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:

  1. Pull off the road as soon as safely possible and switch the engine off.
  2. If you are a member of a roadside assistance program, we recommend that you contact your roadside assistance service provider.
  3. If this is not possible, wait for a short period of time for the engine to cool.
  4. Check the coolant level. If the coolant level is at or below the minimum mark, add prediluted coolant immediately.
  5. 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 2020-2022 Service Manual: Specifications


      Material Item Specification Fill Capacity Motorcraft® High Temperature Nickel Anti-Seize Lubricant XL-2 - Motorcraft® Wheel and Tire Cleaner ZC-37-A -   General Specifications Item Specification Tire Inflation Tires See Safety Certification Label on driver door jamb Wheel Weights Wheel weight type Use a wheel weight manufacturer's rim gauge to determine the correct wheel weight application   Torque Specifications Item Nm lb-ft lb-in Valve stem-to-TPMS sensor screw...

    Lincoln Aviator 2020-2022 Owners Manual: 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. Follow your community's regulations and standards for recycling and disposing of automotive fluids...

    Categories

    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.

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