Anyone know the location of the BCM label for a 2005 Q45? We are trying to program a spare fob and need the code from the label. We think it is under the dash somewhere but can't seem to find it. Thanks.

Have a look in the BL chapter of the FSM. Here's a link:
http://www.nicoclub.com/service-manual? ... 005_Q45/bl

You can get the key synced to the vehicle without a code by using the procedure outlined on Page BL-101. I did not find BCM information quickly and easily. You can look for yourself through all the chapters of the FSM. The FWD chapter is the foreward with a table of contents and the IDX chapter has an index of terms.
http://www.nicoclub.com/FSM/Q45/2005_Q45/2005_Q45/

Thanks for the links 33. The diagrams were helpful in locating the BCM.

I hate to sound like dummy but can some one confirm the bcm I am looking for is the item called nats mmu in the manual? My kid lost the only fob our q45 came with and I am trying to program 2 new fobs. But I need the numbers off of the bcm.

No, the IMMU is the key-slot (Doghouse) on an I-key car and the loop antenna that surrounds the key cylinder on a steel key car. The BCM is a separate animal. On your Q it's located under the lefthand kick panel. See BL-19 here:
https://www.nicoclub.com/service-manual ... 5%2Fbl.pdf

thanks for the quick reply! I was able to pull the kick panel, however I do not see the numbers I expected to see, arrggg ; again thank you for the pointers.