2021 LINCOLN NAVIGATOR service

Drivetrain
Action
Message
Displays when the system requires service. Have your vehicle checked as soon as possible.
Check Electronic Limited Slip Differential
Displays when the system requires service. Have your vehicle checked as soon as possible.
Electronic Limited Slip Differential Off See
Owner's Manual
Displays when the electronic limited slip differential system resumes no\
rmal function.
Electronic Limited Slip Differential Restored
to Normal
Displays if the electronic limited slip differential system temporarily \
turns off due to overheating
or an undersized spare tire. If an undersized spare tire is installed, replace the spare tire witha full-sized tire as soon as possible. If not, stop the vehicle in a safe location and allow the system to cool.
Electronic Limited Slip Differential Temporarily
Disabled
Displays if the electronic limited slip differential has limited functio\
nality. This could be due
to an undersized spare tire or caused by the system overheating. If an \
undersized spare tire is installed, replace the spare tire with a full-sized tire as soon as p\
ossible. If an undersized
spare tire is not installed, the vehicle has reduced functionality. Have your vehicle checked as soon as possible.
Electronic Limited Slip Differential Reduced
Torque
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Navigator (TB9) Canada/United States of America, enUSA, First-Printing Information Displays

Action
Message
Displays when you select a drive mode that does not allow the electronic\
limited slip differentialto turn on. This may also display when the electronic limited slip diffe\
rential has a fault and the vehicle requests the locking feature.
Electronic Limited Slip Differential Locking
Feature Not Available
The transfer case is in the neutral position. This message indicates tha\
t your vehicle is safeto be towed with all four wheels on the ground.
Neutral Tow Enabled Leave Transmission in
Neutral
The transfer case is NOT in the neutral position. This message indicates that your vehicle isNOT safe to be towed with all four wheels on the ground.
Neutral Tow Disabled
Four-Wheel Drive Action
Message
Displays when the system requires service. Have the system checkedas soon as possible.
Check 4x4
The 4X4 system is making a shift.
4x4 Shift in Progress
Displays when you attempt to switch to 4X4 LOW and you do not shiftthe transmission to neutral (N).
For 4x4 LOW Shift to N
Displays when you attempt to switch to 4X4 LOW and your vehicle'sspeed is greater than 3 mph (5 km/h).
For 4x4 LOW Slow to 3 MPH
Displays when you attempt to switch from 4X4 LOW and you do notshift the transmission to neutral (N).
To Exit 4x4 LOW Shift to N
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Navigator (TB9) Canada/United States of America, enUSA, First-Printing Information Displays

Action
Message
Displayed during spare key programming when not enough keys have been programmed.
Not Enough Keys Learned
Displays when the key battery is low. Change the battery as soon as possible.
Key Battery Low Replace Soon
Displays when the vehicle is switched off.
Vehicle Switched Off
Lane Keeping System Action
Message
Displays when the system requires service. Have the system checked as soon as possible.
Lane Keeping Sys. Malfunction Service
Required
The system has detected a condition that has caused the system to be tem\
porarily unavailable.
Front Camera Temporarily Not Available
The system has detected a condition that requires the windshield to be c\
leaned to operateproperly.
Front Camera Low Visibility Clean Screen
Displays when the system requires service. Have the system checked as soon as possible.
Front Camera Malfunction Service Required
The system requests that you keep your hands on the steering wheel.
Keep Hands on Steering Wheel
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Navigator (TB9) Canada/United States of America, enUSA, First-Printing Information Displays

