For Mercedes-Benz vehicle diagnostics, professionals and enthusiasts often encounter two primary software platforms: Xentry and DAS. Understanding the difference between these systems is crucial for effective vehicle maintenance and repair. This article breaks down the functionalities of DAS and Xentry, clarifying which software is appropriate for different Mercedes-Benz models.
DAS: Diagnostic Assistance System – The Legacy Tool
DAS, or Diagnostic Assistance System, is the older of the two programs and historically served as the primary diagnostic tool for Mercedes-Benz. It remains essential because a significant number of Mercedes vehicles, particularly older models, communicate through DAS.
One of DAS’s key advantages is its capability for offline programming, provided it is correctly configured. This offline functionality allows technicians to perform programming tasks without a constant internet connection. While online capabilities exist, switching to online mode in DAS requires reverting to the original flash folder setup.
Xentry: eXENTRY Diagnosis – The Modern Platform
Xentry, short for eXENTRY Diagnosis, is the newer diagnostic software designed for contemporary Mercedes-Benz models. Unlike DAS, Xentry predominantly operates online and, to our current understanding, does not support offline programming. Online operation necessitates valid login credentials.
While “synchronizations” were termed as such in older systems, Xentry, aligning with Daimler’s terminology, refers to these processes as “adaptations.”
Interestingly, while Xentry is generally intended for vehicles from model series 204 onwards, DAS can still diagnose 204 models if configured for direct DAS access, at least for certain model years. Conversely, attempting to select an older model like a 211 within Xentry will actually initiate DAS to conduct the diagnosis, mirroring the process of directly launching DAS and choosing a 211 model.
HHT-WIN: Predecessor to DAS
For Mercedes-Benz vehicles predating DAS, specifically models from the late 1980s to 1999, HHT-WIN (Hand Held Tester – Windows) is the relevant diagnostic tool. The transition between HHT-WIN and DAS isn’t sharply defined. Vehicles like the 210 series might utilize DAS for some diagnostic functions, while DAS may launch HHT for specific control units and tasks.
In essence:
- HHT-WIN: Late 1980s to 1999 Mercedes-Benz models.
- DAS: 2001 to 2009 Mercedes-Benz models.
- Xentry: 2010 and newer Mercedes-Benz models.
The year 2000 represents a transitional period. Some 1999 models sold as 2000 models might require the 38-pin connector and HHT-WIN for diagnosis. Conversely, early 2000 models sold as 2000 models might feature OBD ports, requiring an OBD cable and DAS for diagnostics. Certain models, like some SLK variants from 2000-2001, might also necessitate the 38-pin connector, adding to the complexity of this transition year.
It’s worth noting that while older software releases from 2017 and 2018 initially omitted HHT-WIN, it has been reintroduced and updated in later versions, including the 09.2018 Mercedes software disk.
SDconnect C4 Compatibility
Both Xentry and DAS are compatible with the SDconnect C4 multiplexer, enabling diagnostics across a broad spectrum of Mercedes-Benz vehicles, including passenger cars, vans, trucks, Unimogs, buses, super sports cars, and industrial engines. The compatibility extends to various brands within the Mercedes-Benz Group, such as Smart, Maybach, Setra, Cobus, and Mitsubishi Fuso models, although support for the latter group may be limited with SD connect C4 or Star C3.
Conclusion: Choosing the Right Tool
In summary, the choice between Xentry and DAS hinges primarily on the model year of the Mercedes-Benz vehicle you are diagnosing. DAS is essential for older models and offers offline programming, while Xentry is the go-to for newer vehicles, emphasizing online functionalities. Understanding the nuances of each system, including the transitional periods and tool compatibility, ensures accurate and efficient Mercedes-Benz diagnostics.
