steering LINCOLN NAVIGATOR 2018 Repair Manual

Before Towing a Trailer
Practice turning, stopping and backing up toget the feel of your vehicle-trailercombination before starting on a trip. Whenturning, make wider turns so the trailerwheels clear curbs and other obstacles.
When Towing a Trailer
•Do not drive faster than 70 mph(113 km/h) during the first 500 mi(800 km).
•Do not make full-throttle starts.
•Check your hitch, electrical connectionsand trailer wheel lug nuts thoroughly afteryou have traveled 50 mi (80 km).
•When stopped in congested or heavytraffic during hot weather, place thetransmission in park (P) to aid engine andtransmission cooling and to help A/Cperformance.
•Turn off the speed control when carryingheavy loads or in hilly terrain. The speedcontrol may turn off automatically whenyou are towing on long, steep grades.
•Shift to a lower gear when driving downa long or steep hill. Do not apply thebrakes continuously, as they mayoverheat and become less effective.
•If your transmission has a Grade Assistor Tow/Haul feature, use this featurewhen towing. This provides enginebraking and helps eliminate excessivetransmission shifting for optimum fueleconomy and transmission cooling.
•If your vehicle has AdvanceTrac withRSC, this system may turn on duringtypical cornering maneuvers with aheavily loaded trailer. This is normal.Turning the corner at a slower speedwhile towing may reduce this tendency.
•If your vehicle has Adaptive suspension,you can select NORMAL or SPORT drivecontrol modes for better experiencewhen towing a trailer. See InformationDisplays (page 119).
•If you are towing a trailer frequently inhot weather, hilly conditions, at the grosscombined weight rating (or anycombination of these factors), considerrefilling your rear axle with synthetic gearlubricant (if the axle is not already filledwith it). See Capacities andSpecifications (page 422).
•Allow more distance for stopping with atrailer attached. Anticipate stops andbrake gradually.
•Avoid parking on a grade. However, ifyou must park on a grade:
1. Turn the steering wheel to point yourvehicle tires away from traffic flow.
2. Set your vehicle parking brake.
3. Place the transmission in park (P).
4.Place wheel chocks in the front and backof the trailer wheels.
Note:Chocks are not included with yourvehicle.
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Towing

Your vehicle may be equipped with atemporary or conventional spare tire. Atemporary spare tire is different in size(diameter or width), tread-type (All-Seasonor All-Terrain) or is from a differentmanufacturer than the road tires on yourvehicle. Consult information on the tire labelor Safety Compliance label for limitationswhen using.
Launching or Retrieving a Boat orPersonal Watercraft (PWC)
Note:Disconnect the wiring to the trailerbefore backing the trailer into the water.
Note:Reconnect the wiring to the trailerafter removing the trailer from the water.
When backing down a ramp during boatlaunching or retrieval:
•Do not allow the static water level to riseabove the bottom edge of the rearbumper.
•Do not allow waves to break higher than6 in (15 cm) above the bottom edge ofthe rear bumper.
Exceeding these limits may allow water toenter vehicle components:
•Causing internal damage to thecomponents.
•Affecting driveability, emissions, andreliability.
Replace the rear axle lubricant anytime therear axle has been submerged in water.Water may have contaminated the rear axlelubricant, which is not normally checked orchanged unless a leak is suspected or otheraxle repair is required.
TOWING THE VEHICLE ON FOUR
WHEELS
WARNING: If your vehicle has asteering wheel lock make sure the ignitionis in the accessory or on position whenbeing towed.
Recreational Towing
Note:Put your climate control system inrecirculated air mode to prevent exhaustfumes from entering your vehicle. SeeClimate Control (page 151).
Follow these guidelines if you have a needfor recreational towing, such as towing yourvehicle behind a motorhome. Theseguidelines are designed to prevent damageto your transmission.
Two-wheel Drive Vehicles
You cannot tow a two-wheel drive vehiclewith any wheels on the ground as vehicle ortransmission damage may occur. You musttow your vehicle with all four wheels off theground, for example when using acar-hauling trailer.
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Towing

There are also some things you may want toavoid doing because they reduce your fueleconomy:
•Avoid sudden or hard accelerations.
•Avoid revving the engine before turningoff the car.
•Avoid long idle periods.
•Do not warm up your vehicle on coldmornings.
•Reduce the use of air conditioning andheat.
•Avoid using speed control in hilly terrain.
•Do not rest your foot on the brake pedalwhile driving.
•Avoid carrying unnecessary weight.
•Avoid adding particular accessories toyour vehicle (e.g. bug deflectors,rollbars/light bars, running boards, skiracks).
•Avoid driving with the wheels out ofalignment.
DRIVING THROUGH WATER
WARNING: Do not drive throughflowing or deep water as you may losecontrol of your vehicle.
Note:Driving through standing water cancause vehicle damage.
Note:Engine damage can occur if waterenters the air filter.
Before driving through standing water, checkthe depth. Never drive through water that ishigher than the bottom of the wheel hubs.
When driving through standing water, drivevery slowly and do not stop your vehicle.Your brake performance and traction maybe limited. After driving through water andas soon as it is safe to do so:
•Lightly press the brake pedal to dry thebrakes and to check that they work.
•Check that the horn works.
•Check that the exterior lights work.
•Turn the steering wheel to check that thesteering power assist works.
FLOOR MATS
WARNING: Use a floor mat designedto fit the footwell of your vehicle that doesnot obstruct the pedal area. Failure tofollow this instruction could result in theloss of control of your vehicle, personalinjury or death.
WARNING: Pedals that cannot movefreely can cause loss of vehicle control andincrease the risk of serious personal injury.
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Driving HintsE176913

