There is one legitimate use: radio unlock codes (not TAN for immobilizer). For a 2011 Smart’s stock radio (e.g., Alpine unit), you can calculate the code from the serial number. Some websites do that for $5–15. That’s not a “TAN code” — it’s a radio PIN.
If you need key programming, skip the calculators entirely.
The Smart Car TAN Code Calculator 2011 is not a luxury—it is a specialized key to your car’s fuel system. Unlike earlier Smarts, the 2011 model year introduced enhanced security that locks out generic solutions. Whether you purchase an Autel scanner, download a verified software tool, or befriend a Mercedes tech with XENTRY, you need this calculator before attempting any fuel-related repair.
Final Pro Tip for 2011 Owners: Before you drain the tank, generate the code with the calculator twice — once before turning the ignition off and once after. The SAM unit sometimes rolls the seed during power cycles.
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.
Disclaimer: This article is for informational purposes. Modifying your vehicle’s fuel or electrical systems carries risk. Always consult your vehicle’s service manual and local regulations.
The Smart Car, also known as the Smart Fortwo, is a compact two-seater vehicle produced by the German company Smart, a subsidiary of Daimler AG. The 2011 model year brought various updates to the Smart Fortwo, including changes to its engine, transmission, and features. One essential tool for Smart Car owners, particularly those who want to diagnose and troubleshoot issues with their vehicle's engine or want to know the engine code, is the Smart Car Tan code calculator.
What is a Tan Code?
In the context of Smart Cars, a Tan code, also known as an engine code or DTC (Diagnostic Trouble Code), is a series of letters and numbers that identify a specific problem or issue with the vehicle's engine or transmission. These codes are generated by the vehicle's onboard computer, known as the Engine Control Unit (ECU), when it detects a fault or malfunction.
What is a Smart Car Tan Code Calculator?
A Smart Car Tan code calculator is a software tool or device that helps owners or mechanics diagnose and troubleshoot issues with their Smart Fortwo. The calculator takes the engine code or Tan code as input and provides information about the specific problem or issue affecting the vehicle. This information can include:
How Does a Smart Car Tan Code Calculator Work?
A Smart Car Tan code calculator works by accessing the vehicle's ECU and retrieving the stored engine codes or Tan codes. The calculator then uses a database of known codes and their corresponding descriptions to provide information about the specific problem or issue.
For 2011 Smart Fortwo models, the Tan code calculator can help diagnose issues with the vehicle's:
Benefits of Using a Smart Car Tan Code Calculator
Using a Smart Car Tan code calculator can provide several benefits for owners and mechanics, including:
Popular Smart Car Tan Code Calculators for 2011 Models
Several Smart Car Tan code calculators are available for 2011 models, including:
In conclusion, a Smart Car Tan code calculator is an essential tool for owners and mechanics who want to diagnose and troubleshoot issues with their 2011 Smart Fortwo. By providing accurate and reliable information about engine codes and their corresponding descriptions, these calculators can help reduce repair costs, save time, and improve overall vehicle performance.
For a 2011 Smart Fortwo (W451 model), a TAN code is a 12-digit security password required by the Mercedes-Benz DAS (Diagnostic Assistance System) to activate specific features or program new keys. What is a TAN Code Calculator?
A TAN code calculator is a software tool used to generate these 12-digit codes based on your car's VIN (Vehicle Identification Number) and the specific function you want to unlock. While older Smart models (450 and 452) often required these codes for almost everything, the 2011 (451) model only needs them for certain "special" functions. Common Functions Requiring TAN Codes
Key Learning: Programming new transponder keys to the vehicle's SAM unit. Softouch Activation: Enabling automatic gear shifting mode.
Paddle Shifters: Activating steering wheel gearshift buttons.
Cruise Control (Tempomat): Unlocking factory cruise control settings.
Performance Tuning: Activating Brabus performance software or SAM unit assignments. How to Use a TAN Code Calculator
If you are using a diagnostic tool like MB Star DAS, the process typically follows these steps: smart car tan code calculator 2011
Select the Function: In the DAS program, select the feature you wish to activate (e.g., "Key Learning").
Generate a Request Code: The program will provide a request code or ask for your VIN.
Enter into Calculator: Use a tool like the SMART TAN Code Calculator or downloadable software from forums like CarMasters to generate the 12-digit code.
