NHTSA ID Number: 11014398
Manufacturer Communication Number: LI00.01-P-078887
TSB/Document Date: 2025-02-21
Summary
Complaint The intent of this document is to provide workshops with helpful technical reference language. • Commonly used acronyms in LI's and TIPS cases. • Control unit names, numbers, and how to identify. • Network/wiring architecture groups to baumuster quick reference. • Platform to baumuster quick reference. Cause Information only Remedy Acronyms: • 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: Refer to the attachment "Control Unit Nomenclature" for location of each. • 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: 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: 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" • No vehicles currently launched.
LI User's Guide - Acronyms, Control Unit
Identification, and Platform Reference
Topic number
LI00.01-P-078887
Version
1
Function group
00.01 - User information
Date
2/20/25
Validity
Acronyms, Control Unit Identification, and Platform Reference
Reason for change
Complaint
The intent of this document is to provide workshops with helpful technical reference language.
•
•
•
•
Commonly used acronyms in LI's and TIPS cases.
Control unit names, numbers, and how to identify.
Network/wiring architecture groups to baumuster quick reference.
Platform to baumuster quick reference.
Cause
Information only
Remedy
Acronyms:
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
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
21.02.2025 17:26
© Copyright Mercedes-Benz AG
CCUSHWA
Page 1 / 4
•
•
•
TCU = Telecommunication Control Unit (Hermes/Ramses/Etc...)
QT = Quicktest
XD = XENTRY Diagnosis
Control Unit Identification:
Refer to the attachment "Control Unit Nomenclature" for location of each.
•
•
•
•
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:
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:
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"
21.02.2025 17:26
© Copyright Mercedes-Benz AG
CCUSHWA
Page 2 / 4
•
•
•
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"
•
No vehicles currently launched.
Attachments
File
Description
Control Unit Nomenclature.png
Control Unit Nomenclature
Disclaimer
NOTE: The information contained in this document is intended for use by trained, professional technicians with the
knowledge to properly and safely perform diagnosis and repairs on Mercedes-Benz vehicles, using Mercedes-Benz
approved tools and equipment. It informs service technicians about conditions that could occur in certain vehicles and
provides information that could assist in proper vehicle diagnosis, service, or repair. It does not indicate that a defect
is present in any vehicle referenced in this document nor does it imply warranty coverage. DO NOT assume that a
21.02.2025 17:26
© Copyright Mercedes-Benz AG
CCUSHWA
Page 3 / 4
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. There can be multiple causes
resulting in the same or similar symptoms or conditions described in this document, and trained professional service
technicians must use their diagnostic skills to make evaluations on a case-by-case basis. The information contained
in this document does not guarantee warranty coverage nor does it extend the vehicle’s warranty in any way.
Symptoms
Overall vehicle > Complete vehicle > Modified to
Operation numbers/damage codes
Op. no.
Operation text
21.02.2025 17:26
© Copyright Mercedes-Benz AG
Time
CCUSHWA
Damage
code
Note
Page 4 / 4
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Replacement Service Bulletin Number:
MFR Communication Date: 2025-02-20
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Communication Type: Service Bulletin/Repair Instructions
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