2021 Mercedes-Benz AMG GT Technical Reference Guide

This Mercedes-Benz technical reference guide, identified as LI00.01-P-078887, is designed to assist workshops with helpful technical language and identification methods. It compiles essential information to facilitate quick reference for technicians working on vehicles like the 2021 Mercedes-Benz AMG GT. This Mercedes-Benz AMG GT technical reference is crucial for accurate diagnosis and repair.

The guide covers various technical aspects, from defining commonly used acronyms in diagnostic cases to outlining control unit identification parameters. It also provides crucial references for network/wiring architecture groups and platform-to-baumuster mappings, which are vital for accurate diagnosis and repair.

Acronyms and Definitions

This section lists common acronyms used in Mercedes-Benz technical literature, providing clear definitions for each. Understanding these terms is fundamental for technicians to interpret diagnostic information and service instructions correctly.

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

Accurate identification of control units is critical for proper diagnosis and parts ordering. This Mercedes-Benz AMG GT technical reference refers to an attachment, "Control Unit Nomenclature," for the precise location of identification details. Technicians use this information to pinpoint specific control unit variants.

The attachment "Control Unit Nomenclature.png" illustrates how to identify control units, showing fields such as 'Control Unit Name', 'Control Unit Number', 'Control Unit Short name', and 'Control Unit Diogenes Name'. It also details specific hardware and software versions, including 'Hardware', 'MB object number for software (Application)', and 'Boot software' with their respective part numbers and suppliers. Further fields like 'Diagnosis identifier' and 'Control unit variant' are also shown, crucial for precise identification.

Key identification parameters include:

• Control Unit Name
• Control Unit Number
• Control Unit Short name
• Control Unit Diogenes ("dy-oj-uh-neez") name - Control unit variant/family

Network/Wiring Architecture to Baumuster Quick Reference

Understanding the network architecture helps technicians trace communication paths and diagnose issues related to interconnected systems. This section maps different network/wiring architecture groups to their corresponding Baumuster numbers, providing a quick reference for vehicle configurations.

Star 1:

• 117, 156, 246 (MFA)
• 166, 176, 221, 242, 246, 292

Star 2:

• 205, 213, 238, 253, 257, 290 (MRA)
• 117, 156, 246 (MFA)
• 118, 177, 243, 247 (MFA2)
• 167, 222, 292, 463, 465, 906

Star 3:

• 294, 295, 296, 297 (EVA2)
• 206, 214, 223, 236, 254 (MRA2)
• 192 and 232 (MSA)
• 907

Platform to Baumuster Quick Reference

This section provides a detailed mapping of various Mercedes-Benz vehicle platforms to their associated Baumuster numbers, which are internal codes identifying specific vehicle models or variants.

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

How Technicians Use This Reference

This Mercedes-Benz AMG GT technical reference is an indispensable tool for workshop technicians. It streamlines the diagnostic process by providing quick access to critical information, aiding in the correct identification of control units, understanding vehicle architecture, and interpreting technical acronyms. This ensures efficient and accurate repairs, especially for complex systems.

Important Disclaimers for Owners

Mercedes-Benz provides important disclaimers regarding the use of this technical document:

• "DO NOT assume that a symptom or condition, or a described cause of a symptom or condition, affects any particular vehicle or groups of vehicles, or that a described repair applies to any particular vehicle or groups of vehicles."
• "The information contained in this document does not guarantee warranty coverage nor does it extend the vehicle's warranty in any way."

NHTSA ID: LI00.01-P-078887