That's what happened to me. The bluetooth died, it wouldn't show up in system profiler, so I brought it in for service. Apple couldn't fix it, so they replaced the entire machine.
Luckily for me, my original machine was a MacBook Pro Core Duo v1 (early 2006), and they replaced it with the (then) current MacBook Pro Core 2 Duo (early 2008). Nice upgrade. You Mac is practically new, but a replacement may be in the offing. Prepare for that before you bring it in for service.