XENTRY PassThru: Mercedes-Benz Diagnostic Solution for Independent Workshops
XENTRY PassThru represents Mercedes-Benz’s diagnostic software solution specifically designed for independent repair shops and workshops, allowing them to diagnose, service, and repair Mercedes-Benz vehicles without requiring the specialized hardware used by official dealerships. Developed in accordance with European Commission regulations (including EC 2018/858), this software provides a standardized approach to vehicle diagnostics that can run on conventional workshop computers using commercially available PassThru devices. As of March 2025, XENTRY PassThru has evolved through several versions, with the latest releases offering comprehensive diagnostic capabilities that closely mirror those available to authorized Mercedes-Benz service centers while maintaining compliance with right-to-repair legislation that ensures independent workshops can access manufacturer-level diagnostic tools.
Check: Xentry PassThru [03/2024] – Latest version
XENTRY PassThru was developed as a direct response to European Commission directives (715/2007, 692/2008, 595/2009, 582/2011, 64/2012, and 2018/858) that mandate vehicle manufacturers provide independent market participants with access to diagnostic capabilities comparable to those available to authorized dealers. This legislation, often referred to as “right to repair,” ensures that vehicle owners are not limited to dealership service networks for maintenance and repairs, promoting fair competition in the automotive aftermarket sector. Unlike Mercedes-Benz’s dealer-specific diagnostic solutions, XENTRY PassThru operates on standard computers with commercially available J2534 PassThru devices, making advanced diagnostics more accessible to independent workshops that service multiple vehicle brands.
XENTRY PassThru is essentially a rebuilt version of XENTRY OpenShell, which is the diagnostic software used by authorized Mercedes-Benz dealerships and service centers. The fundamental difference lies in the hardware interface requirements rather than the core software functionality. While XENTRY OpenShell operates with Mercedes-Benz proprietary hardware like SD Connect C4, C5, and C6 multiplexers, XENTRY PassThru is designed to work with standardized J2534 PassThru devices. This adaptation enables independent workshops to diagnose Mercedes-Benz vehicles using the same universal hardware they might already employ for diagnosing vehicles from other manufacturers, reducing the need for multiple brand-specific diagnostic tools and representing a more economical approach for multi-brand service operations.
Access to XENTRY PassThru follows a distinct subscription and verification model. Mercedes-Benz requires proof that users are legitimate automotive repair businesses before granting access to the software. Applicants must upload relevant documentation such as trade licenses, commercial register entries, or professional qualifications in the automotive field. Once verified, users pay a flat annual fee of €180 for basic access, plus additional usage-based charges for diagnostic time. The usage-based pricing follows a tiered structure where diagnosis time credits can be purchased by the hour, day, week, month, or year, with different rates for passenger cars (including vans, Smart, EQ, and Maybach), vans only, or Smart vehicles only. This flexible approach allows workshops to match their diagnostic expenses to their actual Mercedes-Benz service volume, making it economically viable for shops with varying levels of Mercedes-Benz repair activity.
The hardware requirements for running XENTRY PassThru include both the computer system specifications and the diagnostic interface device specifications. This dual hardware approach must be properly configured to ensure optimal performance and full access to the software’s capabilities.
XENTRY PassThru has specific minimum computer requirements necessary for stable operation. The software requires a Windows 10 (64-bit) operating system running on a computer with at least an Intel i5 processor or equivalent. Memory requirements include a minimum of 4GB RAM, though more is recommended for optimal performance. Storage requirements are substantial, with at least 150GB of free space needed, preferably on an SSD drive for stability and performance. While some documentation suggests HDD storage is possible, the Vietnamese source explicitly recommends SSD storage for the most stable operation of the software1. The system must also have Microsoft Edge installed as the required browser and maintain a reliable broadband internet connection, preferably via LAN or WLAN, for accessing online components, updates, and authentication services.
