tires LINCOLN NAVIGATOR 2018 Service Manual

Each tire, including the spare (ifprovided), should be checkedmonthly when cold and inflated tothe inflation pressure recommended by thevehicle manufacturer on the vehicle placardor tire inflation pressure label. (If your vehiclehas tires of a different size than the sizeindicated on the vehicle placard or tireinflation pressure label, you shoulddetermine the proper tire inflation pressurefor those tires).
As an added safety feature, your vehicle hasbeen equipped with a Tire PressureMonitoring System (TPMS) that illuminates alow tire pressure telltale when one or moreof your tires is significantly under-inflated.Accordingly, when the low tire pressuretelltale illuminates, you should stop andcheck your tires as soon as possible, andinflate them to the proper pressure. Drivingon a significantly under-inflated tire causesthe tire to overheat and can lead to tirefailure. Under-inflation also reduces fuelefficiency and tire tread life, and may affectthe vehicle’s handling and stopping ability.
Please note that the TPMS is not a substitutefor proper tire maintenance, and it is thedriver’s responsibility to maintain correct tirepressure, even if under-inflation has notreached the level to trigger illumination ofthe TPMS low tire pressure telltale.
Your vehicle has also been equipped with aTPMS malfunction indicator to indicate whenthe system is not operating properly. TheTPMS malfunction indicator is combined withthe low tire pressure telltale. When thesystem detects a malfunction, the telltale willflash for approximately one minute and thenremain continuously illuminated. Thissequence will continue upon subsequentvehicle start-ups as long as the malfunctionexists.
When the malfunction indicator is illuminated,the system may not be able to detect orsignal low tire pressure as intended. TPMSmalfunctions may occur for a variety ofreasons, including the installation ofreplacement or alternate tires or wheels onthe vehicle that prevent the TPMS from
functioning properly. Always check the TPMSmalfunction telltale after replacing one ormore tires or wheels on your vehicle toensure that the replacement or alternate tiresand wheels allow the TPMS to continue tofunction properly.
This device complies with Part 15 of the FCCRules and with License exempt RSSStandards of Industry Canada. Operation issubject to the following two conditions:
1. This device may not cause harmfulinterference, and
2.This device must accept any interferencereceived, including interference that maycause undesired operation.
Note:Changes or modifications notexpressively approved by the partyresponsible for compliance could void theuser's authority to operate the equipment.The term "IC:" before the radio certificationnumber only signifies that Industry Canadatechnical specifications were met.
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Changing Tires With a Tire PressureMonitoring System
Note:Each road tire is equipped with a tirepressure sensor located inside the wheeland tire assembly cavity. The pressuresensor is attached to the valve stem. Thepressure sensor is covered by the tire andis not visible unless the tire is removed. Takecare when changing the tire to avoiddamaging the sensor.
You should always have your tires servicedby an authorized dealer.
Check the tire pressure periodically (at leastmonthly) using an accurate tire gauge. SeeWhen Inflating Your Tires in this chapter.
Understanding Your Tire PressureMonitoring System
The tire pressure monitoring systemmeasures pressure in your road tires andsends the tire pressure readings to yourvehicle. You can view the tire pressurereadings through the information display.See General Information (page 119). The lowtire pressure warning light will turn on if thetire pressure is significantly low. Once the
light is illuminated, your tires areunder-inflated and need to be inflated to themanufacturer’s recommended tire pressure.Even if the light turns on and a short timelater turns off, your tire pressure still needsto be checked.
When Your Temporary Spare Tire isInstalled
When one of your road tires needs to bereplaced with the temporary spare, thesystem will continue to identify an issue toremind you that the damaged road wheeland tire assembly needs to be repaired andput back on your vehicle.
To restore the full function of the tirepressure monitoring system, have thedamaged road wheel and tire assemblyrepaired and remounted on your vehicle.
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When You Believe Your System is NotOperating Properly
The main function of the tire pressuremonitoring system is to warn you when your
tires need air. It can also warn you in theevent the system is no longer capable offunctioning as intended. See the followingchart for information concerning your tirepressure monitoring system:
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Customer action requiredPossible causeLow tire pressure warning light
Make sure tires are at the proper pressure. See Inflating your tiresin this chapter. After inflating your tires to the manufacturer’srecommended pressure as shown on the Tire Label (located onthe edge of driver’s door or the B-Pillar), the vehicle must be drivenfor at least two minutes over 20 mph (32 km/h) before the lightturns off.
Tire(s) under-inflated
Solid warning lightRepair the damaged road wheel and tire assembly and reinstallit on the vehicle to restore system function. For a description onhow the system functions, see When Your Temporary Spare Tireis Installed in this section.
Spare tire in use
If the tires are properly inflated and the spare tire is not in use butthe light remains on, contact your authorized dealer as soon aspossible.TPMS malfunction
Repair the damaged road wheel and tire assembly and reinstallit on the vehicle to restore system function. For a description onhow the system functions, see When Your Temporary Spare Tireis Installed in this section.
