2021 Mercedes-Benz AMG GT Technical Reference Guide
This Mercedes-Benz technical bulletin LI00.01-P-078887 provides a comprehensive reference for workshops, detailing common acronyms, control unit identification methods, network/wiring architecture groups, and platform-to-baumuster mappings for the 2021 Mercedes-Benz AMG GT.
David Chen2021 Mercedes-Benz AMG GT
This technical bulletin, LI00.01-P-078887, serves as a comprehensive user's guide for Mercedes-Benz workshops. Its primary purpose is to offer helpful technical reference language, ensuring technicians have a clear understanding of various terms and systems. The document, version 4, was updated on March 25, 2026, and is applicable to various Mercedes-Benz models, including the 2021 Mercedes-Benz AMG GT.
The guide covers essential aspects such as commonly used acronyms in LI's and TIPS cases, control unit naming conventions, network/wiring architecture groups, and platform-to-baumuster quick references. This information is crucial for accurate diagnosis and repair procedures across various Mercedes-Benz models.
Acronyms and Definitions
Understanding technical acronyms is vital for effective communication and diagnosis in a workshop setting. This section provides a comprehensive list of abbreviations used within Mercedes-Benz technical documentation and diagnostic systems.
| 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 |
| IPD | Injector Performance Data |
| ISU | Initial Start Up |
| LVDS | Low Voltage Differential Signal |
| NAG"x" | New Automatic Gearbox ("x" is the generation number, example: NAG3) |
| 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 accurate diagnostics and repairs. Technicians can refer to the attached "Control Unit Nomenclature" for location of each. This nomenclature provides detailed fields such as Control Unit Name, Control Unit Number, Control Unit Short name, and the Control Unit Diogenes name (which refers to the control unit variant/family). Additional identification fields include Model, Part number, Supplier, Version, Hardware, MB object number for software (Application), Boot software, Diagnosis identifier, and Control unit variant.
Network/Wiring Architecture to Baumuster Quick Reference
This section outlines the grouping of various baumuster codes under specific network/wiring architectures, known as "Star" groups. This reference helps technicians understand the underlying electronic infrastructure of different vehicle models.
- Star 1
- 117, 156, 246 (MFA)
- 166, 176, 221, 242, 246, 292
- 906
- Star 2
- 205, 213, 238, 253, 257, 290 (MRA)
- 117, 156, 246 (MFA)
- 118, 177, 243, 247 (MFA2)
- 167, 222, 292, 463, 465
- 907
- Star 3
- 294, 295, 296, 297 (EVA2)
- 206, 214, 223, 236, 254 (MRA2)
- 192 and 232 (MSA)
- Star 3.5
- 174
- 178
Platform to Baumuster Quick Reference
This reference maps various Mercedes-Benz vehicle platforms to their corresponding baumuster codes, which are essential for identifying specific vehicle configurations and their associated technical specifications. This is particularly useful for understanding the architecture of models like the 2021 Mercedes-Benz AMG GT.
- MRA = "Mercedes-Benz Rearwheel Architecture"
- 205, 213, 222, 238, 253, 257, 290
- MRA2 = "Mercedes-Benz Rearwheel Architecture - Generation 2"
- 206, 214, 223, 236, 254
- MFA = "Mercedes-Benz Frontwheel Architecture"
- 117, 156, 246
- MFA2 = "Mercedes-Benz Frontwheel Architecture - Generation 2"
- 118, 177, 243, 247
- EVA1.5 = "Electric Vehicle Architecture"
- 243
- EVA2 = "Electric Vehicle Architecture - Generation 2"
- 294, 295, 296, 297
- MSA = "Mercedes-Benz Sport Architecture"
- 192, 232
- MMA = "Mercedes-Benz Modular Architecture"
- 174, 178
How Technicians Use This Reference
This user's guide is an invaluable tool for Mercedes-Benz technicians. It enables them to quickly look up acronyms, identify control units by their various identifiers, and understand how different vehicle platforms and network architectures relate to specific baumuster codes. This comprehensive reference facilitates accurate diagnosis, parts ordering, and software calibration lookups, ensuring efficient and correct vehicle servicing.
NHTSA ID: LI00.01-P-078887
Frequently Asked Questions
- What is the purpose of the Mercedes-Benz LI00.01-P-078887 document?
- The Mercedes-Benz LI00.01-P-078887 document is a technical reference guide for workshops. It provides definitions for common acronyms, explains control unit identification, and maps network/wiring architectures and vehicle platforms to assist technicians with diagnosis and repair, particularly for the 2021 Mercedes-Benz AMG GT.
- What kind of information does this guide provide about control units?
- This guide details how to identify control units by their name, number, short name, and Diogenes name (control unit variant/family). It also lists other crucial identifiers like part number, software version, and diagnosis identifier, which are essential for technicians to correctly locate and work with specific control units.
- Where can I find definitions for terms like DTC or SCN?
- The document includes a comprehensive list of acronyms and their definitions. For example, DTC stands for 'Diagnostic Trouble Code', and SCN stands for 'Software Calibration Number'. This helps clarify technical terminology for anyone working with Mercedes-Benz systems.
- What are the different network architecture groups mentioned?
- The guide references several network/wiring architecture groups, including Star 1, Star 2, Star 3, and Star 3.5. Each group is associated with specific baumuster codes, which helps technicians understand the vehicle's electronic infrastructure.
- What does 'MRA' or 'MFA' refer to in this Mercedes-Benz AMG GT technical acronyms guide?
- MRA refers to 'Mercedes-Benz Rearwheel Architecture', and MFA refers to 'Mercedes-Benz Frontwheel Architecture'. The document also lists their Generation 2 variants (MRA2, MFA2) and other architectures like EVA (Electric Vehicle Architecture), MSA (Sport Architecture), and MMA (Modular Architecture), along with the baumuster codes they encompass.
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