Security Considerations The security of TAN code calculators depended on their secrecy, algorithm strength, and distribution controls. Weaknesses included:

Are you trying to or activate a feature like cruise control? Do you already have a diagnostic tool (like MB Star/DAS)? SMART TAN Code calculator for DAS

For the 2011 model year, TAN codes are typically required for: Matching a new remote fob to the immobilizer.

Allowing the car to switch between manual and automatic shifting modes.

You cannot simply type a TAN code into the car's dashboard. To use a generated code for your 2011 Smart, you need:

Here are the repair scenarios that require TAN activation on a 2011 Smart: