having trouble resetting radio code. Must change it to European code first but it isn't allowing me to do so. what now?

I sorry, but your answer does not solve the problem. I already did what you suggested with negative results. By the way, the USA code is a 5 digit code.

I also took the car to a BMW garage recently for the same problem and they informed me they had to recode the radio to the European code before it would take the US code. They gave me written instructions if the problem happened again, however, the radio isn't showing the same things the instructions state. For example, the instructions state to press and hold the M button until the serial number appears. That did not happen until I followed the next step and hit the + button repeatedly. That step was also supposed the show the word European, once that word appears, you insert the 4 digit European code. The word European did not appear, so I inserted the US code anyway, no results. This is where I am at a loss unless I take it back to the garage and pay the $80 bucks again.