Enter the TAN Code: Input the calculated 12-digit code back into the DAS field to complete the activation. Modern Alternatives for 2011 Models
Many modern aftermarket diagnostic tools can now bypass the need for a manual TAN code calculator for the 2011 W451 model:
XTool D7/D8: Often allows key programming by reading the PIN/security data directly from the car without an external calculator.
Autel MaxiIM: Tools like the IM608 can perform key learning through "Expert Selection" and "Automatic Detection" which automates the code entry process.
Offline Patches: Some versions of DAS/Xentry (e.g., after late 2016) have "TAN-free" patches that allow programming without codes, though these are typically found in enthusiast communities like CarTechnology.
Are you trying to program a new key or activate a specific feature like cruise control?
Скачать DAS Smart calculator Smart Car Tan Code Calculator
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
(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:
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.
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 Cost: $400 – $1,200
(e.g., keys, cruise control) you're working on so I can provide more specific guidance. SMART TAN Code calculator for DAS
If you have acquired a TAN code calculator (either via a mechanic friend or software download), follow this step-by-step guide:
If you have a legitimate TAN but the car rejects it, consider:
Posted by: SmartTech DIY | Category: 451 Generation (2007–2015)
If you own a 2011 Smart Fortwo (or Forfour), you’ve probably seen the dreaded “TAN required” message when trying to program a new key, disable the speed limiter, or reset the radio. You might have searched for a “2011 Smart car TAN code calculator” — and landed here.
Let me save you hours of frustration: There is no working “TAN calculator” for a 2011 Smart car that you can download for free.
Here’s why — and what actually works.
Mercedes-Benz has been phasing out TAN codes for newer vehicles (2018+), replacing them with online authentication via XENTRY Pass-Thru – essentially, the car phones home directly. But the 2011 Smart Fortwo remains in the TAN era. As long as these cars stay on the road, the TAN calculator – whether a dealer’s backend or an aftermarket tool – will whisper secrets to the SAM unit, allowing keys to be born, immobilizers to sleep, and 12-year-old city cars to start another day.
For the 2011 Smart owner, the lesson is simple: respect the TAN, keep your dealer’s number handy, and never lose your last working key. Because without a TAN, that quirky two-seater becomes a very small, very expensive sculpture.
Disclaimer: This article is for informational purposes only. Circumventing vehicle immobilizers without proper ownership documentation may be illegal. Always consult a licensed professional or dealership for vehicle security services.
Smart Car TAN code calculator is a specialized diagnostic software tool used primarily for the Smart Fortwo (2011)
and similar models to unlock and activate advanced vehicle functions. Purpose and Functionality A TAN (Transaction Authorization Number) code is a unique 12-digit security code required by the Mercedes-Benz/Smart diagnostic system, DAS (Diagnosis Assistance System) , to perform specific modifications. The calculator generates these codes using the vehicle’s
(Vehicle Identification Number) or a specific "request code" provided by the diagnostic software. Key activations that require a TAN code include: Key Learning: Programming new or replacement ignition keys. Softouch Activation:
Converting a "softip" (semi-automatic) gearbox to a "softouch" (fully automatic) mode. Cruise Control (Tempomat):
Retrofitting and activating official cruise control functions. Brabus Tuning:
Unlocking specialized performance maps or steering wheel gearshift paddles. SAM Unit Assignment:
Initializing or replacing the Signal Acquisition and Actuation Module. Implementation Process
To use a TAN code calculator for a 2011 Smart Car, a technician typically follows these steps: Hardware Connection:
Connect a diagnostic interface (like the MB Star C3 or C4) to the car's Request Generation:
Access the relevant module in the DAS software (e.g., the Gearbox or SAM module) to generate a "request code". Calculation: Input the request code or VIN into the TAN code calculator to produce the 12-digit authorization key. Activation:
Enter the calculated code back into the DAS software to finalize the activation. Professional vs. Independent Use
Historically, these codes were only available through authorized Mercedes-Benz/Smart dealerships. However, third-party TAN code calculators allow independent mechanics and enthusiasts to perform these upgrades without costly dealer visits. It is important to distinguish these from paint codes
, which are physical 3-character identifiers found on a sticker in the door jamb used for color matching. for running these diagnostic tools? AI responses may include mistakes. Learn more SMART TAN Code calculator for DAS
2011 Smart Fortwo , TAN codes (Transaction Authorization Numbers) are unique 12-digit security codes required by the Mercedes-Benz DAS/Xentry diagnostic system to unlock specific software features. What TAN Codes Unlock
You typically need these codes to activate hardware upgrades or perform critical programming that is otherwise "locked" in the car's computer (SAM unit): Key Learning: Programming new key fobs to the vehicle. Softouch Activation: There is one legitimate use: radio unlock codes
Enabling "automatic" gear shifting mode if the car originally only had manual paddle/shifter modes. Cruise Control (Tempomat):
Activating the cruise control software after installing the physical stalk. Paddle Shifters: Enabling steering wheel gearshift buttons. Brabus Tuning:
Unlocking official performance maps or Brabus-specific features. How Calculators Work Request Code:
When you attempt a locked function in DAS/Xentry, the software generates a "Request Code" or asks for your VIN. Calculation: You enter this request data into a TAN code calculator Authentication:
The calculator provides the 12-digit TAN, which you then enter back into the diagnostic software to complete the activation. Where to Find a Calculator Online Services: Sites like onauto.xyz
offer pay-per-code services where they generate the TAN for you. Modified Software: Some newer versions of Mercedes diagnostic software
have been modified ("patched") to bypass the need for TAN codes entirely, which is often easier for DIYers. Hardware Dongles:
Some diagnostic tool sellers include a standalone USB dongle or software patch that runs alongside DAS to generate codes offline. Do you need to program a new key or are you looking to enable a specific feature like cruise control?