The core hardware component for connecting XENTRY PassThru to Mercedes-Benz vehicles is a J2534-compliant PassThru device. These standardized vehicle communication interfaces act as translators between the vehicle’s communication protocols and the diagnostic software. A wide range of commercially available J2534 devices are compatible with XENTRY PassThru, including the Tactrix OpenPort 2.0, STIC SVCI, Bosch KTS560, AVDI, GM MDI2/MDI, VAS-5054, Mongoose Pro2, Toyota MVCI, Scanmatik Pro2, Cardaq Plus 2 or 3, FORD VCM II Rotunda, ACTIA interfaces, and Nexiq USB Link 22. Not all J2534 devices perform equally, however, and their capabilities directly impact which diagnostic functions are available within XENTRY PassThru. For instance, diagnosing newer Mercedes-Benz models that use DoIP (Diagnostics over Internet Protocol) requires a J2534 device with specific DoIP support, while older vehicles using traditional CAN-bus protocols have broader interface compatibility.
For newer Mercedes-Benz models utilizing DoIP communications (typically 2016 and newer models, and particularly important for the W206 and W223 series introduced in 2021), additional hardware considerations apply. The VXDIAG VCX SE has emerged as a popular J2534 device with DoIP support, but it requires activation of a specific Mercedes-Benz license to function properly with XENTRY PassThru for DoIP vehicles9. Without this license, the device may connect to traditional CAN-bus vehicles but will fail to establish communication with DoIP-equipped models. Professional reviews suggest that “The VXDIAG VCX SE is a more versatile and reliable J2534 Passthru device than the Scanmatik 2 Pro, offering better compatibility with newer [Mercedes-Benz models]”4. For workshops regularly servicing newer Mercedes-Benz vehicles, investing in a DoIP-capable interface with the proper licensing represents an important consideration when implementing XENTRY PassThru.
XENTRY PassThru provides comprehensive diagnostic capabilities comparable to those found in dealer-level tools, albeit with some limitations related to hardware constraints and specialized functions. The core diagnostic functionality covers the essential needs of most independent repair shops working on Mercedes-Benz vehicles.
The basic diagnostic capabilities of XENTRY PassThru include reading and clearing fault codes from all vehicle systems, performing quick tests to rapidly evaluate the condition of major vehicle components, and activating various drivetrain components for testing purposes. The software can access and display both actual and target values for numerous vehicle parameters, helping technicians identify discrepancies that might indicate system malfunctions. It supports diagnosis of all major vehicle systems including body electronics, engine management, chassis components, and transmission systems13. The software also provides guided troubleshooting to assist technicians in diagnosing and resolving complex issues. A particularly valuable feature is the integration of circuit diagram lookup and component location identification directly within the software, which significantly streamlines the diagnostic process compared to using separate reference materials3.
Beyond basic diagnostics, XENTRY PassThru offers advanced programming capabilities that are essential for modern vehicle repair. The software supports control unit flashing, coding, and parameterization functions that allow technicians to update software, replace modules, and configure vehicle systems according to specifications. XENTRY Flash, which is included in the software, enables programming for all Euro 5 and Euro 6 certified Mercedes-Benz models, as well as purely battery-powered electric vehicles (BEVs)58. The software also facilitates basic settings adjustments such as resetting maintenance intervals, calibrating steering angle sensors, programming fuel injectors, and performing transmission adaptations1. These advanced capabilities are crucial for completing repairs on modern Mercedes-Benz vehicles, where electronic control unit replacements and software updates are frequently required components of routine service procedures.
While XENTRY PassThru offers comprehensive diagnostic coverage, it does have several limitations compared to dealer-level tools like XENTRY OpenShell. One significant limitation is the single-channel communication architecture, which results in longer execution times for quick tests and functional diagnostics compared to the multi-channel capabilities of dealer equipment56. The software lacks integration with complementary Mercedes-Benz information systems such as XENTRY Tips (technical service bulletins), EPC (electronic parts catalog), and WIS/ASRA (repair procedures and labor time information)6. Additional limitations include the absence of automatic VIN recognition, software simulation capabilities, and certain online and offline programming functions that are available only in the full XENTRY OpenShell version3. For workshops requiring these advanced features or handling a high volume of Mercedes-Benz repairs, these limitations may impact workflow efficiency and potentially necessitate investment in complementary tools or the full dealer-level diagnostic system.