Action
Message
Informs the driver that the powertrain needs service due to a powertrain\
malfunction.
See Manual
The engine has reduced power to help reduce high engine temperature.
Power Reduced to Lower Engine Temp
The brake system has reduced stopping power.
Brake Applied Power Reduced
MyKey Action
Message
Displays when a MyKey cannot be programmed during key programming. Restart programming.
MyKey not Created
When starting your vehicle, a MyKey is in use and the MyKey speed limit is on.
Speed Limited to XX MPH/km/h
When a MyKey is in use, the MyKey speed limit is on and your vehicle speed is approaching80 mph (130 km/h).
Near Vehicle Top Speed
Displays when MyKey is active.
MyKey Active Drive Safely
Displays when MyKey is active.
Check Speed Drive Safely
Displays when a MyKey is in use and the MyKey speed limit is reached.
Vehicle at Top Speed of MyKey Setting
Displays when a MyKey is in use and Belt-Minder is activated.
Buckle Up to Unmute Audio
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Action
Message
Displays when a MyKey is in use and AdvanceTrac is activated.
AdvanceTrac On - MyKey Setting
Displays when a MyKey is in use and park aid is activated.
MyKey Park Aid Cannot be Deactivated
Displays when the lane keeping aid is on per MyKey settings.
Lane Keeping Alert On MyKey Setting
Off Road Action
Message
Hill descent control mode is active.
Hill Descent Control Active
Hill descent control mode is inactive.
Hill Descent Control OFF
Your vehicle speed requirement for off-road mode entry has not beenmet.
For Hill Descent Reduce Speed XX MPH/km/h or Less
You need to select a transmission gear for hill descent mode.
For Hill Descent Select Gear
Hill descent control mode is deactivated and you must resume control.
Hill Descent Driver Resume Control
Displays when the system requires service. Have the system checkedas soon as possible.
Hill Descent Control Fault
The hill descent system is cooling due to overuse.
Hill Descent Control Off System Cooling
The hill descent control system is ready.
Hill Descent Control Ready
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Navigator (TB9) Canada/United States of America, enUSA, First-Printing Information Displays

Park Aid
Action
Message
Displays when the system requires service. Have the system checked as soon as possible.
Check Front Park Aid
Displays when the system requires service. Have the system checked as soon as possible. See Rear Parking Aid (page 252).
Check Rear Park Aid
Park Brake Action
Message
The parking brake is set, the engine is running and you drive your vehicle more than
3 mph
(5 km/h). If the warning stays on after the parking brake is released, have the system checked as soon as possible.
Park Brake Engaged
The electric parking brake is set and a manual release is attempted without the brake pedal being pressed.
To Release: Press Brake and Switch
The electric parking brake is set and an automatic release is attempted but cannot beperformed. 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
park brake before continued driving.
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
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Action
Message
The electric parking brake system has been put into a special mode that is used to allowservice of the rear brakes. Have the system checked as soon as possible.
Park Brake Maintenance Mode
Displays when the system requires service. Some functionality may still be available. Havethe system checked as soon as possible.
Park Brake Limited Function Service Required
Displays when the system requires service. Have the system checked as soon as possible.
Park Brake Malfunction Service Now
Numerous park brake applies have overheated the system. Wait 2 minutes before attemptingto apply again.
Park Brake System Overheated
Power Steering Action
Message
Displays when the system requires service. Have the system checked as soon as possible.
Steering Fault Service Now
Displays when the system requires service. Have the system checked as soon as possible.
Steering Assist Fault Service Required
The power steering system is not working. Stop the vehicle in a safe place. Have the systemchecked as soon as possible.
Steering Loss Stop Safely
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Pre-Collision Assist
Action
Message
You have a blocked sensor due to inclement weather, ice, mud or water in front of the radar
sensor. You can typically clean the sensor to resolve.
Pre-Collision Assist Not Available Sensor
Blocked
Displays when the system requires service. Have the system checked as soon as possible.
Pre-Collision Assist Not Available
Pro Trailer Backup Assist™ Action
Message
Pro Trailer Backup Assist™ can only be activated when the vehicle isstopped.
Pro Trailer Backup Assist™ Not Active Stop Vehicle to Activate
Camera System is locating the sticker. Wait until the sticker is foundbefore attempting to use Pro Trailer Backup Assist.
Pro Trailer Backup Assist™ Locating Sticker Please wait... Press Knob
to Exit
Stop Now. Pro Trailer Backup Assist™ has reached max trailer angle.
Pro Trailer Backup Assist™ Stop now Maximum trailer angle Press
Knob to Exit
Stop Now. Pro Trailer Backup Assist™ is no longer controlling steering.
Pro Trailer Backup Assist™ Stop Now Take Control of Steering Wheel
Slow vehicle speed. Vehicle is approaching the exit speed for the ProTrailer Backup Assist™ feature.
Pro Trailer Backup Assist™ Reduce Speed Turn Knob to Steer Press
Knob to Exit
Conditions for Pro Trailer Backup Assist operation are not met. See
Trailer Reversing Aids (page 316).
Pro Trailer Backup Assist™ System is Not Available
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Navigator (TB9) Canada/United States of America, enUSA, First-Printing Information Displays