2019 LINCOLN MKZ maintenance

Because your vehicle’s engine iselectronically-controlled by a computer,some engine control settings are maintainedby power from the battery. Some enginecomputer settings, like the idle trim and fueltrim strategy, optimize the driveability andperformance of the engine. The clock andradio station presets are also maintained inmemory by power from the low-voltagebattery. These settings are erased when atechnician disconnects and connects thelow-voltage battery.
To restore the settings, do the following:
Note:Until you switch the ignition to the onposition, you will receive a message in yourinformation display stating that your vehicleis not in park.
1. Apply the parking brake.
2. Shift into park (P) or neutral (N).
3. Switch off all accessories.
4. Press the brake pedal and start yourvehicle.
5. Run the engine until it reaches normaloperating temperature. While the engineis warming up, complete the following:Reset the clock. See Audio Unit (page391). Reset the power windowsbounce-back feature. See PowerWindows (page 95). Reset the radiostation presets. See Audio Unit (page391).
6. Allow the engine to idle for at least oneminute.
7.Drive the vehicle at least 10 mi (16 km) tocompletely relearn the idle trim and fueltrim strategy.
Note:If you do not allow the engine torelearn the idle and fuel trim strategy, theidle quality of your vehicle may be adverselyaffected until the engine computereventually relearns the idle trim and fuel trimstrategy.
Note:Certain features may not operate ifthe battery monitor system is not reset witha scan tool following a jump start or batteryreplacement. Normal electrical accessoryoperation should resume after your vehicleis left undisturbed for 8 hours.
Make sure that you dispose of old batteriesin an environmentally friendly way. Seekadvice from your local authority aboutrecycling old batteries.
If storing your vehicle for more than 30 dayswithout recharging the battery, werecommend that you disconnect the batterycables to maintain battery charge for quickstarting.
CHECKING THE WIPER BLADES
Run the tip of your fingers over the edge ofthe blade to check for roughness.
Clean the wiper blades with washer fluid orwater applied with a soft sponge or cloth.
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CHANGING THE WIPER BLADES
Replace the wiper blades at least annuallyfor optimum performance.
You can improve poor wiper quality bycleaning the wiper blades and thewindshield.
Note:Do not hold the wiper blade whenlifting the wiper arm.
Note:Make sure that the wiper arm doesnot spring back against the glass when thewiper blade is not attached.
1. Pull the wiper blade and arm away fromthe glass. Press the locking buttonstogether.
2. Slightly rotate the wiper blade.
3. Remove the wiper blade.
4. Install in the reverse order.
Note:Make sure that the wiper blade locksinto place.
ADJUSTING THE HEADLAMPS
Vertical Aim Adjustment
The headlamps on your vehicle are properlyaimed at the assembly plant. If your vehiclehas been in an accident, the alignment ofyour headlamps should be checked by yourauthorized dealer.
Headlamp Aiming Target
8 feet (2.4 meters)A
Center height of lamp to groundB
25 feet (7.6 meters)C
Horizontal reference lineD
Vertical Aim Adjustment Procedure
1.Park the vehicle directly in front of a wallor screen on a level surface,approximately 25 ft (7.6 m) away.
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2.Measure the height of the headlamp bulbcenter from the ground and mark an 8 ft(2.4 m) horizontal reference line on thevertical wall or screen at this height.
Note:To see a clearer light pattern foradjusting, you may want to block the lightfrom one headlamp while adjusting theother.
3. Turn on the low beam headlamps toilluminate the wall or screen and openthe hood.
4.On the wall or screen you will observe aflat zone of high intensity light located atthe top of the right hand portion of thebeam pattern. If the top edge of the highintensity light zone is not at the horizontalreference line, the headlamp will needto be adjusted.
5. Locate the vertical adjuster on eachheadlamp. Using a Phillips #2screwdriver, turn the adjuster eitherclockwise or counterclockwise in orderto adjust the vertical aim of theheadlamp. The horizontal edge of thebrighter light should touch the horizontalreference line.