XENTRY PassThru offers extensive coverage across the Mercedes-Benz vehicle lineup, with support for most models that meet specific regulatory standards. Understanding the scope and limitations of this coverage is essential for workshops to determine if the software meets their diagnostic needs.
The software provides diagnostic coverage for a broad range of Mercedes-Benz vehicles that meet specific emissions certification standards. Specifically, XENTRY PassThru supports all passenger car models and vans that are certified to Euro 5 or Euro 6 emissions standards568. This coverage includes not only standard Mercedes-Benz passenger vehicles but also extends to Mercedes-Benz vans, Smart cars, EQ electric models, and Maybach luxury vehicles. Additionally, all purely battery-powered electric vehicles (BEVs) in the Mercedes-Benz lineup are supported for diagnostics and programming functions58. This comprehensive coverage ensures that independent workshops can diagnose and repair most modern Mercedes-Benz vehicles manufactured within the last decade, which comprise the majority of vehicles likely to be serviced outside the dealer network.
Despite its broad coverage, XENTRY PassThru does have specific limitations regarding certain Mercedes-Benz models and systems. Unlike the full XENTRY OpenShell diagnostic system, PassThru does not support diagnostics for certain commercial vehicle models including Bharat Benz, Foton, Fuso, LKW (trucks), IMO, Unimog, and passenger vehicles that require the HHT (Hand Held Tester) for diagnostics2. For newer models equipped with DoIP communication, particularly those introduced with or after the W206 C-Class and W223 S-Class platform launch in 2021, additional considerations apply regarding the diagnostic interface hardware as mentioned in the hardware section. When using a J2534 device that doesn’t support DoIP, users will be unable to flash certain modules such as the head unit and instrument cluster in current passenger car and van models6. These limitations may impact workshops that specialize in commercial vehicles or handle significant numbers of the latest Mercedes-Benz models.
For newer Mercedes-Benz models, particularly those from 2022 onward such as the W206 C-Class, additional specialized hardware and software licenses may be required for certain operations. As noted in one source, “For 2022 onwards W206, you also require Zenzefi license”9, suggesting that certain advanced programming or security-related functions for these newer models require additional authorization beyond the standard XENTRY PassThru license. The documentation also advises against using PassThru for flashing operations on DoIP-equipped vehicles, noting that “The advice is not to flash with passthru. With a DOIP device it goes much faster”9. This suggests that while basic diagnostics may be possible on all supported models, workshops handling significant programming or module replacement work on the latest Mercedes-Benz vehicles may benefit from more specialized equipment or the full dealer-level diagnostic system to ensure optimal performance and capabilities.
XENTRY PassThru has evolved through multiple versions, with each release typically introducing enhanced capabilities, expanded vehicle coverage, and improved stability. Understanding the versioning system and update process is important for maintaining an effective diagnostic solution.
As of March 2025, several versions of XENTRY PassThru are in circulation, with the latest official release being XENTRY PassThru EU 23.12.3, released in early 20251. This was preceded by versions such as XENTRY PassThru 2023.09, which was highlighted as a “Most Stable Version” in several sources1013. More recently, references to XENTRY PassThru 2024.03 suggest this may be the very latest version available, though detailed release notes for this version were not provided in the search results10. Additionally, a Mercedes XENTRY Lite version 24.12.4, released on January 7, 2025, was mentioned, which may represent a different variant of the software with a more limited feature set than the full PassThru version. The version numbering typically follows a year.month format (e.g., 23.12 for December 2023), allowing users to easily identify how recent their software version is and whether updates might be available.
The installation process for XENTRY PassThru requires careful attention to system requirements and configuration steps. Installation begins with downloading the basic setup package, which must be unzipped and installed on a compatible Windows 10 system. During installation, users must avoid using spaces or special characters in the installation path to prevent configuration issues7. After the initial installation completes, the system requires a reboot, following which the hardware selection window appears. For initial setup, users select “Simulation – without VCI” which then launches the ConfigAssist tool to guide through the remaining configuration steps7. Once the software is installed, users must complete the authentication process and ensure they have appropriate diagnostic time credits before connecting to vehicles. The installation process has been documented in various tutorial videos that provide step-by-step guidance for different versions, such as “Installation Xentry PassThru 2024.03 Most Stable Version for J2534 Openport 2.0 + SDFlash + New Cars”10.
