I have also the same problem and my autoCrew for sonar is always off!!!
And i use 1.03 full + latest LWAMI....It is same for SA and TA....i have very faint contact and i just cant mark him!...After a lot of clickings i stoped and i went to second stations ...And then suddenly :Conn. Sonar I have new contact.....
The faint contact in the meanwhile becomed more loud and he was marked...I know that i didnt have auto crew enabled so what is going on?