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How to enter the radio unlock code in the Smart ForTwo?

Model: Smart Smart 450 - Years 1998-2007
Part: Warning light – error code

In this tutorial, you will see how to enter the radio unlock code in the Smart ForTwo, a very simple and quick operation to perform after disconnecting or replacing the battery. The code can be found in the documents provided at purchase, but if lost, it can be retrieved using one of the specific applications. Once obtained, turn on both the ignition and the radio, then repeatedly press the "1" button until you reach the first digit of the code. Continue entering the remaining digits using the "2", "3", and "4" buttons, and save the setting with the "CD" button.

Updated on 1 September 2026 by ScegliAuto

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