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How to Open the Door of a Smart 451 When All Keys Are Lost

Model: Smart Smart 451 - Years 2007-2015
Part: Car door

In this video tutorial, you will see how to open the door of a Smart 451 without the keys in case all keys are lost, following a few simple steps that will guide you in managing your vehicle correctly. First, contact a professional who will perform the decoding and reconstruction of the key. As shown in the video: decode the ignition lock, then set all values in the electronic machine to reconstruct the mechanical part of the key. Next, perform the cutting. Once the key has been reconstructed, coding is done and the code is changed. At this point, simply get into your car, insert the key, and start the engine to check if the programming has been successful.

Updated on 16 June 2026 by ScegliAuto

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