How to Reset the Radio Code in a BMW 850i


1. Turn the ignition switch to the 'II' position without starting the engine.
2. Press the radio power button to turn it on. Wait for 'CODE' to appear on the radio display.
3. Press the radio station preset buttons to enter the security code. The radio turns off and resets when the last digit of the code is entered.
4. Turn the radio on. The radio now functions normally.