Interesting "gearbox failure" problem

Hello there. My vehicle is 2012 model 1.6 e-hdi automatic 3008. I also experience the gearbox failure that many people encounter. But the interesting thing is; normally it does not give any warning. Even if I use it for hours in the city, there is no problem. I start to get this warning when I use it above a certain speed (around 120 km) for about 1 hour on a long road. In other words, when there is no situation to tire the transmission. Moreover, this warning pauses for 1-2 seconds at most. Warning light goes off. After a few minutes, it warns again and disappears. There is no difference in gear shifts either. My master gave a system warning to the robotized system when he connected it to the device. But he was also surprised that the gear shifts were smooth. If I change parts in this way, I will cost about 10-11 thousand TL. Could there be another problem? Has anyone met?

First of all, greetings. My car model is pegeout 207, 2009 model semi-automatic Bi vehicle, all of the complaints you call a car were in my vehicle. Let me tell you the exact result. Give it a try. I had these complaints about 7 8 months later, a friend who was dealing with the software business gave me the following advice. I poured hot water on the negative and positive poles of the vehicle's battery, then I cleaned it with a small sandpaper and applied grease to the headers (if possible, you can change the terminals if they are rusted), then check if there is a leak in the battery. I disassembled the normal light bulb and the problem was solved. However, he told me that the reason for the problem was the lucky 7 8 thousand lira cost. The friend who threw this software said that these works give these instantaneous errors because the battery cuts completely related to the battery. Then he connected to the car with the pc and reset the errors. Thank God the problem was solved. Bayadır Bi I did not have a problem with a problem. I even told the gearbox the man was surprised that the problem was solved. Readers benefit from it, I hope you try, you will not lose anything 8 10 thousand lira instead of giving. Hello everyone ...

I will definitely try. I hope I survive this way. I also have a suspicion that he is a leak. Every time I turn on the ignition it says Eco mode or something. It may be due to leakage. Thank you very much 🙏