Just wanted to let people know what I just had happen pulled transmission, had it repaired. Transfer case shaft bearings were bad. Put transmission back in, did level check at 113f. Drove for a week, started getting possible slip for 2nd gear codes. Erased codes, did oil level check again, had to add another 2 litres. If you start seeing these codes, check the oil level. Also, I think maybe good idea to drive car a bit after a service and check oil level again.

 

Btw, even after reset of oil level, I was getting unsmooth shifts. Reset shift adaptations via Xentry. After a few days shifts are much much better. I had originally tried reset via gas pedal method, didn't work. After reset with Xentry, it works