The ambient temperature was approximately -10 degrees Fahrenheit. I went to warm up my truck and turned on the rear window defroster. When I returned to my vehicle to drive to work I found that my rear window on the passenger side had shattered. I inspected the window for signs of vandalism but besides the spidering of the tempered glass there was no sign of any impact. After an extremely short google search I found this is one of the most common problems with the 2010 F-150. The complaints about this problem are so abundant it's become comical. Which is not a good thing Ford... you shouldn't be content with your product being a punchline.

- East Bethel, MN, USA

Driving my son to school on a cold morning with the rear defroster on. About 10 minutes into our drive we heard a very loud pop and my son noticed that the window behind his head had shattered. After researching this issue it seems to be fairly common among this year model with people describing the exact situations. Called Ford and they refused to do anything about it. Absurd that this defect and the related costs should be passed on to the consumer when it is an obvious issue with the truck.

- Lantana, TX, USA

On the morning of 12/29/14, he had a heavy frost so I used my rear window defrost on my drive to work. Drive was approx. 10 minutes. When I got out of the truck at work, all glass was ok. When I got back in truck to leave work, I looked in rear view mirror, I saw that the passenger side of the three piece rear window was shattered. The glass stayed in the frame and did not fall out. I had to spend over an hour on the phone with my insurance company just to file a claim, and it took the glass company two tries to install the new rear window and rewire it to make it work again. Ford knows there is a problem because they have changed the design on the window along with the wiring to the window. Why will Ford not step up and at least admit there is a problem with the rear defrost and offer to fix it.

- Tiffin, OH, USA

Rear passenger window (lite) shattered approx. Three minutes after rear defroster switched on. Vehicle has power sliding rear window. Outside temp. Around 20F. Started truck cold (ambient temp). Glass remains intact as of this writing.

- Lincoln, NH, USA

Started crew cab F150 FX4 and turned on interior defroster. Approx. 5 mins later, while still in park in the driveway, turned on rear defroster. 3-4 minutes later, while backing out the driveway, I heard a loud bang! I stopped immediately and exited the truck to see if I had hit anything. Because the car was not near anything other than the driveway, I proceeded out the driveway only to notice the rear, passenger side window (of three) had shattered. Window was still in place but completely shattered. Will be contacting Ford to find a remedy for this.

- Alexandria, VA, USA

Early morning left it running with heater and front defroster on. Ten minutes later I entered the veh & noticed that I had not activated the back defoggers. (I rarely use the back window defogger since I generally park indoors and to be honest I was not entirely sure where the button was located). I remained in the vehicle with the doors closed and the vehicle remained in park (not in gear). I a few moments passed when I heard a loud sound not unlike the noise made by a 22 caliber rifle shot. My truck is a F150 lariat w/crew cab w/ 3 piece window where the center section opens. All three window sections have defogger wires embedded within the glass. It was difficult to see what had happen due to the early hour and fogged windows but the far right (passenger side) back glass panel had literally shattered as tempered glass does. It maintained its surface and did not fall away thanks to the factory tint-coating. I'm told by the dealer this will cost over $900 to fix. I've talked to several glass companies. This is a well known problem that Ford seems to be unconcerned about. I contacted the dealer and Ford care but any good will seems to be in short supply and I get the impression that they are resisting taking responsibility for this problem to avoid the great responsibility of fixing this design defect in millions of trucks. My last Ford truck had the smoking/burning cruise control problem. I was told that was a random occurrence until I heard on the news about cars burning up due to bad cruise control units. Even then, the recall was years in coming and I ended up fixing that one too, also at my own expense. Is there any form of compensation or assistance available here that I may have missed? my dealer has offered no help and Ford care is worthless. I'd hate to say it but if I end up paying for this out of pocket, my next truck will not be a Ford.

- Hilliard, OH, USA

Approximately 2-3 minutes after turning on my rear defroster, the passenger side panel of the three panel rear glass shattered. Nothing struck the glass to cause this. Temperature outside was around 36* F, windows were slightly foggy, not covered in frost.

- South Bend, IN, USA

While driving into work, had the rear defrost active for roughly 10 minutes. At a stoplight, noticed smoke rising from outside of the rear window. As I proceeded to pull off the road, heard a loud bang and the passenger side rear window proceeded to spiderweb. The gasket for the rear window has been burned on the lower left hand corner (when observed from outside of the vehicle). It is apparent there is an issue with the rear heating element, as observed by the number of identical complaints on this site. I hope that Ford steps up and does something about this before someone actually gets hurt.

- Indianapolis, IN, USA

Passenger side rear window panel shattered with a loud bang when the rear defroster was turned on. There was a large 6 X 4" hole in the window and the balance was spider webbed. There was glass in the back seat and on the tonneau cover.

