There are 1 owner-reported lighting complaints for the 2005 Mercury Marinerin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
TL* THE CONTACT OWNS A 2005 MERCURY MARINER. WHILE DRIVING APPROXIMATELY 60 MPH, THE EXTERIOR HEADLIGHTS FAILED. THE CONTACT SWITCHED TO THE AUTOMATIC LIGHT SYSTEM. THE VEHICLE WAS TAKEN TO THE DEALER WHERE IT WAS DIAGNOSED AS A LIGHT SWITCH FAILURE. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 150,000.
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