Spare tire in use
Flashing warning light
If the tires are properly inflated and the spare tire is not in use butthe light remains on, contact your authorized dealer as soon aspossible.TPMS malfunction
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When Inflating Your Tires
WARNING: Do not use the tirepressure displayed in the informationdisplay as a tire pressure gauge. Failure tofollow this instruction could result inpersonal injury or death.
When putting air into your tires (such as at agas station or in your garage), the tirepressure monitoring system may not respondimmediately to the air added to your tires.
It may take up to two minutes of driving over20 mph (32 km/h) for the light to turn off afteryou have filled your tires to therecommended inflation pressure.
How Temperature Affects Your TirePressure
The tire pressure monitoring system monitorstire pressure in each pneumatic tire. Whiledriving in a normal manner, a typicalpassenger tire inflation pressure mayincrease about 2–4 psi (14–28 kPa) from acold start situation. If the vehicle is stationaryovernight with the outside temperature
significantly lower than the daytimetemperature, the tire pressure may decreaseabout 3 psi (21 kPa) for a drop of 30°F (17°C)in ambient temperature. This lower pressurevalue may be detected by the tire pressuremonitoring system as being significantlylower than the recommended inflationpressure and activate the system warninglight for low tire pressure. If the low tirepressure warning light is on, visually checkeach tire to verify that no tire is flat. If one ormore tires are flat, repair as necessary.Check the air pressure in the road tires. Ifany tire is under-inflated, carefully drive thevehicle to the nearest location where air canbe added to the tires. Inflate all the tires tothe recommended inflation pressure.
CHANGING A ROAD WHEEL
WARNING: If the tire pressuremonitor sensor becomes damaged it maynot function.
Note:You should only use tire sealants inroadside emergencies as they may causedamage to the tire pressure monitoringsystem sensor.
Note:The tire pressure monitoring systemindicator light illuminates when the sparetire is in use. To restore the full function ofthe monitoring system, all road wheelsequipped with tire pressure monitoringsensors must be mounted on this vehicle.
If you get a flat tire when driving, do notapply the brake heavily. Instead, graduallydecrease your speed. Hold the steeringwheel firmly and slowly move to a safe placeon the side of the road.
Have a flat serviced by an authorized dealerin order to prevent damage to the systemsensors. See Tire Pressure MonitoringSystem (page 409). Replace the spare tirewith a road tire as soon as possible. Duringrepairing or replacing of the flat tire, havethe authorized dealer inspect the systemsensor for damage.
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Dissimilar Spare Wheel and TireAssembly Information
WARNING: Failure to follow theseguidelines could result in an increased riskof loss of vehicle control, injury or death.
If you have a dissimilar spare wheel and tire,then it is intended for temporary use only.This means that if you need to use it, youshould replace it as soon as possible with aroad wheel and tire assembly that is thesame size and type as the road tires andwheels that were originally provided. If thedissimilar spare tire or wheel is damaged, itshould be replaced rather than repaired.
A dissimilar spare wheel and tire assemblyis defined as a spare wheel and tire assemblythat is different in brand, size or appearancefrom the road tires and wheels.
Full-size dissimilar spare
When driving with the full-size dissimilarspare wheel and tire assembly, do not:
•Exceed 70 mph (113 km/h).
•Use more than one dissimilar sparewheel and tire assembly at a time.
•Use snow chains on the end of thevehicle with the dissimilar spare wheeland tire assembly.
When driving with the full-size dissimilarspare wheel and tire assembly, it isrecommended that you do not:
•Exceed 50 mph (80 km/h) in 4WD.
•Engage 4WD unless the vehicle isstationary.
•Use 4WD on dry pavement.
The usage of a full-size dissimilar sparewheel and tire assembly can lead toimpairment of the following:
•Handling, stability and brakingperformance.
•Comfort and noise.
•Ground clearance and parking at curbs.
•Winter weather driving capability.
•Wet weather driving capability.
•Four-wheel driving capability.
When driving with the full-size dissimilarspare wheel and tire assembly additionalcaution should be given to:
•Towing a trailer.
•Driving vehicles equipped with a camperbody.
•Driving vehicles with a load on the cargorack.
Drive cautiously when using a full-sizedissimilar spare wheel and tire assembly andseek service as soon as possible.
Location of the Spare Tire and Tools
The spare tire is located under the vehicle,just forward of the rear bumper. The jack,swivel wrench and lug wrench are in thefollowing locations:
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LocationItem
Under the vehicle, just forward of the rear bumperSpare tire
Under the access panel located in the floor compartment behind therear seatJack and tool kit bag
Tire Change Procedure
WARNING: Only use replacementtires and wheels that are the same size,load index, speed rating and type (such asP-metric versus LT-metric or all-seasonversus all-terrain) as those originallyprovided by Ford. The recommended tireand wheel size may be found on either theSafety Compliance Certification Label(affixed to either the door hinge pillar,door-latch post, or the door edge thatmeets the door-latch post, next to thedriver's seating position), or the Tire Labelwhich is located on the B-Pillar or edge ofthe driver's door. If this information is notfound on these labels, then you shouldcontact your authorized dealer as soon as
possible. Use of any tire or wheel notrecommended by Ford can affect thesafety and performance of your vehicle,which could result in an increased risk ofloss of vehicle control, vehicle rollover,personal injury and death.
