One of the three most asked questions on this forums relates to the 4WD operation and what the flashing dash lights mean. I have pinned this topic and attached a link which describes the system quite well (including pics).
If you are having trouble with your system or just want to know what is the correct operation is vs incorrect have a look at this before searching or starting a new thread.
PS: The top questions are;
1/ I want to find a service manual for my vehicle?
2/ I need a radio code for my vehicle
3/ What do the flashing 4wd lights mean?
If you could help with the first two I will sicky them to the top. Our Russian link seems to have gone AWAL.