My stering wheel its hard to turn in my Audi A4 2.8l V6 1996 what is the cause on 1996 Audi A4

Very hard when turning the stering wheel but there is ATF what can be the problem

Asked by for the 1996 Audi A4
could be rack and pinion valving or p/s pump
I just notice that when I add engine oil it went back smooth but something weird my ATF as turn pink in colour is it normal?and sometime there is a light flashing(symbol is car with a key)would like to have some clarity about it.thanks