhibitors or additives tothe coolant. These can be harmful andcompromise the corrosion protection of thecoolant.
Recycled Coolant
We do not recommend the use of recycledcoolant as an approved recycling process isnot yet available.
Dispose of used engine coolant in anappropriate manner. Follow yourcommunity's regulations and standards forrecycling and disposing of automotive fluids.
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Maintenance

When Fail-Safe Mode Is Activated
WARNINGS
Fail-safe mode is for use duringemergencies only. Operate yourvehicle in fail-safe mode only as long asnecessary to bring your vehicle to rest in asafe location and seek immediate repairs.When in fail-safe mode, your vehicle will havelimited power, will not be able to maintainhigh-speed operation, and may completelyshut down without warning, potentially losingengine power, power steering assist, andpower brake assist, which may increase thepossibility of a crash resulting in seriousinjury.
Never remove the coolant reservoircap when the engine is running or hot.
Your vehicle has limited engine power whenin the fail-safe mode, drive your vehicle withcaution. Your vehicle does not maintainhigh-speed operation and the engine mayoperate poorly.
Remember that the engine is capable ofautomatically shutting down to preventengine damage. In this situation:
1. Pull off the road as soon as safelypossible and switch the engine off.
2. If you are a member of a roadsideassistance program, we recommend thatyou contact your roadside assistanceservice provider.
3.If this is not possible, wait a short periodfor the engine to cool.
4. Check the coolant level. If the coolantlevel is at or below the minimum mark,add prediluted coolant immediately.
5.When the engine temperature cools, youcan re-start the engine. Have your vehiclechecked as soon as possible to minimizeengine damage.
Note:Driving your vehicle without repairincreases the chance of engine damage.
Engine Coolant TemperatureManagement (If Equipped)
WARNING
To reduce the risk of crash and injury,be prepared that the vehicle speedmay reduce and the vehicle may not be ableto accelerate with full power until the coolanttemperature reduces.
If you tow a trailer with your vehicle, theengine may temporarily reach a highertemperature during severe operatingconditions, for example ascending a long orsteep grade in high ambient temperatures.
At this time, you may notice the coolanttemperature gauge moves toward the redzone and a message may appear in theinformation display.
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Maintenance

CAPACITIES AND SPECIFICATIONS
Capacities
WARNING
The air conditioning refrigerant system contains refrigerant under high pressure. Only qualified personnel should service the airconditioning refrigerant system. Opening the air conditioning refrigerant system can cause personal injury.
CapacityItem
4.5 qt (4.3 L)Engine oil (with oil filter).
8.9 qt (8.4 L)Engine coolant.
1.1 qt (1 L)Inverter system coolant.
Between MIN/MAX on brake fluid reservoirBrake fluid.
4.8 qt (4.5 L)*Automatic transmission fluid.
Fill as requiredWindshield washer fluid.
14.0 gal (53 L)Fuel tank.
18 oz (0.51 kg)A/C Refrigerant.
5.24 fl oz (155 ml)A/C Refrigerant Compressor Oil.
*Approximate dry fill capacity. Actual amount may vary during fluid changes.
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Capacities and Specifications

Multi-point Inspection
Tires for wear and proper pressure2Fluid levels1; fill if necessary
Windshield for cracks, chips or pitsFor oil and fluid leaks
Washer spray and wiper operationHalf-shaft dust boots
Hazard warning system operation
1 Brake, coolant recovery reservoir, automatic transmission and window washer2If your vehicle is equipped with a temporary mobility kit, check the tire sealant expiration Use By date on the canister. Replace as needed.
Be sure to ask your dealership serviceadvisor or technician about the multi-pointvehicle inspection. It is a comprehensive wayto perform a thorough inspection of yourvehicle. Your checklist gives you immediatefeedback on the overall condition of yourvehicle.
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Scheduled Maintenance