There are 2 stored owner reports matching the engine leading-label group for the 2010 Lincoln Navigator in our NHTSA-sourced dataset. These are unverified consumer reports and may not reflect confirmed defects.
This group counts stored reports whose component label starts with one of this site's matching prefixes, ignoring case. Each matching report counts once within the group. Components mentioned later in the label or only in the narrative are not searched. How component counts work
Loaded 2 of 2 matching reports.
Open the full vehicle complaint log (all categories)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.
NHTSA source checks for this vehicle year
Checks are recorded separately for each dataset, not for the whole page. Dates use UTC. A missing check date does not mean no records exist.
Vehicle import recorded: Apr 28, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.