Protected ComponentFuse RatingFuse
RH-LDM, LH-LDM.15A115Voltage quality module.Blindspot information system.Cruise control module.Tailgate applique.Image processing module B.
Powertrain control module (PCM) run/start feed.10A116
Anti-lock brake system (ABS) run/start feed.10A117
Electronic power assist steering, run/start feed.10A118
Not used.—19
Front blower.40A220
Passenger seat motors.40A221
Not used.—22
Alternator A-line.10A123
Trailer brake control module.30A224
Body control module power 1.50A225
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Fuses

Protected ComponentFuse RatingFuse or Relay Number
Trailer brake controller (TBM).5A14
Revel II amplifier.20A15
Not used (spare).10A26
Not used (spare).10A27
Not used (spare).10A28
Rear seat entertainment module (RSEM).10A29Automatic heads up display.
Wireless accessory charger module (WACM).5A210Hands free liftgate module.Power liftgate module Logic (PLGM).
Combined sensor module (CSM).5A211Keypad.
Cluster.7.5A212Smart datalink connector Logic (SDLC).Electronic control panel (ECP).
Steering column control module (SCCM) (Logic).7.5A213Gear shift module (GSM).
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Fuses

Protected ComponentFuse RatingFuse or Relay Number
Run/start relay.30A134
Extended power mode module (EPM).5A135
Image processing module A (IPMA).15A136Automated Park Assist ModuleContinuous control damping module (CCD Module).
Heated steering wheel.20A137
Left rear power window.30A Circuit Breaker38Right rear power window.
1 Micro 2 fuse.2 Micro 3 fuse
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Fuses

Note:Do not remove the dipstick when theengine is running.
Note: If the oil level is between themaximum and minimum marks, the oil levelis acceptable. Do not add oil.
Note:The oil consumption of new enginesreaches its normal level after approximately3,000 mi (5,000 km).
Adding Engine Oil
WARNING: Do not remove the fillercap when the engine is running.
Do not use supplemental engine oil additivesbecause they are unnecessary and couldlead to engine damage that may not becovered by the vehicle Warranty.
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).
To top up the engine oil level do thefollowing:
1. Clean the area surrounding the engineoil filler cap before you remove it.
2. Remove the engine oil filler cap. SeeUnder Hood Overview (page 362). Turnit counterclockwise and remove it.
3. Add engine oil that meets ourspecifications. See Capacities andSpecifications (page 426). You may haveto use a funnel to pour the engine oil intothe opening.
4. Recheck the oil level.
5. If the oil level is correct, replace thedipstick and make sure it is fully seated.
6. Replace the engine oil filler cap. Turn itclockwise until you feel a strongresistance.
Note: Do not add oil further than themaximum mark. Oil levels above themaximum mark may cause engine damage.
Note:Make sure you install the oil filler capcorrectly.
Note:Soak up any spillage with anabsorbent cloth immediately.
OIL CHANGE INDICATOR RESET
Use the information display controls on thesteering wheel to reset the oil changeindicator.
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MaintenanceE142732

