The contact owns a 2011 Ford F-150. The contact stated that the rear defroster was activated and the rear window shattered. The vehicle was repaired by an independent mechanic. The manufacturer was notified of the failure and informed the contact to notify the insurance company. The dealer was not contacted. The failure mileage was approximately 94,200.

- Hopskins, MI, USA

The contact owns a 2011 Ford F-150. When the vehicle was started, the rear window defogger button was pushed and the indicator illuminated and then turned off. The contact pressed the button again. On the third time the button was pressed, the contact heard a loud bang and the rear window shattered. The dealer (dean arbour Ford, 3382 M-55, West branch, mi 48661) was contacted by phone and the contact was awaiting their decision. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 100,000.

- West Branch, MI, USA

The contact owns a 2011 Ford F-150. After turning on the rear window defroster, a loud banging sound was heard. The following day, the contact discovered that the rear window had shattered. The contact indicated that the failure occurred a day after freezing rain was present in the area. The failure was not diagnosed or repaired. The local dealer (wehr Ford in marshfield, mo) was notified of the failure. The manufacturer was not notified. There were no injuries, but the contact was concerned of the risk of an injury due to the shattered glass. The VIN was not available. The failure mileage was 90,000.

- Seymour, MO, USA

The contact owns a 2011 Ford F-150. The contact stated that the driver's side rear window shattered when the rear window defogger was turned on. The defogger light went off. The contact called the frederick motor company (800-734-9118, 1 waverley dr., frederick, md, 21702) and the technician referred the contact to an independent auto glass shop. However, the independent mechanic stated that the failure was a known issue and referred the contact back to the dealer. The vehicle was taken back to the dealer but no diagnosis or repairs were completed. The manufacturer was made aware of the failure but offered no further assistance, stating that the failure was not covered by the warranty. The failure mileage was approximately 73,000.

- Frederick, MD, USA

The contact owns a 2011 Ford F-150. When the rear window defroster was activated, the rear window shattered. The dealer and manufacturer were not notified. The vehicle was not diagnosed or repaired. The VIN was unknown. The failure mileage was 65,000.

- Seattle, WA, USA

The contact owns a 2011 Ford F-150. After the rear window defroster was activated, the passenger side of the rear window shattered. The contact noticed that the casing of the heating element and the shattered area of the window contained burn marks. The vehicle was not diagnosed or repaired. The manufacturer was not notified. The VIN was unknown. The approximate failure mileage was 80,000.

- Bend, OR, USA

Rear window shattered when rear defrost was running. Defrost had been running for 10 minutes. Very loud pop while I was driving on the interstate.

- Johnston, IA, USA

The contact owns a 2011 Ford F-150. While the vehicle was in reverse, the contact turned on the defrost and the rear window shattered. The failure occurred without warning. The vehicle was diagnosed nor repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 71,000.

- Gillette, WY, USA

The contact owns a 2011 Ford F-150. After the rear defroster was activated, the rear windshield shattered without warning. The vehicle was not diagnosed nor repaired. The manufacturer was notified of the failure. The failure mileage was 42,000. The VIN was not available.

- Ponawanba, NY, USA

The contact owns a 2011 Ford F-150. While driving 65 mph, the rear windshield of the vehicle shattered. The vehicle was taken to the dealer where it was diagnosed that the rear defroster may have shorted out, causing the glass to shatter. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was 81,600.

- Clarksville, TN, USA

The contact owns a 2011 Ford F-150. The contact stated that the rear defroster failed to work properly. The failure caused the rear window to fog, which diminished the contact's visibility. The failure recurred multiple times. The vehicle was not diagnosed or repaired. The manufacturer stated that there were no recalls on the vehicle. The approximate failure mileage was 30,625.

- Forest Lake, MN, USA

The contact owns a 2011 Ford F-150. The contact stated that the rear window shattered as the defroster was activated. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure. The approximate failure mileage was 15,562. The VIN was unavailable.

- Middleport, PA, USA

Truck was parked in driveway on a cold 20 degree morning and when the rear defrost was activated the rear cab window cracked and spiderwebbed most likely due to the heat from a defective heating element in the defrost system.

- Orting, WA, USA

The contact owns a 2011 Ford F-150. The contact stated that the heat from the defroster caused the rear window to fracture. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 22,000. Updated 12/22/14 updated 9/28/2015

- Englewood, NN, USA

We started having issues with the rear defroster not working on the power sliding rear window. After a short period of time after pushing button to power the rear defrost smoke was noticeable coming from the lower part of the rear window on the passenger side of the cab. I then pushed the rear defrost button to turn off the power looked back into the rear view mirror to see if the smoke would stop and saw the window fracture as I was looking at it.

- Yelm, WA, USA