I have a strange 'whining' noise upon cold startup. Started a week or so ago and hasn't gone away. Lasts about 1 1/2 - 2 minutes and then goes away. Sound is prominent in passenger compartment - can barely hear it if outside the LR. Can't distringuish its origin with hood up.

I've checked all fluid levels
It is not based on engine speed - doesn't change pitch with engine revs
Not dependent on engine idle down upon warm-up - that's acting normal
Not dependent on transmission position - park, drive, rev, neutral
Not associated with A/C or fan

When it goes away - it is as if it is winding down - takes only about 3 secs or so to go away.