# Service bulletin LI54.71\-P\-078112

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 11024620
- Published by NHTSA: 2025\-10\-29
- Manufacturer's number: LI54.71\-P\-078112
- Manufacturer's date: 2025\-10\-29
- NHTSA component: ELECTRICAL SYSTEM

## NHTSA's 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 for the Supercap \(C8\) connection. 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.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11024620-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11024620-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Electrical system

## Trouble codes named

U0416

## Vehicles listed

- 2003 to 2004 MERCEDES\-BENZ AMG G 55
- 2014 to 2018 MERCEDES\-BENZ AMG G63
- 2022 to 2023 MERCEDES\-BENZ AMG G63
- 2016 to 2018 MERCEDES\-BENZ AMG G65

JSON: [/v1/bulletins/11024620](/v1/bulletins/11024620)

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