engine LINCOLN NAUTILUS 2023 Service Manual

Note:If the vehicle's battery has run out ofcharge, use an external power source toapply the parking brake.
3.Sit in the driver seat.
4.Press and hold the brake pedal. Do notstart your vehicle.
5.Pull the tether towards you to release thebead. Maintain tension. Center the tetherwithin the housing. Release tension andreturn tether to the stowed position.
6.Start your vehicle.
7.Confirm the instrument cluster displayspark (P).
Note:If the instrument cluster does notdisplay park (P) or if Park Not Available,Transmission Not In Park or Shift SystemFault message persists, contact anauthorized dealer for service.
8.Switch your vehicle off.
9.Release the brake pedal.
10.Install the access cover.
AUTOMATIC TRANSMISSION
AUDIBLE WARNINGS
Transmission Not In Park (P) AudibleWarning
Sounds if you open the driver door beforeshifting into park (P).
Park (P) Selection Audible Warning
Sounds when you shift into park (P).
AUTOMATIC TRANSMISSION –
TROUBLESHOOTING
AUTOMATIC TRANSMISSION –INFORMATION MESSAGES
You switched theengine off and shiftselect lever is in anyposition other thanpark (P).
Shift to Park
Transmission is toocold. Wait for it towarm up before youdrive.
TransmissionWarming Up PleaseWait
The transmission isoverheating andneeds to cool. Stopin a safe place assoon as it’s possible.
Transmission OverTemperature StopSafely
Have systemchecked as soon aspossible.
TransmissionService Required
218
2023 Nautilus (CD9) Canada/United States of America, enUSA, Edition date: 202207, DOMAutomatic Transmission

BRAKE PRECAUTIONS
Wet brakes result in reduced brakingefficiency. Gently press the brake pedal afew times when leaving a car wash or drivingfrom standing water to dry the brakes.
Note:Depending on applicable laws andregulations in the country where your vehiclewas originally built, the stoplamps could flashduring heavy braking. The hazard warningflashers could also turn on when your vehiclecomes to a stop.
ANTI-LOCK BRAKING SYSTEM
ANTI-LOCK BRAKING SYSTEMLIMITATIONS
The anti-lock braking system does noteliminate the risk of crash when:
•You drive too closely to the vehicle infront of you.
•Your vehicle is hydroplaning.
•You take corners too fast.
•The road surface is poor.
Note: If the system activates, the brakepedal could pulse and travel further. Maintain pressure on the brake pedal.
BRAKE OVER ACCELERATOR
In the event the accelerator pedal becomesstuck or entrapped, apply steady and firmpressure to the brake pedal to slow thevehicle and reduce engine power. If youexperience this condition, apply the brakesand bring your vehicle to a safe stop. Movethe transmission to park (P), switch theengine off and apply the parking brake.Inspect the accelerator pedal for anyinterference. If none are found and thecondition persists, have your vehicle towedto the nearest authorized dealer.
LOCATING THE BRAKE FLUID
RESERVOIR
See Under Hood Overview (page 343).
CHECKING THE BRAKE FLUID
WARNING: Do not use any fluid otherthan the recommended brake fluid as thiswill reduce brake efficiency. Use ofincorrect fluid could result in the loss ofvehicle control, serious personal injury ordeath.
WARNING: Only use brake fluid froma sealed container. Contamination with dirt,water, petroleum products or othermaterials may result in brake systemdamage or failure. Failure to adhere to thiswarning could result in the loss of vehiclecontrol, serious personal injury or death.
WARNING: Do not allow the fluid totouch your skin or eyes. If this happens,rinse the affected areas immediately withplenty of water and contact your physician.
WARNING: The brake system couldbe affected if the brake fluid level is belowthe MIN mark or above the MAX mark onthe brake fluid reservoir.
222
2023 Nautilus (CD9) Canada/United States of America, enUSA, Edition date: 202207, DOMBrakes