If you drive in extremely hot climates:
•You can decrease the coolantconcentration to 40%.
•Coolant concentrations below 40%decrease the freeze and corrosionprotection characteristics of the coolantand may cause engine damage.
Vehicles driven year-round in non-extremeclimates should use prediluted coolant foroptimum cooling system and engineprotection.
Coolant Change
At specific mileage intervals, as listed in thescheduled maintenance information, thecoolant should be changed. Add predilutedcoolant approved to the correct specification.See Capacities and Specifications (page422).
Fail-Safe Cooling
Fail-safe cooling allows you to temporarilydrive your vehicle before any incrementalcomponent damage occurs. The fail-safedistance depends on ambient temperature,vehicle load and terrain.
How Fail-Safe Cooling Works
If the engine begins to overheat,the coolant temperature gaugemoves toward the red zone:
A warning lamp illuminates and amessage may appear in theinformation display.
If the engine reaches a presetover-temperature condition, the engineautomatically switches to alternating cylinderoperation. Each disabled cylinder acts as anair pump and cools the engine.
When this occurs, your vehicle still operates,however:
•Engine power is limited.
•The air conditioning system turns off.
Continued operation increases the enginetemperature, causing the engine tocompletely shut down. Your steering andbraking effort increases in this situation.
When the engine temperature cools, you canre-start the engine. Have your vehiclechecked as soon as possible to minimizeengine damage.
When Fail-Safe Mode Is Activated
WARNING: Fail-safe mode is for useduring emergencies only. Operate yourvehicle in fail-safe mode only as long asnecessary to bring your vehicle to rest ina safe location and seek immediate repairs.When in fail-safe mode, your vehicle willhave limited power, will not be able tomaintain high-speed operation, and maycompletely shut down without warning,potentially losing engine power, powersteering assist, and power brake assist,which may increase the possibility of acrash resulting in serious injury.
WARNING: Do not remove thecoolant reservoir cap when the coolingsystem is hot. Wait 10 minutes for thecooling system to cool down. Cover thecoolant reservoir cap with a thick cloth toprevent the possibility of scalding andslowly remove the cap. Failure to followthis instruction could result in personalinjury.
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Maintenance

Note:For flexible fuel vehicles, if you areoperating on E85, you may experience poorstarts or an inability to start the engine anddriveability problems until the fuel trim andethanol content have been relearned.
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 negativebattery cable to maintain battery charge forquick starting.
Battery Management System (If Equipped)
The battery management system monitorsbattery conditions and takes actions toextend battery life. If excessive battery drainis detected, the system temporarily disablessome electrical systems to protect thebattery.
Systems included are:
•Heated rear window.
•Heated seats.
•Climate control.
•Heated steering wheel.
•Audio unit.
•Navigation system.
A message may appear in the informationdisplays to alert you that battery protectionactions are active. These messages are onlyfor notification that an action is taking place,and not intended to indicate an electricalproblem or that the battery requiresreplacement.
After battery replacement, or in some casesafter charging the battery with an externalcharger, the battery management systemrequires eight hours of vehicle sleep time torelearn the battery state of charge. Duringthis time your vehicle must remain fullylocked with the ignition switched off.
Note:Prior to relearning the battery state ofcharge, the battery management systemmay temporarily disable some electricalsystems.
Electrical Accessory Installation
To make sure the battery managementsystem works correctly, do not connect anelectrical device ground connection directlyto the battery negative post. This can causeinaccurate measurements of the batterycondition and potential incorrect systemoperation.
Note:If you add electrical accessories orcomponents to the vehicle, it may adverselyaffect battery performance and durability.This may also affect the performance ofother electrical systems in the vehicle.
CHECKING THE WIPER BLADES
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MaintenanceE142463

CLEANING THE INSTRUMENT
PANEL AND INSTRUMENT
CLUSTER LENS
WARNING: Do not use chemicalsolvents or strong detergents whencleaning the steering wheel or instrumentpanel to avoid contamination of the airbagsystem.
Note:Follow the same procedure ascleaning leather seats for cleaning leatherinstrument panels and leather interior trimsurfaces. See Cleaning Leather Seats (page388).
Clean the instrument panel and cluster lenswith a clean, damp and soft cloth, then usea clean, dry and soft cloth to dry these areas.
•Avoid cleaners or polishes that increasethe gloss of the upper portion of theinstrument panel. The dull finish in thisarea helps protect you from undesirablewindshield reflection.
•Do not use any household cleaningproducts or glass cleaners as these maydamage the finish of the instrumentpanel, interior trim and cluster lens.
•Wash or wipe your hands clean if youhave been in contact with certainproducts such as insect repellent andsuntan lotion to avoid possible damageto the interior painted surfaces.
•Do not allow air fresheners and handsanitizers to spill onto interior surfaces.If a spill occurs, wipe off immediately.Your warranty may not cover thesedamages.
If a staining liquid like coffee or juice hasbeen spilled on the instrument panel or oninterior trim surfaces:
1.Wipe up spilled liquid using a clean, softcloth as quickly as possible.
2. Use Motorcraft Premium Leather andVinyl Cleaner or a commercially availableleather cleaning product for automotiveinteriors. Test any cleaner or stainremover on an inconspicuous area.
3. Alternatively, wipe the surface with aclean, soft cloth and a mild soap andwater solution. Dry the area with a clean,soft cloth.
4.If necessary, apply more soap and watersolution or cleaning product to a clean,soft cloth and press it onto the soiledarea. Allow this to set at roomtemperature for 30 minutes.
5. Remove the soaked cloth, then with aclean, damp cloth, use a rubbing motionfor 60 seconds on the soiled area.
6. Dry the area with a clean, soft cloth.
CLEANING LEATHER SEATS
Note:Follow the same procedure ascleaning leather seats for cleaning leatherinstrument panels and leather interior trimsurfaces.
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Vehicle Care