Problems · NHTSA complaints

2009 Ford Flex problems

Owners filed 181 complaints about the 2009 Ford Flex with NHTSA between Mar 2009 and Jul 2026. The most-cited component is engine (36).

Complaints
181
Filed with NHTSA
Crashes
7
Reported by owners
Fires
2
Reported by owners
Injuries
6
People reported injured
Deaths
0
Reported to NHTSA
01 —By component

Complaints by component

One complaint can cite several components
  1. Engine36
  2. Electrical system32
  3. Power train23
  4. Steering18
  5. Engine and engine cooling17
  6. Service brakes, hydraulic16
  7. Fuel/propulsion system15
  8. Service brakes14
  9. Structure12
  10. Electronic stability control (esc)10
  11. Suspension9
  12. Vehicle speed control8
  13. Air bags6
  14. Wheels5

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.

Data from NHTSA Complaints API · synced Nov 7, 2026NHTSA vehicle page
02 —Trend

When complaints were filed

Does it get worse with age? Complaints per calendar year filed
View as table
Model yearComplaints filed per calendar year
200911
201020
201114
201210
201313
201424
201518
201612
201711
201814
201917
20207
20213
20222
20232
20240
20252
20261

Mileage at failure isn’t a structured field in NHTSA complaint data, so we don’t chart it. Some owners mention it in their reports below.

03 —Owner reports

Top problems in owners’ words

Verbatim from NHTSA complaints, newest first

Engine

36 reports1 fire
“About 5 miles from home with no warning.The car went from regular temp to hot then stopped.Water mixed with the oil.The tech said the water pump just failed.I did not have any problems with it running hot or anything.”
Owner complaint to NHTSAFiled Jun 16, 2022EngineODI 11469695

Electrical system

32 reports1 fire
“You can be driving down the road, and all your gauges will stop working, and all the warning lights on the dash will light up. The first time this happened my wife got stuck at a gas station all the warning lights were on and the car would not start, people tried to jump it and it would not affected at all. I looked on the internet and found were someone said to beat on the passenger side floorboard, I called my wife and told her to try that, and when she did the car would start. It doesn't do it all the time, you never know when it's going to happen. We have to just stomp on the passenger floor to get everything to start working again. If I had not found this information from somebody else on the internet my wife would have been stuck about a hundred miles from home. I've taken it to the Ford house and they say they've never heard of anything like this but I know it's happened before two other people that's how I knew to stomp on the floorboard on the passenger side.”
Owner complaint to NHTSAFiled Dec 9, 2025Electrical system, Unknown or otherODI 11704068

Power train

23 reports1 crash
“My Flex has repeatedly lost power while driving. I can feel the car lose power, and the yellow wrench light comes on. After reading up on it, I learned that you have to turn the vehicle off, wherever you are, and restart it after a few minutes. The wrench light turns off, and the car runs as normal, with no records of codes. This is talked about over and over in online forums. The safety issue is that it has happened on the freeway several times while traveling at a high rate of speed. The car loses power, and you cannot accelerate. You have to find a way to stop immediately, put the car in park (and listen to the transmission clunk) and turn it off. This last instance put me in harms way on the freeway. The car lost power while traveling 70mph. I immediately lost speed and had to cross 3 lanes of traffic to pull over to turn the car off. All of the forums talk about the throttle body, but everyone says that’s not the issue. The OSS and TSS sensors are also discussed. The dealerships cannot find out what’s wrong because once the car is turned off and restarted, any codes are erased. The issue persists, and the car keeps losing power wherever and whenever. I am…”
Owner complaint to NHTSAFiled May 19, 2021Power train, Vehicle speed control, EngineODI 11417809

Steering

18 reports1 crash
“Was driving and the steering wheel became stiff. I received no warnings indications or lights on the dash. I had to give it a hard turn to get it to a parking lot and have it towed to a dealership.”
Owner complaint to NHTSAFiled Apr 22, 2023SteeringODI 11518395

Engine and engine cooling

17 reports1 fire
“TL*THE CONTACT OWNS A 2009 FORD FLEX. THE CONTACT STATED THAT WHILE DRIVING AT 5 MPH, THE COOLER FAN FAILED TO OPERATE. AS A RESULT, THE VEHICLE OVERHEATED AS THE RADIATOR WARNING LIGHT ILLUMINATED. THE FAILURE RECURRED TWICE. THE VEHICLE WAS TAKEN TO DEALER. THE TECHNICIAN DIAGNOSED THAT THE COOLING FAN NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 55,000.”
Owner complaint to NHTSAFiled Jan 23, 2015Engine and engine coolingODI 10678602

Service brakes, hydraulic

16 reports
“The contact owns a 2009 Ford Flex. The contact stated that after refueling the vehicle, the odor of fuel was present coming from the vehicle. After parking inside the garage, there was fuel leaking from the seam of the fuel tank on the passenger’s side. The cause of the failure was not yet determined. Also, while attempting to stop the vehicle, the brake pedal would extend to the floor and the vehicle would not immediately stop. The contact determined that the brake booster was faulty and needed to be replaced. The vehicle was not yet repaired. The manufacturer and an unknown dealer were notified of the failure. The failure mileage was approximately 160,000.”
Owner complaint to NHTSAFiled Jul 19, 2021Service brakes, hydraulicODI 11425398
Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 7, 2026

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.