# Service bulletin LI54.10\-P\-076820

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: 11003210
- Published by NHTSA: 2024\-07\-04
- Manufacturer's number: LI54.10\-P\-076820
- Manufacturer's date: 2024\-06\-11
- NHTSA component: ELECTRICAL SYSTEM

## NHTSA's summary

Complaint In the instrument cluster, the symbol for "12 V battery" and the message "Switch on vehicle" may sporadically be displayed. As a consequence of this, the fault codes B1FCB97 \(=\> N73/3\) and U116000 \(=\> N73/3\*1\) are stored in the fault memory. In the subsequent analysis of the 12 V on\-board electrical system data, the following parameters are noteworthy \(see picture 1 in the attachment\): • Charge balance negative when stationary. • Interior CAN bus is awake for an unusually long time while the vehicle was locked. • 12 V battery SOC \(state of charge\) during subsequent engine start is 45% or less. NOTE: This LI does not apply if the CEL was reported as being on without a 12V message. Once the 12 V battery SOC has exceeded 50% for the first time, the symbol and the message in the instrument cluster disappear again. Cause The door control unit \(N69/x\) may sporadically keep the interior CAN bus awake. Remedy Update the software and coding on all 4 door control units \(N69/1, N69/2, N69/3 and N69/4\): • To do so, a commissioning process must be started in the door control unit, left\-hand front door \(N69/1\). The remaining door control units \(N69/2, N69/3 and N69/4\) are commissioned at the same time, in an automated process.\( Path: Xentry Scope; Control Units View; TSG\-XX \(N69/1\); Adaptations; Commissioning\) • The repair software has been available since 02.02.2024 and the new SCN coding since 04.06.2024. • The measures are only 100% effective if the combination of "Repair software \+ new SCN coding" is used. SW item numbers of the repair software: • A2069020310 for the door control units on the front doors \(N69/1 and N69/2\) • A2069020410 for the door control units on the rear doors \(N69/3 and N69/4\)

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2024/MC-11003210-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2024/MC-11003210-9999.pdf)

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

## Components

Electrical system

## Trouble codes named

B1FCB, U1160

## Vehicles listed

- 2022 to 2023 MERCEDES\-BENZ AMG C43
- 2022 to 2023 MERCEDES\-BENZ C 300
- 2023 MERCEDES\-BENZ GLC 300

JSON: [/v1/bulletins/11003210](/v1/bulletins/11003210)

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