Please help I have a problem with my 2001 325xi BMW

What is your question?

I have a problem with my 2001 325xi BMW when I put my key in and twist only my radio comes on and I have to take it out and sit in the car with my key on my lap for 5 minutes then it will start I have to do that every time and when I am driving it will randomly go into limp mode please help

How long has your 2001 BMW 325xi had this problem?

Three or four weeks