Hi;
First of all, let me say this. If you overcome the overheating problem, I guess that your troubles related to tiptronic gears will pass. I had a problem with the transmission. The clutches were damaged following the overheating of my transmission oil due to the LPG system I connected to my car, splitting the cooling water line, and I had to make the transmission revision. He said that the service lpg line reserved the tanned part of the coolant for lpg, and the remaining part would not be enough to cool the gearbox, so the clutches were damaged due to use. My master, who assembled lpg, is very professional and a number in opium said that the situation in question is not related to lpg, but will change the direction of the installation as they want. From my research, I wanted an automatic transmission overhaul in peugeot vehicles at an average of 90 thousand km. As a result, the service conveyed to me as follows. We traveled for a long time depending on the machine. Whatever the temperature of the vehicle is, the transmission oil is 10 degrees more than the temperature in question. So when your car is at 100 degrees, the gearbox oil temperature is 110 degrees. Strangely enough, the temperature of the gearbox oil would not exceed 110 degrees. So this means that your oil is bubbling as your car overheats. When the maximum temperature reaches 125 degrees in the transmission, it says that it will cause major damage that requires revision in the lap of the service. Solve the heat problem as soon as possible because you are losing the gearbox slowly. I hope everything will be fine. Respects..