I write this post as a help for all non romanian speaking members who will have similar problems as mine with lights on internal commands.
To change any of the lights on the central console you DO NOT NEED to remove the grey alu look plastic cover.
To change the lights on left window/ heating back windshield/ central locking/ right window switch you need to pull out the switch using flat screwdriver, pulling simultaneosly from upper and bottom side... when it comes out take out the plastic cover of the switch and replace the lamp. The right window switch has soldered light bulb this can be replaced simply by soldering another lamp on the two conntact and leaving the broken lamp untouched.
To change the lamp that lights up the vent commands you simply need to put your hand from the bottom of the central console, not removing the grey cover, and turn the lamp 90 degrees. then you pull the lamp from the plastic housing and replace it. Using the same housing put the lamp back. It is difficult to work blind not knowing where the lamp is but this image can help:
This is the back side of the vent control, from the back the lamp has square shape and it is really easy to feel it.
If you decide to remove the grey plastic cover and put your hand from the upper side you will have to remove the green mechanical wire because it is in front of the lamp.
This lamp is same with the one from the cigarette lighter.
Hope that this will help someone who will have same problem as mine, because fellow romainans are not very helpfull. But maybe because it is summer and they are not in front of a computer so much ( I wish to think so!). Cheers