I checked it in Len user-manual but Sony didn't mention about Full-time manual feature. I also checked it on Sony website but I didn't find any resources too.
Does anyone know the Len has Full-time Manual feature?
I found this in this forum - http://www.dpreview.com/forums/post/50283922
The 18-135 lens is unique among the SAM lenses, in that it is the only one that allows full-time manual focus (like you get with the SSM lenses).
I also found this
Micromotor-type AF motor with full-time manual focusing