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Engine coolingPart report

2010 Ford Flex Engine cooling Problems

Complaints
8about this part
Share
6%of 139 total for the year
Median mileage
15,750miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 8 complaints about the engine cooling of the 2010 Ford Flex, 6% of the 139 complaints for this model year. Where a mileage was given, the median is 15,750 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.

“My 2010 Ford FLEX station wagon has serious problems with allowing exhaust fumes to enter the rear of the vehicle when accelerating onto the highway, when passing a car or with all of the windows open. These vents sense the balance in pressure and open when they should not. I have taken my car to two different Ford dealerships for the same problems. Four separate times the service managers and mechanics have told me that this is new problem and I am the only one they have heard of with this exhaust leaking into the vehicle. …”

NHTSA complaint #10409185, filed 2011-06, 9,000 miles

“Going into a turn at approx. 25 MPH and my Ford FLEX shut off. Lost power steering and power brakes. Put it in neutral and restarted. Have approx. 11,500 miles on the car. This is the only time this has occurred.”

NHTSA complaint #10313072, filed 2010-02, 11,500 miles

“Engine shuts down on a rolling stop, first incident rolling stop on a stop and go traffic second incident rolling stop to a stop light third incident slowing down to make a turn.”

NHTSA complaint #10446709, filed 2012-02, 20,000 miles

“After owning the new vehicle for three months it started randomly slipping into neutral. At first, it did this when accelerating from a stop (which is very dangerous in busy intersections, left turns and merging). It now does it then and in addition at highway speeds - 50+. It also at times has engine surges when at a complete stop. It also surges and hesitates at 45mph to highway speeds, at times causing such a speed variance that it will shut cruise control off, slip into neutral and rapidly decelerate before correcting itself. There have been 5 repair attempts at a Ford dealership. …”

NHTSA complaint #10426713, filed 2011-09, 30 miles

“The contact owns a 2010 Ford FLEX. While driving approximately 60 MPH, the vehicle stalled. No warning indicators were illuminated. The vehicle was taken to a dealer where it was diagnosed that the engine air filters needed to be cleaned. The vehicle was not repaired. The manufacturer was not notified of this issue. The failure mileage was 52,843. The VIN was unavailable.”

NHTSA complaint #10661652, filed 2014-12, 52,843 miles

Related service bulletins

Engine cooling: other model years

YearComplaintsShare of year
201921%
201611%
201462%
201341%
201175%
201086%
2009179%

Other parts of the 2010 Ford Flex

Steering
32 complaintsEngine
30 complaintsBrakes
16 complaintsFuel system
16 complaintsElectrical system
13 complaintsTransmission and drivetrain
12 complaintsOther or unknown
10 complaintsVehicle speed control
9 complaintsAir bags
8 complaintsSuspension
5 complaintsVisibility (wipers, defrost, mirrors)
5 complaintsSeats
4 complaints

← All problems reported for the 2010 Ford Flex

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 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