Keeping XENTRY PassThru updated is essential for maintaining compatibility with the latest Mercedes-Benz models and accessing new diagnostic functions. References to “XUS – Xentry Update Service Online” suggest that Mercedes-Benz provides an online update service for the software, though specific details about this service were limited in the search results10. The update process may require additional authentication and verification to ensure that only authorized users receive the latest diagnostic information. Regular updates are particularly important when diagnosing newer vehicle models, as these updates often include expanded coverage for recently released vehicles and corrections for known issues in previous software versions. The subscription-based licensing model for XENTRY PassThru suggests that maintaining an active subscription is likely necessary to access these updates, reinforcing the ongoing investment required to maintain effective diagnostic capabilities for the latest Mercedes-Benz vehicles.
Mercedes-Benz has implemented robust security measures for XENTRY PassThru to protect sensitive vehicle systems from unauthorized access. These security features have been enhanced in recent years, particularly for functions that could impact vehicle operation or security.
A significant security enhancement implemented in late 2022 is the mandatory requirement for two-factor authentication when performing critical operations. As stated in search result12, “For commissioning, programming and coding of control units, a second authentication for each user is mandatory as of quarter 4/2022 (in addition to logging in with user name and password).” This additional security layer requires users to authenticate using either a smartphone authentication app or a USB security key that supports the FIDO2 standard12. The implementation of two-factor authentication reflects the growing importance of cybersecurity in automotive systems, particularly as vehicles become increasingly connected and software-dependent. This security measure helps prevent unauthorized access to critical vehicle systems that could affect safety, emissions compliance, or theft protection. Mercedes-Benz recommends setting up both authentication options simultaneously to ensure users maintain access if one authentication factor is lost or unavailable.
Access to XENTRY PassThru diagnostic functions is controlled through both authentication and a credit-based system. The software utilizes a “StartKey” system that must be activated for the software to function properly. Error messages related to the StartKey system include notifications such as “Not possible to connect to the server. The server holding the StartKey must be accessible for diagnosis to be possible” and “No access authorization for XENTRY found on the server”7. These error messages indicate that the software must maintain periodic communication with Mercedes-Benz authorization servers to validate the user’s access rights. Beyond the StartKey authentication, users must purchase diagnosis time credits specific to the vehicle types they plan to diagnose (passenger cars, vans, or Smart vehicles). These credits effectively control which diagnostic functions are available and for how long, creating a usage-based access model that aligns costs with actual diagnostic needs.
The user authentication process for XENTRY PassThru involves several steps to verify the legitimacy of the user and their access rights. Initial access requires verification that the user belongs to an authorized group of persons, specifically car workshops or other companies that deal with vehicle repairs. This verification requires uploading official documents such as trade licenses, commercial register entries, or proof of professional qualification in the automotive field58. Once this initial verification is complete, users can purchase access to the system through the XENTRY Shop. The authentication process then requires users to log in with their credentials, which now includes the additional two-factor authentication for sensitive operations. This multi-layered authentication system ensures that only verified, legitimate repair businesses can access the diagnostic capabilities provided by XENTRY PassThru, helping to maintain the integrity and security of Mercedes-Benz vehicle systems while complying with right-to-repair regulations that mandate access for independent workshops.
The practical implementation of XENTRY PassThru in workshop settings reveals important insights about its usability, performance, and suitability for different types of repair operations. Understanding these practical aspects helps workshops determine how effectively the software will integrate into their existing diagnostic workflows.
For independent workshops considering XENTRY PassThru, several practical integration factors must be evaluated. The software can run on standard workshop computers that meet the minimum specifications, eliminating the need for dedicated diagnostic hardware specific to Mercedes-Benz. However, the performance and capabilities of the J2534 device used will directly impact the diagnostic experience. As noted in user experiences, some J2534 devices work better than others with XENTRY PassThru, and some devices that claim DoIP compatibility may not actually work properly with the software9. The connection between the vehicle and diagnostic computer can be established via USB, LAN, or Wi-Fi depending on the J2534 device’s capabilities, offering flexibility in workshop setup. The software’s operation requires dedicated system resources, and parallel operation with other applications is not recommended: “You must first quit all other applications and tools if you wish to work with XENTRY. If you wish to work with other applications and tools, quit XENTRY first. Parallel operation of XENTRY with other software has not been tested”7.