4.Press the accelerator pedal until enginehas developed sufficient torque toprevent your vehicle from rolling downthe hill.
5.Release the switch and pull away in anormal manner.
AUTOMATICALLY RELEASING THE
ELECTRIC PARKING BRAKE
1.Close the driver door.
2.Shift into gear.
3.Press the accelerator pedal and pull awayin a normal manner.
ELECTRIC PARKING BRAKE
AUDIBLE WARNING
Sounds when the parking brake is on andyour vehicle is moving. If the warning tonecontinues after you have released theparking brake, this indicates a malfunction.Have your vehicle checked as soon aspossible.
RELEASING THE ELECTRIC
PARKING BRAKE IF THE VEHICLE
BATTERY HAS RUN OUT OF
CHARGE
WARNING: The electric parkingbrake does not operate if the vehiclebattery has run out of charge.
Connect a booster battery to the vehiclebattery to release the electric parking brakeif the vehicle battery has run out of charge.See Jump Starting the Vehicle (page 319).
ELECTRIC PARKING BRAKE –
TROUBLESHOOTING
ELECTRIC PARKING BRAKE –WARNING LAMPS
Brake System
It illuminates red when you applythe parking brake and your vehicleis on. If the lamp flashes when theparking brake has been released,this indicates the parking brakesystem requires service. Have your vehiclechecked as soon as possible.
Note:Lamps may vary depending on region.
Electric Parking Brake
When the lamp illuminates yellow,it indicates a malfunction in theelectric parking brake. Have yourvehicle checked as soon as possible.
Note:Lamps may vary depending on region.
226
2023 Nautilus (CD9) Canada/United States of America, enUSA, Edition date: 202207, DOMElectric Parking BrakeE270480 E67024 E67024 E146190

ELECTRIC PARKING BRAKE – INFORMATION MESSAGES
Park Brake
ActionMessage
The electric parking brake is set, the engine is running and you drive your vehicle more than3 mph (5 km/h). If the warning stays on after the electric parking brake is released, have thesystem checked as soon as possible.
Park Brake Engaged
The electric parking brake is set and a manual release is attempted without the brake pedalbeing pressed.To Release: Press Brake and Switch
The electric parking brake is set and an automatic release is attempted but cannot be performed.Perform a manual release.Park Brake Use Switch to Release
The electric parking brake is set and your vehicle speed exceeds 3 mph (5 km/h). Release theelectric parking brake before continuing to drive.Release Park Brake
The electric parking brake is not fully applied.Park Brake Not Applied
The electric parking brake is not fully released.Park Brake Not Released
The electric parking brake system has been put into a special mode to allow brake service. Havethe system checked as soon as possible.Brake maintenance mode
The electric parking brake system has detected a condition that requires service. Some function-ality may still be available. Have the system checked as soon as possible.Park Brake Limited Function ServiceRequired
The electric parking brake system has detected a condition that requires service. Have thesystem checked as soon as possible.Park Brake Malfunction Service Now
227
2023 Nautilus (CD9) Canada/United States of America, enUSA, Edition date: 202207, DOMElectric Parking Brake

HOW DOES AUTO HOLD WORK
Auto hold applies the brakes to hold yourvehicle after you bring the vehicle to a stop.This can help when waiting on a hill or intraffic.
SWITCHING AUTO HOLD ON AND
OFF
WARNING: The system does notreplace the parking brake. When you leaveyour vehicle, always apply the parkingbrake.
WARNING: You must remain in yourvehicle when the system turns on. At alltimes, you are responsible for controllingyour vehicle, supervising the system andintervening, if required. Failure to take caremay result in the loss of control of yourvehicle, serious personal injury or death.
WARNING: The system will turn offif a malfunction is apparent. Failure to takecare may result in the loss of control ofyour vehicle, serious personal injury ordeath.
Select the drive assist menu in the centerdisplay screen to switch auto hold on andoff.
Note:You can only switch the system onafter you close the driver door and start theengine.
Note:The system remembers the last settingwhen you start your vehicle.
Make sure you switch the system off beforetowing with your vehicle or before using anautomatic car wash.
USING AUTO HOLD
1.Bring your vehicle to a complete stop.The auto hold active indicator illuminatesin the information display.
2.Release the brake pedal. The systemholds your vehicle at a standstill. Theauto hold active indicator remainsilluminated in the information display.
3.Apply the accelerator and drive off in anormal manner. The system releases thebrakes and the auto hold active indicatorswitches off.
Note:The system only activates if you applyenough brake pressure on the brake pedalto bring the vehicle to a standstill.
Note:Under certain conditions, the systemcould apply the electric parking brake. Thebrake system warning lamp illuminates. Theelectric parking brake releases when youpress the accelerator pedal. SeeAutomatically Releasing the ElectricParking Brake (page 226).
Note:The system switches off if you shiftinto reverse (R) or neutral (N) while pressingthe brake pedal.
230
2023 Nautilus (CD9) Canada/United States of America, enUSA, Edition date: 202207, DOMAuto Hold

