NHTSA ID Number: 11020643
Manufacturer Communication Number: LI54.71-P-078112
TSB/Document Date: 2025-07-10
Summary
Complaint The concern is characterized by BOTH of the following. 1. "Active Distance Assist currently unavailable" and "Active Brake Assist functions currently limited" are shown on the instrument cluster during startup or while driving AND 2. Stored DTC in quick test U0416FE - "Implausible data were received from control unit Traction system" in A108/1 (Distronic). Cause Missing wire between Drive Unit (N145) and Supercap (C8). Remedy Please reference the following attachments prior to starting work to familiarize and verify the locations of the components: • Drive Unit (N145) - See attachment "Location of Drive Unit in the vehicle". • Supercap (C8) - See attachment "Location of Supercap C8 in the vehicle". Professionally create a new connection by: • Using a red/white cable with cross-section 0.35 mm² and overall length of approximately 2m. • Connect Drive Unit (N145) plug A pin 18 to the 3-pin plug of the Supercap (C8) terminal 15 pin 2. Reference the new wire routing location as shown by the red line in "Picture 1 - Connection from Supercap to Drive Unit". • The new wire should be added to the existing wiring harness as shown by the red line "Picture 1 - Connection from Supercap to Drive Unit". • Z-Splice is the preferred method using A 000 982 91 10. • Crimp Contact Pin (MLK) for the Drive Unit (N145) is A0485450328. NOTE: All WIS instructions must be followed for wiring modifications. Damage code: 0 - 51422 - ** - 7 (for ** please state the following: "missing connection ex factory"). If the vehicle has had the modification completed and returns with an exact matching "complaint", please open a TIPS case.
Model Series 463 AMG
: Active Distance Assist and
Active Brake Assist IC Message and DTC U0416FE
Topic number
LI54.71-P-078112
Version
4
Function group
54.71 - Camera and radar-assisted assistance systems
Date
7/8/25
Validity
463 AMG
Reason for change
Adding parts for wiring.
Complaint
The concern is characterized by BOTH of the following.
1.
"Active Distance Assist currently unavailable" and "Active Brake Assist functions currently limited" are shown on
the instrument cluster during startup or while driving AND
2.
Stored DTC in quick test U0416FE - "Implausible data were received from control unit Traction system" in
A108/1 (Distronic).
Cause
Missing wire between Drive Unit (N145) and Supercap (C8).
Remedy
Please reference the following attachments prior to starting work to familiarize and verify the locations of the components:
•
Drive Unit (N145) - See attachment "Location of Drive Unit in the vehicle".
•
Supercap (C8) - See attachment "Location of Supercap C8 in the vehicle".
Professionally create a new connection by:
•
Using a red/white cable with cross-section 0.35 mm² and overall length of approximately 2m.
•
Connect Drive Unit (N145) plug A pin 18 to the 3-pin plug of the Supercap (C8) terminal 15 pin 2. Reference the
new wire routing location as shown by the red line in "Picture 1 - Connection from Supercap to Drive Unit".
•
The new wire should be added to the existing wiring harness as shown by the red line "Picture 1 - Connection
from Supercap to Drive Unit".
•
Z-Splice is the preferred method using A 000 982 91 10.
•
Crimp Contact Pin (MLK) for the Drive Unit (N145) is A0485450328.
NOTE: All WIS instructions must be followed for wiring modifications.
Damage code: 0 - 51422 - ** - 7 (for ** please state the following: "missing connection ex factory").
If the vehicle has had the modification completed and returns with an exact matching "complaint", please open a TIPS
case.
Attachments
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© Copyright Mercedes-Benz AG
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File
Description
DRIVEUNIT+weit.png
Location of Supercap C8 in the vehicle
Steuergerät+SUPERCAP+Lage+im+Fzg+weit..png
Picture 1 - Connection from Supercap to Drive Unit
wire+routing+Supercap+to+DriveUnit.png
Location of the Drive Unit in the vehicle
WIS-References
Document number
Title
Note
AR00.19-P-0100-09A
Repairing wiring harness using solder Repairing wiring harness using solder
connectors
connectors
AH00.19-P-1000-10A
Notes on soldering
Notes on soldering
AH00.19-P-1000-04A
Repair methods for wiring harnesses
Repair methods for wiring harnesses
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
09.07.2025 16:45
© Copyright Mercedes-Benz AG
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Page 2 / 3
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 > Assistance and warning systems > Distronic > Function > Warning message in instrument cluster
Communication/information > Assistance and warning systems > Distronic > Display message > Function error
Lighting > Exterior lights > Driving lights > Adaptive Highbeam Assist > Warning message in instrument cluster
Chassis/suspension > Brake system > Brakes/traction regulation system > Active Brake Assist > Function limited
Parts
Part number
ES1 ES2 Designation
Quantity Note
EPC
A0009289110
Line Connector
1
X
A0485450328
N145 Drive Unit Terminal End 1
X
Local Source
Red/White 0.35 wire
X
2 meters Alternative is to purchase an MB part
with the proper color and diameter
and fabricate the rest: A4638209600.
Control unit/fault code
Control unit
Fault text
A108 / A108/1 - Active Brake Assist / Active Distance As- U0416FE - Implausible data were received from control
sist DISTRONIC (ABA / DTR) (FCW177)
unit 'Traction system'. _
Operation numbers/damage codes
Op. no.
Operation text
Time
684018
Remove/install front floor covering on
the front passenger side
15.000 AW
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© Copyright Mercedes-Benz AG
CCUSHWA
Damage
code
Note
AR68.80-P-0008XG
Page 3 / 3
- Mixes well with conventional fluids
- Low-moisture formula provides excellent vapor lock...
- Ideal for hydraulic and disc brakes
- Provides an extra margin of safety in extreme braking...
- Mix of polyglycol ethers ensures hot brake-system operation...
- Excellent for ABS
, disc and drum brake systems - Delivers braking power when needed by avoiding a spongy...
- Both wet and dry boiling points exceed the minimum...
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TSB/Document ID: LI54.71-P-078112
Replacement Service Bulletin Number:
MFR Communication Date: 2025-07-08
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING
MFR Component System:
MFR Component Subsystem:
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