I looked through the archives and I think I'm doing this correctly. Unforunately, I don't have the radio manual. This is a '99 C280. The radio has the telephone keypad on the right. With "code" showing in the display, I enter the 5 digit code then push the button under OK in the display but it is not working. The code is wrong or I'm am not entering it properly. Can someone comfirm this is the correct procedure? If it is then the code is wrong. This is a Starmark car. The dealer provided the code.
Thanks, Dan

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2012 E350 Bluetech