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Electrical systemPart report

2006 Mercury Mariner Electrical system Problems

Complaints
4about this part
Share
6%of 63 total for the year
Median mileage
125,500miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 4 complaints about the electrical system of the 2006 Mercury Mariner, 6% of the 63 complaints for this model year. Where a mileage was given, the median is 125,500 miles.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“The gear shift is not properly shifting. It goes from park to reverse on its own. Sometime it wont reverse and makes a loud noise. It click back and forth between gears. Ive replace the switch to see if that would work but it doesnt. Please let me know if I can do anything to fix this problem but it is the same recall 15v606000 for other vehicals of the same type”

NHTSA complaint #11296840, filed 2020-01, 190,000 miles

“Tone ring snapped off of axle and caused the car to go into 2wd and apply the ABS brakes when not actually being needed which almost ended up in rear ending a car when the failure occurred. Tone ring design needs looked it. This should not happen. Corrosion building up between the tone ring and axle seems to be what caused the force of snapping this ring. Just a poor design.”

NHTSA complaint #10622413, filed 2014-08, 145,000 miles

“The contact owns a 2006 Mercury Mariner. While driving approximately 5 MPH, the vehicle stalled and the pull over warning indicator illuminated. The vehicle was towed to the dealer where it was diagnosed that the high voltage battery needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The VIN was unknown. The approximate failure mileage was 40,000.”

NHTSA complaint #10851084, filed 2016-03, 40,000 miles

“The contact owns a 2006 Mercury Mariner. The contact stated that while driving approximately 25 MPH, the vehicle stalled without warning. The vehicle was towed to an independent mechanic who diagnosed that the alternator failed and needed to be replaced. The vehicle was repaired; however, the failure recurred. The vehicle was towed to the dealer who diagnosed that the transmission and torque converter failed and needed to be replaced. The vehicle was not repaired. The contact stated that the VIN was not included in NHTSA campaign number: 14v526000 (hybrid propulsion system). …”

NHTSA complaint #10670977, filed 2015-01, 106,000 miles

Related service bulletins

Electrical system: other model years

YearComplaintsShare of year
201167%
20102911%
2009227%
2008276%
2007721%
200646%
20051015%

Other parts of the 2006 Mercury Mariner

Vehicle speed control
13 complaints
Transmission and drivetrain
11 complaints
Steering
9 complaints
Brakes
8 complaints
Engine
8 complaints
Suspension
8 complaints
Fuel system
6 complaints
Other or unknown
5 complaints
Body and structure
5 complaints
Air bags
3 complaints
Tires
3 complaints
Engine cooling
2 complaints

← All problems reported for the 2006 Mercury Mariner

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology