Which parts fail
Components named in complaints (air conditioning, heater, defroster, HVAC controls).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2014 Ford F-150 owners, lightly cleaned up (personal details are redacted by NHTSA).
Truck downshifted today while doing 57 mph, speedometer went to 0, rear tires locked up sending truck into spin on i 35 southbound in lewisville texas. Striking another car and hitting concrete barrier. Road was wet, no shoulders.
I was driving with my defrost on front and rear windows at night time. I was stopped at a light when I heard a loud bang followed by a crackling noise. I safely found a spot to park close by and inspected if anything hit my truck. Nothing. My rear window on my cab was completely shattered. No evidence of anything hitting it. My truck bed was completely empty and had the canopy on. There was nothing in between the rear truck and canopy. What the heck? Had to be the rear defrost. There are multiple stories on the internet just like mine, with zero recall!!!! Ford make this right. Now I'm out 780.00 due to Fords faulty defrost wiring.
2 complaints 1st was my back window spiderwebbed without being hit when it was super cold in wisconsin on Dec 22 2022. It was a loud bang really startled me and I had no clue what happened until the next day. 2nd my wipers will turn on by them self sometimes and there is no intermittent wipers just the medium speed where there is no hesitation or delay.
Unknown. Rear window suddenly shattered cause may be from defroster system. I've been reading several other drivers having the same issue with their rear window suddenly shattering when having the defroster running
Back window shattered for unknown reason. The back window on my truck just shattered for reasons unknown. After doing some research this is a known issue with f150 trucks. The back window has a defroster installed
Tonight I was using my rear defrost on my F-150 and I noticed the glass looked weird. Got out and my worst fear was true the back glass had shattered. I have only owned this truck since April I'm the second owner.
Tl* the contact owns a 2014 Ford f-150. The contact stated that upon dropping his child off at school, the contact heard a loud, abnormal popping sound. Upon investigation, the contact became aware that the rear driver's side glass had shattered into several pieces. The contact drove the vehicle back to his residence. The contact stated that the heating system in the rear defroster overheated which caused the glass to shatter. The vehicle was taken to mel hambelton Ford (11771 w kellogg dr, wichita, ks 67209) and the contact was informed that the VIN was not under recall. The contact was provided an estimate for the repair of the glass. The manufacturer was notified of the failure. The vehicle was not repaired. The failure mileage was approximately 119,000.
Tl* the contact owns a 2014 Ford f-150. The contact stated upon starting the vehicle, the rear window defroster was activated. The vehicle was left running to warm up the vehicle. The contact stated that while reversing out of the driveway, the rear driver's side window (of the three part window) fractured. The vehicle was taken to westfield Ford inc. (6200 south la grange road, countryside, il 60525, [phone]) where the dealer stated that the vehicle was out of warranty and would not assist with any repairs. The manufacturer was notified of the failure. The approximate failure mileage was 35,000.
Tl* the contact owns a 2014 Ford f-150. While driving, a popping noise was heard inside the vehicle moments after the rear defroster was activated. The contact discovered that the rear driver's side window had shattered. The vehicle was taken to mike castrucci Ford (7400 alexandria pike, alexandria, ky) where it was determined that the entire rear window assembly needed to be replaced. The cause of the failure was not determined. The vehicle was not repaired. The manufacturer was notified of the failure, but no assistance was offered. The failure mileage was 31,000.
Tl* the contact owns a 2014 Ford f-150. The contact stated that while the vehicle was stopped, the contact attempted to activate the rear window defroster however, the system failed to operate as designed. The contact stated that visibility out of the rear window was impaired. Mike reichenbach Ford Lincoln (600 n coit st, florence, sc 29501; [phone]) was contacted and informed of the failure however, no assistance was provided. The vehicle was not diagnosed nor repaired. The manufacturer was informed of failure. The failure mileage was approximately 17,500.
AC & Heater complaints in other F-150 years
Frequently asked questions
How common are ac & heater problems on the 2014 Ford F-150?
NHTSA has 23 complaints about the a/c & heater of the 2014 Ford F-150, 1% of the model year's 1,538 complaints. The component named most often is defroster/defogger/hvac system › rear window (18 mentions).
Is there a recall for 2014 Ford F-150 ac & heater problems?
No. NHTSA lists no a/c & heater recall for the 2014 Ford F-150, though it has 8 recalls for other components. If the problem is widespread, a repair may still be covered by an extended warranty or a manufacturer service bulletin — ask a dealer.
At what mileage do 2014 Ford F-150 ac & heater problems start?
Half of the complaints with a recorded mileage happened before about 64,000 miles, and 29% before 25,000 miles.
Is it dangerous?
Owners linked 1 crash, 0 fires and 1 injury to a/c & heater problems on this model year. If you notice symptoms, have the car checked before driving further.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.