Defroster/defogger/hvac System Problems of Ford F-150

The contact owns a 2017 Ford F-150. The contact stated while her husband was driving 5 mph out of the driveway, there was an abnormal burning odor coming from the vehicle. There were no warning lights illuminated. The contact's husband then heard an abnormal sound coming from the vehicle and the rear window cracked. The contact called an independent mechanic and was informed that the defroster had heated up and cracked the rear window. The vehicle was not diagnosed by an independent mechanic or the dealer. The local dealer was contacted; however, the vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 120,000.

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I recently purchased a new 2023 Ford f150, xl trim, crew cab truck. This weekend on a trip, the vehicle's air conditioning began to malfunction. After operating for less than an hour and without adjusting the fan motor speed, the volume of air coming out of the vents gradually decreases to nothing and the cab of the vehicle begins to warm. With only 350 miles on the vehicle, I pulled off of the road, turned off the engine, and let the vehicle set for 20 minutes, hoping everything would reset. After the 20-minute period, I started the vehicle and the ac seemed to be working as it should. After driving another 20-30 minutes, the cab began to warm again and upon checking the air coming from the vents, it was minimal to none. I turned up the fan to max speed and the volume of air coming from the vents remained minimal and the temperature in the cab continued to rise. This time I turned the system ac off (no compressor) and left the fan on to bring in outside air in hopes of dropping the cabin temp. Immediately after turning the ac system off the air flow from the vents increased to a normal level. After operating with the ac off for 20 minutes, I turned the ac back on and the system, and yet again, the ac system operated as it should. This went on for my entire 8-hour trip. Not only an uncomfortable inconvenience, but this issue could also be safety issue (visibility) when depending on the vehicle's defog/defrost system as the ac system (compressor and condenser) is used for defogging/defrosting the vehicles windows. A similar issue has been noted in previous year models under Ford tech service bulletin 22-2089. Being my issue is duplicated in the issue section of the service bulletin, the year model of my vehicle is not included. In performing some internet research, it seems that many owners of 2023 Ford f150 models are experiencing this exact issue. This issue does not cause panel lights to illuminate. Currently awaiting call back from Ford dealer.

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The contact owns a 2016 Ford F-150. The contact stated that the rear window defroster failed to operate as needed. There was no warning light illuminated. The dealer was notified of the failure and the contact was informed that the dealer did not have the equipment or capability of repairing the vehicle. The contact was then referred to an independent mechanic who provided an estimate for the repair. The manufacturer was notified of the failure and referred the contact to the NHTSA hotline. The vehicle was not repaired. The failure mileage was approximately 56,000.

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The contact owns a 2017 Ford F-150. The contact stated that while driving at an undisclosed speed and upon activating the rear window defroster, she observed smoke filling the interior of the vehicle. After a visual inspection of the rear window, the contact observed the rear window lower wire cover on fire. After turning the vehicle off, the fire extinguished on its own, after which the rear window shattered. Emergency services were not called. A fire report was not filed, and no injuries were reported. No warning lights were illuminated. The vehicle was towed to the dealer, who determined that the rear defroster wiring had shorted, causing the wiring to catch fire. The vehicle was repaired. The manufacturer was notified of the failure but referred the contact to the NHTSA hotline for assistance. The failure mileage was 106,000.

The contact owns a 2021 Ford F-150. The contact stated that the infotainment screen failed to operate as needed. Due to the failure, the back over protection camera and defroster system failed to operate. The dealer was initially notified of the failure and informed the contact that the parts for the repair were on backorder. The manufacturer was also notified of the failure and the contact was provided the same information as provided by the dealer. The vehicle was not repaired. The failure mileage was approximately 32,000.

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The contact owns a 2012 Ford F-150. The contact stated while driving 70 mph with the defroster engaged, the contact heard a loud popping sound coming from the rear of the vehicle. The contact noticed that the rear passenger's side window had shattered. The contact was able to continue driving. The dealer and the manufacturer were not notified of the failure. The vehicle was not diagnosed or repaired. The failure mileage was approximately 149,000.

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I went to wipe the black glass with wet cloth. And the defogger gridlines wiped off. Apparently they had overheated and became delaminated. This could be a sever over heating and could cause have caused the rear glass to explode /shatter. Looking through the internet this is common issue on f150s.

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The contact owns a 2012 Ford F-150. The contact stated while using the defroster, the rear windshield shattered. The contact stated no warning light was illuminated. The contact took the vehicle to a glass repair shop and was informed that the rear windshield needed to be replaced. The contact called and notified the local dealer of the failure. The vehicle was not repaired. The manufacturer had not been informed of the failure. The failure mileage was approximately 91,000.

The contact owns a 2013 Ford F-150. The contact stated that the remote start was used start the vehicle and activate the defroster however, the rear windshield defroster shattered the rear windshield. The contact informed oxmoor Ford Lincoln (100 oxmoor ln, louisville, ky 40222) of the failure however, no assistance was offered. There was no recall for the defroster. The windshield was not repaired. The manufacturer was not informed of the failure. The failure mileage was 180,000.

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The contact owns a 2016 Ford F-150. The contact stated that while operating the vehicle, the backup camera and vehicle alert system would intermittently malfunction causing a visibility and safety hazard for the driver while in reverse. Also, the defrost system was intermittently faulty. The vehicle was taken to the local dealer who diagnosed that the failure listed was due to a faulty accessory protocol interface module (apim) computer system and the system needed to be replaced. The vehicle was not yet repaired. The manufacturer was notified of the failure, but no assistance was offered. The failure mileage was 75,000.