YearToAvoid

2010 Mercury Mariner Electrical System Problems

NHTSA lists 30 electrical system complaints for the 2010 Mercury Mariner, 11% of its 270 total complaints for the year. Owners report sudden stalling, throttle body faults, and lighting failures, with a median failure mileage of 58,500 miles. No related recall is on file.

Electrical System complaints
30
11% of 270 complaints
All complaints this year
270
Crashes reported
1
Fires reported
1
Injuries reported
2
Median mileage
58,500 mi
Related recalls
0

Typical electrical symptoms owners report

  • Vehicles suddenly lose power or shut off while driving at highway speeds, sometimes going into a limp or safe mode with a warning light.
  • Owners describe the engine stalling or losing throttle response at intersections or in traffic, requiring the vehicle to be restarted.
  • Headlight, taillight, or brake light bulbs and assemblies fail or melt, in one case followed by a fire shortly after a bulb change.
  • Some owners report the vehicle failing to start due to ignition cylinder or lock module problems.
  • One complaint describes the steering going stiff as the car shut off, leading to a crash.

When 2010 Mercury Mariner electrical complaints were filed

First complaint Aug 5, 2012, latest Sep 8, 2025.

2010 Mercury Mariner electrical system complaints: complaints filed per month3Aug 2012Sep 2013Apr 2014Oct 2014Jun 2015Dec 2016Oct 2018Jun 2022
30 complaints filed with NHTSA from Aug 2012 to Sep 2025; peak Jul 2013 (3).

Electrical System recalls for the 2010 Mercury Mariner

No safety recalls on record for this model year.

Electrical System complaints by Mariner model year

Raw complaint counts per model year; newer years have had less time to accumulate complaints.

  1. 200511 (16%)
  2. 20065 (8%)
  3. 20077 (21%)
  4. 200828 (6%)
  5. 200923 (7%)
  6. 201030 (11%)
  7. 20116 (7%)

Frequently asked questions

How common are electrical system complaints on the 2010 Mercury Mariner?
NHTSA lists 30 electrical system complaints for the 2010 model year, which is 11% of the 270 total complaints filed for that year.
Is there a recall for electrical problems on the 2010 Mercury Mariner?
No related recall is listed in NHTSA data for the electrical system on the 2010 Mercury Mariner.
At what mileage do electrical problems typically show up on the 2010 Mariner?
The median mileage at failure for electrical system complaints is 58,500 miles.
What kinds of electrical failures do owners report most?
Owners most often describe sudden stalling or loss of power while driving, throttle body issues that trigger limp mode, and failing exterior lights, including one case tied to a fire.
Were there any crashes or injuries linked to these complaints?
NHTSA data for this problem area on the 2010 Mariner includes 1 crash, 1 fire, and 2 injuries among the 30 complaints filed.

Sources: NHTSA Office of Defects Investigation complaint and recall databases; U.S. EPA fuel economy data; NHTSA 5-Star Safety Ratings. Complaints are unverified owner reports.

Data updated Sep 24, 2026. Read the methodology and data sources. The Complaint Index is based on NHTSA owner complaints and recalls; it is not a reliability rating.