2003 BMW 325i Q&A

2003 BMW 325i Question: my steering wheel can not turn it makes a loosing air sound after the car is off

my mechanic said that i should replace the power steering pump 1st and then see if i need to replace the rack and pinion. how can you tell if it's the one or the other in 2003 325i bmw. the fluid is ok and it doesn't make any other noise. If i replace the pump should i replace the pressure hose too. He's saying it's not necessary to repl hose -
Answer 1
REPL THE HOSE SHOULD ONLY BE THE COST OF THE HOSE SO YES. HAVE HIM TEST P/S PUMP PRESSURE AND SEE IF IN SPEC'S -