WHAT IS THE CATALYTIC
CONVERTER
The catalytic converter is part of yourvehicle's emissions system and filters harmfulpollutants from the exhaust gas.
CATALYTIC CONVERTER
PRECAUTIONS
WARNING: Do not park, idle or driveyour vehicle on dry grass or other dryground cover. The emission system heatsup the engine compartment and exhaustsystem, creating the risk of fire.
WARNING: The normal operatingtemperature of the exhaust system is veryhigh. Never work around or attempt torepair any part of the exhaust system untilit has cooled. Use special care whenworking around the catalytic converter.The catalytic converter heats up to a veryhigh temperature after only a short periodof engine operation and stays hot after theengine is switched off.
WARNING: Exhaust leaks may resultin entry of harmful and potentially lethalfumes into the passenger compartment. Ifyou smell exhaust fumes inside yourvehicle, have your vehicle inspectedimmediately. Do not drive if you smellexhaust fumes.
To avoid damaging the catalytic converter:
•Do not crank the engine for more than10 seconds at a time.
•Do not run the engine with a spark pluglead disconnected.
•Do not push-start or tow-start yourvehicle. Use booster cables. See JumpStarting the Vehicle (page 391).
•Use the correct fuel. See Fuel andRefueling (page 211).
•Do not switch the ignition off when yourvehicle is moving.
•Avoid running out of fuel.
•Have the items listed in scheduledmaintenance information performedaccording to the specified schedule.
Note:Do not make any unauthorizedchanges to your vehicle or engine. By law,vehicle owners and anyone whomanufactures, repairs, or services a fleet ofvehicles are not permitted to intentionallyremove an emission control device orprevent it from working.
218
2023 Navigator (TB9) Canada/United States of America, enUSA, Edition date: 202207, DOMCatalytic Converter
•Pull the left (-) paddle to downshift.
•Hold the + paddle for a few seconds toswitch the feature off.
Note:The feature switches off after a shortperiod of time if neither paddle is pulled.
TEMPORARY NEUTRAL MODE
WHAT IS TEMPORARY NEUTRALMODE
This mode keeps your vehicle in neutral (N),for a limited time, when you exit your vehicleor switch your vehicle off.
Note:Do not tow your vehicle in this mode.
HOW DOES TEMPORARY NEUTRALMODE WORK
Use this mode to keep your vehicle in neutral(N) when you exit your vehicle or switch yourvehicle off. For example, if you exit yourvehicle before an automatic car wash.
Note:You do not need to use this mode atan automatic car wash if you stay in yourvehicle with power on.
Note:Do not tow your vehicle in this mode.
Note:Automatic return to park (P) is delayedwhen your vehicle is in this mode. See WhatIs Automatic Return to Park (P) (page 223).
TEMPORARY NEUTRAL MODELIMITATIONS
Your vehicle could shift to park (P) after 30minutes, or when the vehicle battery chargelevel is low. Prolonged use of this mode cancause the 12 V battery to run out of charge.
Do not tow your vehicle in this mode. Failureto follow these instructions could result invehicle damage not covered by the vehiclewarranty.
ENTERING TEMPORARY NEUTRALMODE
1.Power your vehicle on.
2.Bring your vehicle to a complete stop.
3.Press and hold the brake pedal.
4.Shift into neutral (N).
Note:An instructional message appears.
5.Press the neutral (N) button.
Note:A confirmation message appearswhen your vehicle enters the mode.
6.Release the brake pedal.
Note:Your vehicle is free to roll.
7.Switch your vehicle off.
Note:Do not tow your vehicle in this mode.
Note:The neutral (N) indicator on thetransmission selector may flash in this mode.
EXITING TEMPORARY NEUTRALMODE
1.Press the brake pedal.
2.Shift into park (P), or power your vehicleon and shift into drive (D) or reverse (R).
222
2023 Navigator (TB9) Canada/United States of America, enUSA, Edition date: 202207, DOMAutomatic Transmission
HOW DOES FOUR-WHEEL DRIVE
WORK
Using the 1-Speed Automatic Four-Wheel Drive System
The 1-speed automatic four-wheel drivesystem utilizes an electronically controlledon-demand 1-speed transfer case. Thissystem monitors various vehicle sensoryinputs to provide an increased level ofperformance. This system offers the drivertwo-wheel drive high, four-wheel drive autoand four-wheel drive high as available modesof operation via the selectable drive modeswitch. When four-wheel drive auto isselected, the system continuously variespower to the front wheels for optimumperformance for all on-road conditions. Whenfour-wheel drive high is selected, the systemprovides power to the front and rear wheelsfor use in off-road or slippery conditions suchas deep snow, sand or mud. There is furtherinformation on driving in unique drivingconditions. See Driving Hints (page 384).
