Two problems related to exterior lighting have been reported for the 2010 Mercury Mariner. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2010 Mercury Mariner based on all problems reported for the 2010 Mariner.
Power steering suddenly stopped working while I was driving. The vehicle is extremely difficult to navigate but I was able to pull off the road to a safe area. After shutting the car off for 15 minutes and restarting the lack of power steering remained, but there was now a message saying "power steering assist fault". This car has several other electrical problems with regard to the a/c & blower, and also the drivers side window and dome lights work sporadically.
Returning home from work, wife in front of me. Center high stop light had some bad bulbs. Removed assembly, found melted reflector and broken bulbs. Took many photos. Informed local dealership by email. Told them u/w. Part arrived 1 week later, picked up on Saturday morning, had to pay $90. 41. I badgered dealership for reimbursement, finally got check at end of December. Still have pics and part.
| Exterior Lighting problems | |
| Headlights problems |