anyboddy have the smart tan code calculator to share please?
The Ultimate Guide to the Smart Car TAN Code Calculator (2011 Models)
If you own a 2011 Smart Fortwo (W451), you’ve likely encountered a situation where your car’s computer asks for a TAN code. Whether you are trying to program a new key, activate cruise control, or enable steering wheel paddle shifters, these 12-digit alphanumeric codes are the "digital keys" to unlocking your car's hidden features.
In this guide, we’ll dive into what these codes are, how the Smart Car TAN code calculator works, and the best ways to manage your vehicle's software in 2024 and beyond. What is a Smart Car TAN Code?
"TAN" stands for Transaction Authorization Number. 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).
For the 2011 model year, TAN codes are typically required for: Key Teaching: Matching a new remote fob to the immobilizer.
Softouch Activation: Converting a standard transmission to full automatic mode. Cruise Control: Enabling the factory cruise control stalk. Steering Wheel Gearshift: Activating paddle shifters. How the TAN Code Calculator Works
A TAN code calculator is a software tool used by enthusiasts and independent mechanics. Instead of paying a dealership upwards of $150 per code, these calculators use an algorithm to derive the 12-digit authorization string based on your VIN and the Function ID you want to unlock. The Process: Identify the VIN: The calculator needs your 17-digit VIN.
Select the Feature: You choose the specific upgrade (e.g., "Cruise Control"). Generate: The software outputs a code.
Input: The code is entered into the MB Star Diagnostic (DAS/Xentry) software while connected to the car via an OBD-II multiplexer. Is it Still Necessary in 2011 Models?
The 2011 Smart Fortwo sits in a transitional period. While older W450 models relied heavily on TAN codes for almost everything, the W451 (2007–2014) started moving toward SCN Coding (Software Calibration Number).
However, for many "retrofits"—adding features the car didn't leave the factory with—a TAN code is still the primary hurdle for DIYers. Pros and Cons of Using a Calculator vs. Dealer DIY Calculator Mercedes/Smart Dealer Cost Free to $50 (Software cost) $100 - $300 per session Convenience Do it in your driveway Requires an appointment Risk Requires specialized hardware (MB Star) Professional guarantee Control Unlock any feature at any time Often refuse "unofficial" retrofits Essential Hardware for TAN Coding
You cannot simply type a TAN code into the car's dashboard. To use a generated code for your 2011 Smart, you need:
MB Star C3 or C4 Multiplexer: The hardware interface that connects your laptop to the car’s OBD port.
DAS/Xentry Software: The diagnostic suite used by Mercedes-Benz technicians.
The Calculator: Usually a standalone .exe file or an integrated "patch" within the diagnostic software. A Note on Safety and Legality
While using a TAN code calculator is a popular path for the Smart community (found on forums like SmartCarofAmerica or Evilution), always ensure you are using reputable sources. Incorrect coding can occasionally "brick" a control module, requiring a costly reset. Conclusion
For the 2011 Smart Car owner, a TAN code calculator represents freedom from dealership surcharges. It allows you to customize your Fortwo, making it safer with cruise control or more fun with paddle shifters, all without breaking the bank. Do you have the MB Star diagnostic hardware ready to go, or AI responses may include mistakes. Learn more