Using the 2-Speed Automatic Four-Wheel Drive System (If Equipped)
The 2-speed automatic four-wheel drivesystem utilizes an electronically controlledon-demand 2-speed transfer case. Thissystem monitors various vehicle sensoryinputs to provide an increased level ofperformance. This system offers the drivertwo-wheel drive high, four-wheel drive auto,four-wheel drive high, and four-wheel drivelow as available modes of operation. Whenfour-wheel drive auto is selected, the systemcontinuously varies power to the front wheelsfor optimum performance for all on-roadconditions. When either four-wheel drive highor four-wheel drive low are selected with theappropriate drive modes , the four-wheeldrive system provides electronically lockedpower to the front and rear wheels for usein off-road or slippery conditions such asdeep snow, sand or mud. Selecting slowclimb also provides additional gearing forincreased torque multiplication for conditionslike deep sand, snow, steep slopes, or pulling
heavy objects. See Slow Climb (page 297).Additionally, the system is capable ofrecreational flat towing by putting thetransfer case into neutral (N). SeeRecreationally Towing Your Vehicle (page397).
There is further information on driving inunique driving conditions. See Driving Hints(page 384).
FOUR-WHEEL DRIVE
PRECAUTIONS
WARNING: Vehicles with a highercenter of gravity (utility and four-wheeldrive vehicles) handle differently thanvehicles with a lower center of gravity(passenger cars). Avoid sharp turns,excessive speed and abrupt steering inthese vehicles. Failure to drive cautiouslyincreases the risk of losing control of yourvehicle, vehicle rollover, personal injuryand death.
224
2023 Navigator (TB9) Canada/United States of America, enUSA, Edition date: 202207, DOMFour-Wheel Drive (If Equipped)
WHAT IS THE ELECTRONIC
LIMITED-SLIP DIFFERENTIAL
The electronic limited-slip differential systemdirects torque across the axle, enabling thevehicle to drive over terrain and roadconditions that a conventional axle cannot.The system is active at all times and requiresno input from the driver.
Note:If your vehicle is not at optimaloperating conditions or a system fault ispresent, a warning may display in theinstrument cluster. Depending on thewarning, you may need to service yourvehicle.
Operating the Electronic Limited-SlipDifferential with a Spare or MismatchedTires
If your vehicle has an electronic limited-slipdifferential, do not use a spare tire of adifferent size than the tire provided. If youhave a spare tire installed, a message mayappear indicating the system has disabledautomatically or reduced function to preventsystem overheat and damage. Werecommend you reinstall the repaired orreplaced spare tire as soon as possible.When you replace the spare tire, the systemresumes normal operation on the next keycycle.
Trailer Towing
The electronic limited-slip differentialenhances vehicle stability during trailer towoperation. During high demand traileringevents, such as steep slopes, high speedsor with a spare tire, the system may providea warning in the instrument cluster andreduce function or enter a temporarilydisabled state. To resume normal function,stop the vehicle in a safe location and allowthe unit to adequately cool. Once the systemreaches normal operating temperatures,system function restores and the electroniclimited-slip differential restored messagedisplays.
230
2023 Navigator (TB9) Canada/United States of America, enUSA, Edition date: 202207, DOMElectronic Limited-Slip Differential (If Equipped)
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 415).
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.
232
2023 Navigator (TB9) Canada/United States of America, enUSA, Edition date: 202207, DOMBrakes
WHAT IS THE ELECTRIC PARKING
BRAKE
The electric parking brake is used to holdyour vehicle on slopes and flat roads.
APPLYING THE ELECTRIC
PARKING BRAKE
WARNING: Always fully apply theparking brake. Failure to follow thisinstruction could result in personal injuryor death.
WARNING: If you drive extendeddistances with the parking brake applied,you could cause damage to the brakesystem.
The electric parking brake switchis on the center console.
Pull the switch up to apply the electricparking brake. The red warning lamp flashes,then steadily illuminates when the parkingbrake is applied.
Note:You can apply the electric parkingbrake when the ignition is off.
Note:The electric parking brake could applywhen park (P) is selected. See Park (P) (page220).
APPLYING THE ELECTRIC
PARKING BRAKE IN AN
EMERGENCY
You can use the electric parking brake toslow or stop your vehicle in an emergency.
