My husband, divorce 13 years now never skipped a payment on maintenance. Now since he got re married to me 2 years ago and now has 2 kids with me his son refuses to see or even talk to him. My husband was told that the child does not see him as his father.

After 2 years of still not seeing his son he still pay a amount of 45% of his salary towards maintenance.
His ex wife financial background has improved over the 2 years making her earn at least 45-50% more than my husband.

Me being unemployed sins my earning potential in this country is so little it works us out cheaper for me to say home looking after my kids.

What I would like to know is if the child age 14 no longer sees him as his father, would that stand in court to terminate his obligation to pay maintenance?

No, that is not going to happen. But if it has been some time before he requested a change in the support order he may do so. He is the one that has to handle it.

Visitation and support are treated separately. If the mother's financial situation has improved and the father's hasn't then he can file for a modification.

He can probably get help from the court to enforce his visitation rights and maybe get family counseling to work through the issues with the fourteen year old. He may be able to get his maintenance amount adjusted in light of his changed financial circumstances. He should see a lawyer but as Scott said, you can't do it for him,

I get annoyed though, when I hear a parent is struggling with their relationship with a minor child and the first thought is to stop supporting the child. How about being a man and enforcing the visitation and making sure nobody takes his rights as a parent away? Dumb.