2023 LINCOLN AVIATOR check engine

Battery and Charging System (12 volt)
Action Message
The charging system needs servicing. If the warning stays on or continues to come on, have
the system checked as soon as possible. Check Charging System
The charging system needs servicing. If the warning stays on or continues to come on have
the system checked as soon as possible. Charging System Service Soon
The charging system needs servicing. Have the system checked as soon as possible. Charging System Service Now
The battery management system determines that the 12V battery is at a low state of charge.
Start the engine to charge the battery or charge the battery using an aftermarket battery
charger. This message clears once you restart your vehicle and the battery state of charge
has recovered. Battery State of Charge Low
The battery management system determines that the battery is at a low state of charge. Turn
the ignition off as soon as possible to protect the battery. This message clears once the
vehicle has been started and the battery state of charge has recovered. Turning off unneces-
sary electrical loads allows faster battery state-of-charge recovery. Turn Power Off To Save Battery
Displays when the battery management system detects an extended low-voltage condition.
The system disables various vehicle features to help preserve the battery. Turn off as many
of the electrical loads as soon as possible to improve system voltage. When the system
voltage recovers, the disabled features operate again as normal. Low Battery Features Temporarily Turned Off
146
Information Displays

Action Message
The fuel system has finished depressurizing and you can begin to refuel. Fuel Door Open
A reminder to close the fuel door. Failure to follow this instruction can cause the check engine
light to illuminate. Close Fuel Door to Avoid ""Check Engine""
Light
There is an error in attempting to refill your vehicle. Refuel Error See Manual
Hill Descent Control
Action Message
Displays when you switch off hill descent control mode. Hill Descent Control OFF
Displays when hill descent speed exceeds 20 mph (32 km/h). For Hill Descent Reduce Speed 20 MPH or
Less
Displays when hill descent speed exceeds 20 mph (32 km/h). For Hill Descent Reduce Speed 32 Km/h or
Less
Displays when hill descent control mode requires you to shift the transmission into gear. For Hill Descent Select Gear
Displays when the hill control mode requires you to resume control. Hill Descent Driver Resume Control
Displays when a hill descent system fault is present. Hill Descent Control Fault
151
Information Displays

Action Message
Displays when you disable the hill descent control mode to cool the brake system. Hill Descent Control Off System Cooling
Displays when hill descent control mode is ready. Hill Descent Control Ready
Displays when you activate the hill descent control mode. Hill Descent Control Active
Hill Start Assist
Action Message
Hill start assist is not available. Have the system checked as soon as possible. See Hill Start
Assist (page 274). Hill Start Assist Not Available
Keys and Intelligent Access
Action Message
A reminder to press the brake while starting your vehicle. To START Press Brake
The key is not detected by the system. No Key Detected
The start stop button is pressed to shut off the engine and an intelligent access key is not
detected inside your vehicle. Restart Now or Key is Needed
Your vehicle is in the accessory ignition state. Full Accessory Power Active
152
Information Displays

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
Check to make sure there are no objects or debris blocking the camera. Have the system
checked if this condition persists. Front Camera Temporarily Not Available
Clean the windshield to improve visibility and allow the camera to properly operate. 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
Maintenance
Action Message
Stop your vehicle as soon as safely possible and turn off the engine. Check the oil level. If
this message stays on or continues to come on with your engine running, have the system
checked as soon as possible. Low Engine Oil Pressure
The engine oil life is low and needs to be changed soon. See General Maintenance
Information (page 579). Change Engine Oil Soon
The engine oil life is low and needs to be changed immediately. See General Maintenance
Information (page 579). Oil Change Required
154
Information Displays

Action Message
The brake fluid level is low. Have the system checked immediately. See Brake Fluid Check
(page 409). Brake Fluid Level Low
The brake system needs servicing. Stop the vehicle in a safe place. Have the system checked
as soon as possible. Check Brake System
The engine coolant temperature is excessively high. Have the system checked immediately. Engine Coolant Over Temperature
The washer fluid is low and needs to be refilled. Washer Fluid Level Low
Indicates that your vehicle is still in Transport mode. This may not allow some features to
properly operate. Have the system checked as soon as possible. Transport Mode Contact Dealer
Indicates that your vehicle is still in Factory mode. This may not allow some features to
properly operate. Have the system checked as soon as possible. Factory Mode Contact Dealer
Informs the driver that the powertrain needs service due to a powertrain concern. Have the
system checked as soon as possible. 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
The motor electronics are overheating. Stop your vehicle as soon as safely possible, turn off
your vehicle and let it cool. If the warning stays on or continues to come on, have the system
checked as soon as possible. Motor Coolant Over Temperature
EV functionality is disabled and the engine is running to maintain oil quality. See Plug-In
Hybrid Vehicle Operation (page 219). Engine ON Due to Low Use Normal Operation
155
Information Displays

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 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
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
The electric parking brake system has been put into a special mode to allow service of the
rear brakes. Have the system checked as soon as possible. Park Brake Maintenance Mode
158
Information Displays

Starting System
Action Message
Displays when starting the vehicle as a reminder to apply the brake. To START Press Brake
Displays when the starter has exceeded its cranking time in attempting to start the vehicle. Cranking Time Exceeded
Displays when the starter is attempting to start the vehicle. Engine Start Pending Please Wait
Displays when the pending start has been cancelled. Pending Start Cancelled
Tire Pressure Monitoring System
Action Message
One or more tires on your vehicle have low tire pressure. See Tire Pressure Monitoring
System (page 447). Tire Pressure Low
The system may require service. If this message stays on or continues to come on, have the
system checked as soon as possible. See Tire Pressure Monitoring System (page 447). Tire Pressure Monitor Fault
The system may require service, or your spare tire is in use. For more information on how the
system operates under these conditions, See Tire Pressure Monitoring System (page 447).
If this message stays on or continues to come on, have the system checked as soon as
possible. Tire Pressure Sensor Fault
161
Information Displays

Transmission
Action Message
You switched the engine off and the gear selector is in any position other than park (P). Shift to Park
The transmission is too cold. Wait for it to warm up before you drive. Transmission Warming Up Please Wait
Displays when you need to press the brake pedal. Press Brake Pedal
The transmission is overheating and needs to cool. Stop in a safe place as soon as it’s
possible. Transmission Over Temperature Stop Safely
Have the system checked as soon as possible. Transmission Service Required
The transmission is overheating and needs to cool. Stop in a safe place as soon as it is
possible. Transmission Too Hot Press Brake
The transmission has limited functionality. Have the system checked as soon as possible. Transmission Limited Function See Manual
A reminder to shift into park (P). In addition, this message is typical after reconnecting or
recharging the battery until you cycle the ignition to the on mode. See Changing the 12V
Battery (page 410). Transmission Not in Park
Displays when there is a concern and the park brake needs to be depressed before exiting
the vehicle. Have the system checked as soon as possible. SHIFT SYS FAULT Confirm Park Brake Apply
Before Exiting the Vehicle
Have the system checked as soon as possible. SHIFT SYS FAULT Service Required
Displays when there is a concern while the vehicle is shifting to park (P). Have the system
checked as soon as possible. SHIFT SYS FAULT Vehicle is Shifting to Park
163
Information Displays