I just replaced the valve body in my 09G transmission (2007 Jetta 2.5L) My scanning tool could talk to the trans computer so i filled the trans and let the excess drain out at the correct temp to ensure it had the correct amount of trans fluid.
I thought it would be interesting to see how hot the trans fluid gets in normal driving (normal Arizona driving in 100+ degrees) and over approx. 20 miles of in town stop and go driving the trans temp got up to 234F. I then went on the freeway and the temp went down to 217.
I reviewed a workshop manual for the 09G trans it it says that the trans makes adjustments to the shifts at 127C/261F and reduces engine power at 150C/302F
So the question is: - what is the normal 09G trans temp and would i expect it to be hotter in the crazy AZ heat?