WARNING: When one of the frontwheels is off the ground, the transmissionalone will not prevent the vehicle frommoving or slipping off the jack, even if thetransmission is in park (P).
WARNING: To help prevent yourvehicle from moving when changing awheel, shift the transmission into park (P),set the parking brake and use anappropriate block or wheel chock tosecure the wheel diagonally opposite tothe wheel being changed. For example,when changing the front left wheel, placean appropriate block or wheel chock onthe right rear wheel.
WARNING: Do not attempt to changea tire on the side of the vehicle close tomoving traffic. Pull far enough off the roadto avoid the danger of being hit whenoperating the jack or changing the wheel.
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WARNING: Always use the jackprovided as original equipment with yourvehicle. If using a jack other than the oneprovided, make sure the jack capacity isadequate for the vehicle weight, includingany vehicle cargo or modifications. If youare unsure if the jack capacity is adequate,contact the authorized dealer.
WARNING: Switch off the runningboards before jacking or placing any objectunder your vehicle. Never place your handbetween the extended running board andyour vehicle. A moving running board maycause injury.
WARNING: Only use the spare wheelcarrier to stow the wheel provided withyour vehicle. Other wheel sizes couldcause the spare wheel carrier to fail if itdoes not fit securely or is too heavy.
1.Park the vehicle on firm, level ground andactivate the hazard flashers.
2. Apply the parking brake, place thetransmission in park (P) and switch theignition off.
3.Block the wheels diagonally opposite theflat tire, for example, if the left front tireis flat, block the right rear wheel.
Removing the Jack and Tools
Note:Pay close attention to the orientationof the jack and tool kit bag, because it needsto be reinstalled after changing the tire.
1. Open the liftgate and lift the load floorbehind the third row seat. If your vehiclehas an access panel, you need to thenunlatch and remove this panel.
2. Remove the wing nut by turning itcounterclockwise.
3. Remove the jack and tool kit bag fromthe bracket, loosen the straps andremove the tool bag from the jack.
Removing the Spare Tire
1.Remove the swivel wrench from the toolkit bag, open the spare tire winch accessplug at the bottom of the compartmentfor the jack and tools tray.
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2. Insert the swivel wrench through theaccess hole in the floor to engage thewinch. Turn the handle counterclockwiseuntil the tire lowers to the ground andthe cable is slightly slack.
3. Slide the retainer through the center ofthe spare tire wheel and remove thespare tire.
Note:If your wheel nuts are hidden, thewheel cover or ornament must be removedusing the provided tool to access the wheelnuts.
4. Use the lug wrench tip to remove anywheel trim.
5. Loosen each wheel lug one-half turncounterclockwise, but do not removethem until the wheel is off the ground.
Jacking the Vehicle
WARNING: No person should placeany portion of their body under a vehiclethat is supported by a jack.
WARNING: Do not get under avehicle that is only supported by a vehiclejack.
WARNING: Check that the vehiclejack is not damaged or deformed and thethread is lubricated and clean.
WARNING: The jack supplied withthis vehicle is only intended for changingwheels. Do not use the vehicle jack otherthan when you are changing a wheel in anemergency.
WARNING: The jack should be usedon level firm ground wherever possible.
WARNING: Never place anythingbetween the vehicle jack and the ground.
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WARNING: Never place anythingbetween the vehicle jack and your vehicle.
WARNING: It is recommended thatthe wheels of the vehicle be chocked, andthat no person should remain in a vehiclethat is being jacked.
WARNING: Failure to follow theseguidelines could result in an increased riskof loss of vehicle control, injury or death.
Note:The jack does not requiremaintenance or additional lubrication overthe service life of your vehicle.
Note:Jack at the specified locations to avoiddamaging your vehicle.
1. Position the jack at the jacking pointindicator arrow closest to the flat tirelocation. Assemble the jack driveextension to the lug wrench as shownand use it to turn the jack drive clockwiseto raise the vehicle until the flat tire iscompletely off the ground.
Front jacking point
Rear jacking point
1.Remove the lug nuts with the lug wrench.Replace the flat tire with the spare tire,making sure the valve stem is facingoutward.
2. Reinstall the lug nuts until the wheel issnug against the hub. Do not fully tightenthe lug nuts until the wheel has beenlowered.
3. Completely lower the vehicle by turningthe jack drive counterclockwise.
4.Remove the jack and fully tighten the lugnuts in the order shown. See TechnicalSpecifications (page 420).
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