Hey, amigos (and amigoettes): Very weird: The key has stopped its remote functions. I'm told it can be reprogrammed to the car via some arcane ritual which involves clicking three times, turning in a counterclockwise circle, and scattering the bones of a chicken on the asphalt, but. . . . Seriously, does anybody know where the FAQs on such a procedure might be found? I DID find out how to reprogram the one-touch windo once, but have no idea where I found that FAQ. Thanks in advance!
This is what I found on YouTube: http://www.youtube.com/watch?v=kK1HoxU4HQE Looks like a key for an E46, but try it; it might work with the M Roady.
Sounds like the battery has died. Make a trip to the dealer and they should be able to charge it and reinitialize it. Try one of the Z4 forums, I have seen it discussed there many times.