Lincoln Aviator: Maintenance / Engine Coolant Check

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.

WARNING: Do not put coolant in the windshield washer reservoir. If sprayed on the windshield, coolant could make it difficult to see through the windshield.

WARNING: To reduce the risk of personal injury, make sure the engine is cool before unscrewing the coolant pressure relief cap. The cooling system is under pressure. Steam and hot liquid can come out forcefully when you loosen the cap slightly.

WARNING: Do not add coolant further than the MAX mark.

When the engine is cold, check the concentration and level of the coolant at the intervals listed in the scheduled maintenance information.

Note: Make sure that the coolant level is between the MIN and MAX marks on the coolant reservoir.

Note: Coolant expands when it is hot. The level may extend beyond the MAX mark.

Maintain coolant concentration within 48% to 50%, which equates to a freeze point between -29°F (-34°C) and -35°F (-37°C). Coolant concentration should be checked using a refractometer. We do not recommend the use of hydrometers or coolant test strips for measuring coolant concentration.

Changing the Engine Air Filter

WARNING: To reduce the risk of vehicle damage and personal burn injuries, do not start your engine with the air cleaner removed and do not remove it while the engine is running...

Adding Coolant

WARNING: Do not add engine coolant when the engine is on or the cooling system is hot. Failure to follow this instruction could result in personal injury...

Other information:

Lincoln Aviator 2020-2026 Owners Manual: Symbols Glossary


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Lincoln Aviator 2020-2026 Service Manual: Diagnosis and Testing - DTC Chart and Pinpoint Tests