6. Close the hood and turn off the lamps.
Horizontal Aim Adjustment
The horizontal aim does not require anyadjustment for this vehicle. If a fault occurs,have the system checked by an authorizeddealer.
CHANGING A BULB
Replacing Bulbs
For replacing bulbs, see your authorizeddealer.
CHANGING THE ENGINE AIR
FILTER
WARNING: Do not start the engine withthe air filter removed. This can causedamage not covered by the vehicle Warrantyand can result in serious injury.
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Only use the specified replacement air filter.See Capacities and Specifications (page366).
Change the air filter element at the correctinterval. See Scheduled Maintenance (page504).
When changing the engine air filter, do notallow debris or foreign material to enter theair induction system. The engine andturbocharger are susceptible to damage fromeven small particles.
Note:Failure to use the correct air filterelement may result in severe enginedamage. Resulting component damage maynot be covered by the vehicle Warranty.
1. Release the clamps that secure the airfilter cover to the housing.
2. Carefully lift the air filter housing cover.
3.Remove the air filter element from the airfilter housing.
4. Wipe any dirt or debris from the air filterhousing and cover to make sure no dirtgets in the engine and that you have agood seal.
5.Install a new air filter element. Be carefulnot to crimp the filter element edgesbetween the air filter housing and cover. This could cause filter damage and allowunfiltered air to enter the engine if it isnot properly seated.
6. Install the air filter housing cover.
7. Engage the clips to secure the air filterhousing cover to the air filter housing.
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VEHICLE STORAGE
If you plan on storing your vehicle for 30days or more, read the followingmaintenance recommendations to make sureyour vehicle stays in good operatingcondition.
We engineer and test all motor vehicles andtheir components for reliable, regular driving.Under various conditions, long-term storagemay lead to degraded engine performanceor failure unless you use specific precautionsto preserve engine components.
General
•Store all vehicles in a dry, ventilatedplace.
•Protect from sunlight, if possible.
•If vehicles are stored outside, theyrequire regular maintenance to protectagainst rust and damage.
Body
•Wash your vehicle thoroughly to removedirt, grease, oil, tar or mud from exteriorsurfaces, rear-wheel housing and theunderside of front fenders.
•Periodically wash your vehicle if it isstored in exposed locations.
•Touch-up exposed or primed metal toprevent rust.
•Cover chrome and stainless steel partswith a thick coat of auto wax to preventdiscoloration. Re-wax as necessary whenyou wash your vehicle.
•Lubricate all hood, door and luggagecompartment hinges and latches with alight grade oil.
•Cover interior trim to prevent fading.
•Keep all rubber parts free from oil andsolvents.
Engine
•Change the engine oil and filter prior tostorage because used engine oil containscontaminates which may cause enginedamage.
•Start the engine every 15 days for aminimum of 15 minutes. Run at fast idlewith the climate controls set to defrostuntil the engine reaches normaloperating temperature.
•With your foot on the brake, shift throughall the gears while the engine is running.
•We recommend that you change theengine oil before you use your vehicleagain.
Fuel system
•Fill the fuel tank with high-quality fueluntil the first automatic shutoff of the fuelpump nozzle.
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Vehicle Care

TIRE SEALANT AND INFLATOR KIT
(If Equipped)
Note:The temporary mobility kit (TMK)contains enough sealant compound for onetire repair. See your authorized dealer forreplacement sealant bottles after the TMKis used. Only use the kit supplied with yourvehicle.
Note:The kit may be used as an aircompressor for tire inflation maintenance byturning the selector switch to the Air position.
Your TMK is located under the load floor inthe trunk. The TMK consists of an aircompressor to re-inflate the tire with a bottleof sealing compound that seals puncturescaused by most nails or similar objects. Thiskit provides a temporary tire repair allowingyou to drive your vehicle up to 120 mi(200 km) at a maximum speed of 50 mph(80 km/h) to reach a tire service location.
