Smart Car Tan Code Calculator 2011 (2025)

– Most aftermarket "TAN calculators" from 2015–2018 era (e.g., older versions of MB BEA Key Programmer) will fail with a 2011 vehicle. The security seed/key algorithm changed significantly. Some clone tools produce TANs that the ECU rejects, locking the immobilizer for a cooldown period – a terrifying experience for a DIYer.

If you are using a diagnostic tool like , the process typically follows these steps:

Coding a vehicle ECU always carries inherent risks. Keep these safety tips in mind before hitting "generate":

The diagnostic suite used by Mercedes-Benz technicians. smart car tan code calculator 2011

"TAN" stands for . In the Mercedes-Benz and Smart manufacturing world, these codes were designed as a security measure. Even if you have the hardware (like the Star Diagnosis System), you cannot "switch on" certain software functions without a specific code generated for your car's unique VIN (Vehicle Identification Number) .

Adding a new remote key or reprogramming existing keys after a battery drain.

(Vehicle Identification Number) into the TAN code calculator. Generate TAN: – Most aftermarket "TAN calculators" from 2015–2018 era

Select Smart -> Fortwo 451 -> Control Units -> Body -> SAM (Signal Acquisition Module) .

Generating codes for "Key Learning" to sync new fobs to the vehicle. Transmission Upgrades: Activating

The calculator works by asking for two critical inputs from your vehicle: If you are using a diagnostic tool like

Calibrating the automated manual transmission, clutch actuator, or gear motors after a replacement or mechanical service.

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 (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.

Keep your calculator software on a dedicated USB drive labeled "Smart 2011." When that dreaded "TAN ---" appears on your dash, you will be ready. And you will have saved yourself a $200 tow and a $300 dealer diagnosis.

: Activates steering wheel gear shift paddles on sportier trim levels.