NHTSA ID Number: 11011544
Manufacturer Communication Number: LI54.30-P-078649
TSB/Document Date: 2024-12-06
Summary
Complaint Symptoms with driver display and/or central display Cause Under analysis Remedy NOTE: Please do not replace any parts. If you have symptoms with one or both displays, a TIPS case must be created. The TIPS case will be reviewed by MBUSA and GCSP. NOTE: Please perform the following steps before creating a TIPS case: Step 1: Check software release of the following control units to see if they are up to date; if necessary perform software update. • Instrument cluster
(IC177 / IC 177M) • Head unit (HU6 / HU7) • All displays (DISP6 / DISP7S2) Reassess problem. If the problem is still present, continue with step 2. Step 2: Perform swap (swap display with a display from a reference vehicle) and reassess problem. If the problem relates to the display, replace display. If the problem does not relate to the display, continue with step 3. Step 3: Check electrical wiring harness and video line for routing, breakovers and external damage. Check contact springs and contact sockets for corrosion and bonding (photo documentation in micro view). Check electric wiring harness for conductivity and short circuit, document measurement results in a measurement report or referenced wiring diagram using the CDT four level model. If the wiring harness and the video line is OK, please complete the attached questionnaire, create TIPS case according to list of requirements. Please add the following documents to the TIPS case: • Video of problem • Completed questionnaire • Current quick test with freeze frame results • Measurement report and photo documentation of wiring harness • Control unit log of head unit • Control unit log of instrument cluster • Control unit log of display cluster • Log-files HU-logging (password via TIPS case) • NOTE: Make sure to document the original customer complaint. NOTE: Please refer to this LI in the warranty claim in the "Notes" section. The damage code of the component determined to be the root cause of the symptom must be used in the warranty claim.
Symptoms with driver display and / or central display
Topic number
LI54.30-P-078649
Version
1
Function group
54.30 - Instrument cluster, display instruments, hazard
warning device
Date
12/3/24
Validity
Model series: 118; 167; 177; 243; 247 with HU7/NTG7
Reason for change
Complaint
Symptoms with driver display and/or central display
Cause
Under analysis
Remedy
NOTE: Please do not replace any parts.
If you have symptoms with one or both displays, a TIPS case must be created. The TIPS case will be reviewed by
MBUSA and GCSP.
NOTE: Please perform the following steps before creating a TIPS case:
Step 1: Check software release of the following control units to see if they are up to date; if necessary perform software update.
•
•
•
Instrument cluster (IC177 / IC 177M)
Head unit (HU6 / HU7)
All displays (DISP6 / DISP7S2)
Reassess problem. If the problem is still present, continue with step 2.
Step 2: Perform swap (swap display with a display from a reference vehicle) and reassess problem. If the problem relates to the display, replace display. If the problem does not relate to the display, continue with step 3.
Step 3: Check electrical wiring harness and video line for routing, breakovers and external damage. Check contact
springs and contact sockets for corrosion and bonding (photo documentation in micro view).
Check electric wiring harness for conductivity and short circuit, document measurement results in a measurement report or referenced wiring diagram using the CDT four level model.
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© Copyright Mercedes-Benz AG
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Page 1 / 2
If the wiring harness and the video line is OK, please complete the attached questionnaire, create TIPS case according to list of requirements. Please add the following documents to the TIPS
case:
•
Video of problem
•
Completed questionnaire
•
Current quick test with freeze frame results
•
Measurement report and photo documentation of wiring harness
•
Control unit log of head unit
•
Control unit log of instrument cluster
•
Control unit log of display cluster
•
Log-files HU-logging (password via TIPS case)
•
NOTE: Make sure to document the original customer complaint.
NOTE: Please refer to this LI in the warranty claim in the "Notes" section. The damage code of the component determined to be the root cause of the symptom must be used in the warranty claim.
Attachments
File
Description
questionnaire.pdf
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
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
Communication/information > Entertainment > Screen/display > Display dark -System running
Communication/information > Information display > Overall component > Instrument cluster, total failure > Malfunction
Operation numbers/damage codes
Op. no.
Operation text
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© Copyright Mercedes-Benz AG
Time
CCUSHWA
Damage
code
Note
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TSB/Document ID: LI54.30-P-078649
Replacement Service Bulletin Number:
MFR Communication Date: 2024-12-04
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ELECTRICAL SYSTEM
MFR Component System:
MFR Component Subsystem:
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