Xentry Passthru — Openport 2.0
: A known hardware modification is to replace the R1 resistor on the OpenPort 2.0's circuit board with a 47k-ohm resistor. This resolves the power supply issue and prevents potential overheating.
Intel Core i5 or AMD Ryzen 5 (7th generation or newer).
What specific are you planning to diagnose?
The market is flooded with cheap, counterfeit Tactrix Openport 2.0 clones. Xentry Passthru Openport 2.0
Mercedes offers two flavors of their diagnostic software:
| Feature | OpenPort 2.0 | VXDIAG VCX SE | MB SD Connect C4 (Clone) | | :--- | :--- | :--- | :--- | | | $15 - $30 | ~$229 | $400 - $500 | | Key Strength | Extremely cheap, basic diagnostics | Best all-rounder, Wi-Fi, multi-brand | Gold standard, full dealer-level power | | Vehicle Coverage | 2004 - 2020/2021 | 2004 - 2025 including latest DoIP models | Classics (2001+), trucks, all models | | K-Line Support | ❌ No | ❌ Limited/No | ✅ Full support | | Xentry Version | ✅ PassThru only | ✅ PassThru & OpenShell | ✅ OpenShell (full dealer software) | | ECU Flashing | ❌ Not recommended | ✅ Yes (with DoIP for new models) | ✅ Yes (full dealer capability) | | Data Logging | Standalone to microSD card | N/A | N/A | | Connectivity | USB only | ✅ USB, Wi-Fi, DoIP (Ethernet) | ✅ Wired, sometimes bulky | | Best Suited For | Hobbyists on a tight budget | Serious DIYers & small shops | Professionals & classic car specialists |
is a specific version of Mercedes-Benz’s official diagnostic software designed to work with third-party J2534-compliant hardware. Unlike the standard "OpenShell" version, which requires a proprietary Multiplexer (like the SDConnect C4 or VCI C6), PassThru is optimized for "off-the-shelf" adapters like the OpenPort 2.0 . : A known hardware modification is to replace
To understand why this combination is so popular, it helps to understand what each component does. What is Xentry Passthru?
Xentry Passthru paired with a Tactrix Openport 2.0 is a popular, cost-effective setup for Mercedes-Benz diagnostics and coding. It allows enthusiasts and independent shops to access dealer-level software without the high cost of a dedicated SD Connect C4 or C6 multiplexer. How the Setup Works Xentry Passthru:
If you want to tailor this setup for your specific vehicle, let me know: The of your Mercedes-Benz. What specific are you planning to diagnose
| Issue | Reality Check | | :--- | :--- | | | You are on your own. Forums are your helpdesk. | | Programming risk | Slow flash speeds = higher chance of bricking. | | Clone quality | Many "Openport 2.0" units on eBay are fake clones with poor voltage regulation. | | Voltage sensitivity | A laptop battery drop or car voltage sag kills the flash. |
For advanced coding, you may need to import CBF (Calibration Files) for the Openport 2.0. Pirated software bundles often include a "CBF Patcher" or "Openport 2.0 Fix." Apply this before your first connection.
is a J2534 device originally made for Subarus/Mitsubishis but is widely used for Mercedes via PassThru. Stability:
Windows 10 or 11 (64-bit), at least 8GB RAM, and an SSD with at least 150GB of free space.
Open the Windows Start Menu and search for (installed automatically alongside Xentry).
