2021 Mercedes-Benz XENTRY Reference Guide
This Mercedes-Benz XENTRY reference guide provides workshops with essential technical language, including common acronyms, control unit identification methods, and platform-to-baumuster mappings.
David Chen2021 Mercedes-Benz AMG GT
This Mercedes-Benz XENTRY reference guide, identified as Topic Number LI00.01-P-078887, serves as a crucial informational document for technicians. It was issued on February 20, 2025, and is intended to provide workshops with helpful technical reference language. The guide covers common acronyms, control unit naming conventions, network/wiring architecture groups, and platform-to-baumuster quick references.
Acronyms and Definitions
This section of the Mercedes-Benz XENTRY reference guide clarifies many abbreviations commonly encountered in technical literature and diagnostic cases. Understanding these acronyms is vital for accurate diagnosis and repair.
| Acronym | Definition |
|---|---|
| AV | Actual Values |
| CU | Control Unit |
| CUL | Control Unit Log |
| DTC | Diagnostic Trouble Code |
| E-Stand | Fresh-up head unit boot software (found in head unit control unit log) |
| FUP | Fresh-up |
| FW | Firmware |
| HSVL | High Speed Video Line |
| HU | Head Unit |
| HW | Hardware |
| ISU | Initial Start Up |
| LVDS | Low Voltage Differential Signal |
| NSFT | Not Safe For Transport |
| MOPF | Model Facelift (Ex: 167 MOPF) |
| PiH | Plug-in Hybrid |
| P3 Hybrid | AMG Plug-in Hybrid with rear drive unit |
| SA Code | Sonderausstattungscode (Option Code) |
| SCN | Software Calibration Number |
| SW | Software |
| TCU | Telecommunication Control Unit (Hermes/Ramses/Etc...) |
| QT | Quicktest |
| XD | XENTRY Diagnosis |
Control Unit Identification
Proper identification of control units is fundamental for diagnostics and repairs. This Mercedes-Benz XENTRY reference guide directs technicians to an attachment titled "Control Unit Nomenclature" for detailed location information. The identification fields for control units include:
- Control Unit Name
- Control Unit Number
- Control Unit Short name
- Control Unit Diogenes ("dy-oj-uh-neez") name - Control unit variant/family
The attached image, "Control Unit Nomenclature.png," illustrates a typical control unit identification screen. For example, it shows details for an N62/4 - Driver assistance system (SG-FAS), including its part number "223 901 24 15" (Bosch, version 21/03 000), software object number "223 902 38 34" (Bosch, version 23/51 011), boot software "223 904 07 02" (Bosch, version 21/47 010), and diagnosis identifier "008026". The Control Unit Diogenes Name is listed as "IDC223 IDC223_Appl_0x0".
Network/Wiring Architecture Reference
Mercedes-Benz vehicles utilize various network architectures, often categorized into
Frequently Asked Questions
- What is the purpose of the Mercedes-Benz XENTRY reference guide LI00.01-P-078887?
- This guide provides Mercedes-Benz workshops with essential technical reference language, including common acronyms, control unit identification methods, and mappings of network architectures and platforms to baumuster codes.
- Where can I find definitions for technical acronyms like DTC or SCN?
- The Mercedes-Benz XENTRY reference guide includes a comprehensive list of acronyms and their definitions, such as DTC for Diagnostic Trouble Code and SCN for Software Calibration Number, to assist technicians.
- How does this guide help with control unit identification?
- The guide outlines the key fields used to identify control units, including their name, number, short name, and Diogenes name. It also references an attachment for visual examples of control unit nomenclature, showing details like part numbers and software versions.
- What are the different Mercedes-Benz vehicle architectures mentioned in the guide?
- The guide details various architectures like MRA (Mercedes-Benz Rearwheel Architecture), MFA (Mercedes-Benz Frontwheel Architecture), EVA (Electric Vehicle Architecture), and MSA (Mercedes-Benz Sport Architecture), along with the baumuster codes associated with each.
- Does this document indicate a defect or provide warranty coverage?
- No, this document is purely for informational purposes for trained technicians. It does not indicate the presence of a defect, nor does it guarantee warranty coverage for any vehicle mentioned.
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