Lincoln Aviator 2020-2026 Owners Manual / Maintenance / Fail-Safe Cooling

Lincoln Aviator: Maintenance / Fail-Safe Cooling

Fail-safe cooling allows you to temporarily drive your vehicle before any incremental component damage occurs. The fail-safe distance depends on ambient temperature, vehicle load and terrain.

How Fail-Safe Cooling Works

Lincoln Aviator. Fail-Safe Cooling If the engine begins to overheat, the coolant temperature gauge moves toward the red zone:

Lincoln Aviator. Fail-Safe Cooling A warning lamp illuminates and a message may appear in the information display.

If the engine reaches a preset over-temperature condition, the engine automatically switches to alternating cylinder operation. Each disabled cylinder acts as an air 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 engine temperature, causing the engine to completely shut down. Your steering and braking effort increases in this situation.

When the engine temperature cools, you can re-start the engine. Have your vehicle checked as soon as possible to minimize engine damage.

When Fail-Safe Mode Is Activated

WARNING: Fail-safe mode is for use during emergencies only. Operate your vehicle in fail-safe mode only as long as necessary to bring your vehicle to rest in a safe location and seek immediate repairs. When in fail-safe mode, your vehicle will have limited power, will not be able to maintain high-speed operation, and may completely shut down without warning, potentially losing engine power, power steering assist, and power brake assist, which may increase the possibility of a crash resulting in serious injury.

WARNING: Do not remove the coolant reservoir cap when the engine is on or the cooling system is hot. Wait 10 minutes for the cooling system to cool down. Cover the coolant reservoir cap with a thick cloth to prevent the possibility of scalding and slowly remove the cap. Failure to follow this instruction could result in personal injury.

Your vehicle has limited engine power when in the fail-safe mode, drive your vehicle with caution. Your vehicle does not maintain high-speed operation and the engine may operate poorly.

Remember that the engine is capable of automatically shutting down to prevent engine damage. In this situation:

Pull off the road as soon as safely possible and switch the engine off.
If you are a member of a roadside assistance program, we recommend that you contact your roadside assistance service provider.
If this is not possible, wait for a short period of time for the engine to cool.
Check the coolant level. If the coolant level is at or below the minimum mark, add prediluted coolant immediately.
When the engine temperature cools, you can re-start the engine. Have your vehicle checked as soon as possible to minimize engine damage.

Note: Driving your vehicle without repair increases the chance of engine damage.

Recycled Coolant. Severe Climates. Coolant Change

Recycled Coolant We do not recommend the use of recycled coolant as an approved recycling process is not yet available. Note: Dispose of used coolant in the appropriate manner...

Engine Coolant Temperature Management (If Equipped)

WARNING: To reduce the risk of crash and injury, be prepared that the vehicle speed may reduce and the vehicle may not be able to accelerate with full power until the coolant temperature reduces...

Other information:

Lincoln Aviator 2020-2026 Service Manual: Diagnosis and Testing - Charging System

Diagnostic Trouble Code (DTC) Chart Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to: Diagnostic Methods (100-00 General Information, Description and Operation). Diagnostic Trouble Code Chart Module DTC Description Action BCM B11DB:02 Battery Monitoring Module "A": General Signal Failure GO to Pinpoint Test F BCM B11DB:08 Battery Monitoring Module "A": Bus Signal/Message Failures GO to Pinpoint Test F BCM B11DB:09 Battery Monitoring Module "A": Component Failures GO to Pinpoint Test F BCM B11DB:11 Battery Monitoring Module "A": Circuit Short To Ground GO to Pinpoint Test F BCM B11DB:49 Battery Monitoring Module "A": Internal Electronic Failure GO to Pinpoint Test I BCM B11DB:55 Battery Monitoring Module "A": Not Configured GO to Pinpoint Test J BCM B1489:11 Battery Monitoring System (BMS) Sensor Power: Circuit Short To Ground GO to Pinpoint Test F PCM P0562:00 System Voltage Low: No Sub Type Information GO to Pinpoint Test B PCM P0563:00 System Voltage High: No Sub Type Information GO to Pinpoint Test A PCM P065B:00 Generator "A" Control Circuit Range/Performance: No Sub Type Information GO to Pinpoint Test B PCM P065C:00 Generator "A" Mechanical Performance: No Sub Type Information GO to Pinpoint Test B PCM P0A3B:00 Generator "A" Over Temperature: No Sub Type Information GO to Pinpoint Test K PCM P0A5A:00 Generator Current Sensor Circuit Range/Performance: No Sub Type Information GO to Pinpoint Test E PCM P0A5B:00 Generator Current Sensor Circuit Low: No Sub Type Information GO to Pinpoint Test E PCM P0A5C:00 Generator Current Sensor Circuit High: No Sub Type Information GO to Pinpoint Test E PCM U012D:00 Lost Communication With Generator "A" Control Module: No Sub Type Information GO to Pinpoint Test G PCM U042E:00 Invalid Data Received From Generator "A" Control Module: No Sub Type Information GO to Pinpoint Test G Inspection and Verification Verify the customer concern by operating the charging system...

Lincoln Aviator 2020-2026 Service Manual: Removal and Installation - Floor Console

Special Tool(s) / General Equipment Interior Trim Remover Removal NOTE: Removal steps in this procedure may contain installation details. Remove the front seats. Refer to: Front Seat (501-10A Front Seats, Removal and Installation)...

Child Seats

Lincoln Aviator. Child Seats

Use a child restraint (sometimes called an infant carrier, convertible seat, or toddler seat) for infants, toddlers and children weighing 40 lb (18 kg) or less (generally four-years-old or younger).

Using Lap and Shoulder Belts

WARNING: Do not place a rearward facing child restraint in front of an active airbag. Failure to follow this instruction could result in personal injury or death.