2011 Smart Fortwo , a TAN code calculator is a specialized diagnostic tool used to generate 12-digit authorization codes required by the Mercedes-Benz DAS (Diagnosis Assistance System)
software. These codes "unlock" specific password-protected functions within the car's computer systems that standard diagnostics cannot access. Primary Functions of TAN Codes
Calculators are typically used to enable factory features or perform deep system resets: Key Programming:
Generating codes for "Key Learning" to sync new fobs to the vehicle. Transmission Upgrades: Activating
(automatic shifting mode) if the car was originally manual-only. Performance & Comfort: Enabling Cruise Control ( ), paddle shifters (steering wheel gearshift), or official tuning software. Hardware Changes: Assigning a new smart car tan code calculator 2011
(Signal Acquisition and Actuation Module) or adding/removing hardware components from the car's digital configuration. How the Calculation Process Works
To use a calculator, you generally follow these steps within the diagnostic environment: Request Code:
Connect the car to a DAS-equipped computer. Attempting a protected function will prompt the software to display a unique 9-digit "Request Code" or "Outcode". Input Data: Enter this Request Code along with the vehicle's
(Vehicle Identification Number) into the TAN code calculator. Generate TAN: 2011 Smart Fortwo , a TAN code calculator
The calculator uses a proprietary algorithm to output a 12-digit (the TAN code). Authorize:
Type the 12-digit code back into the DAS window to unlock the desired function. Availability and Legality
Standalone "hardware" calculators have largely been replaced by online calculation services Official Route:
Authorized Mercedes-Benz/Smart dealers generate these codes through their server-side connections. Third-Party Tools: Software like the SMART TAN Code calculator ICC (Immo Code Calculator) are common in independent shops. Problem 1: The Calculator Gives a "No Response" Error
For basic radio unlocking, you do not need a TAN calculator; you usually only need the radio's serial number, which can often be retrieved from the owner's manual or dealer for free.
If you are trying to program a specific feature, let me know which function
(e.g., keys, cruise control) you're working on so I can provide more specific guidance. SMART TAN Code calculator for DAS
This is the most challenging part for DIY owners. Here are your three best options:
I needed to program a second key. I tried a cheap OBD cable + “TAN calculator.exe” from a forum. It didn’t even connect. Then I paid a local locksmith $60. He plugged in his Autel IM608 (with active Mercedes subscription), requested the TAN online, and had the key working in 5 minutes. The TAN was 6741 — useless for anyone else, even with the same VIN.