Pull the switch up and hold it.
The red warning lamp illuminates, a tonesounds and the stoplamps turn on when youuse the electric parking brake in anemergency.
The electric parking brake continues to slowyour vehicle down unless you release theswitch.
Note:Do not apply the electric parking brakewhen your vehicle is moving, except in anemergency. If you repeatedly use the electricparking brake to slow or stop your vehicle,you could cause damage to the brakesystem.
MANUALLY RELEASING THE
ELECTRIC PARKING BRAKE
1.Switch the ignition on.
2.Press and hold the brake pedal.
3.Push the switch down.
The red warning lamp turns off.
Pulling Away on a Hill When Towing aTrailer
1.Press and hold the brake pedal.
2.Pull the switch upward and hold it.
3.Shift into gear.
4.Press the accelerator pedal until enginehas developed sufficient torque toprevent your vehicle from rolling downthe hill.
235
2023 Navigator (TB9) Canada/United States of America, enUSA, Edition date: 202207, DOMElectric Parking BrakeE267156
Note: When using a programmed MyKey,you cannot switch the parking aids off. SeeMyKey™ (page 82).
SWITCHING PARKING AID ON AND
OFF
Press the parking aid button anduse the menu to turn the systemon and off.
The system can also be turned off using thepop-up message that appears when you arein reverse (R).
REAR PARKING AID
WHAT IS THE REAR PARKING AID
Rear parking sensors detect objects behindyour vehicle when in reverse (R).
REAR PARKING AID LIMITATIONS
There is a decreased coverage area at theouter corners.
When using a programmed MyKey, youcannot switch the rear parking aid off.
The rear parking aid sensors are active whenyour vehicle is in reverse (R) and the vehiclespeed is less than 5 mph (8 km/h).
The sensor coverage area is up to 71 in(180 cm) from the rear bumper.
The rear parking aid detects large objectswhen you shift into reverse (R) and any ofthe following occur:
•Your vehicle is moving backward at a lowspeed.
•Your vehicle is stationary but an objectis approaching the rear of your vehicleat a low speed.
•Your vehicle is moving backward at a lowspeed and an object is moving towardsyour vehicle, for example another vehicleat a low speed.
The system shall provide no audible warningfor the object behind the vehicle when inneutral (N) gear.
LOCATING THE REAR PARKING AIDSENSORS
The rear parking aid sensors are in the rearbumper.
256
2023 Navigator (TB9) Canada/United States of America, enUSA, Edition date: 202207, DOMParking AidsPE326188 E130178
REAR PARKING AID AUDIBLEWARNINGS
A warning tone sounds when your vehicleapproaches an object. As your vehiclemoves closer to an object, the rate of thetone increases. The warning tonecontinuously sounds when an object is 12 in(30 cm) or less from the rear bumper.
If your vehicle remains stationary for a fewseconds, the audible warning turns off. If yourvehicle moves backward the tone soundsagain.
Note:When the parking aid system soundsa tone, the audio system could reduce theset volume.
FRONT PARKING AID
WHAT IS THE FRONT PARKING AID
Front parking sensors detect objects in frontof your vehicle.
FRONT PARKING AID LIMITATIONS
The front parking aid sensors are activewhen your vehicle is in any position otherthan park (P) and the vehicle speed is lessthan 5 mph (8 km/h).
The sensor coverage area is up to 28 in(70 cm) from the bumper.
If your vehicle is in reverse (R), the frontparking aid detects objects when yourvehicle is moving at a low speed or an objectis moving toward your vehicle and providesan audible warning, for example anothervehicle at a low speed. If your vehicleremains stationary for a few seconds, theaudible warning turns off. Visual indicationis always active in reverse (R).
If your vehicle is in any forward gear, thefront parking aid provides audible warningsand visual indication when your vehicle ismoving at a speed of 5 mph (8 km/h) orbelow and the system detects an objectwithin the detection zone. If your vehicleremains stationary for a few seconds, thevisual indication and audible warning turnsoff.
If your vehicle is in neutral (N), the front andrear sensors provide visual indication onlywhen your vehicle is moving below a speedof 5 mph (8 km/h) and obstacles are detectedinside the detection areas. Once your vehiclestops, the visual indication and audiblewarning stops after a few seconds.
LOCATING THE FRONT PARKING AIDSENSORS
The front parking aid sensors are in the frontbumper.
257
2023 Navigator (TB9) Canada/United States of America, enUSA, Edition date: 202207, DOMParking AidsE187330