Air compressor (inside)A
Selector switchB
On and off buttonC
Air pressure gaugeD
Sealant bottleE
Dual purpose hose: air and repairF
Tire valve connectorG
Accessory power plugH
Casing/housingI
Bike/raft/sports ball adaptersJ
Pressure release valveK
General Information
WARNING: Failure to follow theseguidelines could result in an increased riskof loss of vehicle control, injury or death.
Note:Do not use the kit if a tire has becomeseverely damaged. Only punctures locatedwithin the tire tread can be sealed with thekit.
Do not attempt to repair punctures largerthan ¼ inch (6 millimeters) or damage to thetire's sidewall. The tire may not seal.
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7. Check the sidewalls to make surethere are no gouges, cuts or bulges.
Inspecting Your Tires and Wheel ValveStems
Periodically inspect the tire treads foruneven or excessive wear and removeobjects such as stones, nails or glassthat may be wedged in the treadgrooves. Check the tire and valve stemsfor holes, cracks, or cuts that may permitair leakage and repair or replace the tireand replace the valve stem. Inspect thetire sidewalls for cracking, cuts, bruisesand other signs of damage or excessivewear. If internal damage to the tire issuspected, have the tire demounted andinspected in case it needs to be repairedor replaced. For your safety, tires that
are damaged or show signs of excessivewear should not be used because theyare more likely to blow out or fail.
Improper or inadequate vehiclemaintenance can cause tires to wearabnormally. Inspect all your tires,including the spare, frequently, andreplace them if one or more of thefollowing conditions exist:
Tire Wear
When the tread is worn down to 0.08 in(2 mm), tires must be replaced to helpprevent your vehicle from skidding andhydroplaning. Built-in treadwearindicators, or wear bars, which look likenarrow strips of smooth rubber acrossthe tread will appear on the tire whenthe tread is worn down to 0.08 in(2 mm).
When the tire tread wears down to thesame height as these wear bars, the tireis worn out and must be replaced.
Damage
Periodically inspect the tire treads andsidewalls for damage (such as bulges inthe tread or sidewalls, cracks in thetread groove and separation in the tread
or sidewall). If damage is observed orsuspected have the tire inspected by atire professional. Tires can be damagedduring off-road use, so inspection afteroff-road use is also recommended.
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Rotating your tires at the recommendedinterval (as indicated in the ScheduledMaintenance chapter) will help your tireswear more evenly, providing better tireperformance and longer tire life.
Front-wheel drive and all-wheel drivevehicles (front tires on the left side ofthe diagram)
All vehicles with directional tires (fronttires on the left of the diagram)
Sometimes irregular tire wear can becorrected by rotating the tires.
USING SUMMER TIRES
Summer tires provide superior performanceon wet and dry roads. Summer tires do nothave the Mud and Snow (M+S or M/S) tiretraction rating on the tire side wall. Sincesummer tires do not have the same tractionperformance as All-season or Snow tires, wedo not recommend using summer tires whentemperatures drop to approximately 45°F(7°C) or below (depending on tire wear andenvironmental conditions) or in snow and ice
conditions. Like any tire, summer tireperformance is affected by tire wear andenvironmental conditions. If you must drivein those conditions, we recommend usingMud and Snow (M+S, M/S), All-season orSnow tires.
Always store your summer tires indoors attemperatures above 19°F (-7°C). The rubbercompounds used in these tires lose flexibilityand may develop surface cracks in the treadarea at temperatures below 19°F (-7°C). If thetires have been subjected to 19°F (-7°C) orless, warm them in a heated space to at least41°F (5°C) for at least 24 hours beforeinstalling them on a vehicle, or moving thevehicle with the tires installed, or checkingtire inflation. Do not place tires near heatersor heating devices used to warm the roomwhere the tires are stored. Do not apply heator blow heated air directly on the tires.Always inspect the tires after storage periodsand before use.
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