HOW DOES STABILITY CONTROL
WORK
WARNING: Vehicle modificationsinvolving braking system, aftermarket roofracks, suspension, steering system, tireconstruction and wheel and tire size maychange the handling characteristics of yourvehicle and may adversely affect theperformance of the electronic stabilitycontrol system. In addition, installing anystereo loudspeakers may interfere withand adversely affect the electronic stabilitycontrol system. Install any aftermarketstereo loudspeaker as far as possible fromthe front center console, the tunnel, andthe front seats in order to minimize the riskof interfering with the electronic stabilitycontrol sensors. Reducing theeffectiveness of the electronic stabilitycontrol system could lead to an increasedrisk of loss of vehicle control, vehiclerollover, personal injury and death.
WARNING: Remember that evenadvanced technology cannot defy the lawsof physics. It's always possible to losecontrol of a vehicle due to inappropriatedriver input for the conditions. Aggressivedriving on any road condition can causeyou to lose control of your vehicleincreasing the risk of personal injury orproperty damage. Activation of theelectronic stability control system is anindication that at least some of the tireshave exceeded their ability to grip theroad; this could reduce the operator'sability to control the vehicle potentiallyresulting in a loss of vehicle control, vehiclerollover, personal injury and death. If yourelectronic stability control system activates,SLOW DOWN.
If a driving condition activates either thestability control or the traction control systemyou may experience the following conditions:
•The stability and traction control lightflashes.
•Your vehicle slows down.
•Reduced engine power.
The stability control system has severalfeatures built into it to help you maintaincontrol of your vehicle:
Electronic Stability Control
Electronic stability control enhances yourvehicle’s ability to prevent skids or lateralslides by applying brakes to one or more ofthe wheels individually and, if necessary,reducing engine power.
Roll Stability Control
Roll stability control enhances your vehicle’sability to prevent rollovers by detecting yourvehicle’s roll motion and the rate at which itchanges by applying the brakes to one ormore wheels individually.
233
2023 Nautilus (CD9) Canada/United States of America, enUSA, Edition date: 202207, DOMStability Control

Curve Control
Curve control enhances your vehicle’s abilityto follow the road when cornering severelyor avoiding objects in the roadway. Curvecontrol operates by reducing engine powerand, if necessary, applying brakes to one ormore of the wheels individually.
Traction Control
Traction control enhances your vehicle’sability to maintain traction of the wheels bydetecting and controlling wheel spin. SeeHow Does Traction Control Work (page 232).
Vehicle without stability controlskidding off its intended route.A
Vehicle with stability controlmaintaining control on a slipperysurface.
B
SWITCHING STABILITY CONTROL
ON AND OFF
The system turns on each time you switchthe ignition on.
You can switch the electronic stability controlsystem off by pressing and holding the ESCoff button for over 15 seconds, or you canpress the button again to switch the systemon.
Shifting the transmission intoreverse (R) disables the system.
You can switch the traction control systemoff or on independently. See SwitchingTraction Control On and Off (page 232).
STABILITY CONTROL INDICATOR
If it does not illuminate when youswitch the power on, or remainson, this indicates a malfunction. Have your vehicle checked by an authorizeddealer as soon as possible.
234
2023 Nautilus (CD9) Canada/United States of America, enUSA, Edition date: 202207, DOMStability ControlE72903 E130458 E138639

WHAT IS DRIVE MODE CONTROL
Your vehicle has various drive modes thatyou can select for different drivingconditions. Depending on the drive modethat you select, the system adjusts variousvehicle settings.
HOW DOES DRIVE MODE
CONTROL WORK
Drive mode control adjusts your vehicleconfiguration for each mode you select.
Changing the drive mode changes thefunctionality of the steering system to adjustthe steering effort and feel.
Active noise control utilizes your vehicleelectronics to enhance the acousticexperience.
The stability and traction control assist yourvehicle control in adverse conditions orhigh-performance driving.
Throttle control enhances the powertrainresponse, transmission controls becomeoptimized with shift schedules, andfour-wheel drive settings are optimized andtuned to each mode.
Note:The system has diagnostic checks thatcontinuously monitor the system for properoperation. If a mode is unavailable due to asystem fault, the mode defaults to normal.
SELECTING A DRIVE MODE
You can configure which of the drive controlmodes are active when your vehicle is indrive (D) or in sport (S). The configurationremains active until modified from the mainmenu on the instrument cluster display. SeeInstrument Cluster Display Main Menu(page 147).
Note:Not all settings may be available.
Note:Drive mode changes may not beavailable when the ignition is off.
DRIVE MODES
COMFORT
Provides a more relaxed driving experience,maximizing comfort. Your steering effortdecreases and the suspension movement ismore fluid. Comfort mode is ideal when youdesire enhanced traveling comfort.
NORMAL
Delivers a balanced combination of acomfortable, controlled ride and confidenthandling. This mode provides an engagingdriving experience and a direct connectionto the road without sacrificing any of thecomposure demanded from a luxury vehicle.
SPORT
Provides a sportier driving experience. Thesuspension stiffens, with an emphasis onhandling and control. The engine respondsmore directly to your inputs and takes on amore powerful tone. This mode is ideal foruse during more spirited driving.
270
2023 Nautilus (CD9) Canada/United States of America, enUSA, Edition date: 202207, DOMDrive Mode Control

