My 35d makes the same whine noise (engine speed dependent, regardless if in N or Drive). My independent diagnosed as a bad alternator bearing as well. I ordered a new Valeo 220A (since I have 4 zone climate control) from AutohausAZ.com for $475 shipped during a 4th July sale (no core required). I would be inclined to try Bosch, but for now, I stuck with the OE Valeo for now. The shop will be charging me about 2hrs for the install--it doesn't look too bad for a DIY job though.