There are 2 owner-reported tires & wheels complaints for the 2009 Mercury Marinerin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
TIRE PRESSURE SENSOR FAULT. AT STARTUP, LOW TIRE PRESSURE WARNING LIGHT FLASHES, THEN REMAINS STEADY, ALTHOUGH TIRE PRESSURE IS AT RECOMMENDED PRESSURE (35 PSI). SERVICE TECHNICIAN INDICATES REPLACING FAULTY TIRE PRESSURE SENSOR LOCATED ON LEFT FRONT TIRE AT ESTIMATED COST OF $150. CUSTOMER MANUALLY CHECKS TIRE PRESSURE AT LEAST MONTHLY.
VEHICLE HAS ORIGINAL MICHELIN P225/65R17 CROSS TERRAIN TIRES: DOT SEQUENCE B93T, DOT PRODUCTION NUMBER PYMX 2908, WITH 55,057 MILES. DURING ROUTINE OIL CHANGE AND TIRE ROTATION, SHOP DISCOVERED DRY ROTTING BETWEEN TREADS AND FINE-LINE CRACKING ON ALL FOUR TIRES REQUIRING NEAR-FUTURE REPLACEMENT. MICHELIN SIX-YEAR WARRANTY EXPIRED JULY 2015. VEHICLE IS PARKED IN RESIDENTIAL GARAGE; THERE IS NO KNOWN ADVERSE WEATHER EXPOSURE.
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