Hi! I've recently namechanged, but not a frequent poster anyway...
ds2 (HF ASD) is 3.7. I have had a few attempts getting him interested in going to the toilet. But even if I did get him to sit on it, we never had a wee going in the toilet.
This past weekend I have started again leaving his nappy off when at home. I frequently sat him on the toilet but without any success. Instead every wee went in his pants. The thing that surprises me most is that he doesnt really seem to be aware of it at all. not aware of him doing a wee and not aware of his pants, trousers and socks being soaking wet. (or if he is aware of it, he clearly is not bothered by it). He will also happily be in a completely soiled nappy for hours without mentioning it once. 
I had hoped that him starting pre-school last December and lots of - younger and older - children around him using the toilet might get him interested. But nothing has happened.
Sooo, my question of the day is: is there any point trying to get get him toilet trained or is he just not ready? he is such a big refuser aynway, I am just not sure if it is him just resisting the change or if he really is not ready. ds1 (AS) was a nightmare to toilet train too, but easy compared to ds2.
by the looks of things I'll probably have ds3 out of nappies before ds2 as he's already showing interest in the toilet 
any suggestions welcome 