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   ATCM B11D9:16 Vehicle Battery: Circuit Voltage Below Threshold   GO to Pinpoint Test A   ATCM B11D9:17 Vehicle Battery: Circuit Voltage Above Threshold   GO to Pinpoint Test A   ATCM U0140:00 Lost Communication With Body Control Module: No Sub Type Information   GO to Pinpoint Test B   ATCM U2002:9E Switch: Stuck On   GO to Pinpoint Test C   ATCM U2009:9E Rotary Encoder: Stuck On   GO to Pinpoint Test D   ATCM U3000:04 Control Module: System Internal Failure   GO to Pinpoint Test D   AWD C00A1:57 Driveline Control Module: Invalid / Incompatible Software Component   GO to Pinpoint Test E   AWD C00A1:F1 Driveline Control Module: <Manufacturer Defined>   GO to Pinpoint Test E   AWD C00A5:01 Driveline Control Module Transfer Case Unit Control Circuit Driver: General Electrical Failure   GO to Pinpoint Test E   AWD C00A5:08 Driveline Control Module Transfer Case Unit Control Circuit Driver: Bus Signal / Message Failure   GO to Pinpoint Test E   AWD C00A5:19 Driveline Control Module Transfer Case Unit Control Circuit Drive: Circuit Current Above Threshold   GO to Pinpoint Test E   AWD C00A5:1C Driveline Control Module Transfer Case Unit Control Circuit Driver: Circuit Voltage Out of Range   GO to Pinpoint Test E   AWD C00A5:49 Driveline Control Module Transfer Case Unit Control Circuit Drive: Internal Electronic Failure   GO to Pinpoint Test E   AWD C00A5:4B Driveline Control Module Transfer Case Unit Control Circuit Drive: Over Temperature   GO to Pinpoint Test E   AWD C00A5:96 Driveline Control Module Transfer Case Unit Control Circuit Drive: Component Internal Failure   GO to Pinpoint Test E   AWD C00A6:18 4WD/AWD Transfer Case Unit Actuator: Circuit Current Below Threshold   GO to Pinpoint Test F   AWD C00A6:19 4WD/AWD Transfer Case Unit Actuator: Circuit Current Above Threshold   GO to Pinpoint Test F   AWD C00A6:4B 4WD/AWD Transfer Case Unit Actuator: Over Temperature   GO to Pinpoint Test G   AWD C00A6:54 4WD/AWD Transfer Case Unit Actuator: Missing Calibration   GO to Pinpoint Test H   AWD C00A6:66 4WD/AWD Transfer Case Unit Actuator: Signal Has Too Many Transitions/Events   GO to Pinpoint Test I   AWD C00A6:71 4WD/AWD Transfer Case Unit Actuator: Actuator Stuck   GO to Pinpoint Test F   AWD C00A6:74 4WD/AWD Transfer Case Unit Actuator: Actuator Slipping   GO to Pinpoint Test F   AWD C00A6:99 4WD/AWD Transfer Case Unit Actuator: Exceeded Learning Limit   GO to Pinpoint Test F   AWD C00A7:11 4WD/AWD Transfer Case Unit Actuator Position Sensor "A": Circuit Short To Ground   GO to Pinpoint Test J   AWD C00A7:13 4WD/AWD Transfer Case Unit Actuator Position Sensor "A": Circuit Open   GO to Pinpoint Test J   AWD C00A7:17 4WD/AWD Transfer Case Unit Actuator Position Sensor "A": Circuit Voltage Above Threshold   GO to Pinpoint Test J   AWD C00A8:11 4WD/AWD Transfer Case Unit Actuator Position Sensor "B": Circuit Short To Ground   GO to Pinpoint Test K   AWD C00A8:13 4WD/AWD Transfer Case Unit Actuator Position Sensor "B": Circuit Open   GO to Pinpoint Test K   AWD C00A8:17 4WD/AWD Transfer Case Unit Actuator Position Sensor "B": Circuit Voltage Above Threshold   GO to Pinpoint Test K   AWD P0562:00 System Voltage Low: No Sub Type Information   GO to Pinpoint Test E   AWD P0563:00 System Voltage high: No Sub Type Information   GO to Pinpoint Test E   AWD P0603:00 Internal Control Module Keep Alive Memory (KAM) Error: No Sub Type Information   GO to Pinpoint Test E   AWD P0604:00 Internal Control Module Random Access Memory (RAM) Error: No Sub Type Information   GO to Pinpoint Test E   AWD P0605:00 Internal Control Module Read Only Memory (ROM) Error: No Sub Type Information   GO to Pinpoint Test E   AWD P0607:00 Control Module Performance: No Sub Type Information   GO to Pinpoint Test E   AWD P060A:00 Internal Control Module Monitoring Processor Performance: No Sub Type Information   GO to Pinpoint Test E   AWD P060B:00 Internal Control Module A/D Processing Performance: No Sub Type Information   GO to Pinpoint Test E   AWD P060C:00 Internal Control Module Main Processor Performance: No Sub Type Information   GO to Pinpoint Test E   AWD P0630:00 VIN Not Programmed or Incompatible - ECM/PCM: No Sub Type Information   GO to Pinpoint Test L   AWD P064F:00 Unauthorized Software/Calibration Detected: No Sub Type Information   GO to Pinpoint Test E   AWD P068A:00 ECM/PCM Power Relay De-Energized - Too Early: No Sub Type Information   GO to Pinpoint Test E   AWD P1001:00 KOER Not Able to Complete, KOER Aborted: No Sub Type Information   GO to Pinpoint Test M   AWD P1397:01 System Voltage Out Of Self-Test Range: General Electrical Failure   GO to Pinpoint Test M   AWD P1501:00 Vehicle Speed Sensor Out Of Self Test Range: No Sub Type Information   GO to Pinpoint Test M   AWD P160A:00 Control Module Vehicle Options Reconfiguration Error: No Sub Type Information   GO to Pinpoint Test L   AWD P166E:00 Internal control module all wheel drive discounnect control performance: No Sub Type Information   GO to Pinpoint Test N   AWD P1674:00 Control Module Software Corrupted: No Sub Type Information   GO to Pinpoint Test E   AWD P1705:00 Transmission Range Circuit Not Indicating Park/Neutral During Self-Test: No Sub Type Information   GO to Pinpoint Test M   AWD U0100:00 Lost Communication With ECM/PCM "A": No Sub Type Information   GO to Pinpoint Test O   AWD U0101:00 Lost Communication with TCM: No Sub Type Information   GO to Pinpoint Test O   AWD U0121:00 Lost Communication With Anti-Lock Brake System (ABS) Control Module "A": No Sub Type Information   GO to Pinpoint Test O   AWD U0126:00 Lost Communication With Steering Angle Sensor Module: No Sub Type Information   GO to Pinpoint Test O   AWD U0137:00 Lost Communication With Trailer Brake Control Module: No Sub Type Information   GO to Pinpoint Test O   AWD U0138:00 Lost Communication with All Terrain Control Module: No Sub Type Information   GO to Pinpoint Test O   AWD U0140:00 Lost Communication With Body Control Module: No Sub Type Information   GO to Pinpoint Test O   AWD U0146:00 Lost Communication With Serial Data Gateway "A": No Sub Type Information   GO to Pinpoint Test O   AWD U0151:00 Lost Communication With Restraints Control Module: No Sub Type Information   GO to Pinpoint Test O   AWD U0155:00 Lost Communication With Instrument Panel Cluster (IPC) Control Module: No Sub Type Information   GO to Pinpoint Test O   AWD U0164:00 Lost Communication With HVAC Control Module: No Sub Type Information   GO to Pinpoint Test O   AWD U0212:00 Lost Communication With Steering Column Control Module: No Sub Type Information   GO to Pinpoint Test O   AWD U0402:00 Invalid Data Received from TCM: No Sub Type Information   GO to Pinpoint Test P   AWD U0415:00 Invalid Data Received from Anti-Lock Brake System (ABS) Control Module "A": No Sub Type Information   GO to Pinpoint Test P   AWD U0422:00 Invalid Data Received From Body Control Module: No Sub Type Information   GO to Pinpoint Test P   AWD U0423:00 Invalid Data Received from Instrument Panel Cluster Control Module: No Sub Type Information   GO to Pinpoint Test P   AWD U0428:00 Invalid Data Received From Steering Angle Sensor Module: No Sub Type Information   GO to Pinpoint Test P   AWD U1012:00 Invalid Internal Control Module Monitoring Data Received from Anti-Lock Brake System (ABS) Control Module: No Sub Type Information   GO to Pinpoint Test P   AWD U1014:00 Invalid Internal Control Module Monitoring Data Received from Restraints Control Module: No Sub Type Information   GO to Pinpoint Test P   AWD U2100:00 Initial Configuration Not Complete: No Sub Type Information   GO to Pinpoint Test L   AWD U2101:00 Control Module Configuration Incompatible: No Sub Type Information   GO to Pinpoint Test L   AWD U2200:00 Control Module Configuration Memory Corrupt: No Sub Type Information   GO to Pinpoint Test L Global Customer Symptom Code (GCSC) Chart Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices...

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Activating Intelligent Access

The intelligent access key must be within 3 ft (1 m) of the door or luggage compartment you intend to lock or unlock.

At a Door

Electronic door handles are on each door. Gently depress the switch inside the exterior door handle to unlock and open the door. An unlock symbol illuminates on the door window trim indicating your vehicle is unlocked.

Lincoln Aviator. Activating Intelligent Access

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