My 2009 Caliber (SXT) has the same issues. I did buy it used in 2012 with 38K on it. About a year after having it, I was making a long drive up 395 through the desert, in September. About 2 hours into my drive, the sensor came on and the car made this terrible 'whining' noise, just before it dropped down to 15mph and would not let me accelerate any faster. Similar to the other posts, I had to sit there in 90 degree heat and let it "rest" for about 20 min. I headed back on the road, and about 45 min into my drive it did it again... and 2 more times before I made it to my destination. Took it to a good mechanic near my house. I refuse to take it to the dealer, what a rip off! Anyways, they did try to get a read on the codes that were coming up, but they couldn't determine exactly what it was. There were a few other issues with the car, such as some of the wiring and other electrical issues. The car was perfectly fine, I typically don't drive more than 30 miles a day, so I'm sure that helps. About 2 weeks ago, it started making this loud squeaking. Every time I accelerated from an idle or from really low speeds, there was a hesitation (I guess that's what we can call it) just before it shifts into gear. Took it into my dad's mechanic yesterday, who is very reputable and trusted. The initial problem was the alternator, it pretty much took a dump, which I know is not uncommon for these cars. They also stated that there was a PCM issue and that Dodge issued a recall stating that the circuit board may have broken, which can cause the engine to stall without warning. Not sure if this might be part of the overall problem, since it is an electrical issue. Unfortunately without them replacing the alternator, they can't get an accurate read. Alternator is being replaced today, so hopefully I'll get some more info on this transmission overheat sensor. Looks like I'm not alone here either. Where is the recall for this faulty transmission issue Dodge?! I'll post an update once I get more info...