Timing Tensioner problems of the 2012 Ford F-150

When starting truck when hasn't been driven for several hours engine makes a loud growling noise for about 5 seconds before sounding normal. It had done it occasionally before 02/2019 but now does it daily. Some research on other forums that it is the tensioner on the timing belt. Truck with this low mileage should not be having these issues. Any input?.

The ses, service engine soon, light came on. I noticed my truck lacking power and taking longer to shift gears when accelerating. It become less of a smooth shift and more jerky. When traveling on the highway at ~70 mph, the engine would not hold 6th gear. It would drop to 5th and 4th gear, until I gave it more gas. It would reach 3500 rpm's at times before shifting which was not normal. I also noticed starting in the fall of 2016 a short loud abnormal noise at cold start. After researching these issues, this led me to TSB 14-0194, code p0016, dealing with the 3. 5l ecoboost engine. I took my truck to my local dealer and this was the issue. I have been the only owner of less than 5 years and was at 75,500 miles, out of the 60,000 mile warranty. I just had the repair done, costing me $3600. The repair included parts listed in TSB 14-0194 as well as timing belts, additional gaskets, seals, guides, tensioner, cam, sprocket, gear crankshaft, among others. I question how this known issue of timing chain stretch with the TSB is not a recall. This problem can cause an accident when accelerating on to a freeway. It can also cause an accident by suddenly downshifting while driving. I am glad my truck is fixed, however did not like the price tag. I fear that this known issue will lead to a deathly accident and it is unfortunate that a recall has not been issued yet. I hope this post helps make a change, saving consumers a costly repair and even someones life from a future accident.