Xentry Special Functions Calculator Fixed -
[ Vehicle ECU ] ---> Generates Seed Code ---> [ Xentry Software ] | [ Calculator ] <--- Input Seed Code <---------------/ | Computes Key | [ Xentry Software ] <--- Input Key <-----------------/ | [ Vehicle ECU ] ---> Security Unlocked ---> Advanced Functions Enabled
Unlocks "Engineering Mode," allowing technicians to view raw sensor data and internal control unit adaptations that are normally hidden.
Raise or lower the factory-set maximum speed governor on passenger cars, AMG models, and commercial vans.
: Many of these functions require a stable connection between your laptop and the vehicle via a multiplexer like the MB Star C4 or C6.
Xentry will block further progress and display a "Request Code" or seed key on the screen.
: Copy the generated code back into the Xentry/DAS interface to unlock the function. Important Considerations
Without this calculator, a technician risks:
If you work with Mercedes-Benz diagnostics, you’ve likely hit a "wall" where standard Xentry software asks for a password to perform specific coding or adaptations. This is where the Xentry Special Functions Calculator
Assist in adapting Drive Authorization System modules, including electronic ignition switches (EIS/EZS).
Raise or completely remove the factory-set vehicle speed limiter.
While highly powerful, using a Xentry Special Functions Calculator comes with strict caveats that every technician must respect.
Standard diagnostic tools allow technicians to read fault codes and perform basic maintenance. However, many advanced procedures are "locked" by the manufacturer to prevent unauthorized or accidental modifications to critical vehicle systems. These restricted areas are known as Special Functions. The calculator provides the specific security codes—often based on the vehicle’s Hardware ID—needed to bypass these locks. Key Capabilities ⚙️
: Input the required information provided by Xentry, which usually includes the VIN , SA code , or the Random Number displayed on the Xentry screen.
: Click the "Generate" button. The calculator will provide a password or response code.
Prices can vary widely. Some listings advertise a bundled "FDOK VeDoc calculator and DAS/XENTRY Special Function Calculator" for between . Some vendors offer to install and activate the software remotely after purchase.
Allows for the adjustment of factory-set vehicle speed limits on trucks and passenger cars.
Calculates the necessary pin codes to unlock Mercedes-Benz Comand navigation systems and head units when transferred between vehicles. How It Works: A Step-by-Step Workflow
: To generate passwords for protected areas.
