There are 2 owner-reported engine complaints for the 2010 Lincoln Navigatorin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
Coolant leaking
TL* THE CONTACT OWNS A 2010 LINCOLN NAVIGATOR. THE CONTACT STATED THAT WHILE PARKED, HE NOTICED COOLANT LEAKING FROM THE UNDER BODY OF VEHICLE. THE CONTACT INSPECTED THE VEHICLE AND NOTICED THE AUXILIARY SUPPLY TUBE WHICH LAYS ON TOP OF A STEEL BRACKET WAS LEAKING COOLANT. THE CONTACT MENTIONED THAT THE STEEL BRACKET HAD RUBBED A HOLE ONTO THE AUXILIARY SUPPLY TUBE. THE VEHICLE WAS TAKEN TO THE DEALER FOR DIAGNOSTIC TESTING. THE TECHNICIAN STATED THE AUXILIARY SUPPLY TUBE NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE APPROXIMATE FAILURE MILEAGE WAS 76,000.
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 26, 2026