- Cecil, WI, USA

While stopped, heard a loud pop followed by the right rear window shattering. No evidence of impact to the outside of the window. Took the car to the Ford dealer, they said they have no idea why it broke, it is not under warranty and will cost over $900 to replace the rear power slider assembly. I contacted Ford: Thank you for your response, sarah. I am not sure how your response relates to my email. The rear window burst with no explanation while the vehicle was stopped, no apparent damage to the exterior of the window was observed. To have that assessed as "operating within Ford specifications" is concerning. I have done some research regarding this issue, and understand that my vehicle is not the only one to have this issue. Due to your (lack) of response, I will be filing a complaint this afternoon with the national transportation safety administration. My name is sarah, I am from Ford`S customer relationship center (crc). I have reviewed your email regarding the concerns on your 2010 Ford F-150. I apologize for any inconvenience this has caused. In an effort to assist you with this matter, we have contacted skyline Ford. According to their assessment your vehicle is operating within Ford specifications. Your dealership has factory trained technicians, comprehensive service information and specialized equipment to resolve your concerns. We concur with the dealership's assessment. If you require further explanation or the conditions change, please contact the service manager at the dealership. Sarah customer relationship center Ford Motor Company received: 10/22/2014 5:50 pm I purchased my F150 lariat on September 13, 2014. On October 18, 2014 while stopped, the right rear window of the power slider assembly popped and shattered. We could see no exterior damage to the window T(glad for the safety glass). Estimated cost $930.

- Salem, OR, USA

Turned defrost on rear power slider window and heard a loud explosion like a gunshot and the rear window on passenger side shattered. There are small pieces of glass in the bed of the truck and on the back seat. Temperatures were in the mild 30S at the time. This was a problem with the defrost causing the glass to shatter. Ford will not cover repairs or replacement of the glass. Mileage less than 30,000 miles. Truck also covered under extended maintenance plan but Ford will not cover it there either.

- Derby, VT, USA

I was pumping gas 50 degrees out and drivers side back window blew.

- Novi, MI, USA

Driver side pane of 3-paned rear window spider web cracked throughout the entire thing, from rear defrost overheating. While taping window up, I could feel tiny shards of glass falling off and sometimes cutting me.

- Lansing, MI, USA

Driving my 2010 Ford FX4 when I heard a pop from the rear. The back right rear window glass had "spider-webbed" and slightly shatter with glass falling from it.

- Abingdon, MD, USA

Approx 8:30 am temp near 20 degrees F. light snow falling. I turned my heated rear window and mirrors on. After 5 minutes of heating I smelled burning electrical components and then a loud "pop" noise from the rear of the cab. I immediately pulled to the side of the road and noticed that the passenger side of the three piece slider was completely shattered but in place. I called my local Ford dealership and they told me that glass breakage wasn't covered under any warranties especially at almost 90,000 miles. I did purchase the platinum extended warranty through Ford when new. After paying for the entire window and install myself... the local glass company installer stated that this was somewhat common with these trucks and they have replaced a few. I now don't use the heated windows/mirrors in fear of an expensive repair bill.

- Sheboygan, WI, USA

The contact owns a 2010 Ford F-150. The contact stated that the rear passenger's side window became shattered without warning. The contact mentioned that the failure had occurred once before. The vehicle was taken to the dealer where the technician was unable to determine what caused the failure. The manufacturer was made aware of the failure. The vehicle was not repaired. The failure mileage was 20,000 and the current mileage was 31,000.

- Sandusky, OH, USA

The rear window defroster on my power sliding rear window caused the driver side rear window glass to shatter while the vehicle was warming up in my driveway. The defroster had been in operation only 2-3 minutes when a loud bang was heard while I was re-entering the vehicle. I looked for impact damage to the roof, tailgate, etc but nothing seemed unusual, and there were no other people in the vicinity. The damage was not readily visible until I returned to the vehicle in the afternoon, got in, and looked in the rear view mirror time: 4:30am weather conditions: 28 degrees, clear sky, light frost on windows, no precipitation in prior 48 hours. An auto glass installer and a body shop owner both confirmed no sign of any impact damage. A brief internet search of Ford owner's forums revealed multiple owners experiencing shattered glass, melted window frames etc. When using the rear defroster on 2010 F-150 trucks with power sliding rear window. At lease four of these incidents have taken place in the past three months. (Jan-Mar. 2014).

- Hammond, IN, USA

For no apparent reason, the rear window has shattered.

- Beverly Hills, MI, USA

The contact owns a 2010 Ford F-150. The contact stated that the rear window suddenly shattered. The vehicle was not diagnosed or repaired. The manufacturer was not contacted about the failure. The failure mileage and VIN was not available.

- Garden City, MO, USA

This a double entry complaint: I was driving home from work late at night when I heard a bang off the rear window of my F-150. As I was passing under an active railroad viaduct at the time I figured something had fallen off and hit me. I wasn't able to determine any damage at the time as it was very dark in a poorly lit section of freeway in downtown detroit. The next day I walked out to my truck and noticed the rear window on the passenger side looked funny. I got in my seat and noticed the window was shattered. The only thing holding it together was the heater element and the privacy glass film (both factory installed). I filed the usual insurance claim and had it repaired. This past Saturday (15 Feb 2014) I walked out to my truck to head to work, got in and saw that the drivers side of the rear window was now shattered. It was fine when I parked it after work. Backed into my usual parking spot with no trees above the vehicle, too snowy and cold for kids to be playing outside in the lot or field behind the truck. Now working with insurance to have this one repaired.

- Rochester Hills, MI, USA