What to look for in buying a used 03-04 Pathfinder?

[nissanbydatsun]

My family is looking at getting a Pathfinder. Probably a 3.5 L, 4wd, 03-04 LE. Probably one with 40-50 K miles, depending on what's out there.

Are there any problem areas to know about?Any trouble with the automatic 4wd system?Any tips for checking the 4wd system during the test drive?-Does the transmission need to be in Neutral to select 4wd low range?Any areas to look for rust?Any trouble with the automatic climate control?Any pricey maintance issues like wheel bearing packing or other issues to know about.does the bose last, or does it tend to fail? An ipod/mp3 hookups?

I've read about the seat motor breaking so that the seat is stuck.Also, have read about screws falling out of the intake manifold butterflys...hope that doesn't happen!

Thanks in advance.