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definitely annoying
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
33,333 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2010 Mercury Grand Marquis electrical problems

electrical problem

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2010 Mercury Grand Marquis Owner Comments

problem #3

Apr 072014

Grand Marquis 8-cyl

  • 28,000 miles


Splicing on almost all electrical systems had come apart. Affected were the radio, clock, windows, power seats, lights, door locks, trunk release inside car, low tire monitor warning light stayed on constantly, seat belt warning light stayed on, warning bell for key in ignition stayed on except when car was moving, dome light would not go off whenever you got out of car. Some of these problems were constant and some were intermittent. As a result of the locking problem, our vehicle was stolen, but thankfully found with no damage. With no help from our local Ford dealer, I finally called the Ford Motor Co. Complaint dept. And was told to get a diagnostic test run on it, which I did at another dealers, and that is when they found the wiring splicing problem. As a result of the electrical problems, it has blown the motors which control both the power seats. I have had the wiring fixed but not the motors replaced due to the expense involved. I feel like I have a real lemon on my hands as well as an unsafe vehicle.

- Manchester, OH, USA

problem #2

Nov 012010

Grand Marquis

  • 9,000 miles
The contact owns a 2010 Mercury Grand Marquis. The contact stated that the air conditioning system failed. The air conditioning would erroneously blow through the defrost system. The vehicle was taken to the mechanic for inspection where the failure was located at the temperature control unit. The contact also stated that the temperature control unit was replaced twice prior to the recent failure. The manufacturer advised that they were aware of the failure and that the temperature control unit was on back order. The vehicle was not repaired. The failure mileage was 9,000 and the current mileage was 78,000.

- Chicago , IL, USA

problem #1

Jun 042013

Grand Marquis 8-cyl

  • Automatic transmission
  • 63,000 miles
The contact owns a 2010 Mercury Grand Marquis. The contact stated that the air conditioning unit failed and would only emit air from the defroster and under seat vents. The contact also stated that the trunk light illuminated even though the trunk was closed. The vehicle was taken to the dealer for inspection where they stated that the air conditioner and trunk latch needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 63,000. Updated 09/05/13

- Newtripoli, PA, USA

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