Are windows interchangeable on all x5 ranges? from a 2010 x5 to a 2003 x5?

This is not going to work. Those are completly different generations of vehicle. Try this link for lqk, they are a junk yard broker and can probably find the correct part for you.https://www.lkqonline.com/?ref=g-ppc&ref=g-ppc&gclid=Cj0KCQiAsqLSBRCmARIsAL4Pa9Q1J7ObqD8p5hNjnNhAObFx7xD6S712kak5_Icqh4hii08Jz8HPrkkaAugeEALw_wcB Alex