Xentry XDOS & Passthru Installation Guide for Dummies (2018)

Navigating the world of automotive diagnostics can be daunting, especially when you’re dealing with sophisticated software like Xentry and XDOS for Mercedes-Benz vehicles. For those new to the process, the installation itself can seem like a major hurdle. This guide is designed to simplify the installation of Xentry XDOS and Passthru for beginners in 2018, addressing common errors and providing a straightforward path to get your system up and running. We’ll focus on tackling two prevalent issues: the dreaded Xentry error 3.91 and the DAS license 0-day error, ensuring a smoother installation experience.

Fixing Common Xentry Installation Errors: Error 3.91

Encountering error 3.91 during the installation of Xentry can be frustrating. This error often arises from conflicts or issues with specific files within the Xentry installation directory. Fortunately, resolving it is usually a simple process involving locating and modifying a particular file.

The purpose of this fix is to bypass the error 3.91, which typically affects both 32-bit (x86) and 64-bit (x64) systems. The error points to a problem within the “Public_Functions” directory of your Xentry installation. Here’s how to address it:

1. Navigate to the Xentry Installation Directory:

   • For 32-bit systems, the path is usually: C:Program FilesMercedes-BenzXentryKontexteAllgemeine_AblaeufePublic_Functions
   • For 64-bit systems, the path is typically: C:Program Files (x86)Mercedes-BenzXentryKontexteAllgemeine_AblaeufePublic_Functions

2. Locate the Problem File: Within the “Public_Functions” folder, find a file named db2mv.gmf. This file is often the culprit behind error 3.91.

3. Resolve the Error: You have two options to fix this issue:

   • Delete “db2mv.gmf”: Simply delete the db2mv.gmf file from the directory.
   • Rename “db2mv.gmf”: Alternatively, you can rename the file. For example, rename it to db2mv.gmf_old. Renaming allows you to easily revert the change if needed, although deleting the file is generally sufficient.

By either deleting or renaming db2mv.gmf, you should effectively bypass the Xentry error 3.91, allowing you to proceed with the installation or operation of the software. This simple tweak often resolves a significant roadblock for users.

Resolving DAS License 0-Day Error

Another common headache during the setup of Mercedes-Benz diagnostic tools is the DAS license 0-day error. This error prevents you from using the Diagnostics Assistance System (DAS) due to a licensing issue, often indicating that the system believes your license has expired or is invalid, even when it shouldn’t be. This fix specifically targets DAS license issues, excluding Mercedes-Benz Buses (MB Bus).

This solution is designed to work alongside both original DAS installations and DAS Standalone full-size versions. Notably, using a DAS full-size installation can help avoid errors when utilizing ‘special functions’ like Vmax adjustments and End-of-Line (EOL) programming for trucks (LKW).

To fix the DAS license 0-day error, you’ll typically need to apply a patch or fix to the DAS installation directory. The process generally involves replacing or modifying certain files. While the specific files can vary depending on the fix you are using, the general location is consistent:

1. Access the DAS “bin” Directory:

   • For 32-bit systems, navigate to: C:Program FilesMercedes-BenzDASbin
   • For 64-bit systems, the path is: C:Program Files (x86)Mercedes-BenzDASbin

2. Apply the License Fix: This step usually involves copying files provided within a license fix package into the “bin” directory. These files override the standard license checks, effectively resolving the 0-day error.

Important Note: Applying this type of fix means you generally do not need to patch the ‘original’ DAS installation. It’s recommended to leave the original DAS files untouched and use the fix to circumvent the license issue. This approach preserves the integrity of your original installation while resolving the licensing problem.

Installing Passthru Device Drivers for Xentry Passthru

To use Xentry Passthru, you’ll need to ensure that the appropriate drivers for your Passthru device are installed correctly. Passthru devices act as a communication bridge between your computer and the vehicle’s diagnostic port, allowing Xentry to interface with the car’s systems.

The installation process for Passthru drivers is usually device-specific and involves the following general steps:

1. Identify Your Passthru Device: Determine the make and model of your Passthru interface. This information is crucial for downloading the correct drivers.

2. Download the Correct Drivers: Visit the website of the Passthru device manufacturer (e.g., Bosch, Drew Technologies, etc.) and locate the driver download section. Search for drivers compatible with your device model and your operating system (Windows 32-bit or 64-bit).

3. Install the Drivers: Run the downloaded driver installer. Follow the on-screen instructions to complete the installation. Typically, you’ll need to connect your Passthru device to your computer during the installation process so the installer can detect and configure it.

4. Verify Installation: After installation, check the Device Manager in Windows to ensure your Passthru device is recognized and functioning correctly without any driver errors.

Correct Passthru driver installation is essential for Xentry Passthru to communicate with your vehicle. Always refer to your Passthru device’s manual for specific installation instructions, as the process can vary between different devices.

Xentry and DAS Blacklist Considerations

While briefly mentioned, the topic of “Xentry and DAS blacklist” is important but often less directly related to the initial installation process for dummies. Blacklists typically refer to measures within the software to prevent the use of unauthorized or outdated hardware or software versions.

Understanding and managing blacklists is usually a more advanced topic. For basic installation, focusing on error fixes and driver setup is more pertinent. However, it’s worth noting that keeping your Xentry and DAS software and hardware up-to-date and using legitimate sources can help avoid potential blacklist issues.

Conclusion

Setting up Xentry XDOS and Passthru can seem challenging at first, but by addressing common errors like 3.91 and the DAS license 0-day issue, and correctly installing your Passthru device drivers, the process becomes much more manageable. This guide provides a simplified approach for beginners in 2018 to navigate these initial hurdles. Remember to always proceed with caution when modifying system files and to use reliable sources for any fixes or patches you apply. With these steps, you should be well on your way to utilizing Xentry and DAS for Mercedes-Benz diagnostics.