Step transmission rough gear changes
I have 318ti compact 2001. It comes with step/tiptronic transmission. Recently it has developed some weird issue that seem to happen only on cold mornings.
Little ( ! ) comes up by the D (! inside the gear) and gear change is very quick and rough. I have bluetooth odb2 scanner with torque on my android, however it shows no errors even though ( ! ) shows. If i leave the car for few hours and drive it back home on the afternoon when its a lot warmer transmission works fine.
I havent had auto/step/tiptronic transmission before, so i dont know where to start on this one. I was thinking maybe replacing tran. oil and filter see if that helps, however the problem occurs only in the morning which makes me think that there is some sort of temp sensor somewhere or something that is not working.
Any ideas would be appreciated!