Xentry Passthru Openport 2.0 [2021] May 2026
Introduction
- Full Diagnostics (SCN Coding): Read/clear fault codes, view live data, actuate components (windows, locks, lights).
- Variant Coding: Change vehicle options (e.g., enable AMG menu, change ambient lighting colors).
- Flashing (Control Unit Firmware): This is the holy grail. You can flash ECUs, TCUs, ESP, and SAM modules using Vediamo or DTS Monaco via the Passthru interface. Note: Flashing large files (over 2MB) can be slower than SDconnect, but the Openport handles it reliably.
- Offline Programming: Most Xentry Passthru setups use an offline "developer" key, meaning no active Mercedes subscription is required.
Limitations:
But does it actually work? Can a $180 J2534 device really talk to a $10,000+ software suite?
Openport 2.0
The (officially the "Tactrix Openport 2.0") was originally designed for reflashing Subaru, Mitsubishi, and Toyota ECUs. It is a high-quality, J2534-1 and J2534-2 compliant passthru device. Xentry Passthru Openport 2.0
Xentry Passthru Openport 2.0 is suitable for various applications, including: Introduction
- Connection: USB 2.0 to the PC.
- Vehicle Side: Standard OBDII connector with a legacy 38-pin connector included (essential for older Mercedes models).
- Protocol Support: It supports the necessary protocols for Mercedes diagnostics (CAN, ISO9141, ISO14230), making it a valid candidate for the "Passthru" license.
- No DoIP (Diagnostics over IP): The Openport 2.0 supports CAN-BUS and K-Line. However, it does not support DoIP. This means it will not work on the newest Mercedes platforms that rely on DoIP (such as the W205 facelift, W213 E-Class, W222 S-Class, and newer 48V mild-hybrid systems). For those cars, you need an interface that supports DoIP (like the Openport 2.0's successor, the Tactrix Openport 2.0 J2534 Pro, or a VXDIAG DoIP unit).
- Speed: The SD Connect C4/C6 uses a wired Ethernet connection, which is very fast for transferring large amounts of data (like firmware updates). The Openport 2.0 uses USB, which is fast but may be slightly slower in initializing complex systems compared to the official multiplexer.
- Firmware Flashing: While the Openport is designed for flashing, flashing Mercedes ECUs via Xentry Passthru (Simos, MED, etc.) carries a higher risk if the connection drops. Professional C4 units are considered more robust for risky firmware updates.
