Ok so on my S430 there is a problem with automaticgear box.

When driving on automatic there feels like gear change problem at ~3k rpm. What happens car is just stalks or something. Kind of hard gear change.
When changing gear manually there is no problem.

 

check the fluid level, you may need to buy a dipstick or have the dealer do it since the dipstick cap is sealed

 

We recently changed gearbox oil but were unsure about level.
So maybe we will re-check agan soon.