BMW Questions? Ask a BMW Repair Expert for Answers.
Hi there I will answer this for you.
Check The pins on the electric power steering pump they can become burnt out due to the high current
Also the cooling fan for the pump they can sieze causing the pump the overheat and stop working.When it is cooled down it will start working again.
Failing this you are looking at a faulty pump. We change loads of these.
Let me know how you get on.