XENTRY PassThru is particularly well-suited for certain workshop scenarios while presenting limitations for others. For general independent repair shops that occasionally service Mercedes-Benz vehicles, the software provides sufficient diagnostic capabilities to handle most common repairs without requiring a significant investment in brand-specific equipment. It’s especially suitable for reading and clearing fault codes, accessing vehicle data, performing basic diagnostic procedures, and conducting some programming operations. However, for workshops specializing in Mercedes-Benz vehicles or handling high volumes of complex repairs, the limitations of PassThru compared to dealer-level tools may impact efficiency. The longer run times for diagnostics due to single-channel communication, the absence of integration with other Mercedes-Benz information systems, and the restrictions related to certain programming functions may create workflow inefficiencies for high-volume Mercedes-Benz specialists. As one source noted regarding flashing operations, “The advice is not to flash with passthru. With a DOIP device it goes much faster”9, indicating that certain operations may be less efficient with PassThru than with dealer-level equipment.
Effective use of XENTRY PassThru requires appropriate training and ongoing support. Mercedes-Benz acknowledges this through references to training opportunities: “The use of XENTRY Pass Thru requires trained personnel, and you can make use of the training provided by Mercedes-Benz AG’s ‘Global Training’ academy. Training courses and Computer-Based Training (CBT) can be found on the website: http://gt.mercedes-benz.com/”[7]. This recognition of the training requirement underscores the sophisticated nature of the software and the specialized knowledge needed to effectively diagnose modern Mercedes-Benz vehicles. Support for XENTRY PassThru users appears to be centralized through the User Help Desk (UHD), which is referenced in troubleshooting scenarios7. However, the scope and availability of this support may differ from the comprehensive support provided to authorized dealers. For independent workshops implementing XENTRY PassThru, budgeting for both initial training and ongoing skill development represents an important consideration beyond the direct software and hardware costs to ensure effective utilization of the diagnostic system.
Conclusion
XENTRY PassThru represents a significant development in the automotive diagnostic landscape, providing independent workshops with access to manufacturer-level diagnostic capabilities for Mercedes-Benz vehicles while complying with regulatory requirements for repair information access. The software offers a comprehensive suite of diagnostic functions that enable independent technicians to diagnose, repair, and service most modern Mercedes-Benz vehicles without requiring the specialized hardware used by authorized dealerships. This democratization of diagnostic access aligns with global right-to-repair initiatives while maintaining appropriate security measures to protect sensitive vehicle systems.
The system’s strengths lie in its compatibility with standard workshop computers and commercially available J2534 devices, its comprehensive coverage of Euro 5 and Euro 6 certified vehicles, and its flexible subscription model that allows workshops to align diagnostic costs with their actual Mercedes-Benz service volume. These attributes make XENTRY PassThru an attractive option for independent workshops that service multiple vehicle brands, including Mercedes-Benz, without the need for significant investment in brand-specific diagnostic equipment.
However, the system does have notable limitations compared to dealer-level diagnostic tools, particularly regarding diagnostic speed, specialized programming functions, and integration with other Mercedes-Benz information systems. The hardware interface requirements for newer DoIP-equipped vehicles also present additional considerations, as not all J2534 devices provide adequate performance for these advanced communication protocols. These factors suggest that while XENTRY PassThru meets the diagnostic needs of most independent workshops, high-volume Mercedes-Benz specialists may benefit from considering the full dealer-level diagnostic system to maximize efficiency and capability.
As vehicle technology continues to evolve, with increasing electronic complexity and security requirements, diagnostic platforms like XENTRY PassThru will likely continue to develop in parallel, balancing the need for broad access to repair information with the protection of sensitive vehicle systems. For independent workshops servicing Mercedes-Benz vehicles, understanding both the capabilities and limitations of XENTRY PassThru is essential for making informed decisions about diagnostic investments and ensuring effective vehicle service delivery.