There are 1 stored owner reports matching the lighting leading-label group for the 2009 Mercury Mariner 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 1 of 1 matching reports.
Open the full vehicle complaint log (all categories)TL* THE CONTACT OWNS A 2009 MERCURY MARINER. THE CONTACT STATED THAT THE VEHICLE EXPERIENCED A FAILURE IN WHICH THE FRONT DRIVER'S SIDE HEADLIGHT ASSEMBLY WOULD FILL UP WITH WATER AND FOG, SEVERELY REDUCING VISIBILITY. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER AND THE HEADLIGHT WAS REPAIRED. THE FAILURE CONTINUED TO OCCUR. THE MANUFACTURER OFFERED NO ASSISTANCE. THE FAILURE MILEAGE WAS UNKNOWN. ....UPDATED 08-24-12 *BF UPDATED 08/31/2012 *JS
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.