TOWING A TRAILER PRECAUTIONS
WARNING: Do not exceed theGVWR or the GAWR specified on thecertification label.
WARNING: Towing trailersbeyond the maximum recommendedgross trailer weight exceeds the limitof your vehicle and could result inengine damage, transmission damage,structural damage, loss of vehiclecontrol, vehicle rollover and personalinjury.
WARNING: Do not exceed thelowest rating capacity for your vehicleor trailer hitch. Overloading yourvehicle or trailer hitch can impair yourvehicle stability and handling. Failureto follow this instruction could resultin the loss of control of your vehicle,personal injury or death.
WARNING: Make sure that thevertical load on the tow ball is betweenthe minimum and maximumrecommended weight at all times.Failure to follow this instruction couldresult in the loss of control of yourvehicle, personal injury or death.
WARNING: Do not cut, drill, weldor modify the trailer hitch. Modifyingthe trailer hitch could reduce the hitchrating.
WARNING: The anti-lock brakesystem does not control the trailerbrakes.
TRAILER BRAKE PRECAUTIONS
WARNING: Do not connect a trailer'shydraulic brake system directly to yourvehicle's brake system. Your vehicle maynot have enough braking power and yourchances of having a collision greatlyincrease.
WARNING: Do not tow a trailer fittedwith electric trailer brakes unless yourvehicle is fitted with a compatibleaftermarket electronic trailer brakecontroller. Failure to follow this instructioncould result in the loss of control of yourvehicle, personal injury or death. Foradditional information and assistance, werecommend that you contact an authorizeddealer.
Electric brakes and manual, automatic orsurge-type trailer brakes are safe if you installthem properly and adjust them to themanufacturer's specifications. The trailerbrakes must meet local and federalregulations.
307
2023 Nautilus (CD9) Canada/United States of America, enUSA, Edition date: 202207, DOMTowing a Trailer

The rating for the tow vehicle's brakingsystem operation is at the gross vehicleweight rating, not the gross combined weightrating.
Certain states require functioning trailerbrakes for trailers over a specified weight.Be sure to check state regulations for thisspecified weight.
Ford Motor Company recommends separatefunctioning brake systems for trailersweighing more than 1,500 lb (680 kg) whenloaded.
TOWING A TRAILER LIMITATIONS
The vehicle's load capacity designationis by weight, not by volume, so youcannot necessarily use all availablespace when loading a vehicle or trailer.
Note:Your vehicle could have reducedperformance when operating at highaltitudes and when heavily loaded ortowing a trailer. When driving atelevation, to match driving performanceas perceived at sea level, reduce grossvehicle weight and gross combinationweight by 2% per 1,000 ft (300 m)elevation.
LOADING YOUR TRAILER
To help minimize how trailer movementaffects your vehicle when driving:
•Load the heaviest items closest tothe trailer floor.
•Load the heaviest items centeredbetween the left and right side trailertires.
•Load the heaviest items above thetrailer axles or just slightly forwardtoward the trailer tongue. Do notallow the final trailer tongue weightto go above or below 10-15% of theloaded trailer weight. The trailertongue weight should never exceed10% of the maximum towing capacity.
•Select a ball mount with the correctrise or drop. When both the loadedvehicle and trailer are connected, thetrailer frame should be level, orslightly angled down toward yourvehicle, when viewed from the side.
TRAILER TOWING HINTS
Towing a trailer places an extra load on yourvehicle's engine, transmission, axle, brakes,tires and suspension. Periodically inspectthese components during and after anytowing operation.
When driving with a trailer or payload, a slighttakeoff vibration or shudder may be presentdue to the increased payload weight.
308
2023 Nautilus (CD9) Canada/United States of America, enUSA, Edition date: 202207, DOMTowing a Trailer