There are 2 stored owner reports matching the fuel system leading-label group for the 2009 Lincoln MKS 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)TL* THE CONTACT OWNS A 2009 LINCOLN MKS. WHILE DRIVING AT VARIOUS SPEEDS, A LOUD WHISTLING NOISE EMITTED FROM THE VEHICLE. THE VEHICLE WAS TAKEN TO A DEALER WHERE IT WAS DIAGNOSED THAT THE FUEL PUMP NEEDED TO BE REDESIGNED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 182,000.
A/C CONDENSER AND TRANSMISSION UNIT. A FREON LEAK IN THIS UNIT CAN DUMP FREON GAS AND COMPRESSOR OIL INTO THE TRANSMISSION WHICH CAN CAUSE TRANS PROBLEMS OR TRANSMISSION FLUID CAN LEAK INTO THE A/C SYSTEM AND RUIN ALL COMPONENTS IN THE SYSTEM. THIS CAN BE A VERY EXPENSIVE REPAIR OR THE CAR IS JUNK. TRANS COOLER SHOULD BE A SEPARATE UNIT TO PREVENT THIS PROBLEM.
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.