problem with the TFT Sensor

[KEVOZS8]

he welded the new sensor on the harness i am sure because i was present when he did it . and we put the scanner on and he read about 22 degrees Celsius . I have also changed only the oil about 7 liters i drove the car and i pushed it hard and it was running great for 4 days then it appeared again and began to do the same problems .

[tozoM8]

You need to check/clean the wire connector on the front of the trans right above the trans pan. I would also check the TCU connector for corrosion. If the temp sensor wire is dirty it will throw a code and keep the TC open.

[KEVOZS8]

Ok Thanks i will check it and let you know !

[KEVOZS8]

Just one more question if the voltage of the Battery is high or low Should i get this fault(P0711) or its not related ? because my battery (VARTA OEM) is 4.5 years old .i checked it twice and its giving between 13.1 while the engine is off and around 14 when the engine is on with the CD radio AC Lights on . i am guessing also from the electronic because the electronic light on the dashboard when i turn on the engine it stays on more then it does before then turns off . I informed my mechanic and he told me that this is from the KEY . but i have 1 Similar spare with the remote and Another one without the Remote and all are Similar .
i am sorry for my English but hope i have make my point of view to you .

[KEVOZS8]

I think my last post was just a bad idea to speak about .
Anyway yesterday i put my scanner on and read the ATF temperature for about 2 hours while driving and here is what i found :
i reset the faults and began to drive it was reading 50C and up when it hit the 120 with the AC on it begins the problems sometimes it shifts before its time and sometimes doesn't shift . i am talking shifting from 2nd to third and fourth . and it reaches i think to its maximum 155 C . then the P0711 code its read and immediately the ATF temperature is back to normal to 97 98 100 and on highways it is drop to 92 93 C and the shifting is back to normal .
my mechanic said that its from the harness between the TCM and the trans ! i will check that on Tuesday . but can i know what is the normal maximum temperature for ATF ?

[KEVOZS8]

Please I need Help i don't know what to do ! i have checked up all the wiring from the TCM to the Valvebody harness and all seems ok ! my mechanic is assuming its the TCM module itself . i have 1 question before changing the TCM .Does the Key light(Car Electronics) on the instrument cluster that is Yellow affects on this ? because i have 3 keys for my car and with all 3 when i open the ignition the ABS ESP And The key indicator light illuminates then the ESP and ABS light goes off before the key indicator light i am wondering because before they used to go off all together (ESP ABS and Key Light). Is there anything in common ?
Please reply anyone

[KEVOZS8]

Hi again my problem isn't resolved yet my Trany problem with the transmission code P0711 Transmission Fluid Temperature Sensor Circuit Range/Performance . When the car is cold everything seems normal but after driving for half an hour specially with AC on it begins the problems when i am going on the uphill and driving slowly while i am on 2nd or third gear the car shakes . and i noticed the tha TC is locked and the trans oil is higher then 120 C and going up to 155 C . then it throws the code and goes down to normal . any advice ?

[KEVOZS8]

What does" TC open " "TC CTRL " "TC Closed " Mean in the transmission Actual values list? And if some one can inform me in which gear should i get them !