What is the procedure for entering the radio code in a 2000 BMW z3?

To enter the radio code in a 2000 BMW Z3, first, turn on the car's ignition and the radio will display "CODE." Use the radio preset buttons to input the code; for example, if the code is 1234, press button 1 once, button 2 twice, button 3 three times, and button 4 four times. After entering the complete code, the radio should unlock and resume normal function. If you make a mistake, you may need to wait a few minutes before attempting to re-enter the code.